func (s *fuseTestSuite) TestSimpleFile() {
datasetName := "TestSimpleFile"
str := spec.CreateValueSpecString("ldb", s.LdbDir, datasetName)
var testfs pathfs.FileSystem
start(str, func(fs pathfs.FileSystem) { testfs = fs })
file, code := testfs.Create("coconut", uint32(os.O_CREATE|os.O_RDWR), 0644, nil)
assert.Equal(s.T(), fuse.OK, code)
n, code := file.Write([]byte("Lime!"), 0)
assert.Equal(s.T(), uint32(5), n)
assertAttr(s, testfs, "coconut", 0644|fuse.S_IFREG, 5)
data := make([]byte, 5)
rr, code := file.Read(data, 0)
assert.Equal(s.T(), fuse.OK, code)
assert.Equal(s.T(), 5, rr.Size())
assert.Equal(s.T(), "Lime!", string(data))
code = testfs.Truncate("coconut", 4, nil)
assert.Equal(s.T(), fuse.OK, code)
assertAttr(s, testfs, "coconut", 0644|fuse.S_IFREG, 4)
rr, code = file.Read(data, 0)
assert.Equal(s.T(), fuse.OK, code)
assert.Equal(s.T(), 4, rr.Size())
assert.Equal(s.T(), "Lime!", string(data))
}