@Test
public void areComplementary() {

    assertThat(DataTableUtils.areComplementary(
            Arrays.asList("Header", "", " "),
            Arrays.asList("", "Value1", "Value2")
    ), is(true));
    assertThat(DataTableUtils.areComplementary(
            Arrays.asList("Header1", "ValueA", ""),
            Arrays.asList("Header2", "", "Value2")
    ), is(false));
}