def test_tronfig_failure(self):
self.start_with_config(SINGLE_ECHO_CONFIG)
bad_config = 'this is not valid: yaml: is it?'
def test_return_code(exc):
assert_equal(exc.returncode, 1)
assert_raises_such_that(CalledProcessError, test_return_code,
self.sandbox.tronfig, bad_config)
def test_tronfig_failure(self):
self.start_with_config(SINGLE_ECHO_CONFIG)
bad_config = 'this is not valid: yaml: is it?'
def test_return_code(exc):
assert_equal(exc.returncode, 1)
assert_raises_such_that(CalledProcessError, test_return_code,
self.sandbox.tronfig, bad_config)
def test_callable_is_called_with_all_arguments(self):
"""Tests that the callable form works properly, with all arguments
passed through."""
message_is_foo = lambda e: assert_equal(str(e), 'foo')
class GoodArguments(Exception): pass
arg1, arg2, kwarg = object(), object(), object()
def check_arguments(*args, **kwargs):
assert_equal((arg1, arg2), args)
assert_equal({'kwarg': kwarg}, kwargs)
raise GoodArguments('foo')
assertions.assert_raises_such_that(GoodArguments, message_is_foo, check_arguments, arg1, arg2, kwarg=kwarg)
def test_fails_when_exception_test_fails(self):
"""Tests that when an exception of the right type that fails the
passed in exception test is raised, the assertion fails."""
has_two_args = lambda e: assertions.assert_length(e.args, 2)
with assertions.assert_raises(AssertionError):
with assertions.assert_raises_such_that(Exception, has_two_args):
raise Exception("only one argument")
def test_passes_when_correct_exception_is_raised(self):
"""Tests that when an exception of the right type that passes the
exception test is raised, the assertion passes."""
def has_two_args(e):
assertions.assert_length(e.args, 2)
with assertions.assert_raises_such_that(Exception, has_two_args):
raise Exception("first", "second")
def test_fails_when_exception_test_fails(self):
"""Tests that when an exception of the right type that fails the
passed in exception test is raised, the assertion fails."""
has_two_args = lambda e: assertions.assert_length(e.args, 2)
with assertions.assert_raises(AssertionError):
with assertions.assert_raises_such_that(Exception, has_two_args):
raise Exception("only one argument")
def test_fails_when_no_exception_is_raised(self):
"""Tests that the assertion fails when no exception is raised."""
def exists(e):
return True
with assertions.assert_raises(AssertionError):
with assertions.assert_raises_such_that(Exception, exists):
pass
def test_passes_when_correct_exception_is_raised(self):
"""Tests that when an exception of the right type that passes the
exception test is raised, the assertion passes."""
def has_two_args(e):
assertions.assert_length(e.args, 2)
with assertions.assert_raises_such_that(Exception, has_two_args):
raise Exception("first", "second")
def test_fails_when_no_exception_is_raised(self):
"""Tests that the assertion fails when no exception is raised."""
def exists(e):
return True
with assertions.assert_raises(AssertionError):
with assertions.assert_raises_such_that(Exception, exists):
pass
def test_fails_when_wrong_exception_is_raised(self):
"""Tests that when an unexpected exception is raised, that it is
passed through and the assertion fails."""
exists = lambda e: True
# note: in assert_raises*, if the exception raised is not of the
# expected type, that exception just falls through
with assertions.assert_raises(Exception):
with assertions.assert_raises_such_that(AssertionError, exists):
raise Exception("the wrong exception")
def test_fails_when_wrong_exception_is_raised(self):
"""Tests that when an unexpected exception is raised, that it is
passed through and the assertion fails."""
exists = lambda e: True
# note: in assert_raises*, if the exception raised is not of the
# expected type, that exception just falls through
with assertions.assert_raises(Exception):
with assertions.assert_raises_such_that(AssertionError, exists):
raise Exception("the wrong exception")
def test_max_elements_to_print_eq_0_means_no_sample_message(self):
"""Tests that when max_elements_to_print is 0, there is no sample in the error message."""
iterable = [1, 2, 3]
expected_message = "iterable %s was unexpectedly non-empty." % iterable
def message_has_no_sample(exception):
assertions.assert_equal(str(exception), expected_message)
with assertions.assert_raises_such_that(
AssertionError, message_has_no_sample):
assertions.assert_empty(iterable, max_elements_to_print=0)
def test_max_elements_to_print_eq_0_means_no_sample_message(self):
"""Tests that when max_elements_to_print is 0, there is no sample in the error message."""
iterable = [1, 2, 3]
expected_message = "iterable %s was unexpectedly non-empty." % iterable
def message_has_no_sample(exception):
assertions.assert_equal(str(exception), expected_message)
with assertions.assert_raises_such_that(AssertionError,
message_has_no_sample):
assertions.assert_empty(iterable, max_elements_to_print=0)
def test_callable_is_called_with_all_arguments(self):
"""Tests that the callable form works properly, with all arguments
passed through."""
message_is_foo = lambda e: assert_equal(str(e), 'foo')
class GoodArguments(Exception):
pass
arg1, arg2, kwarg = object(), object(), object()
def check_arguments(*args, **kwargs):
assert_equal((arg1, arg2), args)
assert_equal({'kwarg': kwarg}, kwargs)
raise GoodArguments('foo')
assertions.assert_raises_such_that(GoodArguments,
message_is_foo,
check_arguments,
arg1,
arg2,
kwarg=kwarg)
def test_max_elements_to_print_eq_len_means_whole_iterable_sample_message(self):
"""
Tests that when max_elements_to_print is equal to the length of
the whole iterable, the whole iterable is printed.
"""
elements = [1, 2, 3, 4, 5]
iterable = (i for i in elements)
expected_message = "iterable %s was unexpectedly non-empty. elements: %s" \
% (iterable, elements)
def message_has_whole_iterable_sample(exception):
assertions.assert_equal(str(exception), expected_message)
with assertions.assert_raises_such_that(
AssertionError, message_has_whole_iterable_sample):
assertions.assert_empty(iterable, max_elements_to_print=len(elements))
def test_max_elements_to_print_lt_len_means_partial_iterable_sample_message(self):
"""
Tests that when max_elements_to_print is less than the length of the
whole iterable, the first max_elements_to_print elements are printed.
"""
elements = [1, 2, 3, 4, 5]
iterable = (i for i in elements)
max_elements_to_print = len(elements) - 1
expected_message = "iterable %s was unexpectedly non-empty. first %i elements: %s" \
% (iterable, max_elements_to_print, elements[:max_elements_to_print])
def message_has_whole_iterable_sample(exception):
assertions.assert_equal(str(exception), expected_message)
with assertions.assert_raises_such_that(
AssertionError, message_has_whole_iterable_sample):
assertions.assert_empty(iterable, max_elements_to_print=max_elements_to_print)
def test_max_elements_to_print_eq_len_means_whole_iterable_sample_message(
self):
"""
Tests that when max_elements_to_print is equal to the length of
the whole iterable, the whole iterable is printed.
"""
elements = [1, 2, 3, 4, 5]
iterable = (i for i in elements)
expected_message = "iterable %s was unexpectedly non-empty. elements: %s" \
% (iterable, elements)
def message_has_whole_iterable_sample(exception):
assertions.assert_equal(str(exception), expected_message)
with assertions.assert_raises_such_that(
AssertionError, message_has_whole_iterable_sample):
assertions.assert_empty(iterable,
max_elements_to_print=len(elements))
def test_max_elements_to_print_lt_len_means_partial_iterable_sample_message(
self):
"""
Tests that when max_elements_to_print is less than the length of the
whole iterable, the first max_elements_to_print elements are printed.
"""
elements = [1, 2, 3, 4, 5]
iterable = (i for i in elements)
max_elements_to_print = len(elements) - 1
expected_message = "iterable %s was unexpectedly non-empty. first %i elements: %s" \
% (iterable, max_elements_to_print, elements[:max_elements_to_print])
def message_has_whole_iterable_sample(exception):
assertions.assert_equal(str(exception), expected_message)
with assertions.assert_raises_such_that(
AssertionError, message_has_whole_iterable_sample):
assertions.assert_empty(
iterable, max_elements_to_print=max_elements_to_print)