| import unittest | |
| from test.support import cpython_only | |
| try: | |
| import _testcapi | |
| except ImportError: | |
| _testcapi = None | |
| import struct | |
| import collections | |
| import itertools | |
| import gc | |
| import contextlib | |
| class FunctionCalls(unittest.TestCase): | |
| def test_kwargs_order(self): | |
| # bpo-34320: **kwargs should preserve order of passed OrderedDict | |
| od = collections.OrderedDict([('a', 1), ('b', 2)]) | |
| od.move_to_end('a') | |
| expected = list(od.items()) | |
| def fn(**kw): | |
| return kw | |
| res = fn(**od) | |
| self.assertIsInstance(res, dict) | |
| self.assertEqual(list(res.items()), expected) | |
| @cpython_only | |
| class CFunctionCallsErrorMessages(unittest.TestCase): | |
| def test_varargs0(self): | |
| msg = r"__contains__\(\) takes exactly one argument \(0 given\)" | |
| self.assertRaisesRegex(TypeError, msg, {}.__contains__) | |
| def test_varargs2(self): | |
| msg = r"__contains__\(\) takes exactly one argument \(2 given\)" | |
| self.assertRaisesRegex(TypeError, msg, {}.__contains__, 0, 1) | |
| def test_varargs3(self): | |
| msg = r"^from_bytes\(\) takes exactly 2 positional arguments \(3 given\)" | |
| self.assertRaisesRegex(TypeError, msg, int.from_bytes, b'a', 'little', False) | |
| def test_varargs1min(self): | |
| msg = r"get expected at least 1 argument, got 0" | |
| self.assertRaisesRegex(TypeError, msg, {}.get) | |
| msg = r"expected 1 argument, got 0" | |
| self.assertRaisesRegex(TypeError, msg, {}.__delattr__) | |
| def test_varargs2min(self): | |
| msg = r"getattr expected at least 2 arguments, got 0" | |
| self.assertRaisesRegex(TypeError, msg, getattr) | |
| def test_varargs1max(self): | |
| msg = r"input expected at most 1 argument, got 2" | |
| self.assertRaisesRegex(TypeError, msg, input, 1, 2) | |
| def test_varargs2max(self): | |
| msg = r"get expected at most 2 arguments, got 3" | |
| self.assertRaisesRegex(TypeError, msg, {}.get, 1, 2, 3) | |
| def test_varargs1_kw(self): | |
| msg = r"__contains__\(\) takes no keyword arguments" | |
| self.assertRaisesRegex(TypeError, msg, {}.__contains__, x=2) | |
| def test_varargs2_kw(self): | |
| msg = r"__contains__\(\) takes no keyword arguments" | |
| self.assertRaisesRegex(TypeError, msg, {}.__contains__, x=2, y=2) | |
| def test_varargs3_kw(self): | |
| msg = r"bool\(\) takes no keyword arguments" | |
| self.assertRaisesRegex(TypeError, msg, bool, x=2) | |
| def test_varargs4_kw(self): | |
| msg = r"^list[.]index\(\) takes no keyword arguments$" | |
| self.assertRaisesRegex(TypeError, msg, [].index, x=2) | |
| def test_varargs5_kw(self): | |
| msg = r"^hasattr\(\) takes no keyword arguments$" | |
| self.assertRaisesRegex(TypeError, msg, hasattr, x=2) | |
| def test_varargs6_kw(self): | |
| msg = r"^getattr\(\) takes no keyword arguments$" | |
| self.assertRaisesRegex(TypeError, msg, getattr, x=2) | |
| def test_varargs7_kw(self): | |
| msg = r"^next\(\) takes no keyword arguments$" | |
| self.assertRaisesRegex(TypeError, msg, next, x=2) | |
| def test_varargs8_kw(self): | |
| msg = r"^_struct[.]pack\(\) takes no keyword arguments$" | |
| self.assertRaisesRegex(TypeError, msg, struct.pack, x=2) | |
| def test_varargs9_kw(self): | |
| msg = r"^_struct[.]pack_into\(\) takes no keyword arguments$" | |
| self.assertRaisesRegex(TypeError, msg, struct.pack_into, x=2) | |
| def test_varargs10_kw(self): | |
| msg = r"^deque[.]index\(\) takes no keyword arguments$" | |
| self.assertRaisesRegex(TypeError, msg, collections.deque().index, x=2) | |
| def test_varargs11_kw(self): | |
| msg = r"^Struct[.]pack\(\) takes no keyword arguments$" | |
| self.assertRaisesRegex(TypeError, msg, struct.Struct.pack, struct.Struct(""), x=2) | |
| def test_varargs12_kw(self): | |
| msg = r"^staticmethod\(\) takes no keyword arguments$" | |
| self.assertRaisesRegex(TypeError, msg, staticmethod, func=id) | |
| def test_varargs13_kw(self): | |
| msg = r"^classmethod\(\) takes no keyword arguments$" | |
| self.assertRaisesRegex(TypeError, msg, classmethod, func=id) | |
| def test_varargs14_kw(self): | |
| msg = r"^product\(\) takes at most 1 keyword argument \(2 given\)$" | |
| self.assertRaisesRegex(TypeError, msg, | |
| itertools.product, 0, repeat=1, foo=2) | |
| def test_varargs15_kw(self): | |
| msg = r"^ImportError\(\) takes at most 2 keyword arguments \(3 given\)$" | |
| self.assertRaisesRegex(TypeError, msg, | |
| ImportError, 0, name=1, path=2, foo=3) | |
| def test_varargs16_kw(self): | |
| msg = r"^min\(\) takes at most 2 keyword arguments \(3 given\)$" | |
| self.assertRaisesRegex(TypeError, msg, | |
| min, 0, default=1, key=2, foo=3) | |
| def test_varargs17_kw(self): | |
| msg = r"^print\(\) takes at most 4 keyword arguments \(5 given\)$" | |
| self.assertRaisesRegex(TypeError, msg, | |
| print, 0, sep=1, end=2, file=3, flush=4, foo=5) | |
| def test_oldargs0_1(self): | |
| msg = r"keys\(\) takes no arguments \(1 given\)" | |
| self.assertRaisesRegex(TypeError, msg, {}.keys, 0) | |
| def test_oldargs0_2(self): | |
| msg = r"keys\(\) takes no arguments \(2 given\)" | |
| self.assertRaisesRegex(TypeError, msg, {}.keys, 0, 1) | |
| def test_oldargs0_1_kw(self): | |
| msg = r"keys\(\) takes no keyword arguments" | |
| self.assertRaisesRegex(TypeError, msg, {}.keys, x=2) | |
| def test_oldargs0_2_kw(self): | |
| msg = r"keys\(\) takes no keyword arguments" | |
| self.assertRaisesRegex(TypeError, msg, {}.keys, x=2, y=2) | |
| def test_oldargs1_0(self): | |
| msg = r"count\(\) takes exactly one argument \(0 given\)" | |
| self.assertRaisesRegex(TypeError, msg, [].count) | |
| def test_oldargs1_2(self): | |
| msg = r"count\(\) takes exactly one argument \(2 given\)" | |
| self.assertRaisesRegex(TypeError, msg, [].count, 1, 2) | |
| def test_oldargs1_0_kw(self): | |
| msg = r"count\(\) takes no keyword arguments" | |
| self.assertRaisesRegex(TypeError, msg, [].count, x=2) | |
| def test_oldargs1_1_kw(self): | |
| msg = r"count\(\) takes no keyword arguments" | |
| self.assertRaisesRegex(TypeError, msg, [].count, {}, x=2) | |
| def test_oldargs1_2_kw(self): | |
| msg = r"count\(\) takes no keyword arguments" | |
| self.assertRaisesRegex(TypeError, msg, [].count, x=2, y=2) | |
| class TestCallingConventions(unittest.TestCase): | |
| """Test calling using various C calling conventions (METH_*) from Python | |
| Subclasses test several kinds of functions (module-level, methods, | |
| class methods static methods) using these attributes: | |
| obj: the object that contains tested functions (as attributes) | |
| expected_self: expected "self" argument to the C function | |
| The base class tests module-level functions. | |
| """ | |
| def setUp(self): | |
| self.obj = self.expected_self = _testcapi | |
| def test_varargs(self): | |
| self.assertEqual( | |
| self.obj.meth_varargs(1, 2, 3), | |
| (self.expected_self, (1, 2, 3)), | |
| ) | |
| def test_varargs_ext(self): | |
| self.assertEqual( | |
| self.obj.meth_varargs(*(1, 2, 3)), | |
| (self.expected_self, (1, 2, 3)), | |
| ) | |
| def test_varargs_error_kw(self): | |
| msg = r"meth_varargs\(\) takes no keyword arguments" | |
| self.assertRaisesRegex( | |
| TypeError, msg, lambda: self.obj.meth_varargs(k=1), | |
| ) | |
| def test_varargs_keywords(self): | |
| self.assertEqual( | |
| self.obj.meth_varargs_keywords(1, 2, a=3, b=4), | |
| (self.expected_self, (1, 2), {'a': 3, 'b': 4}) | |
| ) | |
| def test_varargs_keywords_ext(self): | |
| self.assertEqual( | |
| self.obj.meth_varargs_keywords(*[1, 2], **{'a': 3, 'b': 4}), | |
| (self.expected_self, (1, 2), {'a': 3, 'b': 4}) | |
| ) | |
| def test_o(self): | |
| self.assertEqual(self.obj.meth_o(1), (self.expected_self, 1)) | |
| def test_o_ext(self): | |
| self.assertEqual(self.obj.meth_o(*[1]), (self.expected_self, 1)) | |
| def test_o_error_no_arg(self): | |
| msg = r"meth_o\(\) takes exactly one argument \(0 given\)" | |
| self.assertRaisesRegex(TypeError, msg, self.obj.meth_o) | |
| def test_o_error_two_args(self): | |
| msg = r"meth_o\(\) takes exactly one argument \(2 given\)" | |
| self.assertRaisesRegex( | |
| TypeError, msg, lambda: self.obj.meth_o(1, 2), | |
| ) | |
| def test_o_error_ext(self): | |
| msg = r"meth_o\(\) takes exactly one argument \(3 given\)" | |
| self.assertRaisesRegex( | |
| TypeError, msg, lambda: self.obj.meth_o(*(1, 2, 3)), | |
| ) | |
| def test_o_error_kw(self): | |
| msg = r"meth_o\(\) takes no keyword arguments" | |
| self.assertRaisesRegex( | |
| TypeError, msg, lambda: self.obj.meth_o(k=1), | |
| ) | |
| def test_o_error_arg_kw(self): | |
| msg = r"meth_o\(\) takes no keyword arguments" | |
| self.assertRaisesRegex( | |
| TypeError, msg, lambda: self.obj.meth_o(k=1), | |
| ) | |
| def test_noargs(self): | |
| self.assertEqual(self.obj.meth_noargs(), self.expected_self) | |
| def test_noargs_ext(self): | |
| self.assertEqual(self.obj.meth_noargs(*[]), self.expected_self) | |
| def test_noargs_error_arg(self): | |
| msg = r"meth_noargs\(\) takes no arguments \(1 given\)" | |
| self.assertRaisesRegex( | |
| TypeError, msg, lambda: self.obj.meth_noargs(1), | |
| ) | |
| def test_noargs_error_arg2(self): | |
| msg = r"meth_noargs\(\) takes no arguments \(2 given\)" | |
| self.assertRaisesRegex( | |
| TypeError, msg, lambda: self.obj.meth_noargs(1, 2), | |
| ) | |
| def test_noargs_error_ext(self): | |
| msg = r"meth_noargs\(\) takes no arguments \(3 given\)" | |
| self.assertRaisesRegex( | |
| TypeError, msg, lambda: self.obj.meth_noargs(*(1, 2, 3)), | |
| ) | |
| def test_noargs_error_kw(self): | |
| msg = r"meth_noargs\(\) takes no keyword arguments" | |
| self.assertRaisesRegex( | |
| TypeError, msg, lambda: self.obj.meth_noargs(k=1), | |
| ) | |
| def test_fastcall(self): | |
| self.assertEqual( | |
| self.obj.meth_fastcall(1, 2, 3), | |
| (self.expected_self, (1, 2, 3)), | |
| ) | |
| def test_fastcall_ext(self): | |
| self.assertEqual( | |
| self.obj.meth_fastcall(*(1, 2, 3)), | |
| (self.expected_self, (1, 2, 3)), | |
| ) | |
| def test_fastcall_error_kw(self): | |
| msg = r"meth_fastcall\(\) takes no keyword arguments" | |
| self.assertRaisesRegex( | |
| TypeError, msg, lambda: self.obj.meth_fastcall(k=1), | |
| ) | |
| def test_fastcall_keywords(self): | |
| self.assertEqual( | |
| self.obj.meth_fastcall_keywords(1, 2, a=3, b=4), | |
| (self.expected_self, (1, 2), {'a': 3, 'b': 4}) | |
| ) | |
| def test_fastcall_keywords_ext(self): | |
| self.assertEqual( | |
| self.obj.meth_fastcall_keywords(*(1, 2), **{'a': 3, 'b': 4}), | |
| (self.expected_self, (1, 2), {'a': 3, 'b': 4}) | |
| ) | |
| class TestCallingConventionsInstance(TestCallingConventions): | |
| """Test calling instance methods using various calling conventions""" | |
| def setUp(self): | |
| self.obj = self.expected_self = _testcapi.MethInstance() | |
| class TestCallingConventionsClass(TestCallingConventions): | |
| """Test calling class methods using various calling conventions""" | |
| def setUp(self): | |
| self.obj = self.expected_self = _testcapi.MethClass | |
| class TestCallingConventionsClassInstance(TestCallingConventions): | |
| """Test calling class methods on instance""" | |
| def setUp(self): | |
| self.obj = _testcapi.MethClass() | |
| self.expected_self = _testcapi.MethClass | |
| class TestCallingConventionsStatic(TestCallingConventions): | |
| """Test calling static methods using various calling conventions""" | |
| def setUp(self): | |
| self.obj = _testcapi.MethStatic() | |
| self.expected_self = None | |
| def pyfunc(arg1, arg2): | |
| return [arg1, arg2] | |
| def pyfunc_noarg(): | |
| return "noarg" | |
| class PythonClass: | |
| def method(self, arg1, arg2): | |
| return [arg1, arg2] | |
| def method_noarg(self): | |
| return "noarg" | |
| @classmethod | |
| def class_method(cls): | |
| return "classmethod" | |
| @staticmethod | |
| def static_method(): | |
| return "staticmethod" | |
| PYTHON_INSTANCE = PythonClass() | |
| NULL_OR_EMPTY = object() | |
| class FastCallTests(unittest.TestCase): | |
| """Test calling using various callables from C | |
| """ | |
| # Test calls with positional arguments | |
| CALLS_POSARGS = [ | |
| # (func, args: tuple, result) | |
| # Python function with 2 arguments | |
| (pyfunc, (1, 2), [1, 2]), | |
| # Python function without argument | |
| (pyfunc_noarg, (), "noarg"), | |
| # Python class methods | |
| (PythonClass.class_method, (), "classmethod"), | |
| (PythonClass.static_method, (), "staticmethod"), | |
| # Python instance methods | |
| (PYTHON_INSTANCE.method, (1, 2), [1, 2]), | |
| (PYTHON_INSTANCE.method_noarg, (), "noarg"), | |
| (PYTHON_INSTANCE.class_method, (), "classmethod"), | |
| (PYTHON_INSTANCE.static_method, (), "staticmethod"), | |
| # C callables are added later | |
| ] | |
| # Test calls with positional and keyword arguments | |
| CALLS_KWARGS = [ | |
| # (func, args: tuple, kwargs: dict, result) | |
| # Python function with 2 arguments | |
| (pyfunc, (1,), {'arg2': 2}, [1, 2]), | |
| (pyfunc, (), {'arg1': 1, 'arg2': 2}, [1, 2]), | |
| # Python instance methods | |
| (PYTHON_INSTANCE.method, (1,), {'arg2': 2}, [1, 2]), | |
| (PYTHON_INSTANCE.method, (), {'arg1': 1, 'arg2': 2}, [1, 2]), | |
| # C callables are added later | |
| ] | |
| # Add all the calling conventions and variants of C callables | |
| _instance = _testcapi.MethInstance() | |
| for obj, expected_self in ( | |
| (_testcapi, _testcapi), # module-level function | |
| (_instance, _instance), # bound method | |
| (_testcapi.MethClass, _testcapi.MethClass), # class method on class | |
| (_testcapi.MethClass(), _testcapi.MethClass), # class method on inst. | |
| (_testcapi.MethStatic, None), # static method | |
| ): | |
| CALLS_POSARGS.extend([ | |
| (obj.meth_varargs, (1, 2), (expected_self, (1, 2))), | |
| (obj.meth_varargs_keywords, | |
| (1, 2), (expected_self, (1, 2), NULL_OR_EMPTY)), | |
| (obj.meth_fastcall, (1, 2), (expected_self, (1, 2))), | |
| (obj.meth_fastcall, (), (expected_self, ())), | |
| (obj.meth_fastcall_keywords, | |
| (1, 2), (expected_self, (1, 2), NULL_OR_EMPTY)), | |
| (obj.meth_fastcall_keywords, | |
| (), (expected_self, (), NULL_OR_EMPTY)), | |
| (obj.meth_noargs, (), expected_self), | |
| (obj.meth_o, (123, ), (expected_self, 123)), | |
| ]) | |
| CALLS_KWARGS.extend([ | |
| (obj.meth_varargs_keywords, | |
| (1, 2), {'x': 'y'}, (expected_self, (1, 2), {'x': 'y'})), | |
| (obj.meth_varargs_keywords, | |
| (), {'x': 'y'}, (expected_self, (), {'x': 'y'})), | |
| (obj.meth_varargs_keywords, | |
| (1, 2), {}, (expected_self, (1, 2), NULL_OR_EMPTY)), | |
| (obj.meth_fastcall_keywords, | |
| (1, 2), {'x': 'y'}, (expected_self, (1, 2), {'x': 'y'})), | |
| (obj.meth_fastcall_keywords, | |
| (), {'x': 'y'}, (expected_self, (), {'x': 'y'})), | |
| (obj.meth_fastcall_keywords, | |
| (1, 2), {}, (expected_self, (1, 2), NULL_OR_EMPTY)), | |
| ]) | |
| def check_result(self, result, expected): | |
| if isinstance(expected, tuple) and expected[-1] is NULL_OR_EMPTY: | |
| if result[-1] in ({}, None): | |
| expected = (*expected[:-1], result[-1]) | |
| self.assertEqual(result, expected) | |
| def test_fastcall(self): | |
| # Test _PyObject_FastCall() | |
| for func, args, expected in self.CALLS_POSARGS: | |
| with self.subTest(func=func, args=args): | |
| result = _testcapi.pyobject_fastcall(func, args) | |
| self.check_result(result, expected) | |
| if not args: | |
| # args=NULL, nargs=0 | |
| result = _testcapi.pyobject_fastcall(func, None) | |
| self.check_result(result, expected) | |
| def test_vectorcall_dict(self): | |
| # Test PyObject_VectorcallDict() | |
| for func, args, expected in self.CALLS_POSARGS: | |
| with self.subTest(func=func, args=args): | |
| # kwargs=NULL | |
| result = _testcapi.pyobject_fastcalldict(func, args, None) | |
| self.check_result(result, expected) | |
| if not args: | |
| # args=NULL, nargs=0, kwargs=NULL | |
| result = _testcapi.pyobject_fastcalldict(func, None, None) | |
| self.check_result(result, expected) | |
| for func, args, kwargs, expected in self.CALLS_KWARGS: | |
| with self.subTest(func=func, args=args, kwargs=kwargs): | |
| result = _testcapi.pyobject_fastcalldict(func, args, kwargs) | |
| self.check_result(result, expected) | |
| def test_vectorcall(self): | |
| # Test PyObject_Vectorcall() | |
| for func, args, expected in self.CALLS_POSARGS: | |
| with self.subTest(func=func, args=args): | |
| # kwnames=NULL | |
| result = _testcapi.pyobject_vectorcall(func, args, None) | |
| self.check_result(result, expected) | |
| # kwnames=() | |
| result = _testcapi.pyobject_vectorcall(func, args, ()) | |
| self.check_result(result, expected) | |
| if not args: | |
| # kwnames=NULL | |
| result = _testcapi.pyobject_vectorcall(func, None, None) | |
| self.check_result(result, expected) | |
| # kwnames=() | |
| result = _testcapi.pyobject_vectorcall(func, None, ()) | |
| self.check_result(result, expected) | |
| for func, args, kwargs, expected in self.CALLS_KWARGS: | |
| with self.subTest(func=func, args=args, kwargs=kwargs): | |
| kwnames = tuple(kwargs.keys()) | |
| args = args + tuple(kwargs.values()) | |
| result = _testcapi.pyobject_vectorcall(func, args, kwnames) | |
| self.check_result(result, expected) | |
| def test_fastcall_clearing_dict(self): | |
| # Test bpo-36907: the point of the test is just checking that this | |
| # does not crash. | |
| class IntWithDict: | |
| __slots__ = ["kwargs"] | |
| def __init__(self, **kwargs): | |
| self.kwargs = kwargs | |
| def __index__(self): | |
| self.kwargs.clear() | |
| gc.collect() | |
| return 0 | |
| x = IntWithDict(dont_inherit=IntWithDict()) | |
| # We test the argument handling of "compile" here, the compilation | |
| # itself is not relevant. When we pass flags=x below, x.__index__() is | |
| # called, which changes the keywords dict. | |
| compile("pass", "", "exec", x, **x.kwargs) | |
| Py_TPFLAGS_HAVE_VECTORCALL = 1 << 11 | |
| Py_TPFLAGS_METHOD_DESCRIPTOR = 1 << 17 | |
| def testfunction(self): | |
| """some doc""" | |
| return self | |
| def testfunction_kw(self, *, kw): | |
| """some doc""" | |
| return self | |
| class TestPEP590(unittest.TestCase): | |
| def test_method_descriptor_flag(self): | |
| import functools | |
| cached = functools.lru_cache(1)(testfunction) | |
| self.assertFalse(type(repr).__flags__ & Py_TPFLAGS_METHOD_DESCRIPTOR) | |
| self.assertTrue(type(list.append).__flags__ & Py_TPFLAGS_METHOD_DESCRIPTOR) | |
| self.assertTrue(type(list.__add__).__flags__ & Py_TPFLAGS_METHOD_DESCRIPTOR) | |
| self.assertTrue(type(testfunction).__flags__ & Py_TPFLAGS_METHOD_DESCRIPTOR) | |
| self.assertTrue(type(cached).__flags__ & Py_TPFLAGS_METHOD_DESCRIPTOR) | |
| self.assertTrue(_testcapi.MethodDescriptorBase.__flags__ & Py_TPFLAGS_METHOD_DESCRIPTOR) | |
| self.assertTrue(_testcapi.MethodDescriptorDerived.__flags__ & Py_TPFLAGS_METHOD_DESCRIPTOR) | |
| self.assertFalse(_testcapi.MethodDescriptorNopGet.__flags__ & Py_TPFLAGS_METHOD_DESCRIPTOR) | |
| # Heap type should not inherit Py_TPFLAGS_METHOD_DESCRIPTOR | |
| class MethodDescriptorHeap(_testcapi.MethodDescriptorBase): | |
| pass | |
| self.assertFalse(MethodDescriptorHeap.__flags__ & Py_TPFLAGS_METHOD_DESCRIPTOR) | |
| def test_vectorcall_flag(self): | |
| self.assertTrue(_testcapi.MethodDescriptorBase.__flags__ & Py_TPFLAGS_HAVE_VECTORCALL) | |
| self.assertTrue(_testcapi.MethodDescriptorDerived.__flags__ & Py_TPFLAGS_HAVE_VECTORCALL) | |
| self.assertFalse(_testcapi.MethodDescriptorNopGet.__flags__ & Py_TPFLAGS_HAVE_VECTORCALL) | |
| self.assertTrue(_testcapi.MethodDescriptor2.__flags__ & Py_TPFLAGS_HAVE_VECTORCALL) | |
| # Heap type should not inherit Py_TPFLAGS_HAVE_VECTORCALL | |
| class MethodDescriptorHeap(_testcapi.MethodDescriptorBase): | |
| pass | |
| self.assertFalse(MethodDescriptorHeap.__flags__ & Py_TPFLAGS_HAVE_VECTORCALL) | |
| def test_vectorcall_override(self): | |
| # Check that tp_call can correctly override vectorcall. | |
| # MethodDescriptorNopGet implements tp_call but it inherits from | |
| # MethodDescriptorBase, which implements vectorcall. Since | |
| # MethodDescriptorNopGet returns the args tuple when called, we check | |
| # additionally that no new tuple is created for this call. | |
| args = tuple(range(5)) | |
| f = _testcapi.MethodDescriptorNopGet() | |
| self.assertIs(f(*args), args) | |
| def test_vectorcall(self): | |
| # Test a bunch of different ways to call objects: | |
| # 1. vectorcall using PyVectorcall_Call() | |
| # (only for objects that support vectorcall directly) | |
| # 2. normal call | |
| # 3. vectorcall using PyObject_Vectorcall() | |
| # 4. call as bound method | |
| # 5. call using functools.partial | |
| # A list of (function, args, kwargs, result) calls to test | |
| calls = [(len, (range(42),), {}, 42), | |
| (list.append, ([], 0), {}, None), | |
| ([].append, (0,), {}, None), | |
| (sum, ([36],), {"start":6}, 42), | |
| (testfunction, (42,), {}, 42), | |
| (testfunction_kw, (42,), {"kw":None}, 42), | |
| (_testcapi.MethodDescriptorBase(), (0,), {}, True), | |
| (_testcapi.MethodDescriptorDerived(), (0,), {}, True), | |
| (_testcapi.MethodDescriptor2(), (0,), {}, False)] | |
| from _testcapi import pyobject_vectorcall, pyvectorcall_call | |
| from types import MethodType | |
| from functools import partial | |
| def vectorcall(func, args, kwargs): | |
| args = *args, *kwargs.values() | |
| kwnames = tuple(kwargs) | |
| return pyobject_vectorcall(func, args, kwnames) | |
| for (func, args, kwargs, expected) in calls: | |
| with self.subTest(str(func)): | |
| if not kwargs: | |
| self.assertEqual(expected, pyvectorcall_call(func, args)) | |
| self.assertEqual(expected, pyvectorcall_call(func, args, kwargs)) | |
| # Add derived classes (which do not support vectorcall directly, | |
| # but do support all other ways of calling). | |
| class MethodDescriptorHeap(_testcapi.MethodDescriptorBase): | |
| pass | |
| class MethodDescriptorOverridden(_testcapi.MethodDescriptorBase): | |
| def __call__(self, n): | |
| return 'new' | |
| class SuperBase: | |
| def __call__(self, *args): | |
| return super().__call__(*args) | |
| class MethodDescriptorSuper(SuperBase, _testcapi.MethodDescriptorBase): | |
| def __call__(self, *args): | |
| return super().__call__(*args) | |
| calls += [ | |
| (dict.update, ({},), {"key":True}, None), | |
| ({}.update, ({},), {"key":True}, None), | |
| (MethodDescriptorHeap(), (0,), {}, True), | |
| (MethodDescriptorOverridden(), (0,), {}, 'new'), | |
| (MethodDescriptorSuper(), (0,), {}, True), | |
| ] | |
| for (func, args, kwargs, expected) in calls: | |
| with self.subTest(str(func)): | |
| args1 = args[1:] | |
| meth = MethodType(func, args[0]) | |
| wrapped = partial(func) | |
| if not kwargs: | |
| self.assertEqual(expected, func(*args)) | |
| self.assertEqual(expected, pyobject_vectorcall(func, args, None)) | |
| self.assertEqual(expected, meth(*args1)) | |
| self.assertEqual(expected, wrapped(*args)) | |
| self.assertEqual(expected, func(*args, **kwargs)) | |
| self.assertEqual(expected, vectorcall(func, args, kwargs)) | |
| self.assertEqual(expected, meth(*args1, **kwargs)) | |
| self.assertEqual(expected, wrapped(*args, **kwargs)) | |
| class A: | |
| def method_two_args(self, x, y): | |
| pass | |
| @staticmethod | |
| def static_no_args(): | |
| pass | |
| @staticmethod | |
| def positional_only(arg, /): | |
| pass | |
| @cpython_only | |
| class TestErrorMessagesUseQualifiedName(unittest.TestCase): | |
| @contextlib.contextmanager | |
| def check_raises_type_error(self, message): | |
| with self.assertRaises(TypeError) as cm: | |
| yield | |
| self.assertEqual(str(cm.exception), message) | |
| def test_missing_arguments(self): | |
| msg = "A.method_two_args() missing 1 required positional argument: 'y'" | |
| with self.check_raises_type_error(msg): | |
| A().method_two_args("x") | |
| def test_too_many_positional(self): | |
| msg = "A.static_no_args() takes 0 positional arguments but 1 was given" | |
| with self.check_raises_type_error(msg): | |
| A.static_no_args("oops it's an arg") | |
| def test_positional_only_passed_as_keyword(self): | |
| msg = "A.positional_only() got some positional-only arguments passed as keyword arguments: 'arg'" | |
| with self.check_raises_type_error(msg): | |
| A.positional_only(arg="x") | |
| def test_unexpected_keyword(self): | |
| msg = "A.method_two_args() got an unexpected keyword argument 'bad'" | |
| with self.check_raises_type_error(msg): | |
| A().method_two_args(bad="x") | |
| def test_multiple_values(self): | |
| msg = "A.method_two_args() got multiple values for argument 'x'" | |
| with self.check_raises_type_error(msg): | |
| A().method_two_args("x", "y", x="oops") | |
| if __name__ == "__main__": | |
| unittest.main() |