| 1 | n/a | import unittest |
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| 2 | n/a | from test import support |
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| 3 | n/a | import os |
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| 4 | n/a | import sys |
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| 5 | n/a | import subprocess |
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| 6 | n/a | |
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| 7 | n/a | |
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| 8 | n/a | SYMBOL_FILE = support.findfile('symbol.py') |
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| 9 | n/a | GRAMMAR_FILE = os.path.join(os.path.dirname(__file__), |
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| 10 | n/a | '..', '..', 'Include', 'graminit.h') |
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| 11 | n/a | TEST_PY_FILE = 'symbol_test.py' |
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| 12 | n/a | |
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| 13 | n/a | |
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| 14 | n/a | class TestSymbolGeneration(unittest.TestCase): |
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| 15 | n/a | |
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| 16 | n/a | def _copy_file_without_generated_symbols(self, source_file, dest_file): |
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| 17 | n/a | with open(source_file) as fp: |
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| 18 | n/a | lines = fp.readlines() |
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| 19 | n/a | with open(dest_file, 'w') as fp: |
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| 20 | n/a | fp.writelines(lines[:lines.index("#--start constants--\n") + 1]) |
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| 21 | n/a | fp.writelines(lines[lines.index("#--end constants--\n"):]) |
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| 22 | n/a | |
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| 23 | n/a | def _generate_symbols(self, grammar_file, target_symbol_py_file): |
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| 24 | n/a | proc = subprocess.Popen([sys.executable, |
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| 25 | n/a | SYMBOL_FILE, |
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| 26 | n/a | grammar_file, |
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| 27 | n/a | target_symbol_py_file], stderr=subprocess.PIPE) |
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| 28 | n/a | stderr = proc.communicate()[1] |
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| 29 | n/a | return proc.returncode, stderr |
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| 30 | n/a | |
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| 31 | n/a | def compare_files(self, file1, file2): |
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| 32 | n/a | with open(file1) as fp: |
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| 33 | n/a | lines1 = fp.readlines() |
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| 34 | n/a | with open(file2) as fp: |
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| 35 | n/a | lines2 = fp.readlines() |
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| 36 | n/a | self.assertEqual(lines1, lines2) |
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| 37 | n/a | |
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| 38 | n/a | @unittest.skipIf(not os.path.exists(GRAMMAR_FILE), |
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| 39 | n/a | 'test only works from source build directory') |
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| 40 | n/a | def test_real_grammar_and_symbol_file(self): |
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| 41 | n/a | output = support.TESTFN |
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| 42 | n/a | self.addCleanup(support.unlink, output) |
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| 43 | n/a | |
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| 44 | n/a | self._copy_file_without_generated_symbols(SYMBOL_FILE, output) |
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| 45 | n/a | |
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| 46 | n/a | exitcode, stderr = self._generate_symbols(GRAMMAR_FILE, output) |
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| 47 | n/a | self.assertEqual(b'', stderr) |
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| 48 | n/a | self.assertEqual(0, exitcode) |
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| 49 | n/a | |
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| 50 | n/a | self.compare_files(SYMBOL_FILE, output) |
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| 51 | n/a | |
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| 52 | n/a | |
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| 53 | n/a | if __name__ == "__main__": |
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| 54 | n/a | unittest.main() |
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