How to use assert_raises_such_that method in Testify
Best Python code snippet using Testify_python
assertions_test.py
Source:assertions_test.py 
...393 """Tests that the assertion fails when no exception is raised."""394 def exists(e):395 return True396 with assertions.assert_raises(AssertionError):397 with assertions.assert_raises_such_that(Exception, exists):398 pass399 def test_fails_when_wrong_exception_is_raised(self):400 """Tests that when an unexpected exception is raised, that it is401 passed through and the assertion fails."""402 def exists(e):403 return True404 # note: in assert_raises*, if the exception raised is not of the405 # expected type, that exception just falls through406 with assertions.assert_raises(Exception):407 with assertions.assert_raises_such_that(AssertionError, exists):408 raise Exception("the wrong exception")409 def test_fails_when_exception_test_fails(self):410 """Tests that when an exception of the right type that fails the411 passed in exception test is raised, the assertion fails."""412 def has_two_args(e):413 assertions.assert_length(e.args, 2)414 with assertions.assert_raises(AssertionError):415 with assertions.assert_raises_such_that(Exception, has_two_args):416 raise Exception("only one argument")417 def test_passes_when_correct_exception_is_raised(self):418 """Tests that when an exception of the right type that passes the419 exception test is raised, the assertion passes."""420 def has_two_args(e):421 assertions.assert_length(e.args, 2)422 with assertions.assert_raises_such_that(Exception, has_two_args):423 raise Exception("first", "second")424 def test_callable_is_called_with_all_arguments(self):425 """Tests that the callable form works properly, with all arguments426 passed through."""427 def message_is_foo(e):428 assert_equal(str(e), 'foo')429 class GoodArguments(Exception):430 pass431 arg1, arg2, kwarg = object(), object(), object()432 def check_arguments(*args, **kwargs):433 assert_equal((arg1, arg2), args)434 assert_equal({'kwarg': kwarg}, kwargs)435 raise GoodArguments('foo')436 assertions.assert_raises_such_that(GoodArguments, message_is_foo, check_arguments, arg1, arg2, kwarg=kwarg)437class AssertRaisesExactlyTestCase(TestCase):438 class MyException(ValueError):439 pass440 def test_passes_when_correct_exception_is_raised(self):441 with assertions.assert_raises_exactly(self.MyException, "first", "second"):442 raise self.MyException("first", "second")443 def test_fails_with_wrong_value(self):444 with assertions.assert_raises(AssertionError):445 with assertions.assert_raises_exactly(self.MyException, "first", "second"):446 raise self.MyException("red", "blue")447 def test_fails_with_different_class(self):448 class SpecialException(self.MyException):449 pass450 with assertions.assert_raises(AssertionError):451 with assertions.assert_raises_exactly(self.MyException, "first", "second"):452 raise SpecialException("first", "second")453 def test_fails_with_vague_class(self):454 with assertions.assert_raises(AssertionError):455 with assertions.assert_raises_exactly(Exception, "first", "second"):456 raise self.MyException("first", "second")457 def test_unexpected_exception_passes_through(self):458 class DifferentException(Exception):459 pass460 with assertions.assert_raises(DifferentException):461 with assertions.assert_raises_exactly(self.MyException, "first", "second"):462 raise DifferentException("first", "second")463class AssertRaisesAndContainsTestCase(TestCase):464 def test_fails_when_exception_is_not_raised(self):465 def raises_nothing():466 pass467 try:468 assertions.assert_raises_and_contains(ValueError, 'abc', raises_nothing)469 except AssertionError:470 pass471 else:472 assert_not_reached('AssertionError should have been raised')473 def test_fails_when_wrong_exception_is_raised(self):474 def raises_value_error():475 raise ValueError476 try:477 assertions.assert_raises_and_contains(MyException, 'abc', raises_value_error)478 except ValueError:479 pass480 else:481 assert_not_reached('ValueError should have been raised')482 def test_callable_is_called_with_all_arguments(self):483 class GoodArguments(Exception):484 pass485 arg1, arg2, kwarg = object(), object(), object()486 def check_arguments(*args, **kwargs):487 assert_equal((arg1, arg2), args)488 assert_equal({'kwarg': kwarg}, kwargs)489 raise GoodArguments('abc')490 assertions.assert_raises_and_contains(GoodArguments, 'abc', check_arguments, arg1, arg2, kwarg=kwarg)491 def test_fails_when_exception_does_not_contain_string(self):492 def raises_value_error():493 raise ValueError('abc')494 try:495 assertions.assert_raises_and_contains(ValueError, 'xyz', raises_value_error)496 except AssertionError:497 pass498 else:499 assert_not_reached('AssertionError should have been raised')500 def test_passes_when_exception_contains_string_with_matching_case(self):501 def raises_value_error():502 raise ValueError('abc')503 assertions.assert_raises_and_contains(ValueError, 'abc', raises_value_error)504 def test_passes_when_exception_contains_string_with_non_matching_case(self):505 def raises_value_error():506 raise ValueError('abc')507 assertions.assert_raises_and_contains(ValueError, 'ABC', raises_value_error)508 def test_passes_when_exception_contains_multiple_strings(self):509 def raises_value_error():510 raise ValueError('abc xyz')511 assertions.assert_raises_and_contains(ValueError, ['ABC', 'XYZ'], raises_value_error)512 def test_fails_when_exception_does_not_contains_all_strings(self):513 def raises_value_error():514 raise ValueError('abc xyz')515 try:516 assertions.assert_raises_and_contains(ValueError, ['ABC', '123'], raises_value_error)517 except AssertionError:518 pass519 else:520 assert_not_reached('AssertionError should have been raised')521class AssertDictSubsetTestCase(TestCase):522 def test_passes_with_subset(self):523 superset = {'one': 1, 'two': 2, 'three': 3}524 subset = {'one': 1}525 assert_dict_subset(subset, superset)526 def test_fails_with_wrong_key(self):527 superset = {'one': 1, 'two': 2, 'three': 3}528 subset = {'four': 4}529 assertions.assert_raises(AssertionError, assert_dict_subset, subset, superset)530 def test_fails_with_wrong_value(self):531 superset = {'one': 1, 'two': 2, 'three': 3}532 subset = {'one': 2}533 assertions.assert_raises(AssertionError, assert_dict_subset, superset, subset)534 def test_message_on_fail(self):535 superset = {'one': 1, 'two': 2, 'three': 3}536 subset = {'one': 2, 'two': 2}537 expected = "expected [subset has:{'one': 2}, superset has:{'one': 1}]"538 try:539 assert_dict_subset(subset, superset)540 except AssertionError as e:541 assert_equal(expected, e.args[0])542 else:543 assert_not_reached('AssertionError should have been raised')544class AssertEmptyTestCase(TestCase):545 def test_passes_on_empty_tuple(self):546 """Test that assert_empty passes on an empty tuple."""547 assertions.assert_empty(())548 def test_passes_on_empty_list(self):549 """Test that assert_empty passes on an empty list."""550 assertions.assert_empty([])551 def test_passes_on_unyielding_generator(self):552 """Test that assert_empty passes on an 'empty' generator."""553 def yield_nothing():554 if False:555 yield 0556 assertions.assert_empty(yield_nothing())557 def test_fails_on_nonempty_tuple(self):558 """Test that assert_empty fails on a nonempty tuple."""559 with assertions.assert_raises(AssertionError):560 assertions.assert_empty((0,))561 def test_fails_on_nonempty_list(self):562 """Test that assert_empty fails on a nonempty list."""563 with assertions.assert_raises(AssertionError):564 assertions.assert_empty([0])565 def test_fails_on_infinite_generator(self):566 """Tests that assert_empty fails on an infinite generator."""567 def yes():568 while True:569 yield 'y'570 with assertions.assert_raises(AssertionError):571 assertions.assert_empty(yes())572 def test_max_elements_to_print_eq_0_means_no_sample_message(self):573 """Tests that when max_elements_to_print is 0, there is no sample in the error message."""574 iterable = [1, 2, 3]575 expected_message = "iterable %s was unexpectedly non-empty." % iterable576 def message_has_no_sample(exception):577 assertions.assert_equal(str(exception), expected_message)578 with assertions.assert_raises_such_that(579 AssertionError, message_has_no_sample):580 assertions.assert_empty(iterable, max_elements_to_print=0)581 def test_max_elements_to_print_gt_len_means_whole_iterable_sample_message(self):582 """583 Tests that when max_elements_to_print is greater than the length of584 the whole iterable, the whole iterable is printed.585 """586 elements = [1, 2, 3, 4, 5]587 iterable = (i for i in elements)588 expected_message = "iterable %s was unexpectedly non-empty. elements: %s" \589 % (iterable, elements)590 def message_has_whole_iterable_sample(exception):591 assertions.assert_equal(str(exception), expected_message)592 with assertions.assert_raises_such_that(593 AssertionError, message_has_whole_iterable_sample):594 assertions.assert_empty(iterable, max_elements_to_print=len(elements) + 1)595 def test_max_elements_to_print_eq_len_means_whole_iterable_sample_message(self):596 """597 Tests that when max_elements_to_print is equal to the length of598 the whole iterable, the whole iterable is printed.599 """600 elements = [1, 2, 3, 4, 5]601 iterable = (i for i in elements)602 expected_message = "iterable %s was unexpectedly non-empty. elements: %s" \603 % (iterable, elements)604 def message_has_whole_iterable_sample(exception):605 assertions.assert_equal(str(exception), expected_message)606 with assertions.assert_raises_such_that(607 AssertionError, message_has_whole_iterable_sample):608 assertions.assert_empty(iterable, max_elements_to_print=len(elements))609 def test_max_elements_to_print_lt_len_means_partial_iterable_sample_message(self):610 """611 Tests that when max_elements_to_print is less than the length of the612 whole iterable, the first max_elements_to_print elements are printed.613 """614 elements = [1, 2, 3, 4, 5]615 iterable = (i for i in elements)616 max_elements_to_print = len(elements) - 1617 expected_message = "iterable %s was unexpectedly non-empty. first %i elements: %s" \618 % (iterable, max_elements_to_print, elements[:max_elements_to_print])619 def message_has_whole_iterable_sample(exception):620 assertions.assert_equal(str(exception), expected_message)621 with assertions.assert_raises_such_that(622 AssertionError, message_has_whole_iterable_sample):623 assertions.assert_empty(iterable, max_elements_to_print=max_elements_to_print)624class AssertNotEmptyTestCase(TestCase):625 def test_fails_on_empty_tuple(self):626 with assertions.assert_raises(AssertionError):627 assertions.assert_not_empty(())628 def test_fails_on_empty_list(self):629 """Test that assert_not_empty fails on an empty list."""630 with assertions.assert_raises(AssertionError):631 assertions.assert_not_empty([])632 def test_fails_on_unyielding_generator(self):633 """Test that assert_not_empty fails on an 'empty' generator."""634 def yield_nothing():635 if False:...
test_stream.py
Source:test_stream.py
...210 assert_equal(s._partition_key({'ünîcødé_Ïå®tîtîøñ_keÂ¥_å®å®': 'ünîcødé_Ïå®tîtîøñ_âal_å®å®'}), u'ünîcødé_Ïå®tîtîøñ_âal_å®å®')211 def test_missing_ascii_partition_key(self):212 c = turtle.Turtle()213 s = stream.Stream(c, 'test stream', 'value')214 with assert_raises_such_that(KeyError, lambda ke: assert_equal(ke.args[0], 'value')):215 s._partition_key({'wrong_value': 'ascii_string'})216 def test_missing_unicode_partition_key(self):217 c = turtle.Turtle()218 s = stream.Stream(c, u'test_üñîçøâé_stream', u'ünîcødé_Ïå®tîtîøñ_keÂ¥_å®å®')219 #NOTE: We should test that, when partition key is missing from data, we return220 #a KeyError with the same unicode parition_key object that is a member of the Stream object221 with assert_raises_such_that(KeyError, lambda ke: assert_equal(ke.args[0], u'ünîcødé_Ïå®tîtîøñ_keÂ¥_å®å®')):222 s._partition_key({u'wrong_ünîcødé_Ïå®tîtîøñ_keÂ¥_å®å®': u'ünîcødé_Ïå®tîtîøñ_âal_å®å®'})223 with assert_raises_such_that(KeyError, lambda ke: assert_equal(ke.args[0], u'ünîcødé_Ïå®tîtîøñ_keÂ¥_å®å®')):224 s._partition_key({'wrong_ünîcødé_Ïå®tîtîøñ_keÂ¥_å®å®': 'ünîcødé_Ïå®tîtîøñ_âal_å®å®'})225 def test_missing_escaped_unicode_partition_key(self):226 c = turtle.Turtle()227 s = stream.Stream(c, 'test_üñîçøâé_stream', 'ünîcødé_Ïå®tîtîøñ_keÂ¥_å®å®')228 #NOTE: We should test that, when partition key is missing from data, we return229 #a KeyError with the same unicode parition_key object that is a member of the Stream object230 with assert_raises_such_that(KeyError, lambda ke: assert_equal(ke.args[0], u'ünîcødé_Ïå®tîtîøñ_keÂ¥_å®å®')):231 s._partition_key({u'wrong_ünîcødé_Ïå®tîtîøñ_keÂ¥_å®å®': u'ünîcødé_Ïå®tîtîøñ_âal_å®å®'})232 with assert_raises_such_that(KeyError, lambda ke: assert_equal(ke.args[0], u'ünîcødé_Ïå®tîtîøñ_keÂ¥_å®å®')):233 s._partition_key({'wrong_ünîcødé_Ïå®tîtîøñ_keÂ¥_å®å®': 'ünîcødé_Ïå®tîtîøñ_âal_å®å®'})234 def test_shards_ids(self):235 c = turtle.Turtle()236 def describe_stream(_):237 return {238 'StreamDescription': {239 'HasMoreShards': False,240 'Shards': [241 {'ShardId': '0001'}, {'ShardId': '0002'}242 ]243 }244 }245 c.describe_stream = describe_stream246 s = stream.Stream(c, 'test stream', 'value')...
common_test.py
Source:common_test.py
...4 class A(object): pass5 class B(A): pass6 class C(object): pass7 def test_issubclass_not_a_subclass(self):8 with T.assert_raises_such_that(9 AssertionError,10 lambda e:11 e.args == (12 'Expected %s to be a subclass of %s' % (13 self.C.__name__, self.A.__name__14 ),15 )16 ):17 assert_issubclass(self.C, self.A)18 def test_issubclass_actually_a_subclass(self):...
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