@Test
    public void testDenseTensorInDenseForm() {
        Tensor.Builder builder = Tensor.Builder.of(TensorType.fromSpec("tensor(x[2],y[3])"));
        builder.cell().label("x", 0).label("y", 0).value(2.0);
        builder.cell().label("x", 0).label("y", 1).value(3.0);
        builder.cell().label("x", 0).label("y", 2).value(4.0);
        builder.cell().label("x", 1).label("y", 0).value(5.0);
        builder.cell().label("x", 1).label("y", 1).value(6.0);
        builder.cell().label("x", 1).label("y", 2).value(7.0);
        Tensor expected = builder.build();
        String denseJson = "{\"values\":[2.0, 3.0, 4.0, 5.0, 6.0, 7.0]}";
        Tensor decoded = JsonFormat.decode(expected.type(), denseJson.getBytes(StandardCharsets.UTF_8));
        assertEquals(expected, decoded);
    }
Tests parsing of various tensor values set at the root, i.e. no 'cells', 'blocks' or 'values'
vespajlib/src/test/java/com/yahoo/tensor/serialization/JsonFormatTestCase.java