import unittest
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from test import test_support
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# Silence Py3k warning
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test_support.import_module('compiler', deprecated=True)
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from compiler import transformer, ast
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from compiler import compile
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class Tests(unittest.TestCase):
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def testMultipleLHS(self):
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""" Test multiple targets on the left hand side. """
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snippets = ['a, b = 1, 2',
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'(a, b) = 1, 2',
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'((a, b), c) = (1, 2), 3']
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for s in snippets:
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a = transformer.parse(s)
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self.assertIsInstance(a, ast.Module)
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child1 = a.getChildNodes()[0]
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self.assertIsInstance(child1, ast.Stmt)
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child2 = child1.getChildNodes()[0]
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self.assertIsInstance(child2, ast.Assign)
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# This actually tests the compiler, but it's a way to assure the ast
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# is correct
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c = compile(s, '<string>', 'single')
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vals = {}
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exec c in vals
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assert vals['a'] == 1
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assert vals['b'] == 2
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def test_main():
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test_support.run_unittest(Tests)
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if __name__ == "__main__":
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test_main()
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