mirror of https://github.com/python/cpython.git
62 lines
1.4 KiB
Python
62 lines
1.4 KiB
Python
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import unittest
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import test.support
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import io
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import ast
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import _ast
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import unparse
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forelse = """\
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def f():
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for x in range(10):
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break
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else:
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y = 2
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z = 3
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"""
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whileelse = """\
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def g():
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while True:
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break
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else:
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y = 2
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z = 3
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"""
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class UnparseTestCase(unittest.TestCase):
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# Tests for specific bugs found in earlier versions of unparse
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def check_roundtrip(self, code1, filename="internal"):
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ast1 = compile(code1, filename, "exec", _ast.PyCF_ONLY_AST)
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unparse_buffer = io.StringIO()
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unparse.Unparser(ast1, unparse_buffer)
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code2 = unparse_buffer.getvalue()
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ast2 = compile(code2, filename, "exec", _ast.PyCF_ONLY_AST)
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self.assertEqual(ast.dump(ast1), ast.dump(ast2))
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def test_del_statement(self):
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self.check_roundtrip("del x, y, z")
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def test_shifts(self):
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self.check_roundtrip("45 << 2")
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self.check_roundtrip("13 >> 7")
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def test_for_else(self):
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self.check_roundtrip(forelse)
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def test_while_else(self):
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self.check_roundtrip(whileelse)
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def test_unary_parens(self):
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self.check_roundtrip("(-1)**7")
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self.check_roundtrip("not True or False")
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self.check_roundtrip("True or not False")
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def test_main():
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test.support.run_unittest(UnparseTestCase)
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if __name__ == '__main__':
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test_main()
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