@Test
    public void testTwoMappedSerialization() {
        TensorType type = new TensorType.Builder().mapped("x").mapped("y").build();
        Tensor tensor = MixedTensor.Builder.of(type).
                cell().label("x", "0").label("y", "0").value(1).
                cell().label("x", "0").label("y", "1").value(2).
                cell().label("x", "1").label("y", "0").value(4).
                cell().label("x", "1").label("y", "1").value(5).
                cell().label("x", "1").label("y", "2").value(6).
                build();
        assertSerialization(tensor);
    }
Tests for the mixed binary format.

@author lesters
vespajlib/src/test/java/com/yahoo/tensor/serialization/MixedBinaryFormatTestCase.java