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1bc2fdd785
I should also not that my last checkin did stuff that made failures give more helpful information.
93 lines
2.6 KiB
Python
93 lines
2.6 KiB
Python
from test.test_support import verify, verbose, TestFailed, run_unittest
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import sys
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import dis
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import StringIO
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# Minimal tests for dis module
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import unittest
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def _f(a):
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print a
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return 1
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dis_f = """\
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%-4d 0 LOAD_FAST 0 (a)
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3 PRINT_ITEM
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4 PRINT_NEWLINE
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%-4d 5 LOAD_CONST 1 (1)
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8 RETURN_VALUE
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9 LOAD_CONST 0 (None)
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12 RETURN_VALUE
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"""%(_f.func_code.co_firstlineno + 1,
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_f.func_code.co_firstlineno + 2)
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def bug708901():
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for res in range(1,
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10):
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pass
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dis_bug708901 = """\
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%-4d 0 SETUP_LOOP 23 (to 26)
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3 LOAD_GLOBAL 0 (range)
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6 LOAD_CONST 1 (1)
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%-4d 9 LOAD_CONST 2 (10)
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12 CALL_FUNCTION 2
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15 GET_ITER
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>> 16 FOR_ITER 6 (to 25)
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19 STORE_FAST 0 (res)
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%-4d 22 JUMP_ABSOLUTE 16
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>> 25 POP_BLOCK
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>> 26 LOAD_CONST 0 (None)
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29 RETURN_VALUE
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"""%(bug708901.func_code.co_firstlineno + 1,
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bug708901.func_code.co_firstlineno + 2,
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bug708901.func_code.co_firstlineno + 3)
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class DisTests(unittest.TestCase):
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def do_disassembly_test(self, func, expected):
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s = StringIO.StringIO()
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save_stdout = sys.stdout
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sys.stdout = s
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dis.dis(func)
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sys.stdout = save_stdout
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got = s.getvalue()
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# Trim trailing blanks (if any).
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lines = got.split('\n')
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lines = [line.rstrip() for line in lines]
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expected = expected.split("\n")
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import difflib
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if expected != lines:
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self.fail(
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"events did not match expectation:\n" +
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"\n".join(difflib.ndiff(expected,
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lines)))
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def test_opmap(self):
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self.assertEqual(dis.opmap["STOP_CODE"], 0)
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self.assertEqual(dis.opmap["LOAD_CONST"] in dis.hasconst, True)
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self.assertEqual(dis.opmap["STORE_NAME"] in dis.hasname, True)
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def test_opname(self):
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self.assertEqual(dis.opname[dis.opmap["LOAD_FAST"]], "LOAD_FAST")
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def test_boundaries(self):
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self.assertEqual(dis.opmap["EXTENDED_ARG"], dis.EXTENDED_ARG)
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self.assertEqual(dis.opmap["STORE_NAME"], dis.HAVE_ARGUMENT)
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def test_dis(self):
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self.do_disassembly_test(_f, dis_f)
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def test_bug_708901(self):
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self.do_disassembly_test(bug708901, dis_bug708901)
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def test_main():
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run_unittest(DisTests)
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if __name__ == "__main__":
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test_main()
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