@Test
public void isBST() {
assertTrue(TreeUtilsTest.isBST(TreeUtils.createBSTFromRange(0, 9)));
assertTrue(TreeUtilsTest.isBST(TreeUtils.createBSTFromRange(5, 9)));
assertTrue(TreeUtilsTest.isBST(TreeUtils.createBSTFromRange(0, 2)));
}
@Test
public void startEqualsEnd() {
Node<Integer> aux = TreeUtils.createBSTFromRange(5, 5);
assertTrue(TreeUtilsTest.rootWithNoChild(aux));
}
@Test
public void startBiggerThanEnd() {
assertEquals(TreeUtils.createBSTFromRange(5, 4), null);
}