Finished filling out MemFSTest TODOs.
commit
125491a6e9
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@ -481,23 +481,137 @@ func (t *MemFSTest) ModifyExistingFile_InRoot() {
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}
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func (t *MemFSTest) ModifyExistingFile_InSubDir() {
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AssertTrue(false, "TODO")
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var err error
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var n int
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var fi os.FileInfo
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var stat *syscall.Stat_t
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// Create a sub-directory.
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dirName := path.Join(t.mfs.Dir(), "dir")
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err = os.Mkdir(dirName, 0700)
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AssertEq(nil, err)
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// Write a file.
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fileName := path.Join(dirName, "foo")
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createTime := t.clock.Now()
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err = ioutil.WriteFile(fileName, []byte("Jello, world!"), 0600)
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AssertEq(nil, err)
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// Simulate time advancing.
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t.clock.AdvanceTime(time.Second)
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// Open the file and modify it.
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f, err := os.OpenFile(fileName, os.O_WRONLY, 0400)
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t.toClose = append(t.toClose, f)
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AssertEq(nil, err)
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modifyTime := t.clock.Now()
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n, err = f.WriteAt([]byte("H"), 0)
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AssertEq(nil, err)
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AssertEq(1, n)
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// Simulate time advancing.
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t.clock.AdvanceTime(time.Second)
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// Stat the file.
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fi, err = os.Stat(fileName)
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stat = fi.Sys().(*syscall.Stat_t)
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AssertEq(nil, err)
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ExpectEq("foo", fi.Name())
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ExpectEq(len("Hello, world!"), fi.Size())
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ExpectEq(0600, fi.Mode())
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ExpectEq(0, fi.ModTime().Sub(modifyTime))
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ExpectFalse(fi.IsDir())
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ExpectNe(0, stat.Ino)
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ExpectEq(1, stat.Nlink)
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ExpectEq(currentUid(), stat.Uid)
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ExpectEq(currentGid(), stat.Gid)
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ExpectEq(len("Hello, world!"), stat.Size)
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ExpectEq(0, timespecToTime(stat.Mtimespec).Sub(modifyTime))
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ExpectEq(0, timespecToTime(stat.Birthtimespec).Sub(createTime))
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// Read the file back.
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slice, err := ioutil.ReadFile(fileName)
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AssertEq(nil, err)
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ExpectEq("Hello, world!", string(slice))
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}
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func (t *MemFSTest) UnlinkFile_Exists() {
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AssertTrue(false, "TODO")
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}
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var err error
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func (t *MemFSTest) UnlinkFile_NotAFile() {
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AssertTrue(false, "TODO")
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// Write a file.
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fileName := path.Join(t.mfs.Dir(), "foo")
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err = ioutil.WriteFile(fileName, []byte("Jello, world!"), 0600)
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AssertEq(nil, err)
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// Unlink it.
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err = os.Remove(fileName)
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AssertEq(nil, err)
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// Statting it should fail.
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_, err = os.Stat(fileName)
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AssertNe(nil, err)
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ExpectThat(err, Error(HasSubstr("no such file")))
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// Nothing should be in the directory.
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entries, err := ioutil.ReadDir(t.mfs.Dir())
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AssertEq(nil, err)
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ExpectThat(entries, ElementsAre())
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}
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func (t *MemFSTest) UnlinkFile_NonExistent() {
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AssertTrue(false, "TODO")
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err := os.Remove(path.Join(t.mfs.Dir(), "foo"))
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AssertNe(nil, err)
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ExpectThat(err, Error(HasSubstr("no such file")))
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}
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func (t *MemFSTest) UnlinkFile_StillOpen() {
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AssertTrue(false, "TODO")
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fileName := path.Join(t.mfs.Dir(), "foo")
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// Create and open a file.
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f, err := os.OpenFile(fileName, os.O_RDWR|os.O_CREATE, 0600)
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t.toClose = append(t.toClose, f)
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AssertEq(nil, err)
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// Write some data into it.
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n, err := f.Write([]byte("taco"))
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AssertEq(nil, err)
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AssertEq(4, n)
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// Unlink it.
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err = os.Remove(fileName)
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AssertEq(nil, err)
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// The directory should no longer contain it.
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entries, err := ioutil.ReadDir(t.mfs.Dir())
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AssertEq(nil, err)
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ExpectThat(entries, ElementsAre())
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// We should be able to stat the file. It should still show as having
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// contents, but with no links.
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fi, err := f.Stat()
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AssertEq(nil, err)
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ExpectEq(4, fi.Size())
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ExpectEq(0, fi.Sys().(*syscall.Stat_t).Nlink)
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// The contents should still be available.
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buf := make([]byte, 1024)
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n, err = f.ReadAt(buf, 0)
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AssertEq(nil, err)
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AssertEq(4, n)
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ExpectEq("taco", buf[:4])
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// Writing should still work, too.
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n, err = f.Write([]byte("burrito"))
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AssertEq(nil, err)
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AssertEq(4, n)
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}
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func (t *MemFSTest) Rmdir_NonEmpty() {
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@ -645,10 +759,6 @@ func (t *MemFSTest) CaseSensitive() {
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}
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}
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func (t *MemFSTest) FileReadsAndWrites() {
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AssertTrue(false, "TODO")
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}
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func (t *MemFSTest) WriteOverlapsEndOfFile() {
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var err error
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var n int
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@ -979,5 +1089,59 @@ func (t *MemFSTest) Chtimes() {
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}
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func (t *MemFSTest) ReadDirWhileModifying() {
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AssertTrue(false, "TODO")
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dirName := path.Join(t.mfs.Dir(), "dir")
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createFile := func(name string) {
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AssertEq(nil, ioutil.WriteFile(path.Join(dirName, name), []byte{}, 0400))
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}
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// Create a directory.
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err := os.Mkdir(dirName, 0700)
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AssertEq(nil, err)
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// Open the directory.
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d, err := os.Open(dirName)
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t.toClose = append(t.toClose, d)
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AssertEq(nil, err)
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// Add four files.
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createFile("foo")
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createFile("bar")
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createFile("baz")
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createFile("qux")
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// Read one entry from the directory.
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names, err := d.Readdirnames(1)
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AssertEq(nil, err)
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AssertThat(names, ElementsAre("foo"))
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// Make two holes in the directory.
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AssertEq(nil, os.Remove(path.Join(dirName, "foo")))
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AssertEq(nil, os.Remove(path.Join(dirName, "baz")))
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// Add a bunch of files to the directory.
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createFile("blah_0")
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createFile("blah_1")
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createFile("blah_2")
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createFile("blah_3")
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createFile("blah_4")
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// Continue reading from the directory, noting the names we see.
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namesSeen := make(map[string]bool)
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for {
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names, err = d.Readdirnames(1)
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for _, n := range names {
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namesSeen[n] = true
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}
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if err == io.EOF {
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break
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}
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AssertEq(nil, err)
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}
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// Posix requires that we should have seen bar and qux, which we didn't
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// delete.
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ExpectTrue(namesSeen["bar"])
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ExpectTrue(namesSeen["qux"])
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}
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