Mercurial > genshi > genshi-test
comparison markup/tests/eval.py @ 131:203f459e7e26
* Support for line numbers in exceptions in expression evaluation (#22).
* Fix bug in expression evaluation when item access was used inside a lambda or list comprehension. Thanks to Kevin Dangoor for reporting the problem.
| author | cmlenz |
|---|---|
| date | Fri, 04 Aug 2006 13:07:52 +0000 |
| parents | 226613431921 |
| children | df44110ca91d |
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| 130:aa69c1f34a26 | 131:203f459e7e26 |
|---|---|
| 10 # This software consists of voluntary contributions made by many | 10 # This software consists of voluntary contributions made by many |
| 11 # individuals. For the exact contribution history, see the revision | 11 # individuals. For the exact contribution history, see the revision |
| 12 # history and logs, available at hhttp://markup.edgewall.org/log/. | 12 # history and logs, available at hhttp://markup.edgewall.org/log/. |
| 13 | 13 |
| 14 import doctest | 14 import doctest |
| 15 import sys | |
| 15 import unittest | 16 import unittest |
| 16 | 17 |
| 17 from markup.eval import Expression | 18 from markup.eval import Expression |
| 18 | 19 |
| 19 | 20 |
| 212 | 213 |
| 213 expr = Expression("[offset + n for n in numbers]") | 214 expr = Expression("[offset + n for n in numbers]") |
| 214 self.assertEqual([2, 3, 4, 5, 6], | 215 self.assertEqual([2, 3, 4, 5, 6], |
| 215 expr.evaluate({'numbers': range(5), 'offset': 2})) | 216 expr.evaluate({'numbers': range(5), 'offset': 2})) |
| 216 | 217 |
| 218 def test_list_comprehension_with_getattr(self): | |
| 219 items = [{'name': 'a', 'value': 1}, {'name': 'b', 'value': 2}] | |
| 220 expr = Expression("[i.name for i in items if i.value > 1]") | |
| 221 self.assertEqual(['b'], expr.evaluate({'items': items})) | |
| 222 | |
| 223 def test_list_comprehension_with_getitem(self): | |
| 224 items = [{'name': 'a', 'value': 1}, {'name': 'b', 'value': 2}] | |
| 225 expr = Expression("[i['name'] for i in items if i['value'] > 1]") | |
| 226 self.assertEqual(['b'], expr.evaluate({'items': items})) | |
| 227 | |
| 228 def test_error_position(self): | |
| 229 expr = Expression("nothing()", filename='index.html', lineno=50) | |
| 230 try: | |
| 231 expr.evaluate({}) | |
| 232 self.fail('Expected TypeError') | |
| 233 except TypeError, e: | |
| 234 exc_type, exc_value, exc_traceback = sys.exc_info() | |
| 235 frame = exc_traceback.tb_next | |
| 236 while frame.tb_next: | |
| 237 frame = frame.tb_next | |
| 238 self.assertEqual('index.html', frame.tb_frame.f_code.co_filename) | |
| 239 self.assertEqual(50, frame.tb_lineno) | |
| 240 | |
| 217 | 241 |
| 218 def suite(): | 242 def suite(): |
| 219 suite = unittest.TestSuite() | 243 suite = unittest.TestSuite() |
| 220 suite.addTest(unittest.makeSuite(ExpressionTestCase, 'test')) | 244 suite.addTest(unittest.makeSuite(ExpressionTestCase, 'test')) |
| 221 suite.addTest(doctest.DocTestSuite(Expression.__module__)) | 245 suite.addTest(doctest.DocTestSuite(Expression.__module__)) |