[Python-checkins] cpython: Issue 24297: Add a unittest that Lib/symbol.py is in sync with Grammar
yury.selivanov
python-checkins at python.org
Thu May 28 20:06:18 CEST 2015
https://hg.python.org/cpython/rev/a95d0dd3c2b1
changeset: 96338:a95d0dd3c2b1
user: Yury Selivanov <yselivanov at sprymix.com>
date: Thu May 28 14:06:12 2015 -0400
summary:
Issue 24297: Add a unittest that Lib/symbol.py is in sync with Grammar
files:
Lib/test/test_symbol.py | 45 +++++++++++++++++++++++++++++
1 files changed, 45 insertions(+), 0 deletions(-)
diff --git a/Lib/test/test_symbol.py b/Lib/test/test_symbol.py
new file mode 100644
--- /dev/null
+++ b/Lib/test/test_symbol.py
@@ -0,0 +1,45 @@
+import unittest
+from test import support
+import filecmp
+import os
+import sys
+import subprocess
+
+
+SYMBOL_FILE = support.findfile('symbol.py')
+GRAMMAR_FILE = os.path.join(os.path.dirname(__file__),
+ '..', '..', 'Include', 'graminit.h')
+TEST_PY_FILE = 'symbol_test.py'
+
+
+class TestSymbolGeneration(unittest.TestCase):
+
+ def _copy_file_without_generated_symbols(self, source_file, dest_file):
+ with open(source_file, 'rb') as fp:
+ lines = fp.readlines()
+ nl = lines[0][len(lines[0].rstrip()):]
+ with open(dest_file, 'wb') as fp:
+ fp.writelines(lines[:lines.index(b"#--start constants--" + nl) + 1])
+ fp.writelines(lines[lines.index(b"#--end constants--" + nl):])
+
+ def _generate_symbols(self, grammar_file, target_symbol_py_file):
+ proc = subprocess.Popen([sys.executable,
+ SYMBOL_FILE,
+ grammar_file,
+ target_symbol_py_file], stderr=subprocess.PIPE)
+ stderr = proc.communicate()[1]
+ return proc.returncode, stderr
+
+ @unittest.skipIf(not os.path.exists(GRAMMAR_FILE),
+ 'test only works from source build directory')
+ def test_real_grammar_and_symbol_file(self):
+ self._copy_file_without_generated_symbols(SYMBOL_FILE, TEST_PY_FILE)
+ self.addCleanup(support.unlink, TEST_PY_FILE)
+ self.assertFalse(filecmp.cmp(SYMBOL_FILE, TEST_PY_FILE))
+ self.assertEqual((0, b''), self._generate_symbols(GRAMMAR_FILE,
+ TEST_PY_FILE))
+ self.assertTrue(filecmp.cmp(SYMBOL_FILE, TEST_PY_FILE))
+
+
+if __name__ == "__main__":
+ unittest.main()
--
Repository URL: https://hg.python.org/cpython
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