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