@Test(expected = ItemNotFoundException.class)
public void shouldFailToReturnAncestorWhenDepthIsGreaterThanNodeDepth() throws Exception {
altimaModel.getAncestor(40);
}
@Test
public void shouldReturnSelfForAncestorOfDepthEqualToDepthOfNode() throws Exception {
assertThat(altimaModel.getAncestor(altimaModel.getDepth()), is((Item) altimaModel));
assertThat(altimaModel.getAncestor(altimaModel.getDepth() - 1), is((Item) altima));
}
@Test
public void shouldReturnRootForAncestorOfDepthZero() throws Exception {
assertThat(altimaModel.getAncestor(0), is((Item) rootNode));
}
@Test
public void shouldReturnAncestorAtLevelOneForAncestorOfDepthOne() throws Exception {
assertThat(altimaModel.getAncestor(1), is((Item) cars));
}
@Test(expected = ItemNotFoundException.class)
public void shouldNotAllowNegativeAncestorDepth() throws Exception {
altimaModel.getAncestor(-1);
}