func (t *NoErrorsTest) Fdatasync() {
var n int
var err error
if !fsutil.FdatasyncSupported {
return
}
// Open the file.
t.f1, err = os.OpenFile(path.Join(t.Dir, "foo"), os.O_WRONLY, 0)
AssertEq(nil, err)
// Write some contents to the file.
n, err = t.f1.Write([]byte("taco"))
AssertEq(nil, err)
AssertEq(4, n)
AssertThat(t.getFlushes(), ElementsAre())
AssertThat(t.getFsyncs(), ElementsAre())
// Fdatasync.
err = fsutil.Fdatasync(t.f1)
AssertEq(nil, err)
AssertThat(t.getFlushes(), ElementsAre())
AssertThat(t.getFsyncs(), ElementsAre("taco"))
// Write some more contents.
n, err = t.f1.Write([]byte("s"))
AssertEq(nil, err)
AssertEq(1, n)
AssertThat(t.getFlushes(), ElementsAre())
AssertThat(t.getFsyncs(), ElementsAre("taco"))
// Fdatasync.
err = fsutil.Fdatasync(t.f1)
AssertEq(nil, err)
AssertThat(t.getFlushes(), ElementsAre())
AssertThat(t.getFsyncs(), ElementsAre("taco", "tacos"))
}
func (t *FsyncErrorTest) Fdatasync() {
var err error
if !fsutil.FdatasyncSupported {
return
}
// Open the file.
t.f1, err = os.OpenFile(path.Join(t.Dir, "foo"), os.O_RDWR, 0)
AssertEq(nil, err)
// Fdatasync.
err = fsutil.Fdatasync(t.f1)
ExpectThat(err, Error(HasSubstr("no such file")))
}