def test_nonnull_overrides_orelse(self):
with pytest.raises(NullValueError):
NullNode().nonnull().orelse(3).val()
def test_dump(self):
assert isinstance(NullNode().dump(x=Q + 3), Null)
def test_find_all(self):
assert isinstance(NullNode().find_all('a'), NullCollection)
def test_select(self):
assert isinstance(NullNode().select('a'), NullCollection)
def test_find_single_multi(self, method):
assert isinstance(getattr(NullNode(), method)('a'), NullCollection)
def test_find(self):
assert isinstance(NullNode().find('a'), NullNode)
def test_orelse_returns_other(self):
assert NullNode().orelse(3).val() == 3
def test_setitem(self):
node = NullNode()
node['a'] = 3
def test_collection_props(self, attr):
node = NullNode()
with pytest.raises(NullValueError):
getattr(node, attr).val()
def test_scalar_props(self, attr):
node = NullNode()
assert isinstance(getattr(node, attr), Null)
def test_val_raises(self):
with pytest.raises(NullValueError):
assert NullNode().val()
def test_len(self):
assert len(NullNode()) == 0
def test_str(self):
assert str(NullNode()) == "NullNode()"
def test_prettify(self):
assert NullNode().prettify() == "Null Node"
def test_find_single(self, method):
assert isinstance(getattr(NullNode(), method)('a'), NullNode)
def test_isnull(self):
assert NullNode().isnull()
def test_hash(self):
# hashing uses the type
assert hash(Null()) == hash(Null())
assert hash(Null()) != hash(NullNode())
