129 lines
4.1 KiB
Python
129 lines
4.1 KiB
Python
import py
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class _pytestPlugin:
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def pytest_funcarg___pytest(self, pyfuncitem):
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return PytestArg(pyfuncitem)
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class PytestArg:
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def __init__(self, pyfuncitem):
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self.pyfuncitem = pyfuncitem
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def getcallrecorder(self, apiclass, pyplugins=None):
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if pyplugins is None:
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pyplugins = self.pyfuncitem.config.pytestplugins.pyplugins
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callrecorder = CallRecorder(pyplugins)
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callrecorder.start_recording(apiclass)
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self.pyfuncitem.addfinalizer(callrecorder.finalize)
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return callrecorder
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class ParsedCall:
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def __init__(self, name, locals):
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assert '_name' not in locals
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self.__dict__.update(locals)
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self.__dict__.pop('self')
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self._name = name
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def __repr__(self):
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d = self.__dict__.copy()
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del d['_name']
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return "<ParsedCall %r(**%r)>" %(self._name, d)
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class CallRecorder:
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def __init__(self, pyplugins):
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self._pyplugins = pyplugins
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self.calls = []
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self._recorders = {}
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def start_recording(self, apiclass):
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assert apiclass not in self._recorders
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class RecordCalls:
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_recorder = self
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for name, method in vars(apiclass).items():
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if name[0] != "_":
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setattr(RecordCalls, name, self._getcallparser(method))
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recorder = RecordCalls()
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self._recorders[apiclass] = recorder
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self._pyplugins.register(recorder)
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def finalize(self):
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for recorder in self._recorders.values():
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self._pyplugins.unregister(recorder)
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def recordsmethod(self, name):
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for apiclass in self._recorders:
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if hasattr(apiclass, name):
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return True
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def _getcallparser(self, method):
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name = method.__name__
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args, varargs, varkw, default = py.std.inspect.getargspec(method)
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assert args[0] == "self"
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fspec = py.std.inspect.formatargspec(args, varargs, varkw, default)
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# we use exec because we want to have early type
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# errors on wrong input arguments, using
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# *args/**kwargs delays this and gives errors
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# elsewhere
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exec py.code.compile("""
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def %(name)s%(fspec)s:
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self._recorder.calls.append(
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ParsedCall(%(name)r, locals()))
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""" % locals())
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return locals()[name]
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def popcall(self, name):
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for i, call in py.builtin.enumerate(self.calls):
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if call._name == name:
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del self.calls[i]
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return call
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raise ValueError("could not find call %r in %r" %(name, self.calls))
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def getcalls(self, names):
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if isinstance(names, str):
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names = names.split()
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for name in names:
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for cls in self._recorders:
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if name in vars(cls):
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break
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else:
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raise ValueError("callname %r not found in %r" %(
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name, self._recorders.keys()))
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l = []
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for call in self.calls:
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if call._name in names:
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l.append(call)
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return l
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def test_generic(plugintester):
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plugintester.apicheck(_pytestPlugin)
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def test_callrecorder_basic():
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pyplugins = py._com.PyPlugins()
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rec = CallRecorder(pyplugins)
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class ApiClass:
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def xyz(self, arg):
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pass
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rec.start_recording(ApiClass)
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pyplugins.call_each("xyz", 123)
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call = rec.popcall("xyz")
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assert call.arg == 123
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assert call._name == "xyz"
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py.test.raises(ValueError, "rec.popcall('abc')")
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def test_functional(testdir, linecomp):
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sorter = testdir.inline_runsource("""
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import py
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pytest_plugins="_pytest"
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def test_func(_pytest):
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class ApiClass:
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def xyz(self, arg): pass
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rec = _pytest.getcallrecorder(ApiClass)
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class Plugin:
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def xyz(self, arg):
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return arg + 1
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rec._pyplugins.register(Plugin())
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res = rec._pyplugins.call_firstresult("xyz", 41)
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assert res == 42
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""")
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sorter.assertoutcome(passed=1)
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