Function TestRWFileHandleWriteAt

vfs/read_write_test.go:340–388

(t *testing.T)

}

func TestRWFileHandleWriteAt(t *testing.T) {
	r, vfs, fh := rwHandleCreateWriteOnly(t)

	offset := func() int64 {
		n, err := fh.Seek(0, io.SeekCurrent)
		require.NoError(t, err)
		return n
	}

	// Name
	assert.Equal(t, "file1", fh.Name())

	// Preconditions
	assert.Equal(t, int64(0), offset())
	assert.True(t, fh.opened)
	assert.False(t, fh.writeCalled)

	// Write the data
	n, err := fh.WriteAt([]byte("hello**"), 0)
	assert.NoError(t, err)
	assert.Equal(t, 7, n)

	// After write
	assert.Equal(t, int64(0), offset())
	assert.True(t, fh.writeCalled)

	// Write more data
	n, err = fh.WriteAt([]byte(" world"), 5)
	assert.NoError(t, err)
	assert.Equal(t, 6, n)

	// Close
	assert.NoError(t, fh.Close())

	// Check can't write on closed handle
	n, err = fh.WriteAt([]byte("hello"), 0)
	assert.Equal(t, ECLOSED, err)
	assert.Equal(t, 0, n)

	// check vfs
	root, err := vfs.Root()
	require.NoError(t, err)
	checkListing(t, root, []string{"file1,11,false"})

	// check the underlying r.Fremote but not the modtime
	file1 := fstest.NewItem("file1", "hello world", t1)
	vfs.WaitForWriters(waitForWritersDelay)
	fstest.CheckListingWithPrecision(t, r.Fremote, []fstest.Item{file1}, []string{}, fs.ModTimeNotSupported)
}

func TestRWFileHandleWriteNoWrite(t *testing.T) {
	r, vfs, fh := rwHandleCreateWriteOnly(t)