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119 lines
3.4 KiB
119 lines
3.4 KiB
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import unittest
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from test import test_support
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import textwrap
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class ComplexArgsTestCase(unittest.TestCase):
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def check(self, func, expected, *args):
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self.assertEqual(func(*args), expected)
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# These functions are tested below as lambdas too. If you add a
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# function test, also add a similar lambda test.
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# Functions are wrapped in "exec" statements in order to
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# silence Py3k warnings.
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def test_func_parens_no_unpacking(self):
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exec textwrap.dedent("""
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def f(((((x))))): return x
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self.check(f, 1, 1)
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# Inner parens are elided, same as: f(x,)
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def f(((x)),): return x
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self.check(f, 2, 2)
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""")
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def test_func_1(self):
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exec textwrap.dedent("""
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def f(((((x),)))): return x
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self.check(f, 3, (3,))
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def f(((((x)),))): return x
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self.check(f, 4, (4,))
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def f(((((x))),)): return x
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self.check(f, 5, (5,))
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def f(((x),)): return x
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self.check(f, 6, (6,))
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""")
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def test_func_2(self):
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exec textwrap.dedent("""
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def f(((((x)),),)): return x
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self.check(f, 2, ((2,),))
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""")
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def test_func_3(self):
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exec textwrap.dedent("""
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def f((((((x)),),),)): return x
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self.check(f, 3, (((3,),),))
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""")
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def test_func_complex(self):
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exec textwrap.dedent("""
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def f((((((x)),),),), a, b, c): return x, a, b, c
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self.check(f, (3, 9, 8, 7), (((3,),),), 9, 8, 7)
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def f(((((((x)),)),),), a, b, c): return x, a, b, c
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self.check(f, (3, 9, 8, 7), (((3,),),), 9, 8, 7)
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def f(a, b, c, ((((((x)),)),),)): return a, b, c, x
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self.check(f, (9, 8, 7, 3), 9, 8, 7, (((3,),),))
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""")
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# Duplicate the tests above, but for lambda. If you add a lambda test,
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# also add a similar function test above.
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def test_lambda_parens_no_unpacking(self):
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exec textwrap.dedent("""
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f = lambda (((((x))))): x
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self.check(f, 1, 1)
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# Inner parens are elided, same as: f(x,)
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f = lambda ((x)),: x
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self.check(f, 2, 2)
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""")
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def test_lambda_1(self):
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exec textwrap.dedent("""
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f = lambda (((((x),)))): x
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self.check(f, 3, (3,))
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f = lambda (((((x)),))): x
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self.check(f, 4, (4,))
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f = lambda (((((x))),)): x
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self.check(f, 5, (5,))
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f = lambda (((x),)): x
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self.check(f, 6, (6,))
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""")
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def test_lambda_2(self):
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exec textwrap.dedent("""
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f = lambda (((((x)),),)): x
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self.check(f, 2, ((2,),))
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""")
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def test_lambda_3(self):
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exec textwrap.dedent("""
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f = lambda ((((((x)),),),)): x
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self.check(f, 3, (((3,),),))
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""")
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def test_lambda_complex(self):
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exec textwrap.dedent("""
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f = lambda (((((x)),),),), a, b, c: (x, a, b, c)
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self.check(f, (3, 9, 8, 7), (((3,),),), 9, 8, 7)
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f = lambda ((((((x)),)),),), a, b, c: (x, a, b, c)
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self.check(f, (3, 9, 8, 7), (((3,),),), 9, 8, 7)
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f = lambda a, b, c, ((((((x)),)),),): (a, b, c, x)
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self.check(f, (9, 8, 7, 3), 9, 8, 7, (((3,),),))
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""")
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def test_main():
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with test_support.check_py3k_warnings(
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("tuple parameter unpacking has been removed", SyntaxWarning),
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("parenthesized argument names are invalid", SyntaxWarning)):
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test_support.run_unittest(ComplexArgsTestCase)
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if __name__ == "__main__":
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test_main()
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