463 lines
15 KiB
Python
463 lines
15 KiB
Python
import datetime
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import unittest
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from test.support import cpython_only
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try:
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import _testcapi
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except ImportError:
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_testcapi = None
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import struct
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import collections
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import itertools
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class FunctionCalls(unittest.TestCase):
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def test_kwargs_order(self):
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# bpo-34320: **kwargs should preserve order of passed OrderedDict
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od = collections.OrderedDict([('a', 1), ('b', 2)])
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od.move_to_end('a')
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expected = list(od.items())
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def fn(**kw):
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return kw
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res = fn(**od)
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self.assertIsInstance(res, dict)
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self.assertEqual(list(res.items()), expected)
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# The test cases here cover several paths through the function calling
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# code. They depend on the METH_XXX flag that is used to define a C
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# function, which can't be verified from Python. If the METH_XXX decl
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# for a C function changes, these tests may not cover the right paths.
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class CFunctionCalls(unittest.TestCase):
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def test_varargs0(self):
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self.assertRaises(TypeError, {}.__contains__)
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def test_varargs1(self):
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{}.__contains__(0)
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def test_varargs2(self):
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self.assertRaises(TypeError, {}.__contains__, 0, 1)
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def test_varargs0_ext(self):
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try:
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{}.__contains__(*())
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except TypeError:
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pass
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def test_varargs1_ext(self):
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{}.__contains__(*(0,))
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def test_varargs2_ext(self):
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try:
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{}.__contains__(*(1, 2))
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except TypeError:
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pass
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else:
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raise RuntimeError
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def test_varargs1_kw(self):
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self.assertRaises(TypeError, {}.__contains__, x=2)
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def test_varargs2_kw(self):
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self.assertRaises(TypeError, {}.__contains__, x=2, y=2)
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def test_oldargs0_0(self):
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{}.keys()
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def test_oldargs0_1(self):
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self.assertRaises(TypeError, {}.keys, 0)
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def test_oldargs0_2(self):
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self.assertRaises(TypeError, {}.keys, 0, 1)
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def test_oldargs0_0_ext(self):
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{}.keys(*())
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def test_oldargs0_1_ext(self):
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try:
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{}.keys(*(0,))
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except TypeError:
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pass
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else:
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raise RuntimeError
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def test_oldargs0_2_ext(self):
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try:
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{}.keys(*(1, 2))
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except TypeError:
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pass
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else:
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raise RuntimeError
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def test_oldargs0_0_kw(self):
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try:
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{}.keys(x=2)
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except TypeError:
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pass
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else:
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raise RuntimeError
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def test_oldargs0_1_kw(self):
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self.assertRaises(TypeError, {}.keys, x=2)
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def test_oldargs0_2_kw(self):
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self.assertRaises(TypeError, {}.keys, x=2, y=2)
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def test_oldargs1_0(self):
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self.assertRaises(TypeError, [].count)
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def test_oldargs1_1(self):
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[].count(1)
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def test_oldargs1_2(self):
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self.assertRaises(TypeError, [].count, 1, 2)
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def test_oldargs1_0_ext(self):
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try:
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[].count(*())
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except TypeError:
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pass
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else:
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raise RuntimeError
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def test_oldargs1_1_ext(self):
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[].count(*(1,))
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def test_oldargs1_2_ext(self):
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try:
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[].count(*(1, 2))
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except TypeError:
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pass
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else:
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raise RuntimeError
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def test_oldargs1_0_kw(self):
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self.assertRaises(TypeError, [].count, x=2)
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def test_oldargs1_1_kw(self):
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self.assertRaises(TypeError, [].count, {}, x=2)
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def test_oldargs1_2_kw(self):
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self.assertRaises(TypeError, [].count, x=2, y=2)
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@cpython_only
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class CFunctionCallsErrorMessages(unittest.TestCase):
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def test_varargs0(self):
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msg = r"__contains__\(\) takes exactly one argument \(0 given\)"
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self.assertRaisesRegex(TypeError, msg, {}.__contains__)
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def test_varargs2(self):
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msg = r"__contains__\(\) takes exactly one argument \(2 given\)"
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self.assertRaisesRegex(TypeError, msg, {}.__contains__, 0, 1)
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def test_varargs3(self):
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msg = r"^from_bytes\(\) takes at most 2 positional arguments \(3 given\)"
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self.assertRaisesRegex(TypeError, msg, int.from_bytes, b'a', 'little', False)
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def test_varargs1min(self):
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msg = r"get expected at least 1 argument, got 0"
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self.assertRaisesRegex(TypeError, msg, {}.get)
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msg = r"expected 1 argument, got 0"
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self.assertRaisesRegex(TypeError, msg, {}.__delattr__)
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def test_varargs2min(self):
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msg = r"getattr expected at least 2 arguments, got 0"
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self.assertRaisesRegex(TypeError, msg, getattr)
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def test_varargs1max(self):
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msg = r"input expected at most 1 argument, got 2"
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self.assertRaisesRegex(TypeError, msg, input, 1, 2)
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def test_varargs2max(self):
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msg = r"get expected at most 2 arguments, got 3"
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self.assertRaisesRegex(TypeError, msg, {}.get, 1, 2, 3)
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def test_varargs1_kw(self):
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msg = r"__contains__\(\) takes no keyword arguments"
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self.assertRaisesRegex(TypeError, msg, {}.__contains__, x=2)
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def test_varargs2_kw(self):
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msg = r"__contains__\(\) takes no keyword arguments"
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self.assertRaisesRegex(TypeError, msg, {}.__contains__, x=2, y=2)
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def test_varargs3_kw(self):
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msg = r"bool\(\) takes no keyword arguments"
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self.assertRaisesRegex(TypeError, msg, bool, x=2)
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def test_varargs4_kw(self):
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msg = r"^index\(\) takes no keyword arguments$"
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self.assertRaisesRegex(TypeError, msg, [].index, x=2)
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def test_varargs5_kw(self):
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msg = r"^hasattr\(\) takes no keyword arguments$"
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self.assertRaisesRegex(TypeError, msg, hasattr, x=2)
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def test_varargs6_kw(self):
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msg = r"^getattr\(\) takes no keyword arguments$"
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self.assertRaisesRegex(TypeError, msg, getattr, x=2)
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def test_varargs7_kw(self):
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msg = r"^next\(\) takes no keyword arguments$"
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self.assertRaisesRegex(TypeError, msg, next, x=2)
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def test_varargs8_kw(self):
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msg = r"^pack\(\) takes no keyword arguments$"
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self.assertRaisesRegex(TypeError, msg, struct.pack, x=2)
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def test_varargs9_kw(self):
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msg = r"^pack_into\(\) takes no keyword arguments$"
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self.assertRaisesRegex(TypeError, msg, struct.pack_into, x=2)
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def test_varargs10_kw(self):
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msg = r"^index\(\) takes no keyword arguments$"
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self.assertRaisesRegex(TypeError, msg, collections.deque().index, x=2)
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def test_varargs11_kw(self):
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msg = r"^pack\(\) takes no keyword arguments$"
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self.assertRaisesRegex(TypeError, msg, struct.Struct.pack, struct.Struct(""), x=2)
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def test_varargs12_kw(self):
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msg = r"^staticmethod\(\) takes no keyword arguments$"
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self.assertRaisesRegex(TypeError, msg, staticmethod, func=id)
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def test_varargs13_kw(self):
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msg = r"^classmethod\(\) takes no keyword arguments$"
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self.assertRaisesRegex(TypeError, msg, classmethod, func=id)
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def test_varargs14_kw(self):
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msg = r"^product\(\) takes at most 1 keyword argument \(2 given\)$"
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self.assertRaisesRegex(TypeError, msg,
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itertools.product, 0, repeat=1, foo=2)
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def test_varargs15_kw(self):
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msg = r"^ImportError\(\) takes at most 2 keyword arguments \(3 given\)$"
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self.assertRaisesRegex(TypeError, msg,
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ImportError, 0, name=1, path=2, foo=3)
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def test_varargs16_kw(self):
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msg = r"^min\(\) takes at most 2 keyword arguments \(3 given\)$"
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self.assertRaisesRegex(TypeError, msg,
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min, 0, default=1, key=2, foo=3)
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def test_varargs17_kw(self):
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msg = r"^print\(\) takes at most 4 keyword arguments \(5 given\)$"
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self.assertRaisesRegex(TypeError, msg,
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print, 0, sep=1, end=2, file=3, flush=4, foo=5)
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def test_oldargs0_1(self):
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msg = r"keys\(\) takes no arguments \(1 given\)"
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self.assertRaisesRegex(TypeError, msg, {}.keys, 0)
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def test_oldargs0_2(self):
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msg = r"keys\(\) takes no arguments \(2 given\)"
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self.assertRaisesRegex(TypeError, msg, {}.keys, 0, 1)
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def test_oldargs0_1_kw(self):
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msg = r"keys\(\) takes no keyword arguments"
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self.assertRaisesRegex(TypeError, msg, {}.keys, x=2)
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def test_oldargs0_2_kw(self):
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msg = r"keys\(\) takes no keyword arguments"
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self.assertRaisesRegex(TypeError, msg, {}.keys, x=2, y=2)
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def test_oldargs1_0(self):
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msg = r"count\(\) takes exactly one argument \(0 given\)"
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self.assertRaisesRegex(TypeError, msg, [].count)
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def test_oldargs1_2(self):
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msg = r"count\(\) takes exactly one argument \(2 given\)"
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self.assertRaisesRegex(TypeError, msg, [].count, 1, 2)
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def test_oldargs1_0_kw(self):
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msg = r"count\(\) takes no keyword arguments"
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self.assertRaisesRegex(TypeError, msg, [].count, x=2)
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def test_oldargs1_1_kw(self):
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msg = r"count\(\) takes no keyword arguments"
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self.assertRaisesRegex(TypeError, msg, [].count, {}, x=2)
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def test_oldargs1_2_kw(self):
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msg = r"count\(\) takes no keyword arguments"
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self.assertRaisesRegex(TypeError, msg, [].count, x=2, y=2)
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def pyfunc(arg1, arg2):
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return [arg1, arg2]
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def pyfunc_noarg():
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return "noarg"
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class PythonClass:
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def method(self, arg1, arg2):
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return [arg1, arg2]
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def method_noarg(self):
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return "noarg"
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@classmethod
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def class_method(cls):
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return "classmethod"
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@staticmethod
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def static_method():
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return "staticmethod"
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PYTHON_INSTANCE = PythonClass()
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IGNORE_RESULT = object()
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@cpython_only
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class FastCallTests(unittest.TestCase):
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# Test calls with positional arguments
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CALLS_POSARGS = (
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# (func, args: tuple, result)
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# Python function with 2 arguments
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(pyfunc, (1, 2), [1, 2]),
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# Python function without argument
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(pyfunc_noarg, (), "noarg"),
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# Python class methods
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(PythonClass.class_method, (), "classmethod"),
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(PythonClass.static_method, (), "staticmethod"),
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# Python instance methods
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(PYTHON_INSTANCE.method, (1, 2), [1, 2]),
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(PYTHON_INSTANCE.method_noarg, (), "noarg"),
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(PYTHON_INSTANCE.class_method, (), "classmethod"),
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(PYTHON_INSTANCE.static_method, (), "staticmethod"),
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# C function: METH_NOARGS
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(globals, (), IGNORE_RESULT),
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# C function: METH_O
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(id, ("hello",), IGNORE_RESULT),
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# C function: METH_VARARGS
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(dir, (1,), IGNORE_RESULT),
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# C function: METH_VARARGS | METH_KEYWORDS
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(min, (5, 9), 5),
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# C function: METH_FASTCALL
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(divmod, (1000, 33), (30, 10)),
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# C type static method: METH_FASTCALL | METH_CLASS
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(int.from_bytes, (b'\x01\x00', 'little'), 1),
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# bpo-30524: Test that calling a C type static method with no argument
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# doesn't crash (ignore the result): METH_FASTCALL | METH_CLASS
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(datetime.datetime.now, (), IGNORE_RESULT),
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)
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# Test calls with positional and keyword arguments
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CALLS_KWARGS = (
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# (func, args: tuple, kwargs: dict, result)
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# Python function with 2 arguments
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(pyfunc, (1,), {'arg2': 2}, [1, 2]),
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(pyfunc, (), {'arg1': 1, 'arg2': 2}, [1, 2]),
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# Python instance methods
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(PYTHON_INSTANCE.method, (1,), {'arg2': 2}, [1, 2]),
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(PYTHON_INSTANCE.method, (), {'arg1': 1, 'arg2': 2}, [1, 2]),
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# C function: METH_VARARGS | METH_KEYWORDS
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(max, ([],), {'default': 9}, 9),
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# C type static method: METH_FASTCALL | METH_CLASS
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(int.from_bytes, (b'\x01\x00',), {'byteorder': 'little'}, 1),
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(int.from_bytes, (), {'bytes': b'\x01\x00', 'byteorder': 'little'}, 1),
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)
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def check_result(self, result, expected):
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if expected is IGNORE_RESULT:
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return
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self.assertEqual(result, expected)
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def test_fastcall(self):
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# Test _PyObject_FastCall()
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for func, args, expected in self.CALLS_POSARGS:
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with self.subTest(func=func, args=args):
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result = _testcapi.pyobject_fastcall(func, args)
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self.check_result(result, expected)
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if not args:
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# args=NULL, nargs=0
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result = _testcapi.pyobject_fastcall(func, None)
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self.check_result(result, expected)
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def test_fastcall_dict(self):
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# Test _PyObject_FastCallDict()
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for func, args, expected in self.CALLS_POSARGS:
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with self.subTest(func=func, args=args):
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# kwargs=NULL
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result = _testcapi.pyobject_fastcalldict(func, args, None)
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self.check_result(result, expected)
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# kwargs={}
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result = _testcapi.pyobject_fastcalldict(func, args, {})
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self.check_result(result, expected)
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if not args:
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# args=NULL, nargs=0, kwargs=NULL
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result = _testcapi.pyobject_fastcalldict(func, None, None)
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self.check_result(result, expected)
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# args=NULL, nargs=0, kwargs={}
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result = _testcapi.pyobject_fastcalldict(func, None, {})
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self.check_result(result, expected)
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for func, args, kwargs, expected in self.CALLS_KWARGS:
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with self.subTest(func=func, args=args, kwargs=kwargs):
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result = _testcapi.pyobject_fastcalldict(func, args, kwargs)
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self.check_result(result, expected)
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def test_fastcall_keywords(self):
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# Test _PyObject_FastCallKeywords()
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for func, args, expected in self.CALLS_POSARGS:
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with self.subTest(func=func, args=args):
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# kwnames=NULL
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result = _testcapi.pyobject_fastcallkeywords(func, args, None)
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self.check_result(result, expected)
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# kwnames=()
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result = _testcapi.pyobject_fastcallkeywords(func, args, ())
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self.check_result(result, expected)
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if not args:
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# kwnames=NULL
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result = _testcapi.pyobject_fastcallkeywords(func, None, None)
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self.check_result(result, expected)
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# kwnames=()
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result = _testcapi.pyobject_fastcallkeywords(func, None, ())
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self.check_result(result, expected)
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for func, args, kwargs, expected in self.CALLS_KWARGS:
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with self.subTest(func=func, args=args, kwargs=kwargs):
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kwnames = tuple(kwargs.keys())
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args = args + tuple(kwargs.values())
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result = _testcapi.pyobject_fastcallkeywords(func, args, kwnames)
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self.check_result(result, expected)
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if __name__ == "__main__":
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unittest.main()
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