import unittest

from test import test_support

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.

    def test_func_parens_no_unpacking(self):

        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):

        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):

        def f(((((x)),),)): return x

        self.check(f, 2, ((2,),))

    def test_func_3(self):

        def f((((((x)),),),)): return x

        self.check(f, 3, (((3,),),))

    def test_func_complex(self):

        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):

        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):

        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):

        f = lambda (((((x)),),)): x

        self.check(f, 2, ((2,),))

    def test_lambda_3(self):

        f = lambda ((((((x)),),),)): x

        self.check(f, 3, (((3,),),))

    def test_lambda_complex(self):

        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():

    test_support.run_unittest(ComplexArgsTestCase)

if __name__ == "__main__":

    test_main()