def test_return_wrong_type_on_non_dict(self):
cn = sut.Dict(key=[sut.InstanceOf(bool)])
actual = cn.check("test")
assert Error("wrong-type") == actual
def test_return_empty_list_on_success(self):
cn = sut.Dict(key=[sut.InstanceOf(bool)])
actual = cn.check({"key": True})
assert not actual
def test_trivial_result_when_input_of_correct_type(self, inp, ty):
actual = sut.InstanceOf(ty).check(inp)
assert not actual
def test_run_all_constraints_for_a_single_field(self):
cn = sut.Dict(key=[sut.InstanceOf(bool), sut.InstanceOf(str)])
actual = cn.check({"key": 1})
assert Error({"key": Error("wrong-type", "wrong-type")}) == actual
def test_non_trivial_result_when_input_of_wrong_type(self, inp, ty):
actual = sut.InstanceOf(ty).check(inp)
assert Error('wrong-type') == actual