@Test
    void testAllowNullDimension() {
        TensorAddress s1 = ofLabels("1", null, "2");
        TensorAddress s2 = ofLabels("1", "2");
        assertNotEquals(s1, s2);
        assertEquals(-1, s1.numericLabel(1));
        assertNull(s1.label(1));
    }
Test for tensor address.

@author baldersheim
vespajlib/src/test/java/com/yahoo/tensor/TensorAddressTestCase.java