MemFSTest.ReadDirWhileModifying
parent
b53eac308c
commit
df6feb98c5
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@ -1089,5 +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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