test_setups.py 16 KB
Newer Older
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113
import io
import sys

import unittest


def resultFactory(*_):
    return unittest.TestResult()


class TestSetups(unittest.TestCase):

    def getRunner(self):
        return unittest.TextTestRunner(resultclass=resultFactory,
                                          stream=io.StringIO())
    def runTests(self, *cases):
        suite = unittest.TestSuite()
        for case in cases:
            tests = unittest.defaultTestLoader.loadTestsFromTestCase(case)
            suite.addTests(tests)

        runner = self.getRunner()

        # creating a nested suite exposes some potential bugs
        realSuite = unittest.TestSuite()
        realSuite.addTest(suite)
        # adding empty suites to the end exposes potential bugs
        suite.addTest(unittest.TestSuite())
        realSuite.addTest(unittest.TestSuite())
        return runner.run(realSuite)

    def test_setup_class(self):
        class Test(unittest.TestCase):
            setUpCalled = 0
            @classmethod
            def setUpClass(cls):
                Test.setUpCalled += 1
                unittest.TestCase.setUpClass()
            def test_one(self):
                pass
            def test_two(self):
                pass

        result = self.runTests(Test)

        self.assertEqual(Test.setUpCalled, 1)
        self.assertEqual(result.testsRun, 2)
        self.assertEqual(len(result.errors), 0)

    def test_teardown_class(self):
        class Test(unittest.TestCase):
            tearDownCalled = 0
            @classmethod
            def tearDownClass(cls):
                Test.tearDownCalled += 1
                unittest.TestCase.tearDownClass()
            def test_one(self):
                pass
            def test_two(self):
                pass

        result = self.runTests(Test)

        self.assertEqual(Test.tearDownCalled, 1)
        self.assertEqual(result.testsRun, 2)
        self.assertEqual(len(result.errors), 0)

    def test_teardown_class_two_classes(self):
        class Test(unittest.TestCase):
            tearDownCalled = 0
            @classmethod
            def tearDownClass(cls):
                Test.tearDownCalled += 1
                unittest.TestCase.tearDownClass()
            def test_one(self):
                pass
            def test_two(self):
                pass

        class Test2(unittest.TestCase):
            tearDownCalled = 0
            @classmethod
            def tearDownClass(cls):
                Test2.tearDownCalled += 1
                unittest.TestCase.tearDownClass()
            def test_one(self):
                pass
            def test_two(self):
                pass

        result = self.runTests(Test, Test2)

        self.assertEqual(Test.tearDownCalled, 1)
        self.assertEqual(Test2.tearDownCalled, 1)
        self.assertEqual(result.testsRun, 4)
        self.assertEqual(len(result.errors), 0)

    def test_error_in_setupclass(self):
        class BrokenTest(unittest.TestCase):
            @classmethod
            def setUpClass(cls):
                raise TypeError('foo')
            def test_one(self):
                pass
            def test_two(self):
                pass

        result = self.runTests(BrokenTest)

        self.assertEqual(result.testsRun, 0)
        self.assertEqual(len(result.errors), 1)
        error, _ = result.errors[0]
        self.assertEqual(str(error),
114
                    'setUpClass (%s.BrokenTest)' % __name__)
115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146

    def test_error_in_teardown_class(self):
        class Test(unittest.TestCase):
            tornDown = 0
            @classmethod
            def tearDownClass(cls):
                Test.tornDown += 1
                raise TypeError('foo')
            def test_one(self):
                pass
            def test_two(self):
                pass

        class Test2(unittest.TestCase):
            tornDown = 0
            @classmethod
            def tearDownClass(cls):
                Test2.tornDown += 1
                raise TypeError('foo')
            def test_one(self):
                pass
            def test_two(self):
                pass

        result = self.runTests(Test, Test2)
        self.assertEqual(result.testsRun, 4)
        self.assertEqual(len(result.errors), 2)
        self.assertEqual(Test.tornDown, 1)
        self.assertEqual(Test2.tornDown, 1)

        error, _ = result.errors[0]
        self.assertEqual(str(error),
147
                    'tearDownClass (%s.Test)' % __name__)
148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 322 323 324 325 326 327 328 329 330 331 332 333 334 335 336 337 338 339 340 341 342 343 344 345 346 347 348 349 350 351 352 353 354 355 356 357 358 359 360 361 362 363 364 365 366 367 368 369 370 371 372 373 374 375 376 377 378 379 380 381 382 383 384 385 386 387 388 389 390 391 392 393 394 395 396 397 398 399 400

    def test_class_not_torndown_when_setup_fails(self):
        class Test(unittest.TestCase):
            tornDown = False
            @classmethod
            def setUpClass(cls):
                raise TypeError
            @classmethod
            def tearDownClass(cls):
                Test.tornDown = True
                raise TypeError('foo')
            def test_one(self):
                pass

        self.runTests(Test)
        self.assertFalse(Test.tornDown)

    def test_class_not_setup_or_torndown_when_skipped(self):
        class Test(unittest.TestCase):
            classSetUp = False
            tornDown = False
            @classmethod
            def setUpClass(cls):
                Test.classSetUp = True
            @classmethod
            def tearDownClass(cls):
                Test.tornDown = True
            def test_one(self):
                pass

        Test = unittest.skip("hop")(Test)
        self.runTests(Test)
        self.assertFalse(Test.classSetUp)
        self.assertFalse(Test.tornDown)

    def test_setup_teardown_order_with_pathological_suite(self):
        results = []

        class Module1(object):
            @staticmethod
            def setUpModule():
                results.append('Module1.setUpModule')
            @staticmethod
            def tearDownModule():
                results.append('Module1.tearDownModule')

        class Module2(object):
            @staticmethod
            def setUpModule():
                results.append('Module2.setUpModule')
            @staticmethod
            def tearDownModule():
                results.append('Module2.tearDownModule')

        class Test1(unittest.TestCase):
            @classmethod
            def setUpClass(cls):
                results.append('setup 1')
            @classmethod
            def tearDownClass(cls):
                results.append('teardown 1')
            def testOne(self):
                results.append('Test1.testOne')
            def testTwo(self):
                results.append('Test1.testTwo')

        class Test2(unittest.TestCase):
            @classmethod
            def setUpClass(cls):
                results.append('setup 2')
            @classmethod
            def tearDownClass(cls):
                results.append('teardown 2')
            def testOne(self):
                results.append('Test2.testOne')
            def testTwo(self):
                results.append('Test2.testTwo')

        class Test3(unittest.TestCase):
            @classmethod
            def setUpClass(cls):
                results.append('setup 3')
            @classmethod
            def tearDownClass(cls):
                results.append('teardown 3')
            def testOne(self):
                results.append('Test3.testOne')
            def testTwo(self):
                results.append('Test3.testTwo')

        Test1.__module__ = Test2.__module__ = 'Module'
        Test3.__module__ = 'Module2'
        sys.modules['Module'] = Module1
        sys.modules['Module2'] = Module2

        first = unittest.TestSuite((Test1('testOne'),))
        second = unittest.TestSuite((Test1('testTwo'),))
        third = unittest.TestSuite((Test2('testOne'),))
        fourth = unittest.TestSuite((Test2('testTwo'),))
        fifth = unittest.TestSuite((Test3('testOne'),))
        sixth = unittest.TestSuite((Test3('testTwo'),))
        suite = unittest.TestSuite((first, second, third, fourth, fifth, sixth))

        runner = self.getRunner()
        result = runner.run(suite)
        self.assertEqual(result.testsRun, 6)
        self.assertEqual(len(result.errors), 0)

        self.assertEqual(results,
                         ['Module1.setUpModule', 'setup 1',
                          'Test1.testOne', 'Test1.testTwo', 'teardown 1',
                          'setup 2', 'Test2.testOne', 'Test2.testTwo',
                          'teardown 2', 'Module1.tearDownModule',
                          'Module2.setUpModule', 'setup 3',
                          'Test3.testOne', 'Test3.testTwo',
                          'teardown 3', 'Module2.tearDownModule'])

    def test_setup_module(self):
        class Module(object):
            moduleSetup = 0
            @staticmethod
            def setUpModule():
                Module.moduleSetup += 1

        class Test(unittest.TestCase):
            def test_one(self):
                pass
            def test_two(self):
                pass
        Test.__module__ = 'Module'
        sys.modules['Module'] = Module

        result = self.runTests(Test)
        self.assertEqual(Module.moduleSetup, 1)
        self.assertEqual(result.testsRun, 2)
        self.assertEqual(len(result.errors), 0)

    def test_error_in_setup_module(self):
        class Module(object):
            moduleSetup = 0
            moduleTornDown = 0
            @staticmethod
            def setUpModule():
                Module.moduleSetup += 1
                raise TypeError('foo')
            @staticmethod
            def tearDownModule():
                Module.moduleTornDown += 1

        class Test(unittest.TestCase):
            classSetUp = False
            classTornDown = False
            @classmethod
            def setUpClass(cls):
                Test.classSetUp = True
            @classmethod
            def tearDownClass(cls):
                Test.classTornDown = True
            def test_one(self):
                pass
            def test_two(self):
                pass

        class Test2(unittest.TestCase):
            def test_one(self):
                pass
            def test_two(self):
                pass
        Test.__module__ = 'Module'
        Test2.__module__ = 'Module'
        sys.modules['Module'] = Module

        result = self.runTests(Test, Test2)
        self.assertEqual(Module.moduleSetup, 1)
        self.assertEqual(Module.moduleTornDown, 0)
        self.assertEqual(result.testsRun, 0)
        self.assertFalse(Test.classSetUp)
        self.assertFalse(Test.classTornDown)
        self.assertEqual(len(result.errors), 1)
        error, _ = result.errors[0]
        self.assertEqual(str(error), 'setUpModule (Module)')

    def test_testcase_with_missing_module(self):
        class Test(unittest.TestCase):
            def test_one(self):
                pass
            def test_two(self):
                pass
        Test.__module__ = 'Module'
        sys.modules.pop('Module', None)

        result = self.runTests(Test)
        self.assertEqual(result.testsRun, 2)

    def test_teardown_module(self):
        class Module(object):
            moduleTornDown = 0
            @staticmethod
            def tearDownModule():
                Module.moduleTornDown += 1

        class Test(unittest.TestCase):
            def test_one(self):
                pass
            def test_two(self):
                pass
        Test.__module__ = 'Module'
        sys.modules['Module'] = Module

        result = self.runTests(Test)
        self.assertEqual(Module.moduleTornDown, 1)
        self.assertEqual(result.testsRun, 2)
        self.assertEqual(len(result.errors), 0)

    def test_error_in_teardown_module(self):
        class Module(object):
            moduleTornDown = 0
            @staticmethod
            def tearDownModule():
                Module.moduleTornDown += 1
                raise TypeError('foo')

        class Test(unittest.TestCase):
            classSetUp = False
            classTornDown = False
            @classmethod
            def setUpClass(cls):
                Test.classSetUp = True
            @classmethod
            def tearDownClass(cls):
                Test.classTornDown = True
            def test_one(self):
                pass
            def test_two(self):
                pass

        class Test2(unittest.TestCase):
            def test_one(self):
                pass
            def test_two(self):
                pass
        Test.__module__ = 'Module'
        Test2.__module__ = 'Module'
        sys.modules['Module'] = Module

        result = self.runTests(Test, Test2)
        self.assertEqual(Module.moduleTornDown, 1)
        self.assertEqual(result.testsRun, 4)
        self.assertTrue(Test.classSetUp)
        self.assertTrue(Test.classTornDown)
        self.assertEqual(len(result.errors), 1)
        error, _ = result.errors[0]
        self.assertEqual(str(error), 'tearDownModule (Module)')
401 402 403 404 405 406 407 408 409 410 411 412 413 414 415 416 417 418 419 420 421 422 423 424 425 426 427 428 429 430 431 432 433 434 435 436 437 438 439 440

    def test_skiptest_in_setupclass(self):
        class Test(unittest.TestCase):
            @classmethod
            def setUpClass(cls):
                raise unittest.SkipTest('foo')
            def test_one(self):
                pass
            def test_two(self):
                pass

        result = self.runTests(Test)
        self.assertEqual(result.testsRun, 0)
        self.assertEqual(len(result.errors), 0)
        self.assertEqual(len(result.skipped), 1)
        skipped = result.skipped[0][0]
        self.assertEqual(str(skipped), 'setUpClass (%s.Test)' % __name__)

    def test_skiptest_in_setupmodule(self):
        class Test(unittest.TestCase):
            def test_one(self):
                pass
            def test_two(self):
                pass

        class Module(object):
            @staticmethod
            def setUpModule():
                raise unittest.SkipTest('foo')

        Test.__module__ = 'Module'
        sys.modules['Module'] = Module

        result = self.runTests(Test)
        self.assertEqual(result.testsRun, 0)
        self.assertEqual(len(result.errors), 0)
        self.assertEqual(len(result.skipped), 1)
        skipped = result.skipped[0][0]
        self.assertEqual(str(skipped), 'setUpModule (Module)')

441 442 443 444 445 446 447 448 449 450 451 452 453 454 455 456 457 458 459 460 461 462 463 464 465 466 467 468 469 470 471 472 473 474 475 476 477 478 479 480 481 482 483 484 485 486 487 488 489 490 491 492 493 494 495 496 497 498
    def test_suite_debug_executes_setups_and_teardowns(self):
        ordering = []

        class Module(object):
            @staticmethod
            def setUpModule():
                ordering.append('setUpModule')
            @staticmethod
            def tearDownModule():
                ordering.append('tearDownModule')

        class Test(unittest.TestCase):
            @classmethod
            def setUpClass(cls):
                ordering.append('setUpClass')
            @classmethod
            def tearDownClass(cls):
                ordering.append('tearDownClass')
            def test_something(self):
                ordering.append('test_something')

        Test.__module__ = 'Module'
        sys.modules['Module'] = Module

        suite = unittest.defaultTestLoader.loadTestsFromTestCase(Test)
        suite.debug()
        expectedOrder = ['setUpModule', 'setUpClass', 'test_something', 'tearDownClass', 'tearDownModule']
        self.assertEqual(ordering, expectedOrder)

    def test_suite_debug_propagates_exceptions(self):
        class Module(object):
            @staticmethod
            def setUpModule():
                if phase == 0:
                    raise Exception('setUpModule')
            @staticmethod
            def tearDownModule():
                if phase == 1:
                    raise Exception('tearDownModule')

        class Test(unittest.TestCase):
            @classmethod
            def setUpClass(cls):
                if phase == 2:
                    raise Exception('setUpClass')
            @classmethod
            def tearDownClass(cls):
                if phase == 3:
                    raise Exception('tearDownClass')
            def test_something(self):
                if phase == 4:
                    raise Exception('test_something')

        Test.__module__ = 'Module'
        sys.modules['Module'] = Module

        messages = ('setUpModule', 'tearDownModule', 'setUpClass', 'tearDownClass', 'test_something')
        for phase, msg in enumerate(messages):
499 500
            _suite = unittest.defaultTestLoader.loadTestsFromTestCase(Test)
            suite = unittest.TestSuite([_suite])
501
            with self.assertRaisesRegex(Exception, msg):
502
                suite.debug()
503

504

505 506
if __name__ == '__main__':
    unittest.main()