public void shouldParseDynamicOperandFromStringContainingDepthWithNoSelectorOnlyIfThereIsOneSelectorAsSource() {
Source source = new NamedSelector(selectorName("tableA"));
DynamicOperand operand = parser.parseDynamicOperand(tokens("DEPTH()"), typeSystem, source);
assertThat(operand, is(instanceOf(NodeDepth.class)));
NodeDepth depth = (NodeDepth)operand;
assertThat(depth.selectorName(), is(selectorName("tableA")));
}
@Test( expected = ParsingException.class )
public void shouldFailToParseDynamicOperandFromStringContainingDepthWithNoSelectorIfTheSourceIsNotASelector() {
parser.parseDynamicOperand(tokens("DEPTH()"), typeSystem, mock(Source.class));