contents of IPython/testing/_paramtestpy2.py
at revision 1265 (original) (raw)
| 1102.1.131 Added test support for better parametric tests and nose fixes. | 1 | """Implementation of the parametric test support for Python 2.x |
|---|---|---|
| 2 | """ | |
| 1102.1.246 by Brian Granger Work to address the review comments on Fernando's branch. | 3 | |
| 4 | #----------------------------------------------------------------------------- | |
| 5 | # Copyright (C) 2009 The IPython Development Team | |
| 6 | # | |
| 7 | # Distributed under the terms of the BSD License. The full license is in | |
| 8 | # the file COPYING, distributed as part of this software. | |
| 9 | #----------------------------------------------------------------------------- | |
| 10 | ||
| 1102.1.131 by Fernando Perez Added test support for better parametric tests and nose fixes. | 11 | #----------------------------------------------------------------------------- |
| 12 | # Imports | |
| 13 | #----------------------------------------------------------------------------- | |
| 14 | ||
| 15 | import unittest | |
| 16 | from compiler.consts import CO_GENERATOR | |
| 17 | ||
| 18 | #----------------------------------------------------------------------------- | |
| 19 | # Classes and functions | |
| 20 | #----------------------------------------------------------------------------- | |
| 21 | ||
| 22 | def isgenerator(func): | |
| 23 | try: | |
| 24 | return func.func_code.co_flags & CO_GENERATOR != 0 | |
| 25 | except AttributeError: | |
| 26 | return False | |
| 27 | ||
| 28 | class ParametricTestCase(unittest.TestCase): | |
| 29 | """Write parametric tests in normal unittest testcase form. | |
| 30 | ||
| 31 | Limitations: the last iteration misses printing out a newline when running | |
| 32 | in verbose mode. | |
| 33 | """ | |
| 34 | def run_parametric(self, result, testMethod): | |
| 35 | # But if we have a test generator, we iterate it ourselves | |
| 36 | testgen = testMethod() | |
| 37 | while True: | |
| 38 | try: | |
| 39 | # Initialize test | |
| 40 | result.startTest(self) | |
| 41 | ||
| 42 | # SetUp | |
| 43 | try: | |
| 44 | self.setUp() | |
| 45 | except KeyboardInterrupt: | |
| 46 | raise | |
| 47 | except: | |
| 48 | result.addError(self, self._exc_info()) | |
| 49 | return | |
| 50 | # Test execution | |
| 51 | ok = False | |
| 52 | try: | |
| 53 | testgen.next() | |
| 54 | ok = True | |
| 55 | except StopIteration: | |
| 56 | # We stop the loop | |
| 57 | break | |
| 58 | except self.failureException: | |
| 59 | result.addFailure(self, self._exc_info()) | |
| 60 | except KeyboardInterrupt: | |
| 61 | raise | |
| 62 | except: | |
| 63 | result.addError(self, self._exc_info()) | |
| 64 | # TearDown | |
| 65 | try: | |
| 66 | self.tearDown() | |
| 67 | except KeyboardInterrupt: | |
| 68 | raise | |
| 69 | except: | |
| 70 | result.addError(self, self._exc_info()) | |
| 71 | ok = False | |
| 72 | if ok: result.addSuccess(self) | |
| 73 | ||
| 74 | finally: | |
| 75 | result.stopTest(self) | |
| 76 | ||
| 77 | def run(self, result=None): | |
| 78 | if result is None: | |
| 79 | result = self.defaultTestResult() | |
| 80 | testMethod = getattr(self, self._testMethodName) | |
| 81 | # For normal tests, we just call the base class and return that | |
| 82 | if isgenerator(testMethod): | |
| 83 | return self.run_parametric(result, testMethod) | |
| 84 | else: | |
| 85 | return super(ParametricTestCase, self).run(result) | |
| 86 | ||
| 87 | ||
| 88 | def parametric(func): | |
| 89 | """Decorator to make a simple function into a normal test via unittest.""" | |
| 90 | ||
| 91 | class Tester(ParametricTestCase): | |
| 92 | test = staticmethod(func) | |
| 93 | ||
| 94 | Tester.__name__ = func.__name__ | |
| 95 | ||
| 96 | return Tester |