def test_returns_sentinel_when_exception_is_raised(self):
exception_class = IOError
def failing():
raise exception_class()
assert_equal(sentinel,
exception_guard(failing, exception_class, sentinel)())
def test_returns_sentinel_when_exception_is_raised(self):
exception_class = IOError
def failing():
raise exception_class()
assert_equal(sentinel,
exception_guard(failing, exception_class, sentinel)())
def test_does_not_catch_wider_exceptions(self):
parent_exception = Exception
child_exception = IOError
assert_true(issubclass(child_exception, parent_exception))
def failing():
raise parent_exception()
guarded_function = exception_guard(failing, child_exception)
assert_raises(parent_exception, guarded_function)
def test_does_not_catch_wider_exceptions(self):
parent_exception = Exception
child_exception = IOError
assert_true(issubclass(child_exception, parent_exception))
def failing():
raise parent_exception()
guarded_function = exception_guard(failing, child_exception)
assert_raises(parent_exception, guarded_function)
def test_passes_arguments(self):
assert_equal(sentinel, exception_guard(lambda x: x)(sentinel))
def test_calls_function_when_called(self):
f = Mock()
f.return_value = sentinel
assert_equal(sentinel, exception_guard(f)())
f.assert_called_once_with()
def test_returns_a_wrapper(self):
wrapper = exception_guard(lambda: None)
assert_is_instance(wrapper, FunctionType)
def test_passes_arguments(self):
assert_equal(sentinel, exception_guard(lambda x: x)(sentinel))
def test_calls_function_when_called(self):
f = Mock()
f.return_value = sentinel
assert_equal(sentinel, exception_guard(f)())
f.assert_called_once_with()
def test_returns_a_wrapper(self):
wrapper = exception_guard(lambda: None)
assert_is_instance(wrapper, FunctionType)
