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192 lines
6.2 KiB
Python
192 lines
6.2 KiB
Python
# Created By: Virgil Dupras
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# Created On: 2010-11-14
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# Copyright 2015 Hardcoded Software (http://www.hardcoded.net)
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#
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# This software is licensed under the "GPLv3" License as described in the "LICENSE" file,
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# which should be included with this package. The terms are also available at
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# http://www.gnu.org/licenses/gpl-3.0.html
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import pytest
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def eq_(a, b, msg=None):
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__tracebackhide__ = True
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assert a == b, msg or "{!r} != {!r}".format(a, b)
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def callcounter():
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def f(*args, **kwargs):
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f.callcount += 1
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f.callcount = 0
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return f
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class CallLogger:
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"""This is a dummy object that logs all calls made to it.
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It is used to simulate the GUI layer.
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"""
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def __init__(self):
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self.calls = []
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def __getattr__(self, func_name):
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def func(*args, **kw):
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self.calls.append(func_name)
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return func
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def clear_calls(self):
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del self.calls[:]
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def check_gui_calls(self, expected, verify_order=False):
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"""Checks that the expected calls have been made to 'self', then clears the log.
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`expected` is an iterable of strings representing method names.
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If `verify_order` is True, the order of the calls matters.
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"""
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__tracebackhide__ = True
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if verify_order:
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eq_(self.calls, expected)
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else:
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eq_(set(self.calls), set(expected))
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self.clear_calls()
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def check_gui_calls_partial(self, expected=None, not_expected=None, verify_order=False):
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"""Checks that the expected calls have been made to 'self', then clears the log.
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`expected` is an iterable of strings representing method names. Order doesn't matter.
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Moreover, if calls have been made that are not in expected, no failure occur.
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`not_expected` can be used for a more explicit check (rather than calling `check_gui_calls`
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with an empty `expected`) to assert that calls have *not* been made.
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"""
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__tracebackhide__ = True
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if expected is not None:
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not_called = set(expected) - set(self.calls)
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assert not not_called, f"These calls haven't been made: {not_called}"
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if verify_order:
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max_index = 0
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for call in expected:
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index = self.calls.index(call)
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if index < max_index:
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raise AssertionError(f"The call {call} hasn't been made in the correct order")
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max_index = index
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if not_expected is not None:
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called = set(not_expected) & set(self.calls)
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assert not called, f"These calls shouldn't have been made: {called}"
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self.clear_calls()
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class TestApp:
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def __init__(self):
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self._call_loggers = []
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def clear_gui_calls(self):
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for logger in self._call_loggers:
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logger.clear_calls()
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def make_logger(self, logger=None):
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if logger is None:
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logger = CallLogger()
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self._call_loggers.append(logger)
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return logger
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def make_gui(self, name, class_, view=None, parent=None, holder=None):
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if view is None:
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view = self.make_logger()
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if parent is None:
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# The attribute "default_parent" has to be set for this to work correctly
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parent = self.default_parent
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if holder is None:
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holder = self
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setattr(holder, f"{name}_gui", view)
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gui = class_(parent)
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gui.view = view
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setattr(holder, name, gui)
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return gui
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# To use @with_app, you have to import app in your conftest.py file.
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def with_app(setupfunc):
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def decorator(func):
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func.setupfunc = setupfunc
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return func
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return decorator
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@pytest.fixture
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def app(request):
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setupfunc = request.function.setupfunc
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if hasattr(setupfunc, "__code__"):
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argnames = setupfunc.__code__.co_varnames[: setupfunc.__code__.co_argcount]
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def getarg(name):
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if name == "self":
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return request.function.__self__
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else:
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return request.getfixturevalue(name)
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args = [getarg(argname) for argname in argnames]
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else:
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args = []
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app = setupfunc(*args)
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return app
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def _unify_args(func, args, kwargs, args_to_ignore=None):
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"""Unify args and kwargs in the same dictionary.
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The result is kwargs with args added to it. func.func_code.co_varnames is used to determine
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under what key each elements of arg will be mapped in kwargs.
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if you want some arguments not to be in the results, supply a list of arg names in
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args_to_ignore.
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if f is a function that takes *args, func_code.co_varnames is empty, so args will be put
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under 'args' in kwargs.
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def foo(bar, baz)
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_unifyArgs(foo, (42,), {'baz': 23}) --> {'bar': 42, 'baz': 23}
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_unifyArgs(foo, (42,), {'baz': 23}, ['bar']) --> {'baz': 23}
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"""
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result = kwargs.copy()
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if hasattr(func, "__code__"): # built-in functions don't have func_code
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args = list(args)
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if getattr(func, "__self__", None) is not None: # bound method, we have to add self to args list
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args = [func.__self__] + args
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defaults = list(func.__defaults__) if func.__defaults__ is not None else []
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arg_count = func.__code__.co_argcount
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arg_names = list(func.__code__.co_varnames)
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if len(args) < arg_count: # We have default values
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required_arg_count = arg_count - len(args)
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args = args + defaults[-required_arg_count:]
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for arg_name, arg in zip(arg_names, args):
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# setdefault is used because if the arg is already in kwargs, we don't want to use default values
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result.setdefault(arg_name, arg)
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else:
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# 'func' has a *args argument
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result["args"] = args
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if args_to_ignore:
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for kw in args_to_ignore:
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del result[kw]
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return result
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def log_calls(func):
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"""Logs all func calls' arguments under func.calls.
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func.calls is a list of _unify_args() result (dict).
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Mostly used for unit testing.
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"""
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def wrapper(*args, **kwargs):
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unified_args = _unify_args(func, args, kwargs)
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wrapper.calls.append(unified_args)
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return func(*args, **kwargs)
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wrapper.calls = []
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return wrapper
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