def test_handles_exceptions_containing_user_objects(self):
def function():
class Something(object):
pass
def returning_exception_with_something():
return OverflowError(Something())
returning_exception_with_something()
callables = inspect_returning_callables(function)
function = findfirst(is_function, callables)
user_object = findfirst(is_user_object, callables)
call = assert_one_element_and_return(function.calls)
user_object_in_exc = assert_one_element_and_return(call.output.args)
assert user_object is user_object_in_exc
def test_handles_exceptions_containing_user_objects(self):
def function():
class Something(object):
pass
def returning_exception_with_something():
return OverflowError(Something())
returning_exception_with_something()
callables = inspect_returning_callables(function)
function = findfirst(is_function, callables)
user_object = findfirst(is_user_object, callables)
call = assert_one_element_and_return(function.calls)
user_object_in_exc = assert_one_element_and_return(call.output.args)
assert user_object is user_object_in_exc
def test_handles_functions_which_raise_user_defined_exceptions(self):
def function_raising_a_user_defined_exception():
class UserDefinedException(Exception):
pass
def function(x):
raise UserDefinedException()
function(42)
callables = inspect_returning_callables(function_raising_a_user_defined_exception)
function = findfirst(is_function, callables)
assert_call_with_exception({'x': 42}, 'UserDefinedException', function.calls[0])
def test_handles_passing_user_objects_around(self):
def fun():
class Something(object):
pass
def compare(x, y):
return x is y
obj = Something()
compare(obj, obj)
callables = inspect_returning_callables(fun)
assert_length(callables, 2)
user_object = findfirst(is_user_object, callables)
function = findfirst(is_function, callables)
call = assert_one_element_and_return(function.calls)
assert_instance(call.output, ImmutableObject)
assert_equal(ImmutableObject(True), call.output)
assert call.input['x'] is call.input['y'] is user_object
def test_handles_functions_which_raise_user_defined_exceptions(self):
def function_raising_a_user_defined_exception():
class UserDefinedException(Exception):
pass
def function(x):
raise UserDefinedException()
function(42)
callables = inspect_returning_callables(function_raising_a_user_defined_exception)
function = findfirst(is_function, callables)
assert_call_with_exception({'x': 42}, 'UserDefinedException', function.calls[0])
def test_handles_passing_user_objects_around(self):
def fun():
class Something(object):
pass
def compare(x, y):
return x is y
obj = Something()
compare(obj, obj)
callables = inspect_returning_callables(fun)
assert_length(callables, 2)
user_object = findfirst(is_user_object, callables)
function = findfirst(is_function, callables)
call = assert_one_element_and_return(function.calls)
assert_instance(call.output, ImmutableObject)
assert_equal(ImmutableObject(True), call.output)
assert call.input['x'] is call.input['y'] is user_object
def get_init_call(self):
"""Return a call to __init__ or None if it wasn't called.
"""
return findfirst(lambda call: call.definition.name == '__init__',
self.calls)
def find_first_with_name(name, collection):
return findfirst(lambda f: f.name == name, collection)
def get_init_call(self):
"""Return a call to __init__ or None if it wasn't called.
"""
return findfirst(lambda call: call.definition.name == '__init__', self.calls)
def find_first_with_name(name, collection):
return findfirst(lambda f: f.name == name, collection)