diff --git a/tests_integration/__tests__/__snapshots__/arg-parsing.js.snap b/tests_integration/__tests__/__snapshots__/arg-parsing.js.snap
index d2c2e63c..91b0c411 100644
--- a/tests_integration/__tests__/__snapshots__/arg-parsing.js.snap
+++ b/tests_integration/__tests__/__snapshots__/arg-parsing.js.snap
@@ -1,57 +1,69 @@
 // Jest Snapshot v1, https://goo.gl/fbAQLP
 
-exports[`boolean flags do not swallow the next argument 1`] = `
+exports[`boolean flags do not swallow the next argument (stderr) 1`] = `""`;
+
+exports[`boolean flags do not swallow the next argument (stdout) 1`] = `
 "console.log('could be single quote and without semi');
 "
 `;
 
-exports[`boolean flags do not swallow the next argument 2`] = `""`;
+exports[`boolean flags do not swallow the next argument (write) 1`] = `Array []`;
 
-exports[`deprecated option values are warned 1`] = `
-"console.log(\\"could be single quote and without semi\\");
-"
-`;
-
-exports[`deprecated option values are warned 2`] = `
+exports[`deprecated option values are warned (stderr) 1`] = `
 "\`--trailing-comma\` without an argument is deprecated. Prettier now treats it as: \`--trailing-comma=es5\`.
 "
 `;
 
-exports[`deprecated options are warned 1`] = `
+exports[`deprecated option values are warned (stdout) 1`] = `
 "console.log(\\"could be single quote and without semi\\");
 "
 `;
 
-exports[`deprecated options are warned 2`] = `
+exports[`deprecated option values are warned (write) 1`] = `Array []`;
+
+exports[`deprecated options are warned (stderr) 1`] = `
 "\`--flow-parser\` is deprecated. Use \`--parser flow\` instead.
 "
 `;
 
-exports[`negated options work 1`] = `
-"console.log(\\"could be single quote and without semi\\")
-"
-`;
-
-exports[`negated options work 2`] = `""`;
-
-exports[`unknown negated options are warned 1`] = `
+exports[`deprecated options are warned (stdout) 1`] = `
 "console.log(\\"could be single quote and without semi\\");
 "
 `;
 
-exports[`unknown negated options are warned 2`] = `
+exports[`deprecated options are warned (write) 1`] = `Array []`;
+
+exports[`negated options work (stderr) 1`] = `""`;
+
+exports[`negated options work (stdout) 1`] = `
+"console.log(\\"could be single quote and without semi\\")
+"
+`;
+
+exports[`negated options work (write) 1`] = `Array []`;
+
+exports[`unknown negated options are warned (stderr) 1`] = `
 "Ignored unknown option: --no-unknown
 
 "
 `;
 
-exports[`unknown options are warned 1`] = `
+exports[`unknown negated options are warned (stdout) 1`] = `
 "console.log(\\"could be single quote and without semi\\");
 "
 `;
 
-exports[`unknown options are warned 2`] = `
+exports[`unknown negated options are warned (write) 1`] = `Array []`;
+
+exports[`unknown options are warned (stderr) 1`] = `
 "Ignored unknown option: --unknown
 
 "
 `;
+
+exports[`unknown options are warned (stdout) 1`] = `
+"console.log(\\"could be single quote and without semi\\");
+"
+`;
+
+exports[`unknown options are warned (write) 1`] = `Array []`;
diff --git a/tests_integration/__tests__/__snapshots__/config-invalid.js.snap b/tests_integration/__tests__/__snapshots__/config-invalid.js.snap
index 4b0c32e9..78524a69 100644
--- a/tests_integration/__tests__/__snapshots__/config-invalid.js.snap
+++ b/tests_integration/__tests__/__snapshots__/config-invalid.js.snap
@@ -1,33 +1,57 @@
 // Jest Snapshot v1, https://goo.gl/fbAQLP
 
-exports[`show warning with unknown option 1`] = `
+exports[`show warning with unknown option (stderr) 1`] = `
 "Ignored unknown option: hello
 "
 `;
 
-exports[`throw error with invalid config format 1`] = `
+exports[`show warning with unknown option (stdout) 1`] = `""`;
+
+exports[`show warning with unknown option (write) 1`] = `Array []`;
+
+exports[`throw error with invalid config format (stderr) 1`] = `
 "Error: Invalid configuration file.
 Failed to parse \\"<cwd>/tests_integration/cli/config/invalid/file/.prettierrc\\" as JSON, JS, or YAML.
 "
 `;
 
-exports[`throw error with invalid config option (int) 1`] = `
+exports[`throw error with invalid config format (stdout) 1`] = `""`;
+
+exports[`throw error with invalid config format (write) 1`] = `Array []`;
+
+exports[`throw error with invalid config option (int) (stderr) 1`] = `
 "Invalid tabWidth value.
 Expected an integer, but received: 0.5"
 `;
 
-exports[`throw error with invalid config option (trailingComma) 1`] = `
+exports[`throw error with invalid config option (int) (stdout) 1`] = `""`;
+
+exports[`throw error with invalid config option (int) (write) 1`] = `Array []`;
+
+exports[`throw error with invalid config option (trailingComma) (stderr) 1`] = `
 "Invalid option for trailingComma.
 Expected \\"none\\", \\"es5\\" or \\"all\\", but received: \\"wow\\""
 `;
 
-exports[`throw error with invalid config precedence option (configPrecedence) 1`] = `
+exports[`throw error with invalid config option (trailingComma) (stdout) 1`] = `""`;
+
+exports[`throw error with invalid config option (trailingComma) (write) 1`] = `Array []`;
+
+exports[`throw error with invalid config precedence option (configPrecedence) (stderr) 1`] = `
 "Invalid option for --config-precedence.
 Expected \\"cli-override\\", \\"file-override\\" or \\"prefer-file\\", but received: \\"option/configPrecedence\\""
 `;
 
-exports[`throw error with invalid config target (directory) 1`] = `
+exports[`throw error with invalid config precedence option (configPrecedence) (stdout) 1`] = `""`;
+
+exports[`throw error with invalid config precedence option (configPrecedence) (write) 1`] = `Array []`;
+
+exports[`throw error with invalid config target (directory) (stderr) 1`] = `
 "Error: Invalid configuration file.
 EISDIR: illegal operation on a directory, read
 "
 `;
+
+exports[`throw error with invalid config target (directory) (stdout) 1`] = `""`;
+
+exports[`throw error with invalid config target (directory) (write) 1`] = `Array []`;
diff --git a/tests_integration/__tests__/__snapshots__/config-resolution.js.snap b/tests_integration/__tests__/__snapshots__/config-resolution.js.snap
index f607859a..e4ff66ca 100644
--- a/tests_integration/__tests__/__snapshots__/config-resolution.js.snap
+++ b/tests_integration/__tests__/__snapshots__/config-resolution.js.snap
@@ -1,6 +1,8 @@
 // Jest Snapshot v1, https://goo.gl/fbAQLP
 
-exports[`CLI overrides take precedence 1`] = `
+exports[`CLI overrides take precedence (stderr) 1`] = `""`;
+
+exports[`CLI overrides take precedence (stdout) 1`] = `
 "console.log(
   \\"jest/__best-tests__/file.js should have semi\\"
 );
@@ -53,19 +55,35 @@ function rcYaml() {
 "
 `;
 
-exports[`accepts configuration from --config 1`] = `
+exports[`CLI overrides take precedence (write) 1`] = `Array []`;
+
+exports[`accepts configuration from --config (stderr) 1`] = `""`;
+
+exports[`accepts configuration from --config (stdout) 1`] = `
 "function js() {
   console.log(\\"js/file.js should have tab width 8\\")
 }
 "
 `;
 
-exports[`resolves configuration file with --find-config-path file 1`] = `
+exports[`accepts configuration from --config (write) 1`] = `Array []`;
+
+exports[`prints nothing when no file found with --find-config-path (stderr) 1`] = `""`;
+
+exports[`prints nothing when no file found with --find-config-path (write) 1`] = `Array []`;
+
+exports[`resolves configuration file with --find-config-path file (stderr) 1`] = `""`;
+
+exports[`resolves configuration file with --find-config-path file (stdout) 1`] = `
 ".prettierrc
 "
 `;
 
-exports[`resolves configuration from external files 1`] = `
+exports[`resolves configuration file with --find-config-path file (write) 1`] = `Array []`;
+
+exports[`resolves configuration from external files (stderr) 1`] = `""`;
+
+exports[`resolves configuration from external files (stdout) 1`] = `
 "console.log(\\"jest/__best-tests__/file.js should have semi\\");
 console.log(\\"jest/Component.js should not have semi\\")
 console.log(\\"jest/Component.test.js should have semi\\");
@@ -100,7 +118,11 @@ function rcYaml() {
 "
 `;
 
-exports[`resolves configuration from external files and overrides by extname 1`] = `
+exports[`resolves configuration from external files (write) 1`] = `Array []`;
+
+exports[`resolves configuration from external files and overrides by extname (stderr) 1`] = `""`;
+
+exports[`resolves configuration from external files and overrides by extname (stdout) 1`] = `
 "function noConfigTs() {
   console.log(
     \\"no-config/file.ts should have semicolons because it has a .ts extension\\"
@@ -114,12 +136,22 @@ function packageTs() {
 "
 `;
 
-exports[`resolves json configuration file with --find-config-path file 1`] = `
+exports[`resolves configuration from external files and overrides by extname (write) 1`] = `Array []`;
+
+exports[`resolves json configuration file with --find-config-path file (stderr) 1`] = `""`;
+
+exports[`resolves json configuration file with --find-config-path file (stdout) 1`] = `
 "rc-json/.prettierrc.json
 "
 `;
 
-exports[`resolves yaml configuration file with --find-config-path file 1`] = `
+exports[`resolves json configuration file with --find-config-path file (write) 1`] = `Array []`;
+
+exports[`resolves yaml configuration file with --find-config-path file (stderr) 1`] = `""`;
+
+exports[`resolves yaml configuration file with --find-config-path file (stdout) 1`] = `
 "rc-yaml/.prettierrc.yaml
 "
 `;
+
+exports[`resolves yaml configuration file with --find-config-path file (write) 1`] = `Array []`;
diff --git a/tests_integration/__tests__/__snapshots__/cursot-offset.js.snap b/tests_integration/__tests__/__snapshots__/cursot-offset.js.snap
index 5c11f037..ec8eeb83 100644
--- a/tests_integration/__tests__/__snapshots__/cursot-offset.js.snap
+++ b/tests_integration/__tests__/__snapshots__/cursot-offset.js.snap
@@ -1,11 +1,13 @@
 // Jest Snapshot v1, https://goo.gl/fbAQLP
 
-exports[`write cursorOffset to stderr with --cursor-offset <int> 1`] = `
+exports[`write cursorOffset to stderr with --cursor-offset <int> (stderr) 1`] = `
+"1
+"
+`;
+
+exports[`write cursorOffset to stderr with --cursor-offset <int> (stdout) 1`] = `
 "1;
 "
 `;
 
-exports[`write cursorOffset to stderr with --cursor-offset <int> 2`] = `
-"1
-"
-`;
+exports[`write cursorOffset to stderr with --cursor-offset <int> (write) 1`] = `Array []`;
diff --git a/tests_integration/__tests__/__snapshots__/debug-check.js.snap b/tests_integration/__tests__/__snapshots__/debug-check.js.snap
new file mode 100644
index 00000000..e6df5935
--- /dev/null
+++ b/tests_integration/__tests__/__snapshots__/debug-check.js.snap
@@ -0,0 +1,5 @@
+// Jest Snapshot v1, https://goo.gl/fbAQLP
+
+exports[`checks stdin with --debug-check (write) 1`] = `Array []`;
+
+exports[`doesn't crash when --debug-check is passed (write) 1`] = `Array []`;
diff --git a/tests_integration/__tests__/__snapshots__/debug-print-doc.js.snap b/tests_integration/__tests__/__snapshots__/debug-print-doc.js.snap
new file mode 100644
index 00000000..d4087111
--- /dev/null
+++ b/tests_integration/__tests__/__snapshots__/debug-print-doc.js.snap
@@ -0,0 +1,3 @@
+// Jest Snapshot v1, https://goo.gl/fbAQLP
+
+exports[`prints doc with --debug-print-doc (write) 1`] = `Array []`;
diff --git a/tests_integration/__tests__/__snapshots__/early-exit.js.snap b/tests_integration/__tests__/__snapshots__/early-exit.js.snap
index 57550074..f52e6286 100644
--- a/tests_integration/__tests__/__snapshots__/early-exit.js.snap
+++ b/tests_integration/__tests__/__snapshots__/early-exit.js.snap
@@ -1,6 +1,8 @@
 // Jest Snapshot v1, https://goo.gl/fbAQLP
 
-exports[`show detailed usage with --help bracket-spacing 1`] = `
+exports[`show detailed usage with --help bracket-spacing (stderr) 1`] = `""`;
+
+exports[`show detailed usage with --help bracket-spacing (stdout) 1`] = `
 "--bracket-spacing
 
   Print spaces between brackets.
@@ -9,7 +11,11 @@ Default: true
 "
 `;
 
-exports[`show detailed usage with --help color 1`] = `
+exports[`show detailed usage with --help bracket-spacing (write) 1`] = `Array []`;
+
+exports[`show detailed usage with --help color (stderr) 1`] = `""`;
+
+exports[`show detailed usage with --help color (stdout) 1`] = `
 "--color
 
   Colorize error messages.
@@ -18,14 +24,22 @@ Default: true
 "
 `;
 
-exports[`show detailed usage with --help config 1`] = `
+exports[`show detailed usage with --help color (write) 1`] = `Array []`;
+
+exports[`show detailed usage with --help config (stderr) 1`] = `""`;
+
+exports[`show detailed usage with --help config (stdout) 1`] = `
 "--config <path>
 
   Path to a Prettier configuration file (.prettierrc, package.json, prettier.config.js).
 "
 `;
 
-exports[`show detailed usage with --help config-precedence 1`] = `
+exports[`show detailed usage with --help config (write) 1`] = `Array []`;
+
+exports[`show detailed usage with --help config-precedence (stderr) 1`] = `""`;
+
+exports[`show detailed usage with --help config-precedence (stdout) 1`] = `
 "--config-precedence <cli-override|file-override|prefer-file>
 
   Define in which order config files and CLI options should be evaluated.
@@ -41,7 +55,11 @@ Default: cli-override
 "
 `;
 
-exports[`show detailed usage with --help cursor-offset 1`] = `
+exports[`show detailed usage with --help config-precedence (write) 1`] = `Array []`;
+
+exports[`show detailed usage with --help cursor-offset (stderr) 1`] = `""`;
+
+exports[`show detailed usage with --help cursor-offset (stdout) 1`] = `
 "--cursor-offset <int>
 
   Print (to stderr) where a cursor at the given position would move to after formatting.
@@ -51,14 +69,22 @@ Default: -1
 "
 `;
 
-exports[`show detailed usage with --help find-config-path 1`] = `
+exports[`show detailed usage with --help cursor-offset (write) 1`] = `Array []`;
+
+exports[`show detailed usage with --help find-config-path (stderr) 1`] = `""`;
+
+exports[`show detailed usage with --help find-config-path (stdout) 1`] = `
 "--find-config-path <path>
 
   Find and print the path to a configuration file for the given input file.
 "
 `;
 
-exports[`show detailed usage with --help help 1`] = `
+exports[`show detailed usage with --help find-config-path (write) 1`] = `Array []`;
+
+exports[`show detailed usage with --help help (stderr) 1`] = `""`;
+
+exports[`show detailed usage with --help help (stdout) 1`] = `
 "-h, --help <flag>
 
   Show CLI usage, or details about the given flag.
@@ -66,7 +92,11 @@ exports[`show detailed usage with --help help 1`] = `
 "
 `;
 
-exports[`show detailed usage with --help ignore-path 1`] = `
+exports[`show detailed usage with --help help (write) 1`] = `Array []`;
+
+exports[`show detailed usage with --help ignore-path (stderr) 1`] = `""`;
+
+exports[`show detailed usage with --help ignore-path (stdout) 1`] = `
 "--ignore-path <path>
 
   Path to a file with patterns describing files to ignore.
@@ -75,7 +105,11 @@ Default: .prettierignore
 "
 `;
 
-exports[`show detailed usage with --help jsx-bracket-same-line 1`] = `
+exports[`show detailed usage with --help ignore-path (write) 1`] = `Array []`;
+
+exports[`show detailed usage with --help jsx-bracket-same-line (stderr) 1`] = `""`;
+
+exports[`show detailed usage with --help jsx-bracket-same-line (stdout) 1`] = `
 "--jsx-bracket-same-line
 
   Put > on the last line instead of at a new line.
@@ -84,49 +118,77 @@ Default: false
 "
 `;
 
-exports[`show detailed usage with --help l (alias) 1`] = `
+exports[`show detailed usage with --help jsx-bracket-same-line (write) 1`] = `Array []`;
+
+exports[`show detailed usage with --help l (alias) (stderr) 1`] = `""`;
+
+exports[`show detailed usage with --help l (alias) (stdout) 1`] = `
 "-l, --list-different
 
   Print the names of files that are different from Prettier's formatting.
 "
 `;
 
-exports[`show detailed usage with --help list-different 1`] = `
+exports[`show detailed usage with --help l (alias) (write) 1`] = `Array []`;
+
+exports[`show detailed usage with --help list-different (stderr) 1`] = `""`;
+
+exports[`show detailed usage with --help list-different (stdout) 1`] = `
 "-l, --list-different
 
   Print the names of files that are different from Prettier's formatting.
 "
 `;
 
-exports[`show detailed usage with --help no-bracket-spacing 1`] = `
+exports[`show detailed usage with --help list-different (write) 1`] = `Array []`;
+
+exports[`show detailed usage with --help no-bracket-spacing (stderr) 1`] = `""`;
+
+exports[`show detailed usage with --help no-bracket-spacing (stdout) 1`] = `
 "--no-bracket-spacing
 
   Do not print spaces between brackets.
 "
 `;
 
-exports[`show detailed usage with --help no-color 1`] = `
+exports[`show detailed usage with --help no-bracket-spacing (write) 1`] = `Array []`;
+
+exports[`show detailed usage with --help no-color (stderr) 1`] = `""`;
+
+exports[`show detailed usage with --help no-color (stdout) 1`] = `
 "--no-color
 
   Do not colorize error messages.
 "
 `;
 
-exports[`show detailed usage with --help no-config 1`] = `
+exports[`show detailed usage with --help no-color (write) 1`] = `Array []`;
+
+exports[`show detailed usage with --help no-config (stderr) 1`] = `""`;
+
+exports[`show detailed usage with --help no-config (stdout) 1`] = `
 "--no-config
 
   Do not look for a configuration file.
 "
 `;
 
-exports[`show detailed usage with --help no-semi 1`] = `
+exports[`show detailed usage with --help no-config (write) 1`] = `Array []`;
+
+exports[`show detailed usage with --help no-semi (stderr) 1`] = `""`;
+
+exports[`show detailed usage with --help no-semi (stdout) 1`] = `
 "--no-semi
 
   Do not print semicolons, except at the beginning of lines which may need them.
 "
 `;
 
-exports[`show detailed usage with --help parser 1`] = `
+exports[`show detailed usage with --help no-semi (write) 1`] = `Array []`;
+
+exports[`show detailed usage with --help parser (stderr) 1`] = `""`;
+
+exports[`show detailed usage with --help parser (stdout) 1`] = `
 "--parser <flow|babylon|typescript|css|less|scss|json|graphql>
 
   Which parser to use.
@@ -146,7 +208,11 @@ Default: babylon
 "
 `;
 
-exports[`show detailed usage with --help print-width 1`] = `
+exports[`show detailed usage with --help parser (write) 1`] = `Array []`;
+
+exports[`show detailed usage with --help print-width (stderr) 1`] = `""`;
+
+exports[`show detailed usage with --help print-width (stdout) 1`] = `
 "--print-width <int>
 
   The line length where Prettier will try wrap.
@@ -155,7 +221,11 @@ Default: 80
 "
 `;
 
-exports[`show detailed usage with --help range-end 1`] = `
+exports[`show detailed usage with --help print-width (write) 1`] = `Array []`;
+
+exports[`show detailed usage with --help range-end (stderr) 1`] = `""`;
+
+exports[`show detailed usage with --help range-end (stdout) 1`] = `
 "--range-end <int>
 
   Format code ending at a given character offset (exclusive).
@@ -166,7 +236,11 @@ Default: Infinity
 "
 `;
 
-exports[`show detailed usage with --help range-start 1`] = `
+exports[`show detailed usage with --help range-end (write) 1`] = `Array []`;
+
+exports[`show detailed usage with --help range-start (stderr) 1`] = `""`;
+
+exports[`show detailed usage with --help range-start (stdout) 1`] = `
 "--range-start <int>
 
   Format code starting at a given character offset.
@@ -177,7 +251,11 @@ Default: 0
 "
 `;
 
-exports[`show detailed usage with --help require-pragma 1`] = `
+exports[`show detailed usage with --help range-start (write) 1`] = `Array []`;
+
+exports[`show detailed usage with --help require-pragma (stderr) 1`] = `""`;
+
+exports[`show detailed usage with --help require-pragma (stdout) 1`] = `
 "--require-pragma
 
   Require either '@prettier' or '@format' to be present in the file's first docblock comment
@@ -187,7 +265,11 @@ Default: false
 "
 `;
 
-exports[`show detailed usage with --help semi 1`] = `
+exports[`show detailed usage with --help require-pragma (write) 1`] = `Array []`;
+
+exports[`show detailed usage with --help semi (stderr) 1`] = `""`;
+
+exports[`show detailed usage with --help semi (stdout) 1`] = `
 "--semi
 
   Print semicolons.
@@ -196,7 +278,11 @@ Default: true
 "
 `;
 
-exports[`show detailed usage with --help single-quote 1`] = `
+exports[`show detailed usage with --help semi (write) 1`] = `Array []`;
+
+exports[`show detailed usage with --help single-quote (stderr) 1`] = `""`;
+
+exports[`show detailed usage with --help single-quote (stdout) 1`] = `
 "--single-quote
 
   Use single quotes instead of double quotes.
@@ -205,21 +291,33 @@ Default: false
 "
 `;
 
-exports[`show detailed usage with --help stdin 1`] = `
+exports[`show detailed usage with --help single-quote (write) 1`] = `Array []`;
+
+exports[`show detailed usage with --help stdin (stderr) 1`] = `""`;
+
+exports[`show detailed usage with --help stdin (stdout) 1`] = `
 "--stdin
 
   Force reading input from stdin.
 "
 `;
 
-exports[`show detailed usage with --help stdin-filepath 1`] = `
+exports[`show detailed usage with --help stdin (write) 1`] = `Array []`;
+
+exports[`show detailed usage with --help stdin-filepath (stderr) 1`] = `""`;
+
+exports[`show detailed usage with --help stdin-filepath (stdout) 1`] = `
 "--stdin-filepath <path>
 
   Path to the file to pretend that stdin comes from.
 "
 `;
 
-exports[`show detailed usage with --help tab-width 1`] = `
+exports[`show detailed usage with --help stdin-filepath (write) 1`] = `Array []`;
+
+exports[`show detailed usage with --help tab-width (stderr) 1`] = `""`;
+
+exports[`show detailed usage with --help tab-width (stdout) 1`] = `
 "--tab-width <int>
 
   Number of spaces per indentation level.
@@ -228,7 +326,11 @@ Default: 2
 "
 `;
 
-exports[`show detailed usage with --help trailing-comma 1`] = `
+exports[`show detailed usage with --help tab-width (write) 1`] = `Array []`;
+
+exports[`show detailed usage with --help trailing-comma (stderr) 1`] = `""`;
+
+exports[`show detailed usage with --help trailing-comma (stdout) 1`] = `
 "--trailing-comma <none|es5|all>
 
   Print trailing commas wherever possible when multi-line.
@@ -243,7 +345,11 @@ Default: none
 "
 `;
 
-exports[`show detailed usage with --help use-tabs 1`] = `
+exports[`show detailed usage with --help trailing-comma (write) 1`] = `Array []`;
+
+exports[`show detailed usage with --help use-tabs (stderr) 1`] = `""`;
+
+exports[`show detailed usage with --help use-tabs (stdout) 1`] = `
 "--use-tabs
 
   Indent with tabs instead of spaces.
@@ -252,28 +358,44 @@ Default: false
 "
 `;
 
-exports[`show detailed usage with --help version 1`] = `
+exports[`show detailed usage with --help use-tabs (write) 1`] = `Array []`;
+
+exports[`show detailed usage with --help version (stderr) 1`] = `""`;
+
+exports[`show detailed usage with --help version (stdout) 1`] = `
 "-v, --version
 
   Print Prettier version.
 "
 `;
 
-exports[`show detailed usage with --help with-node-modules 1`] = `
+exports[`show detailed usage with --help version (write) 1`] = `Array []`;
+
+exports[`show detailed usage with --help with-node-modules (stderr) 1`] = `""`;
+
+exports[`show detailed usage with --help with-node-modules (stdout) 1`] = `
 "--with-node-modules
 
   Process files inside 'node_modules' directory.
 "
 `;
 
-exports[`show detailed usage with --help write 1`] = `
+exports[`show detailed usage with --help with-node-modules (write) 1`] = `Array []`;
+
+exports[`show detailed usage with --help write (stderr) 1`] = `""`;
+
+exports[`show detailed usage with --help write (stdout) 1`] = `
 "--write
 
   Edit files in-place. (Beware!)
 "
 `;
 
-exports[`show usage with --help 1`] = `
+exports[`show detailed usage with --help write (write) 1`] = `Array []`;
+
+exports[`show usage with --help (stderr) 1`] = `""`;
+
+exports[`show usage with --help (stdout) 1`] = `
 "Usage: prettier [options] [file/glob ...]
 
 By default, output is written to stdout.
@@ -348,7 +470,33 @@ Other options:
 "
 `;
 
-exports[`show warning with --help not-found (typo) 1`] = `
+exports[`show usage with --help (write) 1`] = `Array []`;
+
+exports[`show version with --version (stderr) 1`] = `""`;
+
+exports[`show version with --version (write) 1`] = `Array []`;
+
+exports[`show warning with --help not-found (stderr) 1`] = `
+"Unknown option name \\"not-found\\"
+
+"
+`;
+
+exports[`show warning with --help not-found (stdout) 1`] = `
+"-h, --help <flag>
+
+  Show CLI usage, or details about the given flag.
+  Example: --help write
+"
+`;
+
+exports[`show warning with --help not-found (typo) (stderr) 1`] = `
+"Unknown option name \\"parserr\\", did you mean \\"parser\\"?
+
+"
+`;
+
+exports[`show warning with --help not-found (typo) (stdout) 1`] = `
 "--parser <flow|babylon|typescript|css|less|scss|json|graphql>
 
   Which parser to use.
@@ -368,27 +516,13 @@ Default: babylon
 "
 `;
 
-exports[`show warning with --help not-found (typo) 2`] = `
-"Unknown option name \\"parserr\\", did you mean \\"parser\\"?
+exports[`show warning with --help not-found (typo) (write) 1`] = `Array []`;
 
-"
-`;
+exports[`show warning with --help not-found (write) 1`] = `Array []`;
 
-exports[`show warning with --help not-found 1`] = `
-"-h, --help <flag>
+exports[`throw error and show usage with something unexpected (stderr) 1`] = `""`;
 
-  Show CLI usage, or details about the given flag.
-  Example: --help write
-"
-`;
-
-exports[`show warning with --help not-found 2`] = `
-"Unknown option name \\"not-found\\"
-
-"
-`;
-
-exports[`throw error and show usage with something unexpected 1`] = `
+exports[`throw error and show usage with something unexpected (stdout) 1`] = `
 "Usage: prettier [options] [file/glob ...]
 
 By default, output is written to stdout.
@@ -463,14 +597,22 @@ Other options:
 "
 `;
 
-exports[`throw error and show usage with something unexpected 2`] = `""`;
+exports[`throw error and show usage with something unexpected (write) 1`] = `Array []`;
 
-exports[`throw error with --find-config-path + multiple files 1`] = `
+exports[`throw error with --find-config-path + multiple files (stderr) 1`] = `
 "Cannot use --find-config-path with multiple files
 "
 `;
 
-exports[`throw error with --write + --debug-check 1`] = `
+exports[`throw error with --find-config-path + multiple files (stdout) 1`] = `""`;
+
+exports[`throw error with --find-config-path + multiple files (write) 1`] = `Array []`;
+
+exports[`throw error with --write + --debug-check (stderr) 1`] = `
 "Cannot use --write and --debug-check together.
 "
 `;
+
+exports[`throw error with --write + --debug-check (stdout) 1`] = `""`;
+
+exports[`throw error with --write + --debug-check (write) 1`] = `Array []`;
diff --git a/tests_integration/__tests__/__snapshots__/ignore-absolute-path.js.snap b/tests_integration/__tests__/__snapshots__/ignore-absolute-path.js.snap
index a396d0f8..32694e8e 100644
--- a/tests_integration/__tests__/__snapshots__/ignore-absolute-path.js.snap
+++ b/tests_integration/__tests__/__snapshots__/ignore-absolute-path.js.snap
@@ -1,6 +1,10 @@
 // Jest Snapshot v1, https://goo.gl/fbAQLP
 
-exports[`support absolute filename 1`] = `
+exports[`support absolute filename (stderr) 1`] = `""`;
+
+exports[`support absolute filename (stdout) 1`] = `
 "regular-module.js
 "
 `;
+
+exports[`support absolute filename (write) 1`] = `Array []`;
diff --git a/tests_integration/__tests__/__snapshots__/ignore-path.js.snap b/tests_integration/__tests__/__snapshots__/ignore-path.js.snap
index d88c338b..32cd5821 100644
--- a/tests_integration/__tests__/__snapshots__/ignore-path.js.snap
+++ b/tests_integration/__tests__/__snapshots__/ignore-path.js.snap
@@ -1,11 +1,19 @@
 // Jest Snapshot v1, https://goo.gl/fbAQLP
 
-exports[`ignore path 1`] = `
+exports[`ignore path (stderr) 1`] = `""`;
+
+exports[`ignore path (stdout) 1`] = `
 "regular-module.js
 "
 `;
 
-exports[`support .prettierignore 1`] = `
+exports[`ignore path (write) 1`] = `Array []`;
+
+exports[`support .prettierignore (stderr) 1`] = `""`;
+
+exports[`support .prettierignore (stdout) 1`] = `
 "other-regular-modules.js
 "
 `;
+
+exports[`support .prettierignore (write) 1`] = `Array []`;
diff --git a/tests_integration/__tests__/__snapshots__/invalid-ignore.js.snap b/tests_integration/__tests__/__snapshots__/invalid-ignore.js.snap
index ba39faeb..1a004e09 100644
--- a/tests_integration/__tests__/__snapshots__/invalid-ignore.js.snap
+++ b/tests_integration/__tests__/__snapshots__/invalid-ignore.js.snap
@@ -1,6 +1,10 @@
 // Jest Snapshot v1, https://goo.gl/fbAQLP
 
-exports[`throw error with invalid ignore 1`] = `
+exports[`throw error with invalid ignore (stderr) 1`] = `
 "Unable to read <cwd>/tests_integration/cli/invalid-ignore/.prettierignore:
 "
 `;
+
+exports[`throw error with invalid ignore (stdout) 1`] = `""`;
+
+exports[`throw error with invalid ignore (write) 1`] = `Array []`;
diff --git a/tests_integration/__tests__/__snapshots__/list-different.js.snap b/tests_integration/__tests__/__snapshots__/list-different.js.snap
new file mode 100644
index 00000000..8e00c14e
--- /dev/null
+++ b/tests_integration/__tests__/__snapshots__/list-different.js.snap
@@ -0,0 +1,3 @@
+// Jest Snapshot v1, https://goo.gl/fbAQLP
+
+exports[`checks stdin with --list-different (write) 1`] = `Array []`;
diff --git a/tests_integration/__tests__/__snapshots__/multiple-patterns.js.snap b/tests_integration/__tests__/__snapshots__/multiple-patterns.js.snap
index 23d6bf4b..c1f0bfe0 100644
--- a/tests_integration/__tests__/__snapshots__/multiple-patterns.js.snap
+++ b/tests_integration/__tests__/__snapshots__/multiple-patterns.js.snap
@@ -1,6 +1,8 @@
 // Jest Snapshot v1, https://goo.gl/fbAQLP
 
-exports[`multiple patterns 1`] = `
+exports[`multiple patterns (stderr) 1`] = `""`;
+
+exports[`multiple patterns (stdout) 1`] = `
 "directory/file.js
 directory/nested-directory/nested-directory-file.js
 other-directory/file.js
@@ -8,7 +10,11 @@ other-directory/nested-directory/nested-directory-file.js
 "
 `;
 
-exports[`multiple patterns by with ignore pattern, doesn't ignore node_modules with --with-node-modules flag 1`] = `
+exports[`multiple patterns (write) 1`] = `Array []`;
+
+exports[`multiple patterns by with ignore pattern, doesn't ignore node_modules with --with-node-modules flag (stderr) 1`] = `""`;
+
+exports[`multiple patterns by with ignore pattern, doesn't ignore node_modules with --with-node-modules flag (stdout) 1`] = `
 "node_modules/node-module.js
 other-directory/file.js
 other-directory/nested-directory/nested-directory-file.js
@@ -17,7 +23,11 @@ regular-module.js
 "
 `;
 
-exports[`multiple patterns by with ignore pattern, ignores node_modules by default 1`] = `
+exports[`multiple patterns by with ignore pattern, doesn't ignore node_modules with --with-node-modules flag (write) 1`] = `Array []`;
+
+exports[`multiple patterns by with ignore pattern, ignores node_modules by default (stderr) 1`] = `""`;
+
+exports[`multiple patterns by with ignore pattern, ignores node_modules by default (stdout) 1`] = `
 "other-directory/file.js
 other-directory/nested-directory/nested-directory-file.js
 other-regular-modules.js
@@ -25,7 +35,11 @@ regular-module.js
 "
 `;
 
-exports[`multiple patterns by with ignore pattern, ignores node_modules by with ./**/*.js 1`] = `
+exports[`multiple patterns by with ignore pattern, ignores node_modules by default (write) 1`] = `Array []`;
+
+exports[`multiple patterns by with ignore pattern, ignores node_modules by with ./**/*.js (stderr) 1`] = `""`;
+
+exports[`multiple patterns by with ignore pattern, ignores node_modules by with ./**/*.js (stdout) 1`] = `
 "./other-directory/file.js
 ./other-directory/nested-directory/nested-directory-file.js
 ./other-regular-modules.js
@@ -33,7 +47,11 @@ exports[`multiple patterns by with ignore pattern, ignores node_modules by with
 "
 `;
 
-exports[`multiple patterns with ignore nested directories pattern 1`] = `
+exports[`multiple patterns by with ignore pattern, ignores node_modules by with ./**/*.js (write) 1`] = `Array []`;
+
+exports[`multiple patterns with ignore nested directories pattern (stderr) 1`] = `""`;
+
+exports[`multiple patterns with ignore nested directories pattern (stdout) 1`] = `
 "directory/file.js
 other-directory/file.js
 other-regular-modules.js
@@ -41,13 +59,29 @@ regular-module.js
 "
 `;
 
-exports[`multiple patterns with non exists pattern 1`] = `
+exports[`multiple patterns with ignore nested directories pattern (write) 1`] = `Array []`;
+
+exports[`multiple patterns with non exists pattern (stderr) 1`] = `""`;
+
+exports[`multiple patterns with non exists pattern (stdout) 1`] = `
 "directory/file.js
 directory/nested-directory/nested-directory-file.js
 "
 `;
 
-exports[`multiple patterns, throw error and exit with non zero code on non existing files 1`] = `
+exports[`multiple patterns with non exists pattern (write) 1`] = `Array []`;
+
+exports[`multiple patterns, throw error and exit with non zero code on non existing files (stderr) 1`] = `
 "No matching files. Patterns tried: non-existent.js other-non-existent.js !**/node_modules/** !./node_modules/**
 "
 `;
+
+exports[`multiple patterns, throw error and exit with non zero code on non existing files (stdout) 1`] = `""`;
+
+exports[`multiple patterns, throw error and exit with non zero code on non existing files (write) 1`] = `Array []`;
+
+exports[`no errors on empty patterns (stderr) 1`] = `""`;
+
+exports[`no errors on empty patterns (stdout) 1`] = `""`;
+
+exports[`no errors on empty patterns (write) 1`] = `Array []`;
diff --git a/tests_integration/__tests__/__snapshots__/parser-api.js.snap b/tests_integration/__tests__/__snapshots__/parser-api.js.snap
index e01429b3..047ca6ac 100644
--- a/tests_integration/__tests__/__snapshots__/parser-api.js.snap
+++ b/tests_integration/__tests__/__snapshots__/parser-api.js.snap
@@ -1,7 +1,11 @@
 // Jest Snapshot v1, https://goo.gl/fbAQLP
 
-exports[`allows passing a string to resolve a parser 1`] = `
+exports[`allows passing a string to resolve a parser (stderr) 1`] = `""`;
+
+exports[`allows passing a string to resolve a parser (stdout) 1`] = `
 "/* eslint-disable */
 bar();
 "
 `;
+
+exports[`allows passing a string to resolve a parser (write) 1`] = `Array []`;
diff --git a/tests_integration/__tests__/__snapshots__/stdin-filepath.js.snap b/tests_integration/__tests__/__snapshots__/stdin-filepath.js.snap
index 822c4ab1..6041b6c6 100644
--- a/tests_integration/__tests__/__snapshots__/stdin-filepath.js.snap
+++ b/tests_integration/__tests__/__snapshots__/stdin-filepath.js.snap
@@ -1,19 +1,23 @@
 // Jest Snapshot v1, https://goo.gl/fbAQLP
 
-exports[`format correctly if stdin content compatible with stdin-filepath 1`] = `
+exports[`format correctly if stdin content compatible with stdin-filepath (stderr) 1`] = `""`;
+
+exports[`format correctly if stdin content compatible with stdin-filepath (stdout) 1`] = `
 ".name {
   display: none;
 }
 "
 `;
 
-exports[`format correctly if stdin content compatible with stdin-filepath 2`] = `""`;
+exports[`format correctly if stdin content compatible with stdin-filepath (write) 1`] = `Array []`;
 
-exports[`throw error if stdin content incompatible with stdin-filepath 1`] = `""`;
-
-exports[`throw error if stdin content incompatible with stdin-filepath 2`] = `
+exports[`throw error if stdin content incompatible with stdin-filepath (stderr) 1`] = `
 "stdin: SyntaxError: Unexpected token (1:1)
 > 1 | .name { display: none; }
     | ^
 "
 `;
+
+exports[`throw error if stdin content incompatible with stdin-filepath (stdout) 1`] = `""`;
+
+exports[`throw error if stdin content incompatible with stdin-filepath (write) 1`] = `Array []`;
diff --git a/tests_integration/__tests__/__snapshots__/syntax-error.js.snap b/tests_integration/__tests__/__snapshots__/syntax-error.js.snap
new file mode 100644
index 00000000..efc4f61d
--- /dev/null
+++ b/tests_integration/__tests__/__snapshots__/syntax-error.js.snap
@@ -0,0 +1,12 @@
+// Jest Snapshot v1, https://goo.gl/fbAQLP
+
+exports[`exits with non-zero code when input has a syntax error (stderr) 1`] = `
+"stdin: SyntaxError: Unexpected token, expected ; (1:2)
+> 1 | a.2
+    |  ^
+"
+`;
+
+exports[`exits with non-zero code when input has a syntax error (stdout) 1`] = `""`;
+
+exports[`exits with non-zero code when input has a syntax error (write) 1`] = `Array []`;
diff --git a/tests_integration/__tests__/__snapshots__/with-config-precedence.js.snap b/tests_integration/__tests__/__snapshots__/with-config-precedence.js.snap
index b27fe3a2..28efd980 100644
--- a/tests_integration/__tests__/__snapshots__/with-config-precedence.js.snap
+++ b/tests_integration/__tests__/__snapshots__/with-config-precedence.js.snap
@@ -1,28 +1,40 @@
 // Jest Snapshot v1, https://goo.gl/fbAQLP
 
-exports[`CLI --stdin-filepath works with --config-precedence cli-override 1`] = `
+exports[`CLI --stdin-filepath works with --config-precedence cli-override (stdout) 1`] = `
 "let x: keyof Y = foo<typeof X>()
 "
 `;
 
-exports[`CLI --stdin-filepath works with --config-precedence file-override 1`] = `
+exports[`CLI --stdin-filepath works with --config-precedence cli-override (write) 1`] = `Array []`;
+
+exports[`CLI --stdin-filepath works with --config-precedence file-override (stdout) 1`] = `
 "let x: keyof Y = foo<typeof X>();
 "
 `;
 
-exports[`CLI --stdin-filepath works with --config-precedence prefer-file 1`] = `
+exports[`CLI --stdin-filepath works with --config-precedence file-override (write) 1`] = `Array []`;
+
+exports[`CLI --stdin-filepath works with --config-precedence prefer-file (stdout) 1`] = `
 "let x: keyof Y = foo<typeof X>();
 "
 `;
 
-exports[`CLI overrides are still applied when no config is found with --config-precedence file-override 1`] = `
+exports[`CLI --stdin-filepath works with --config-precedence prefer-file (write) 1`] = `Array []`;
+
+exports[`CLI overrides are still applied when no config is found with --config-precedence file-override (stderr) 1`] = `""`;
+
+exports[`CLI overrides are still applied when no config is found with --config-precedence file-override (stdout) 1`] = `
 "function noConfigJs() {
       console.log(\\"no-config/file.js should have no semicolons\\")
 }
 "
 `;
 
-exports[`CLI overrides gets applied when no config exists with --config-precedence prefer-file 1`] = `
+exports[`CLI overrides are still applied when no config is found with --config-precedence file-override (write) 1`] = `Array []`;
+
+exports[`CLI overrides gets applied when no config exists with --config-precedence prefer-file (stderr) 1`] = `""`;
+
+exports[`CLI overrides gets applied when no config exists with --config-precedence prefer-file (stdout) 1`] = `
 "function noConfigJs() {
        console.log(
               \\"no-config/file.js should have no semicolons\\"
@@ -31,7 +43,11 @@ exports[`CLI overrides gets applied when no config exists with --config-preceden
 "
 `;
 
-exports[`CLI overrides gets ignored when config exists with --config-precedence prefer-file 1`] = `
+exports[`CLI overrides gets applied when no config exists with --config-precedence prefer-file (write) 1`] = `Array []`;
+
+exports[`CLI overrides gets ignored when config exists with --config-precedence prefer-file (stderr) 1`] = `""`;
+
+exports[`CLI overrides gets ignored when config exists with --config-precedence prefer-file (stdout) 1`] = `
 "function js() {
         console.log(\\"js/file.js should have tab width 8\\");
 }
@@ -43,7 +59,11 @@ module.exports = {
 "
 `;
 
-exports[`CLI overrides take lower precedence with --config-precedence file-override 1`] = `
+exports[`CLI overrides gets ignored when config exists with --config-precedence prefer-file (write) 1`] = `Array []`;
+
+exports[`CLI overrides take lower precedence with --config-precedence file-override (stderr) 1`] = `""`;
+
+exports[`CLI overrides take lower precedence with --config-precedence file-override (stdout) 1`] = `
 "function js() {
         console.log(\\"js/file.js should have tab width 8\\");
 }
@@ -55,7 +75,11 @@ module.exports = {
 "
 `;
 
-exports[`CLI overrides take precedence with --config-precedence cli-override 1`] = `
+exports[`CLI overrides take lower precedence with --config-precedence file-override (write) 1`] = `Array []`;
+
+exports[`CLI overrides take precedence with --config-precedence cli-override (stderr) 1`] = `""`;
+
+exports[`CLI overrides take precedence with --config-precedence cli-override (stdout) 1`] = `
 "console.log(
   \\"jest/__best-tests__/file.js should have semi\\"
 );
@@ -108,7 +132,11 @@ function rcYaml() {
 "
 `;
 
-exports[`CLI overrides take precedence without --config-precedence 1`] = `
+exports[`CLI overrides take precedence with --config-precedence cli-override (write) 1`] = `Array []`;
+
+exports[`CLI overrides take precedence without --config-precedence (stderr) 1`] = `""`;
+
+exports[`CLI overrides take precedence without --config-precedence (stdout) 1`] = `
 "console.log(
   \\"jest/__best-tests__/file.js should have semi\\"
 );
@@ -161,17 +189,31 @@ function rcYaml() {
 "
 `;
 
-exports[`CLI validate options with --config-precedence cli-override 1`] = `
+exports[`CLI overrides take precedence without --config-precedence (write) 1`] = `Array []`;
+
+exports[`CLI validate options with --config-precedence cli-override (stderr) 1`] = `
 "Invalid printWidth value.
 Expected an integer, but received: 0.5"
 `;
 
-exports[`CLI validate options with --config-precedence file-override 1`] = `
+exports[`CLI validate options with --config-precedence cli-override (stdout) 1`] = `""`;
+
+exports[`CLI validate options with --config-precedence cli-override (write) 1`] = `Array []`;
+
+exports[`CLI validate options with --config-precedence file-override (stderr) 1`] = `
 "Invalid printWidth value.
 Expected an integer, but received: 0.5"
 `;
 
-exports[`CLI validate options with --config-precedence prefer-file 1`] = `
+exports[`CLI validate options with --config-precedence file-override (stdout) 1`] = `""`;
+
+exports[`CLI validate options with --config-precedence file-override (write) 1`] = `Array []`;
+
+exports[`CLI validate options with --config-precedence prefer-file (stderr) 1`] = `
 "Invalid printWidth value.
 Expected an integer, but received: 0.5"
 `;
+
+exports[`CLI validate options with --config-precedence prefer-file (stdout) 1`] = `""`;
+
+exports[`CLI validate options with --config-precedence prefer-file (write) 1`] = `Array []`;
diff --git a/tests_integration/__tests__/__snapshots__/with-node-modules.js.snap b/tests_integration/__tests__/__snapshots__/with-node-modules.js.snap
index 9bb5c7f5..a76fb42c 100644
--- a/tests_integration/__tests__/__snapshots__/with-node-modules.js.snap
+++ b/tests_integration/__tests__/__snapshots__/with-node-modules.js.snap
@@ -1,33 +1,53 @@
 // Jest Snapshot v1, https://goo.gl/fbAQLP
 
-exports[`doesn't ignore node_modules with --with-node-modules flag 1`] = `
+exports[`doesn't ignore node_modules with --with-node-modules flag (stderr) 1`] = `""`;
+
+exports[`doesn't ignore node_modules with --with-node-modules flag (stdout) 1`] = `
 "node_modules/node-module.js
 not_node_modules/file.js
 regular-module.js
 "
 `;
 
-exports[`doesn't ignore node_modules with --with-node-modules flag for file list 1`] = `
+exports[`doesn't ignore node_modules with --with-node-modules flag (write) 1`] = `Array []`;
+
+exports[`doesn't ignore node_modules with --with-node-modules flag for file list (stderr) 1`] = `""`;
+
+exports[`doesn't ignore node_modules with --with-node-modules flag for file list (stdout) 1`] = `
 "node_modules/node-module.js
 not_node_modules/file.js
 regular-module.js
 "
 `;
 
-exports[`ignores node_modules by default 1`] = `
+exports[`doesn't ignore node_modules with --with-node-modules flag for file list (write) 1`] = `Array []`;
+
+exports[`ignores node_modules by default (stderr) 1`] = `""`;
+
+exports[`ignores node_modules by default (stdout) 1`] = `
 "not_node_modules/file.js
 regular-module.js
 "
 `;
 
-exports[`ignores node_modules by default for file list 1`] = `
+exports[`ignores node_modules by default (write) 1`] = `Array []`;
+
+exports[`ignores node_modules by default for file list (stderr) 1`] = `""`;
+
+exports[`ignores node_modules by default for file list (stdout) 1`] = `
 "not_node_modules/file.js
 regular-module.js
 "
 `;
 
-exports[`ignores node_modules by with ./**/*.js 1`] = `
+exports[`ignores node_modules by default for file list (write) 1`] = `Array []`;
+
+exports[`ignores node_modules by with ./**/*.js (stderr) 1`] = `""`;
+
+exports[`ignores node_modules by with ./**/*.js (stdout) 1`] = `
 "./not_node_modules/file.js
 ./regular-module.js
 "
 `;
+
+exports[`ignores node_modules by with ./**/*.js (write) 1`] = `Array []`;
diff --git a/tests_integration/__tests__/__snapshots__/with-parser-inference.js.snap b/tests_integration/__tests__/__snapshots__/with-parser-inference.js.snap
index 5117e3e0..a36fd289 100644
--- a/tests_integration/__tests__/__snapshots__/with-parser-inference.js.snap
+++ b/tests_integration/__tests__/__snapshots__/with-parser-inference.js.snap
@@ -1,6 +1,8 @@
 // Jest Snapshot v1, https://goo.gl/fbAQLP
 
-exports[`infers postcss parser 1`] = `
+exports[`infers postcss parser (stderr) 1`] = `""`;
+
+exports[`infers postcss parser (stdout) 1`] = `
 "/* JavaScript */
 \\"use strict\\";
 /* Stylesheet */
@@ -10,4 +12,10 @@ exports[`infers postcss parser 1`] = `
 "
 `;
 
-exports[`infers postcss parser with --list-different 1`] = `""`;
+exports[`infers postcss parser (write) 1`] = `Array []`;
+
+exports[`infers postcss parser with --list-different (stderr) 1`] = `""`;
+
+exports[`infers postcss parser with --list-different (stdout) 1`] = `""`;
+
+exports[`infers postcss parser with --list-different (write) 1`] = `Array []`;
diff --git a/tests_integration/__tests__/__snapshots__/with-shebang.js.snap b/tests_integration/__tests__/__snapshots__/with-shebang.js.snap
index bbd86897..807b89ad 100644
--- a/tests_integration/__tests__/__snapshots__/with-shebang.js.snap
+++ b/tests_integration/__tests__/__snapshots__/with-shebang.js.snap
@@ -1,7 +1,11 @@
 // Jest Snapshot v1, https://goo.gl/fbAQLP
 
-exports[`preserves shebang 1`] = `
+exports[`preserves shebang (stderr) 1`] = `""`;
+
+exports[`preserves shebang (stdout) 1`] = `
 "#!/usr/bin/env node
 \\"use strict\\";
 "
 `;
+
+exports[`preserves shebang (write) 1`] = `Array []`;
diff --git a/tests_integration/__tests__/__snapshots__/write.js.snap b/tests_integration/__tests__/__snapshots__/write.js.snap
index bc3daa98..d54cbffc 100644
--- a/tests_integration/__tests__/__snapshots__/write.js.snap
+++ b/tests_integration/__tests__/__snapshots__/write.js.snap
@@ -1,13 +1,32 @@
 // Jest Snapshot v1, https://goo.gl/fbAQLP
 
-exports[`do not write file with --write + invalid file 1`] = `
+exports[`do not write file with --write + formated file (stderr) 1`] = `""`;
+
+exports[`do not write file with --write + formated file (stdout) 1`] = `
+"formated.js%s %dms
+"
+`;
+
+exports[`do not write file with --write + invalid file (stderr) 1`] = `
 "invalid.js: SyntaxError: Unexpected token, expected ; (1:6)
 > 1 | this is invalid!
     |      ^
 "
 `;
 
-exports[`write file with --write + unformated file 1`] = `
+exports[`do not write file with --write + invalid file (stdout) 1`] = `
+"invalid.js
+"
+`;
+
+exports[`write file with --write + unformated file (stderr) 1`] = `""`;
+
+exports[`write file with --write + unformated file (stdout) 1`] = `
+"unformated.js%s %dms
+"
+`;
+
+exports[`write file with --write + unformated file (write) 1`] = `
 Array [
   Object {
     "content": "var x = 1;
diff --git a/tests_integration/__tests__/arg-parsing.js b/tests_integration/__tests__/arg-parsing.js
index 7465a2a0..36420e2d 100644
--- a/tests_integration/__tests__/arg-parsing.js
+++ b/tests_integration/__tests__/arg-parsing.js
@@ -2,53 +2,38 @@
 
 const runPrettier = require("../runPrettier");
 
-test("boolean flags do not swallow the next argument", () => {
-  const result = runPrettier("cli/arg-parsing", ["--single-quote", "file.js"]);
-
-  expect(result.stdout).toMatchSnapshot();
-  expect(result.stderr).toMatchSnapshot();
-  expect(result.status).toEqual(0);
+describe("boolean flags do not swallow the next argument", () => {
+  runPrettier("cli/arg-parsing", ["--single-quote", "file.js"]).test({
+    status: 0
+  });
 });
 
-test("negated options work", () => {
-  const result = runPrettier("cli/arg-parsing", ["--no-semi", "file.js"]);
-
-  expect(result.stdout).toMatchSnapshot();
-  expect(result.stderr).toMatchSnapshot();
-  expect(result.status).toEqual(0);
+describe("negated options work", () => {
+  runPrettier("cli/arg-parsing", ["--no-semi", "file.js"]).test({
+    status: 0
+  });
 });
 
-test("unknown options are warned", () => {
-  const result = runPrettier("cli/arg-parsing", ["file.js", "--unknown"]);
-
-  expect(result.stdout).toMatchSnapshot();
-  expect(result.stderr).toMatchSnapshot();
-  expect(result.status).toEqual(0);
+describe("unknown options are warned", () => {
+  runPrettier("cli/arg-parsing", ["file.js", "--unknown"]).test({
+    status: 0
+  });
 });
 
-test("unknown negated options are warned", () => {
-  const result = runPrettier("cli/arg-parsing", ["file.js", "--no-unknown"]);
-
-  expect(result.stdout).toMatchSnapshot();
-  expect(result.stderr).toMatchSnapshot();
-  expect(result.status).toEqual(0);
+describe("unknown negated options are warned", () => {
+  runPrettier("cli/arg-parsing", ["file.js", "--no-unknown"]).test({
+    status: 0
+  });
 });
 
-test("deprecated options are warned", () => {
-  const result = runPrettier("cli/arg-parsing", ["file.js", "--flow-parser"]);
-
-  expect(result.stdout).toMatchSnapshot();
-  expect(result.stderr).toMatchSnapshot();
-  expect(result.status).toEqual(0);
+describe("deprecated options are warned", () => {
+  runPrettier("cli/arg-parsing", ["file.js", "--flow-parser"]).test({
+    status: 0
+  });
 });
 
-test("deprecated option values are warned", () => {
-  const result = runPrettier("cli/arg-parsing", [
-    "file.js",
-    "--trailing-comma"
-  ]);
-
-  expect(result.stdout).toMatchSnapshot();
-  expect(result.stderr).toMatchSnapshot();
-  expect(result.status).toEqual(0);
+describe("deprecated option values are warned", () => {
+  runPrettier("cli/arg-parsing", ["file.js", "--trailing-comma"]).test({
+    status: 0
+  });
 });
diff --git a/tests_integration/__tests__/config-invalid.js b/tests_integration/__tests__/config-invalid.js
index 9bdce5fa..82a3c86a 100644
--- a/tests_integration/__tests__/config-invalid.js
+++ b/tests_integration/__tests__/config-invalid.js
@@ -4,53 +4,44 @@ const runPrettier = require("../runPrettier");
 
 expect.addSnapshotSerializer(require("../path-serializer"));
 
-test("throw error with invalid config format", () => {
-  const output = runPrettier("cli/config/invalid", [
-    "--config",
-    "file/.prettierrc"
-  ]);
-  expect(output.stderr).toMatchSnapshot();
-  expect(output.status).not.toBe(0);
+describe("throw error with invalid config format", () => {
+  runPrettier("cli/config/invalid", ["--config", "file/.prettierrc"]).test({
+    status: "non-zero"
+  });
 });
 
-test("throw error with invalid config target (directory)", () => {
-  const output = runPrettier("cli/config/invalid", [
+describe("throw error with invalid config target (directory)", () => {
+  runPrettier("cli/config/invalid", [
     "--config",
     "folder/.prettierrc" // this is a directory
-  ]);
-  expect(output.stderr).toMatchSnapshot();
-  expect(output.status).not.toBe(0);
+  ]).test({
+    status: "non-zero"
+  });
 });
 
-test("throw error with invalid config option (int)", () => {
-  const output = runPrettier("cli/config/invalid", ["--config", "option/int"]);
-  expect(output.stderr).toMatchSnapshot();
-  expect(output.status).not.toBe(0);
+describe("throw error with invalid config option (int)", () => {
+  runPrettier("cli/config/invalid", ["--config", "option/int"]).test({
+    status: "non-zero"
+  });
 });
 
-test("throw error with invalid config option (trailingComma)", () => {
-  const output = runPrettier("cli/config/invalid", [
-    "--config",
-    "option/trailingComma"
-  ]);
-  expect(output.stderr).toMatchSnapshot();
-  expect(output.status).not.toBe(0);
+describe("throw error with invalid config option (trailingComma)", () => {
+  runPrettier("cli/config/invalid", ["--config", "option/trailingComma"]).test({
+    status: "non-zero"
+  });
 });
 
-test("throw error with invalid config precedence option (configPrecedence)", () => {
-  const output = runPrettier("cli/config/invalid", [
+describe("throw error with invalid config precedence option (configPrecedence)", () => {
+  runPrettier("cli/config/invalid", [
     "--config-precedence",
     "option/configPrecedence"
-  ]);
-  expect(output.stderr).toMatchSnapshot();
-  expect(output.status).not.toBe(0);
+  ]).test({
+    status: "non-zero"
+  });
 });
 
-test("show warning with unknown option", () => {
-  const output = runPrettier("cli/config/invalid", [
-    "--config",
-    "option/unknown"
-  ]);
-  expect(output.stderr).toMatchSnapshot();
-  expect(output.status).toBe(0);
+describe("show warning with unknown option", () => {
+  runPrettier("cli/config/invalid", ["--config", "option/unknown"]).test({
+    status: 0
+  });
 });
diff --git a/tests_integration/__tests__/config-resolution.js b/tests_integration/__tests__/config-resolution.js
index ef6a8a78..dcd3e48c 100644
--- a/tests_integration/__tests__/config-resolution.js
+++ b/tests_integration/__tests__/config-resolution.js
@@ -7,65 +7,53 @@ const prettier = require("../../tests_config/require_prettier");
 
 expect.addSnapshotSerializer(require("../path-serializer"));
 
-test("resolves configuration from external files", () => {
-  const output = runPrettier("cli/config/", ["**/*.js"]);
-  expect(output.stdout).toMatchSnapshot();
-  expect(output.status).toEqual(0);
+describe("resolves configuration from external files", () => {
+  runPrettier("cli/config/", ["**/*.js"]).test({
+    status: 0
+  });
 });
 
-test("resolves configuration from external files and overrides by extname", () => {
-  const output = runPrettier("cli/config/", ["**/*.ts"]);
-  expect(output.stdout).toMatchSnapshot();
-  expect(output.status).toEqual(0);
+describe("resolves configuration from external files and overrides by extname", () => {
+  runPrettier("cli/config/", ["**/*.ts"]).test({
+    status: 0
+  });
 });
 
-test("accepts configuration from --config", () => {
-  const output = runPrettier("cli/config/", [
-    "--config",
-    ".prettierrc",
-    "./js/file.js"
-  ]);
-  expect(output.stdout).toMatchSnapshot();
-  expect(output.status).toEqual(0);
+describe("accepts configuration from --config", () => {
+  runPrettier("cli/config/", ["--config", ".prettierrc", "./js/file.js"]).test({
+    status: 0
+  });
 });
 
-test("resolves configuration file with --find-config-path file", () => {
-  const output = runPrettier("cli/config/", [
-    "--find-config-path",
-    "no-config/file.js"
-  ]);
-  expect(output.stdout).toMatchSnapshot();
-  expect(output.status).toEqual(0);
+describe("resolves configuration file with --find-config-path file", () => {
+  runPrettier("cli/config/", ["--find-config-path", "no-config/file.js"]).test({
+    status: 0
+  });
 });
 
-test("resolves json configuration file with --find-config-path file", () => {
-  const output = runPrettier("cli/config/", [
-    "--find-config-path",
-    "rc-json/file.js"
-  ]);
-  expect(output.stdout).toMatchSnapshot();
-  expect(output.status).toEqual(0);
+describe("resolves json configuration file with --find-config-path file", () => {
+  runPrettier("cli/config/", ["--find-config-path", "rc-json/file.js"]).test({
+    status: 0
+  });
 });
 
-test("resolves yaml configuration file with --find-config-path file", () => {
-  const output = runPrettier("cli/config/", [
-    "--find-config-path",
-    "rc-yaml/file.js"
-  ]);
-  expect(output.stdout).toMatchSnapshot();
-  expect(output.status).toEqual(0);
+describe("resolves yaml configuration file with --find-config-path file", () => {
+  runPrettier("cli/config/", ["--find-config-path", "rc-yaml/file.js"]).test({
+    status: 0
+  });
 });
 
-test("prints nothing when no file found with --find-config-path", () => {
-  const output = runPrettier("cli/config/", ["--find-config-path", ".."]);
-  expect(output.stdout).toEqual("");
-  expect(output.status).toEqual(1);
+describe("prints nothing when no file found with --find-config-path", () => {
+  runPrettier("cli/config/", ["--find-config-path", ".."]).test({
+    stdout: "",
+    status: 1
+  });
 });
 
-test("CLI overrides take precedence", () => {
-  const output = runPrettier("cli/config/", ["--print-width", "1", "**/*.js"]);
-  expect(output.stdout).toMatchSnapshot();
-  expect(output.status).toEqual(0);
+describe("CLI overrides take precedence", () => {
+  runPrettier("cli/config/", ["--print-width", "1", "**/*.js"]).test({
+    status: 0
+  });
 });
 
 test("API resolveConfig with no args", () => {
diff --git a/tests_integration/__tests__/cursot-offset.js b/tests_integration/__tests__/cursot-offset.js
index d0b371e1..011d6b87 100644
--- a/tests_integration/__tests__/cursot-offset.js
+++ b/tests_integration/__tests__/cursot-offset.js
@@ -2,10 +2,8 @@
 
 const runPrettier = require("../runPrettier");
 
-test("write cursorOffset to stderr with --cursor-offset <int>", () => {
-  const result = runPrettier("cli", ["--cursor-offset", "2"], { input: " 1" });
-
-  expect(result.stdout).toMatchSnapshot();
-  expect(result.stderr).toMatchSnapshot();
-  expect(result.status).toEqual(0);
+describe("write cursorOffset to stderr with --cursor-offset <int>", () => {
+  runPrettier("cli", ["--cursor-offset", "2"], { input: " 1" }).test({
+    status: 0
+  });
 });
diff --git a/tests_integration/__tests__/debug-check.js b/tests_integration/__tests__/debug-check.js
index 1ec62b88..40b3120e 100644
--- a/tests_integration/__tests__/debug-check.js
+++ b/tests_integration/__tests__/debug-check.js
@@ -2,23 +2,20 @@
 
 const runPrettier = require("../runPrettier");
 
-test("doesn't crash when --debug-check is passed", () => {
-  const result = runPrettier("cli/with-shebang", [
-    "issue1890.js",
-    "--debug-check"
-  ]);
-
-  expect(result.stdout).toEqual("issue1890.js\n");
-  expect(result.stderr).toEqual("");
-  expect(result.status).toEqual(0);
-});
-
-test("checks stdin with --debug-check", () => {
-  const result = runPrettier("cli/with-shebang", ["--debug-check"], {
-    input: "0"
+describe("doesn't crash when --debug-check is passed", () => {
+  runPrettier("cli/with-shebang", ["issue1890.js", "--debug-check"]).test({
+    stdout: "issue1890.js\n",
+    stderr: "",
+    status: 0
+  });
+});
+
+describe("checks stdin with --debug-check", () => {
+  runPrettier("cli/with-shebang", ["--debug-check"], {
+    input: "0"
+  }).test({
+    stdout: "(stdin)\n",
+    stderr: "",
+    status: 0
   });
-
-  expect(result.stdout).toEqual("(stdin)\n");
-  expect(result.stderr).toEqual("");
-  expect(result.status).toEqual(0);
 });
diff --git a/tests_integration/__tests__/debug-print-doc.js b/tests_integration/__tests__/debug-print-doc.js
index 7e0d0d22..954b7284 100644
--- a/tests_integration/__tests__/debug-print-doc.js
+++ b/tests_integration/__tests__/debug-print-doc.js
@@ -2,12 +2,12 @@
 
 const runPrettier = require("../runPrettier");
 
-test("prints doc with --debug-print-doc", () => {
-  const result = runPrettier("cli/with-shebang", ["--debug-print-doc"], {
+describe("prints doc with --debug-print-doc", () => {
+  runPrettier("cli/with-shebang", ["--debug-print-doc"], {
     input: "0"
+  }).test({
+    stdout: '["0", ";", hardline, breakParent];\n',
+    stderr: "",
+    status: 0
   });
-
-  expect(result.stdout).toEqual('["0", ";", hardline, breakParent];\n');
-  expect(result.stderr).toEqual("");
-  expect(result.status).toEqual(0);
 });
diff --git a/tests_integration/__tests__/early-exit.js b/tests_integration/__tests__/early-exit.js
index 19f73bea..43dedb85 100644
--- a/tests_integration/__tests__/early-exit.js
+++ b/tests_integration/__tests__/early-exit.js
@@ -4,24 +4,23 @@ const prettier = require("../../tests_config/require_prettier");
 const runPrettier = require("../runPrettier");
 const constant = require("../../src/cli-constant");
 
-test("show version with --version", () => {
-  const result = runPrettier("cli/with-shebang", ["--version"]);
-
-  expect(result.stdout).toBe(prettier.version + "\n");
-  expect(result.status).toEqual(0);
+describe("show version with --version", () => {
+  runPrettier("cli/with-shebang", ["--version"]).test({
+    stdout: prettier.version + "\n",
+    status: 0
+  });
 });
 
-test("show usage with --help", () => {
-  const result = runPrettier("cli", ["--help"]);
-
-  expect(result.stdout).toMatchSnapshot();
-  expect(result.status).toEqual(0);
+describe("show usage with --help", () => {
+  runPrettier("cli", ["--help"]).test({
+    status: 0
+  });
 });
 
-test(`show detailed usage with --help l (alias)`, () => {
-  const result = runPrettier("cli", ["--help", "l"]);
-  expect(result.stdout).toMatchSnapshot();
-  expect(result.status).toEqual(0);
+describe(`show detailed usage with --help l (alias)`, () => {
+  runPrettier("cli", ["--help", "l"]).test({
+    status: 0
+  });
 });
 
 constant.detailedOptions.forEach(option => {
@@ -31,48 +30,40 @@ constant.detailedOptions.forEach(option => {
   ].filter(Boolean);
 
   optionNames.forEach(optionName => {
-    test(`show detailed usage with --help ${optionName}`, () => {
-      const result = runPrettier("cli", ["--help", optionName]);
-      expect(result.stdout).toMatchSnapshot();
-      expect(result.status).toEqual(0);
+    describe(`show detailed usage with --help ${optionName}`, () => {
+      runPrettier("cli", ["--help", optionName]).test({
+        status: 0
+      });
     });
   });
 });
 
-test("show warning with --help not-found", () => {
-  const result = runPrettier("cli", ["--help", "not-found"]);
-
-  expect(result.stdout).toMatchSnapshot();
-  expect(result.stderr).toMatchSnapshot();
-  expect(result.status).toEqual(0);
+describe("show warning with --help not-found", () => {
+  runPrettier("cli", ["--help", "not-found"]).test({
+    status: 0
+  });
 });
 
-test("show warning with --help not-found (typo)", () => {
-  const result = runPrettier("cli", ["--help", "parserr"]);
-
-  expect(result.stdout).toMatchSnapshot();
-  expect(result.stderr).toMatchSnapshot();
-  expect(result.status).toEqual(0);
+describe("show warning with --help not-found (typo)", () => {
+  runPrettier("cli", ["--help", "parserr"]).test({
+    status: 0
+  });
 });
 
-test("throw error with --write + --debug-check", () => {
-  const result = runPrettier("cli", ["--write", "--debug-check"]);
-
-  expect(result.stderr).toMatchSnapshot();
-  expect(result.status).toEqual(1);
+describe("throw error with --write + --debug-check", () => {
+  runPrettier("cli", ["--write", "--debug-check"]).test({
+    status: 1
+  });
 });
 
-test("throw error with --find-config-path + multiple files", () => {
-  const result = runPrettier("cli", ["--find-config-path", "abc.js", "def.js"]);
-
-  expect(result.stderr).toMatchSnapshot();
-  expect(result.status).toEqual(1);
+describe("throw error with --find-config-path + multiple files", () => {
+  runPrettier("cli", ["--find-config-path", "abc.js", "def.js"]).test({
+    status: 1
+  });
 });
 
-test("throw error and show usage with something unexpected", () => {
-  const result = runPrettier("cli", [], { isTTY: true });
-
-  expect(result.stdout).toMatchSnapshot();
-  expect(result.stderr).toMatchSnapshot();
-  expect(result.status).not.toEqual(0);
+describe("throw error and show usage with something unexpected", () => {
+  runPrettier("cli", [], { isTTY: true }).test({
+    status: "non-zero"
+  });
 });
diff --git a/tests_integration/__tests__/ignore-absolute-path.js b/tests_integration/__tests__/ignore-absolute-path.js
index 8e46de3f..a69714a7 100644
--- a/tests_integration/__tests__/ignore-absolute-path.js
+++ b/tests_integration/__tests__/ignore-absolute-path.js
@@ -3,14 +3,13 @@
 const path = require("path");
 const runPrettier = require("../runPrettier");
 
-test("support absolute filename", () => {
-  const result = runPrettier("cli/ignore-absolute-path", [
+describe("support absolute filename", () => {
+  runPrettier("cli/ignore-absolute-path", [
     path.resolve(__dirname, "../cli/ignore-absolute-path/ignored/module.js"),
     path.resolve(__dirname, "../cli/ignore-absolute-path/depth1/ignored/*.js"),
     path.resolve(__dirname, "../cli/ignore-absolute-path/regular-module.js"),
     "-l"
-  ]);
-
-  expect(result.stdout).toMatchSnapshot();
-  expect(result.status).toEqual(1);
+  ]).test({
+    status: 1
+  });
 });
diff --git a/tests_integration/__tests__/ignore-path.js b/tests_integration/__tests__/ignore-path.js
index fd7fba0e..f6a49363 100644
--- a/tests_integration/__tests__/ignore-path.js
+++ b/tests_integration/__tests__/ignore-path.js
@@ -2,21 +2,19 @@
 
 const runPrettier = require("../runPrettier");
 
-test("ignore path", () => {
-  const result = runPrettier("cli/ignore-path", [
+describe("ignore path", () => {
+  runPrettier("cli/ignore-path", [
     "**/*.js",
     "--ignore-path",
     ".gitignore",
     "-l"
-  ]);
-
-  expect(result.stdout).toMatchSnapshot();
-  expect(result.status).toEqual(1);
+  ]).test({
+    status: 1
+  });
 });
 
-test("support .prettierignore", () => {
-  const result = runPrettier("cli/ignore-path", ["**/*.js", "-l"]);
-
-  expect(result.stdout).toMatchSnapshot();
-  expect(result.status).toEqual(1);
+describe("support .prettierignore", () => {
+  runPrettier("cli/ignore-path", ["**/*.js", "-l"]).test({
+    status: 1
+  });
 });
diff --git a/tests_integration/__tests__/invalid-ignore.js b/tests_integration/__tests__/invalid-ignore.js
index 874fbe97..1d1fda68 100644
--- a/tests_integration/__tests__/invalid-ignore.js
+++ b/tests_integration/__tests__/invalid-ignore.js
@@ -4,9 +4,8 @@ const runPrettier = require("../runPrettier");
 
 expect.addSnapshotSerializer(require("../path-serializer"));
 
-test("throw error with invalid ignore", () => {
-  const result = runPrettier("cli/invalid-ignore", ["something.js"]);
-
-  expect(result.stderr).toMatchSnapshot();
-  expect(result.status).not.toEqual(0);
+describe("throw error with invalid ignore", () => {
+  runPrettier("cli/invalid-ignore", ["something.js"]).test({
+    status: "non-zero"
+  });
 });
diff --git a/tests_integration/__tests__/list-different.js b/tests_integration/__tests__/list-different.js
index 7ed2ee80..48b4d03f 100644
--- a/tests_integration/__tests__/list-different.js
+++ b/tests_integration/__tests__/list-different.js
@@ -2,12 +2,12 @@
 
 const runPrettier = require("../runPrettier");
 
-test("checks stdin with --list-different", () => {
-  const result = runPrettier("cli/with-shebang", ["--list-different"], {
+describe("checks stdin with --list-different", () => {
+  runPrettier("cli/with-shebang", ["--list-different"], {
     input: "0"
+  }).test({
+    stdout: "(stdin)\n",
+    stderr: "",
+    status: "non-zero"
   });
-
-  expect(result.stdout).toEqual("(stdin)\n");
-  expect(result.stderr).toEqual("");
-  expect(result.status).not.toEqual(0);
 });
diff --git a/tests_integration/__tests__/multiple-patterns.js b/tests_integration/__tests__/multiple-patterns.js
index 06016ba4..772715cf 100644
--- a/tests_integration/__tests__/multiple-patterns.js
+++ b/tests_integration/__tests__/multiple-patterns.js
@@ -2,85 +2,79 @@
 
 const runPrettier = require("../runPrettier");
 
-test("multiple patterns", () => {
-  const result = runPrettier("cli/multiple-patterns", [
+describe("multiple patterns", () => {
+  runPrettier("cli/multiple-patterns", [
     "directory/**/*.js",
     "other-directory/**/*.js",
     "-l"
-  ]);
-
-  expect(result.stdout).toMatchSnapshot();
-  expect(result.status).toEqual(1);
+  ]).test({
+    status: 1
+  });
 });
 
-test("multiple patterns with non exists pattern", () => {
-  const result = runPrettier("cli/multiple-patterns", [
+describe("multiple patterns with non exists pattern", () => {
+  runPrettier("cli/multiple-patterns", [
     "directory/**/*.js",
     "non-existent.js",
     "-l"
-  ]);
-
-  expect(result.stdout).toMatchSnapshot();
-  expect(result.status).toEqual(1);
+  ]).test({
+    status: 1
+  });
 });
 
-test("multiple patterns with ignore nested directories pattern", () => {
-  const result = runPrettier("cli/multiple-patterns", [
+describe("multiple patterns with ignore nested directories pattern", () => {
+  runPrettier("cli/multiple-patterns", [
     "**/*.js",
     "!**/nested-directory/**",
     "-l"
-  ]);
-
-  expect(result.stdout).toMatchSnapshot();
-  expect(result.status).toEqual(1);
+  ]).test({
+    status: 1
+  });
 });
 
-test("multiple patterns by with ignore pattern, ignores node_modules by default", () => {
-  const result = runPrettier("cli/multiple-patterns", [
+describe("multiple patterns by with ignore pattern, ignores node_modules by default", () => {
+  runPrettier("cli/multiple-patterns", [
     "**/*.js",
     "!directory/**",
     "-l"
-  ]);
-
-  expect(result.stdout).toMatchSnapshot();
-  expect(result.status).toEqual(1);
+  ]).test({
+    status: 1
+  });
 });
 
-test("multiple patterns by with ignore pattern, ignores node_modules by with ./**/*.js", () => {
-  const result = runPrettier("cli/multiple-patterns", [
+describe("multiple patterns by with ignore pattern, ignores node_modules by with ./**/*.js", () => {
+  runPrettier("cli/multiple-patterns", [
     "./**/*.js",
     "!./directory/**",
     "-l"
-  ]);
-
-  expect(result.stdout).toMatchSnapshot();
-  expect(result.status).toEqual(1);
+  ]).test({
+    status: 1
+  });
 });
 
-test("multiple patterns by with ignore pattern, doesn't ignore node_modules with --with-node-modules flag", () => {
-  const result = runPrettier("cli/multiple-patterns", [
+describe("multiple patterns by with ignore pattern, doesn't ignore node_modules with --with-node-modules flag", () => {
+  runPrettier("cli/multiple-patterns", [
     "**/*.js",
     "!directory/**",
     "-l",
     "--with-node-modules"
-  ]);
-
-  expect(result.stdout).toMatchSnapshot();
-  expect(result.status).toEqual(1);
+  ]).test({
+    status: 1
+  });
 });
 
-test("no errors on empty patterns", () => {
-  const result = runPrettier("cli/multiple-patterns");
-  expect(result.status).toEqual(0);
+describe("no errors on empty patterns", () => {
+  runPrettier("cli/multiple-patterns").test({
+    status: 0
+  });
 });
 
-test("multiple patterns, throw error and exit with non zero code on non existing files", () => {
-  const result = runPrettier("cli/multiple-patterns", [
+describe("multiple patterns, throw error and exit with non zero code on non existing files", () => {
+  runPrettier("cli/multiple-patterns", [
     "non-existent.js",
     "other-non-existent.js",
     "-l"
-  ]);
-
-  expect(result.stderr).toMatchSnapshot();
-  expect(result.status).toEqual(2);
+  ]).test({
+    status: 2
+  });
 });
diff --git a/tests_integration/__tests__/parser-api.js b/tests_integration/__tests__/parser-api.js
index 19bdea7d..104f79d1 100644
--- a/tests_integration/__tests__/parser-api.js
+++ b/tests_integration/__tests__/parser-api.js
@@ -29,12 +29,12 @@ test("allows usage of prettier's supported parsers", () => {
   expect(output).toEqual("bar();\n");
 });
 
-test("allows passing a string to resolve a parser", () => {
-  const output = runPrettier("./custom-parsers/", [
+describe("allows passing a string to resolve a parser", () => {
+  runPrettier("./custom-parsers/", [
     "./custom-rename-input.js",
     "--parser",
     "./custom-rename-parser"
-  ]);
-  expect(output.stdout).toMatchSnapshot();
-  expect(output.status).toEqual(0);
+  ]).test({
+    status: 0
+  });
 });
diff --git a/tests_integration/__tests__/stdin-filepath.js b/tests_integration/__tests__/stdin-filepath.js
index ce708d91..b3b4a793 100644
--- a/tests_integration/__tests__/stdin-filepath.js
+++ b/tests_integration/__tests__/stdin-filepath.js
@@ -2,26 +2,22 @@
 
 const runPrettier = require("../runPrettier");
 
-test("format correctly if stdin content compatible with stdin-filepath", () => {
-  const result = runPrettier(
+describe("format correctly if stdin content compatible with stdin-filepath", () => {
+  runPrettier(
     "cli",
     ["--no-color", "--stdin-filepath", "abc.css"],
     { input: ".name { display: none; }" } // css
-  );
-
-  expect(result.stdout).toMatchSnapshot();
-  expect(result.stderr).toMatchSnapshot();
-  expect(result.status).toEqual(0);
+  ).test({
+    status: 0
+  });
 });
 
-test("throw error if stdin content incompatible with stdin-filepath", () => {
-  const result = runPrettier(
+describe("throw error if stdin content incompatible with stdin-filepath", () => {
+  runPrettier(
     "cli",
     ["--no-color", "--stdin-filepath", "abc.js"],
     { input: ".name { display: none; }" } // css
-  );
-
-  expect(result.stdout).toMatchSnapshot();
-  expect(result.stderr).toMatchSnapshot();
-  expect(result.status).not.toEqual(0);
+  ).test({
+    status: "non-zero"
+  });
 });
diff --git a/tests_integration/__tests__/syntax-error.js b/tests_integration/__tests__/syntax-error.js
index 064b8805..a55f429d 100644
--- a/tests_integration/__tests__/syntax-error.js
+++ b/tests_integration/__tests__/syntax-error.js
@@ -2,10 +2,10 @@
 
 const runPrettier = require("../runPrettier");
 
-test("exits with non-zero code when input has a syntax error", () => {
-  const result = runPrettier("cli/with-shebang", ["--stdin"], {
+describe("exits with non-zero code when input has a syntax error", () => {
+  runPrettier("cli/with-shebang", ["--stdin", "--no-color"], {
     input: "a.2"
+  }).test({
+    status: 2
   });
-
-  expect(result.status).toEqual(2);
 });
diff --git a/tests_integration/__tests__/with-config-precedence.js b/tests_integration/__tests__/with-config-precedence.js
index b367a96f..1120884b 100644
--- a/tests_integration/__tests__/with-config-precedence.js
+++ b/tests_integration/__tests__/with-config-precedence.js
@@ -2,50 +2,50 @@
 
 const runPrettier = require("../runPrettier");
 
-test("CLI overrides take precedence without --config-precedence", () => {
-  const output = runPrettier("cli/config/", ["--print-width", "1", "**/*.js"]);
-  expect(output.stdout).toMatchSnapshot();
-  expect(output.status).toEqual(0);
+describe("CLI overrides take precedence without --config-precedence", () => {
+  runPrettier("cli/config/", ["--print-width", "1", "**/*.js"]).test({
+    status: 0
+  });
 });
 
-test("CLI overrides take precedence with --config-precedence cli-override", () => {
-  const output = runPrettier("cli/config/", [
+describe("CLI overrides take precedence with --config-precedence cli-override", () => {
+  runPrettier("cli/config/", [
     "--print-width",
     "1",
     "--config-precedence",
     "cli-override",
     "**/*.js"
-  ]);
-  expect(output.stdout).toMatchSnapshot();
-  expect(output.status).toEqual(0);
+  ]).test({
+    status: 0
+  });
 });
 
-test("CLI overrides take lower precedence with --config-precedence file-override", () => {
-  const output = runPrettier("cli/config/js/", [
+describe("CLI overrides take lower precedence with --config-precedence file-override", () => {
+  runPrettier("cli/config/js/", [
     "--tab-width",
     "1",
     "--config-precedence",
     "file-override",
     "**/*.js"
-  ]);
-  expect(output.stdout).toMatchSnapshot();
-  expect(output.status).toEqual(0);
+  ]).test({
+    status: 0
+  });
 });
 
-test("CLI overrides are still applied when no config is found with --config-precedence file-override", () => {
-  const output = runPrettier("cli/config/no-config/", [
+describe("CLI overrides are still applied when no config is found with --config-precedence file-override", () => {
+  runPrettier("cli/config/no-config/", [
     "--tab-width",
     "6",
     "--config-precedence",
     "file-override",
     "**/*.js"
-  ]);
-  expect(output.stdout).toMatchSnapshot();
-  expect(output.status).toEqual(0);
+  ]).test({
+    status: 0
+  });
 });
 
-test("CLI overrides gets ignored when config exists with --config-precedence prefer-file", () => {
-  const output = runPrettier("cli/config/js/", [
+describe("CLI overrides gets ignored when config exists with --config-precedence prefer-file", () => {
+  runPrettier("cli/config/js/", [
     "--print-width",
     "1",
     "--tab-width",
@@ -53,13 +53,13 @@ test("CLI overrides gets ignored when config exists with --config-precedence pre
     "--config-precedence",
     "prefer-file",
     "**/*.js"
-  ]);
-  expect(output.stdout).toMatchSnapshot();
-  expect(output.status).toEqual(0);
+  ]).test({
+    status: 0
+  });
 });
 
-test("CLI overrides gets applied when no config exists with --config-precedence prefer-file", () => {
-  const output = runPrettier("cli/config/no-config/", [
+describe("CLI overrides gets applied when no config exists with --config-precedence prefer-file", () => {
+  runPrettier("cli/config/no-config/", [
     "--print-width",
     "1",
     "--tab-width",
@@ -68,40 +68,40 @@ test("CLI overrides gets applied when no config exists with --config-precedence
     "--config-precedence",
     "prefer-file",
     "**/*.js"
-  ]);
-  expect(output.stdout).toMatchSnapshot();
-  expect(output.status).toEqual(0);
+  ]).test({
+    status: 0
+  });
 });
 
-test("CLI validate options with --config-precedence cli-override", () => {
-  const output = runPrettier("cli/config-precedence", [
+describe("CLI validate options with --config-precedence cli-override", () => {
+  runPrettier("cli/config-precedence", [
     "--config-precedence",
     "cli-override"
-  ]);
-  expect(output.stderr).toMatchSnapshot();
-  expect(output.status).not.toEqual(0);
+  ]).test({
+    status: "non-zero"
+  });
 });
 
-test("CLI validate options with --config-precedence file-override", () => {
-  const output = runPrettier("cli/config-precedence", [
+describe("CLI validate options with --config-precedence file-override", () => {
+  runPrettier("cli/config-precedence", [
     "--config-precedence",
     "file-override"
-  ]);
-  expect(output.stderr).toMatchSnapshot();
-  expect(output.status).not.toEqual(0);
+  ]).test({
+    status: "non-zero"
+  });
 });
 
-test("CLI validate options with --config-precedence prefer-file", () => {
-  const output = runPrettier("cli/config-precedence", [
+describe("CLI validate options with --config-precedence prefer-file", () => {
+  runPrettier("cli/config-precedence", [
     "--config-precedence",
     "prefer-file"
-  ]);
-  expect(output.stderr).toMatchSnapshot();
-  expect(output.status).not.toEqual(0);
+  ]).test({
+    status: "non-zero"
+  });
 });
 
-test("CLI --stdin-filepath works with --config-precedence prefer-file", () => {
-  const result = runPrettier(
+describe("CLI --stdin-filepath works with --config-precedence prefer-file", () => {
+  runPrettier(
     "cli/config/",
     [
       "--no-color",
@@ -111,15 +111,14 @@ test("CLI --stdin-filepath works with --config-precedence prefer-file", () => {
       "--config-precedence=prefer-file"
     ],
     { input: "let x: keyof Y = foo<typeof X>()" } // typescript
-  );
-
-  expect(result.stdout).toMatchSnapshot();
-  expect(result.stderr).toEqual("");
-  expect(result.status).toEqual(0);
+  ).test({
+    stderr: "",
+    status: 0
+  });
 });
 
-test("CLI --stdin-filepath works with --config-precedence file-override", () => {
-  const result = runPrettier(
+describe("CLI --stdin-filepath works with --config-precedence file-override", () => {
+  runPrettier(
     "cli/config/",
     [
       "--no-color",
@@ -129,15 +128,14 @@ test("CLI --stdin-filepath works with --config-precedence file-override", () =>
       "--config-precedence=file-override"
     ],
     { input: "let x: keyof Y = foo<typeof X>()" } // typescript
-  );
-
-  expect(result.stdout).toMatchSnapshot();
-  expect(result.stderr).toEqual("");
-  expect(result.status).toEqual(0);
+  ).test({
+    stderr: "",
+    status: 0
+  });
 });
 
-test("CLI --stdin-filepath works with --config-precedence cli-override", () => {
-  const result = runPrettier(
+describe("CLI --stdin-filepath works with --config-precedence cli-override", () => {
+  runPrettier(
     "cli/config/",
     [
       "--no-color",
@@ -147,9 +145,8 @@ test("CLI --stdin-filepath works with --config-precedence cli-override", () => {
       "--config-precedence=cli-override"
     ],
     { input: "let x: keyof Y = foo<typeof X>()" } // typescript
-  );
-
-  expect(result.stdout).toMatchSnapshot();
-  expect(result.stderr).toEqual("");
-  expect(result.status).toEqual(0);
+  ).test({
+    stderr: "",
+    status: 0
+  });
 });
diff --git a/tests_integration/__tests__/with-node-modules.js b/tests_integration/__tests__/with-node-modules.js
index 492e28c9..d1d7014b 100644
--- a/tests_integration/__tests__/with-node-modules.js
+++ b/tests_integration/__tests__/with-node-modules.js
@@ -2,52 +2,47 @@
 
 const runPrettier = require("../runPrettier");
 
-test("ignores node_modules by default", () => {
-  const result = runPrettier("cli/with-node-modules", ["**/*.js", "-l"]);
-
-  expect(result.stdout).toMatchSnapshot();
-  expect(result.status).toEqual(1);
+describe("ignores node_modules by default", () => {
+  runPrettier("cli/with-node-modules", ["**/*.js", "-l"]).test({
+    status: 1
+  });
 });
 
-test("ignores node_modules by with ./**/*.js", () => {
-  const result = runPrettier("cli/with-node-modules", ["./**/*.js", "-l"]);
-
-  expect(result.stdout).toMatchSnapshot();
-  expect(result.status).toEqual(1);
+describe("ignores node_modules by with ./**/*.js", () => {
+  runPrettier("cli/with-node-modules", ["./**/*.js", "-l"]).test({
+    status: 1
+  });
 });
 
-test("doesn't ignore node_modules with --with-node-modules flag", () => {
-  const result = runPrettier("cli/with-node-modules", [
+describe("doesn't ignore node_modules with --with-node-modules flag", () => {
+  runPrettier("cli/with-node-modules", [
     "**/*.js",
     "-l",
     "--with-node-modules"
-  ]);
-
-  expect(result.stdout).toMatchSnapshot();
-  expect(result.status).toEqual(1);
+  ]).test({
+    status: 1
+  });
 });
 
-test("ignores node_modules by default for file list", () => {
-  const result = runPrettier("cli/with-node-modules", [
+describe("ignores node_modules by default for file list", () => {
+  runPrettier("cli/with-node-modules", [
     "node_modules/node-module.js",
     "not_node_modules/file.js",
     "regular-module.js",
     "-l"
-  ]);
-
-  expect(result.stdout).toMatchSnapshot();
-  expect(result.status).toEqual(1);
+  ]).test({
+    status: 1
+  });
 });
 
-test("doesn't ignore node_modules with --with-node-modules flag for file list", () => {
-  const result = runPrettier("cli/with-node-modules", [
+describe("doesn't ignore node_modules with --with-node-modules flag for file list", () => {
+  runPrettier("cli/with-node-modules", [
     "node_modules/node-module.js",
     "not_node_modules/file.js",
     "regular-module.js",
     "-l",
     "--with-node-modules"
-  ]);
-
-  expect(result.stdout).toMatchSnapshot();
-  expect(result.status).toEqual(1);
+  ]).test({
+    status: 1
+  });
 });
diff --git a/tests_integration/__tests__/with-parser-inference.js b/tests_integration/__tests__/with-parser-inference.js
index f6acad02..c27646c7 100644
--- a/tests_integration/__tests__/with-parser-inference.js
+++ b/tests_integration/__tests__/with-parser-inference.js
@@ -2,19 +2,14 @@
 
 const runPrettier = require("../runPrettier");
 
-test("infers postcss parser", () => {
-  const result = runPrettier("cli/with-parser-inference", ["*"]);
-
-  expect(result.stdout).toMatchSnapshot();
-  expect(result.status).toEqual(0);
+describe("infers postcss parser", () => {
+  runPrettier("cli/with-parser-inference", ["*"]).test({
+    status: 0
+  });
 });
 
-test("infers postcss parser with --list-different", () => {
-  const result = runPrettier("cli/with-parser-inference", [
-    "--list-different",
-    "*"
-  ]);
-
-  expect(result.stdout).toMatchSnapshot();
-  expect(result.status).toEqual(0);
+describe("infers postcss parser with --list-different", () => {
+  runPrettier("cli/with-parser-inference", ["--list-different", "*"]).test({
+    status: 0
+  });
 });
diff --git a/tests_integration/__tests__/with-shebang.js b/tests_integration/__tests__/with-shebang.js
index e3dfa2b5..e90f6363 100644
--- a/tests_integration/__tests__/with-shebang.js
+++ b/tests_integration/__tests__/with-shebang.js
@@ -2,9 +2,8 @@
 
 const runPrettier = require("../runPrettier");
 
-test("preserves shebang", () => {
-  const result = runPrettier("cli/with-shebang", ["issue1890.js"]);
-
-  expect(result.stdout).toMatchSnapshot();
-  expect(result.status).toEqual(0);
+describe("preserves shebang", () => {
+  runPrettier("cli/with-shebang", ["issue1890.js"]).test({
+    status: 0
+  });
 });
diff --git a/tests_integration/__tests__/write.js b/tests_integration/__tests__/write.js
index 002cb139..8f7405ef 100644
--- a/tests_integration/__tests__/write.js
+++ b/tests_integration/__tests__/write.js
@@ -2,28 +2,22 @@
 
 const runPrettier = require("../runPrettier");
 
-test("write file with --write + unformated file", () => {
-  const result = runPrettier("cli/write", ["--write", "unformated.js"]);
-
-  expect(result.write).toMatchSnapshot();
-  expect(result.status).toEqual(0);
+describe("write file with --write + unformated file", () => {
+  runPrettier("cli/write", ["--write", "unformated.js"]).test({
+    status: 0
+  });
 });
 
-test("do not write file with --write + formated file", () => {
-  const result = runPrettier("cli/write", ["--write", "formated.js"]);
-
-  expect(result.write).toHaveLength(0);
-  expect(result.status).toEqual(0);
+describe("do not write file with --write + formated file", () => {
+  runPrettier("cli/write", ["--write", "formated.js"]).test({
+    write: [],
+    status: 0
+  });
 });
 
-test("do not write file with --write + invalid file", () => {
-  const result = runPrettier("cli/write", [
-    "--write",
-    "invalid.js",
-    "--no-color"
-  ]);
-
-  expect(result.stderr).toMatchSnapshot();
-  expect(result.write).toHaveLength(0);
-  expect(result.status).not.toEqual(0);
+describe("do not write file with --write + invalid file", () => {
+  runPrettier("cli/write", ["--write", "invalid.js", "--no-color"]).test({
+    write: [],
+    status: "non-zero"
+  });
 });
diff --git a/tests_integration/runPrettier.js b/tests_integration/runPrettier.js
index 1d2e4da0..91281886 100644
--- a/tests_integration/runPrettier.js
+++ b/tests_integration/runPrettier.js
@@ -81,7 +81,27 @@ function runPrettier(dir, args, options) {
     jest.restoreAllMocks();
   }
 
-  return { status, stdout, stderr, write };
+  const result = { status, stdout, stderr, write };
+
+  const testResult = testOptions => {
+    testOptions = testOptions || {};
+
+    Object.keys(result).forEach(name => {
+      test(`(${name})`, () => {
+        if (name in testOptions) {
+          if (name === "status" && testOptions[name] === "non-zero") {
+            expect(result[name]).not.toEqual(0);
+          } else {
+            expect(result[name]).toEqual(testOptions[name]);
+          }
+        } else {
+          expect(result[name]).toMatchSnapshot();
+        }
+      });
+    });
+  };
+
+  return { test: testResult };
 
   function appendStdout(text) {
     if (status === undefined) {