Function TestRWFileHandleMethodsWrite

vfs/read_write_test.go:265–338

------------------------------------------------------------

(t *testing.T)

/// ------------------------------------------------------------

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

	// String
	assert.Equal(t, "file1 (rw)", fh.String())
	assert.Equal(t, "<nil *RWFileHandle>", (*RWFileHandle)(nil).String())
	assert.Equal(t, "<nil *RWFileHandle.file>", new(RWFileHandle).String())

	// Node
	node := fh.Node()
	assert.Equal(t, "file1", node.Name())

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

	// Offset #1
	assert.Equal(t, int64(0), offset())
	assert.Equal(t, int64(0), node.Size())

	// Size #1
	assert.Equal(t, int64(0), fh.Size())

	// Write
	n, err := fh.Write([]byte("hello"))
	assert.NoError(t, err)
	assert.Equal(t, 5, n)

	// Offset #2
	assert.Equal(t, int64(5), offset())
	assert.Equal(t, int64(5), node.Size())

	// Size #2
	assert.Equal(t, int64(5), fh.Size())

	// WriteString
	n, err = fh.WriteString(" world!")
	assert.NoError(t, err)
	assert.Equal(t, 7, n)

	// Sync
	err = fh.Sync()
	assert.NoError(t, err)

	// Stat
	var fi os.FileInfo
	fi, err = fh.Stat()
	assert.NoError(t, err)
	assert.Equal(t, int64(12), fi.Size())
	assert.Equal(t, "file1", fi.Name())

	// Truncate
	err = fh.Truncate(11)
	assert.NoError(t, err)

	// Close