@Test
    public void testScalar() {
        TensorType type = new TensorType.Builder().build();
        Tensor scalar = MixedTensor.Builder.of(type).cell().value(42.0).build();
        assertEquals(scalar.asDouble(), 42.0, 1e-6);
    }
Basic mixed tensor tests. Tensor operations are tested in EvaluationTestCase

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