def test_isLeaf_invalid_leaf(self):
     output = isLeaf(TREELIB, TREELIB_INVALID_LEAF)
     assert output is False
 def test_isLeaf_none_leaf(self):
     output = isLeaf(TREELIB, None)
     assert output is False
 def test_isLeaf_valid_leaf(self):
     output = isLeaf(TREELIB, TREELIB_VALID_LEAF)
     assert output