@Test
void shouldTestBooleanOperator() {

    assertThat(target.getOperatorFromValue(EQ), is("="));
    assertThat(target.getOperatorFromValue(LT), is("<"));
    assertThat(target.getOperatorFromValue(LTE), is("<="));
    assertThat(target.getOperatorFromValue(GT), is(">"));
    assertThat(target.getOperatorFromValue(GTE), is(">="));
}