def test_multiple_validators(self):
"""
If a list is passed as a validator, all of its items are treated as one
and must pass.
"""
def v1(_, __, value):
if value == 23:
raise TypeError("omg")
def v2(_, __, value):
if value == 42:
raise ValueError("omg")
C = make_class("C", {"x": attr.ib(validator=[v1, v2])})
validate(C(1))
with pytest.raises(TypeError) as e:
C(23)
assert "omg" == e.value.args[0]
with pytest.raises(ValueError) as e:
C(42)
assert "omg" == e.value.args[0]
def test_multiple_validators(self):
"""
If a list is passed as a validator, all of its items are treated as one
and must pass.
"""
def v1(_, __, value):
if value == 23:
raise TypeError("omg")
def v2(_, __, value):
if value == 42:
raise ValueError("omg")
C = make_class("C", {"x": attr.ib(validator=[v1, v2])})
validate(C(1))
with pytest.raises(TypeError) as e:
C(23)
assert "omg" == e.value.args[0]
with pytest.raises(ValueError) as e:
C(42)
assert "omg" == e.value.args[0]
def test_success(self):
"""
If the validator suceeds, nothing gets raised.
"""
C = make_class("C", {"x": attr(validator=lambda *a: None),
"y": attr()})
validate(C(1, 2))
def test_propagates(self):
"""
The exception of the validator is handed through.
"""
def raiser(_, __, value):
if value == 42:
raise FloatingPointError
C = make_class("C", {"x": attr.ib(validator=raiser)})
i = C(1)
i.x = 42
with pytest.raises(FloatingPointError):
validate(i)
def test_propagates(self):
"""
The exception of the validator is handed through.
"""
def raiser(_, __, value):
if value == 42:
raise FloatingPointError
C = make_class("C", {"x": attr.ib(validator=raiser)})
i = C(1)
i.x = 42
with pytest.raises(FloatingPointError):
validate(i)
def test_run_validators(self):
"""
Setting `_run_validators` to False prevents validators from running.
"""
_config._run_validators = False
obj = object()
def raiser(_, __, ___):
raise Exception(obj)
C = make_class("C", {"x": attr.ib(validator=raiser)})
c = C(1)
validate(c)
assert 1 == c.x
_config._run_validators = True
with pytest.raises(Exception):
validate(c)
with pytest.raises(Exception) as e:
C(1)
assert (obj,) == e.value.args
def test_run_validators(self):
"""
Setting `_run_validators` to False prevents validators from running.
"""
_config._run_validators = False
obj = object()
def raiser(_, __, ___):
raise Exception(obj)
C = make_class("C", {"x": attr.ib(validator=raiser)})
c = C(1)
validate(c)
assert 1 == c.x
_config._run_validators = True
with pytest.raises(Exception):
validate(c)
with pytest.raises(Exception) as e:
C(1)
assert (obj,) == e.value.args
