diff options
Diffstat (limited to 'Lib/unittest/test/test_assertions.py')
| -rw-r--r-- | Lib/unittest/test/test_assertions.py | 73 |
1 files changed, 73 insertions, 0 deletions
diff --git a/Lib/unittest/test/test_assertions.py b/Lib/unittest/test/test_assertions.py index a1d20eb..d43fe5a 100644 --- a/Lib/unittest/test/test_assertions.py +++ b/Lib/unittest/test/test_assertions.py @@ -1,6 +1,7 @@ import datetime import warnings import unittest +from itertools import product class Test_Assertions(unittest.TestCase): @@ -145,6 +146,14 @@ class TestLongMessage(unittest.TestCase): self.testableTrue._formatMessage(one, '\uFFFD') def assertMessages(self, methodName, args, errors): + """ + Check that methodName(*args) raises the correct error messages. + errors should be a list of 4 regex that match the error when: + 1) longMessage = False and no msg passed; + 2) longMessage = False and msg passed; + 3) longMessage = True and no msg passed; + 4) longMessage = True and msg passed; + """ def getMethod(i): useTestableFalse = i < 2 if useTestableFalse: @@ -284,3 +293,67 @@ class TestLongMessage(unittest.TestCase): ["^unexpectedly identical: None$", "^oops$", "^unexpectedly identical: None$", "^unexpectedly identical: None : oops$"]) + + + def assertMessagesCM(self, methodName, args, func, errors): + """ + Check that the correct error messages are raised while executing: + with method(*args): + func() + *errors* should be a list of 4 regex that match the error when: + 1) longMessage = False and no msg passed; + 2) longMessage = False and msg passed; + 3) longMessage = True and no msg passed; + 4) longMessage = True and msg passed; + """ + p = product((self.testableFalse, self.testableTrue), + ({}, {"msg": "oops"})) + for (cls, kwargs), err in zip(p, errors): + method = getattr(cls, methodName) + with self.assertRaisesRegex(cls.failureException, err): + with method(*args, **kwargs) as cm: + func() + + def testAssertRaises(self): + self.assertMessagesCM('assertRaises', (TypeError,), lambda: None, + ['^TypeError not raised$', '^oops$', + '^TypeError not raised$', + '^TypeError not raised : oops$']) + + def testAssertRaisesRegex(self): + # test error not raised + self.assertMessagesCM('assertRaisesRegex', (TypeError, 'unused regex'), + lambda: None, + ['^TypeError not raised$', '^oops$', + '^TypeError not raised$', + '^TypeError not raised : oops$']) + # test error raised but with wrong message + def raise_wrong_message(): + raise TypeError('foo') + self.assertMessagesCM('assertRaisesRegex', (TypeError, 'regex'), + raise_wrong_message, + ['^"regex" does not match "foo"$', '^oops$', + '^"regex" does not match "foo"$', + '^"regex" does not match "foo" : oops$']) + + def testAssertWarns(self): + self.assertMessagesCM('assertWarns', (UserWarning,), lambda: None, + ['^UserWarning not triggered$', '^oops$', + '^UserWarning not triggered$', + '^UserWarning not triggered : oops$']) + + def testAssertWarnsRegex(self): + # test error not raised + self.assertMessagesCM('assertWarnsRegex', (UserWarning, 'unused regex'), + lambda: None, + ['^UserWarning not triggered$', '^oops$', + '^UserWarning not triggered$', + '^UserWarning not triggered : oops$']) + # test warning raised but with wrong message + def raise_wrong_message(): + warnings.warn('foo') + self.assertMessagesCM('assertWarnsRegex', (UserWarning, 'regex'), + raise_wrong_message, + ['^"regex" does not match "foo"$', '^oops$', + '^"regex" does not match "foo"$', + '^"regex" does not match "foo" : oops$']) |