Mercurial > genshi > genshi-test
comparison markup/tests/eval.py @ 192:cda3bdfc19ed
Expression evaluation now differentiates between undefined variables and variables that are defined but set to `None`.
| author | cmlenz |
|---|---|
| date | Wed, 23 Aug 2006 17:49:14 +0000 |
| parents | 194025141c89 |
| children | eb5c8200f49b |
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| 191:929ef2913b87 | 192:cda3bdfc19ed |
|---|---|
| 18 from markup.eval import Expression | 18 from markup.eval import Expression |
| 19 | 19 |
| 20 | 20 |
| 21 class ExpressionTestCase(unittest.TestCase): | 21 class ExpressionTestCase(unittest.TestCase): |
| 22 | 22 |
| 23 def test_name_lookup(self): | |
| 24 self.assertEqual('bar', Expression('foo').evaluate({'foo': 'bar'})) | |
| 25 self.assertEqual(id, Expression('id').evaluate({}, nocall=True)) | |
| 26 self.assertEqual('bar', Expression('id').evaluate({'id': 'bar'})) | |
| 27 self.assertEqual(None, Expression('id').evaluate({'id': None}, | |
| 28 nocall=True)) | |
| 29 | |
| 23 def test_str_literal(self): | 30 def test_str_literal(self): |
| 24 self.assertEqual('foo', Expression('"foo"').evaluate({})) | 31 self.assertEqual('foo', Expression('"foo"').evaluate({})) |
| 25 self.assertEqual('foo', Expression('"""foo"""').evaluate({})) | 32 self.assertEqual('foo', Expression('"""foo"""').evaluate({})) |
| 26 self.assertEqual('foo', Expression("'foo'").evaluate({})) | 33 self.assertEqual('foo', Expression("'foo'").evaluate({})) |
| 27 self.assertEqual('foo', Expression("'''foo'''").evaluate({})) | 34 self.assertEqual('foo', Expression("'''foo'''").evaluate({})) |
| 231 def test_list_comprehension_with_getitem(self): | 238 def test_list_comprehension_with_getitem(self): |
| 232 items = [{'name': 'a', 'value': 1}, {'name': 'b', 'value': 2}] | 239 items = [{'name': 'a', 'value': 1}, {'name': 'b', 'value': 2}] |
| 233 expr = Expression("[i['name'] for i in items if i['value'] > 1]") | 240 expr = Expression("[i['name'] for i in items if i['value'] > 1]") |
| 234 self.assertEqual(['b'], expr.evaluate({'items': items})) | 241 self.assertEqual(['b'], expr.evaluate({'items': items})) |
| 235 | 242 |
| 236 def test_error_position(self): | 243 def test_error_call_undefined(self): |
| 237 expr = Expression("nothing()", filename='index.html', lineno=50) | 244 expr = Expression("nothing()", filename='index.html', lineno=50) |
| 238 try: | 245 try: |
| 239 expr.evaluate({}) | 246 expr.evaluate({}) |
| 240 self.fail('Expected TypeError') | 247 self.fail('Expected NameError') |
| 241 except TypeError, e: | 248 except NameError, e: |
| 242 exc_type, exc_value, exc_traceback = sys.exc_info() | 249 exc_type, exc_value, exc_traceback = sys.exc_info() |
| 243 frame = exc_traceback.tb_next | 250 frame = exc_traceback.tb_next |
| 251 frames = [] | |
| 244 while frame.tb_next: | 252 while frame.tb_next: |
| 245 frame = frame.tb_next | 253 frame = frame.tb_next |
| 254 frames.append(frame) | |
| 246 self.assertEqual('<Expression "nothing()">', | 255 self.assertEqual('<Expression "nothing()">', |
| 247 frame.tb_frame.f_code.co_name) | 256 frames[-3].tb_frame.f_code.co_name) |
| 248 self.assertEqual('index.html', frame.tb_frame.f_code.co_filename) | 257 self.assertEqual('index.html', |
| 249 self.assertEqual(50, frame.tb_lineno) | 258 frames[-3].tb_frame.f_code.co_filename) |
| 259 self.assertEqual(50, frames[-3].tb_lineno) | |
| 260 | |
| 261 def test_error_getattr_undefined(self): | |
| 262 expr = Expression("nothing.nil", filename='index.html', lineno=50) | |
| 263 try: | |
| 264 expr.evaluate({}) | |
| 265 self.fail('Expected NameError') | |
| 266 except NameError, e: | |
| 267 exc_type, exc_value, exc_traceback = sys.exc_info() | |
| 268 frame = exc_traceback.tb_next | |
| 269 frames = [] | |
| 270 while frame.tb_next: | |
| 271 frame = frame.tb_next | |
| 272 frames.append(frame) | |
| 273 self.assertEqual('<Expression "nothing.nil">', | |
| 274 frames[-3].tb_frame.f_code.co_name) | |
| 275 self.assertEqual('index.html', | |
| 276 frames[-3].tb_frame.f_code.co_filename) | |
| 277 self.assertEqual(50, frames[-3].tb_lineno) | |
| 250 | 278 |
| 251 | 279 |
| 252 def suite(): | 280 def suite(): |
| 253 suite = unittest.TestSuite() | 281 suite = unittest.TestSuite() |
| 254 suite.addTest(unittest.makeSuite(ExpressionTestCase, 'test')) | 282 suite.addTest(unittest.makeSuite(ExpressionTestCase, 'test')) |