Function TestBitmap_FromBuffer

serialization_test.go:428–560

(t *testing.T)

}

func TestBitmap_FromBuffer(t *testing.T) {
	t.Run("empty bitmap", func(t *testing.T) {
		rb := NewBitmap()

		buf := &bytes.Buffer{}
		_, err := rb.WriteTo(buf)

		require.NoError(t, err)
		assert.EqualValues(t, buf.Len(), rb.GetSerializedSizeInBytes())

		newRb := NewBitmap()
		newRb.FromBuffer(buf.Bytes())

		require.NoError(t, err)
		assert.True(t, rb.Equals(newRb))
	})

	t.Run("basic bitmap of 7 elements", func(t *testing.T) {
		rb := BitmapOf(1, 2, 3, 4, 5, 100, 1000)

		buf := &bytes.Buffer{}
		_, err := rb.WriteTo(buf)

		require.NoError(t, err)

		newRb := NewBitmap()
		_, err = newRb.FromBuffer(buf.Bytes())

		require.NoError(t, err)
		assert.True(t, rb.Equals(newRb))
	})

	t.Run("bitmap with runs", func(t *testing.T) {
		file := "testdata/bitmapwithruns.bin"

		buf, err := os.ReadFile(file)
		if err != nil {
			fmt.Fprintf(os.Stderr, "\n\nIMPORTANT: For testing file IO, the roaring library requires disk access.\nWe omit some tests for now.\n\n")
			return
		}

		rb := NewBitmap()
		_, err = rb.FromBuffer(buf)

		require.NoError(t, err)
		assert.EqualValues(t, 3, rb.Stats().RunContainers)
		assert.EqualValues(t, 11, rb.Stats().Containers)
	})

	t.Run("bitmap without runs", func(t *testing.T) {
		fn := "testdata/bitmapwithruns.bin"
		buf, err := os.ReadFile(fn)

		if err != nil {
			fmt.Fprintf(os.Stderr, "\n\nIMPORTANT: For testing file IO, the roaring library requires disk access.\nWe omit some tests for now.\n\n")
			return
		}