fusego/samples/hellofs/hello_fs_test.go

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// Copyright 2015 Google Inc. All Rights Reserved.
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//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
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package hellofs_test
import (
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"io"
"io/ioutil"
"os"
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"path"
"syscall"
"testing"
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"github.com/jacobsa/fuse/fusetesting"
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"github.com/jacobsa/fuse/samples"
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"github.com/jacobsa/fuse/samples/hellofs"
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. "github.com/jacobsa/oglematchers"
. "github.com/jacobsa/ogletest"
)
func TestHelloFS(t *testing.T) { RunTests(t) }
////////////////////////////////////////////////////////////////////////
// Boilerplate
////////////////////////////////////////////////////////////////////////
type HelloFSTest struct {
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samples.SampleTest
}
func init() { RegisterTestSuite(&HelloFSTest{}) }
func (t *HelloFSTest) SetUp(ti *TestInfo) {
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var err error
t.Server, err = hellofs.NewHelloFS(&t.Clock)
AssertEq(nil, err)
t.SampleTest.SetUp(ti)
}
////////////////////////////////////////////////////////////////////////
// Test functions
////////////////////////////////////////////////////////////////////////
func (t *HelloFSTest) ReadDir_Root() {
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entries, err := fusetesting.ReadDirPicky(t.Dir)
AssertEq(nil, err)
AssertEq(2, len(entries))
var fi os.FileInfo
// dir
fi = entries[0]
ExpectEq("dir", fi.Name())
ExpectEq(0, fi.Size())
ExpectEq(os.ModeDir|0555, fi.Mode())
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ExpectEq(0, t.Clock.Now().Sub(fi.ModTime()), "ModTime: %v", fi.ModTime())
ExpectTrue(fi.IsDir())
// hello
fi = entries[1]
ExpectEq("hello", fi.Name())
ExpectEq(len("Hello, world!"), fi.Size())
ExpectEq(0444, fi.Mode())
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ExpectEq(0, t.Clock.Now().Sub(fi.ModTime()), "ModTime: %v", fi.ModTime())
ExpectFalse(fi.IsDir())
}
func (t *HelloFSTest) ReadDir_Dir() {
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entries, err := fusetesting.ReadDirPicky(path.Join(t.Dir, "dir"))
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AssertEq(nil, err)
AssertEq(1, len(entries))
var fi os.FileInfo
// world
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fi = entries[0]
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ExpectEq("world", fi.Name())
ExpectEq(len("Hello, world!"), fi.Size())
ExpectEq(0444, fi.Mode())
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ExpectEq(0, t.Clock.Now().Sub(fi.ModTime()), "ModTime: %v", fi.ModTime())
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ExpectFalse(fi.IsDir())
}
func (t *HelloFSTest) ReadDir_NonExistent() {
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_, err := fusetesting.ReadDirPicky(path.Join(t.Dir, "foobar"))
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AssertNe(nil, err)
ExpectThat(err, Error(HasSubstr("no such file")))
}
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func (t *HelloFSTest) Stat_Hello() {
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fi, err := os.Stat(path.Join(t.Dir, "hello"))
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AssertEq(nil, err)
ExpectEq("hello", fi.Name())
ExpectEq(len("Hello, world!"), fi.Size())
ExpectEq(0444, fi.Mode())
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ExpectEq(0, t.Clock.Now().Sub(fi.ModTime()), "ModTime: %v", fi.ModTime())
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ExpectFalse(fi.IsDir())
ExpectEq(1, fi.Sys().(*syscall.Stat_t).Nlink)
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}
func (t *HelloFSTest) Stat_Dir() {
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fi, err := os.Stat(path.Join(t.Dir, "dir"))
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AssertEq(nil, err)
ExpectEq("dir", fi.Name())
ExpectEq(0, fi.Size())
ExpectEq(0555|os.ModeDir, fi.Mode())
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ExpectEq(0, t.Clock.Now().Sub(fi.ModTime()), "ModTime: %v", fi.ModTime())
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ExpectTrue(fi.IsDir())
ExpectEq(1, fi.Sys().(*syscall.Stat_t).Nlink)
}
func (t *HelloFSTest) Stat_World() {
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fi, err := os.Stat(path.Join(t.Dir, "dir/world"))
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AssertEq(nil, err)
ExpectEq("world", fi.Name())
ExpectEq(len("Hello, world!"), fi.Size())
ExpectEq(0444, fi.Mode())
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ExpectEq(0, t.Clock.Now().Sub(fi.ModTime()), "ModTime: %v", fi.ModTime())
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ExpectFalse(fi.IsDir())
ExpectEq(1, fi.Sys().(*syscall.Stat_t).Nlink)
}
func (t *HelloFSTest) Stat_NonExistent() {
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_, err := os.Stat(path.Join(t.Dir, "foobar"))
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AssertNe(nil, err)
ExpectThat(err, Error(HasSubstr("no such file")))
}
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func (t *HelloFSTest) ReadFile_Hello() {
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slice, err := ioutil.ReadFile(path.Join(t.Dir, "hello"))
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AssertEq(nil, err)
ExpectEq("Hello, world!", string(slice))
}
func (t *HelloFSTest) ReadFile_Dir() {
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_, err := ioutil.ReadFile(path.Join(t.Dir, "dir"))
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AssertNe(nil, err)
ExpectThat(err, Error(HasSubstr("is a directory")))
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}
func (t *HelloFSTest) ReadFile_World() {
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slice, err := ioutil.ReadFile(path.Join(t.Dir, "dir/world"))
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AssertEq(nil, err)
ExpectEq("Hello, world!", string(slice))
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}
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func (t *HelloFSTest) OpenAndRead() {
var buf []byte = make([]byte, 1024)
var n int
var off int64
var err error
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// Open the file.
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f, err := os.Open(path.Join(t.Dir, "hello"))
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defer func() {
if f != nil {
ExpectEq(nil, f.Close())
}
}()
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AssertEq(nil, err)
// Seeking shouldn't affect the random access reads below.
_, err = f.Seek(7, 0)
AssertEq(nil, err)
// Random access reads
n, err = f.ReadAt(buf[:2], 0)
AssertEq(nil, err)
ExpectEq(2, n)
ExpectEq("He", string(buf[:n]))
n, err = f.ReadAt(buf[:2], int64(len("Hel")))
AssertEq(nil, err)
ExpectEq(2, n)
ExpectEq("lo", string(buf[:n]))
n, err = f.ReadAt(buf[:3], int64(len("Hello, wo")))
AssertEq(nil, err)
ExpectEq(3, n)
ExpectEq("rld", string(buf[:n]))
// Read beyond end.
n, err = f.ReadAt(buf[:3], int64(len("Hello, world")))
AssertEq(io.EOF, err)
ExpectEq(1, n)
ExpectEq("!", string(buf[:n]))
// Seek then read the rest.
off, err = f.Seek(int64(len("Hel")), 0)
AssertEq(nil, err)
AssertEq(len("Hel"), off)
n, err = io.ReadFull(f, buf[:len("lo, world!")])
AssertEq(nil, err)
ExpectEq(len("lo, world!"), n)
ExpectEq("lo, world!", string(buf[:n]))
}
func (t *HelloFSTest) Open_NonExistent() {
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_, err := os.Open(path.Join(t.Dir, "foobar"))
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AssertNe(nil, err)
ExpectThat(err, Error(HasSubstr("no such file")))
}