1 import datetime
2 import warnings
3 import weakref
4 import unittest
5 from test.support import gc_collect
6 from itertools import product
7
8
9 class ESC[4;38;5;81mTest_Assertions(ESC[4;38;5;149munittestESC[4;38;5;149m.ESC[4;38;5;149mTestCase):
10 def test_AlmostEqual(self):
11 self.assertAlmostEqual(1.00000001, 1.0)
12 self.assertNotAlmostEqual(1.0000001, 1.0)
13 self.assertRaises(self.failureException,
14 self.assertAlmostEqual, 1.0000001, 1.0)
15 self.assertRaises(self.failureException,
16 self.assertNotAlmostEqual, 1.00000001, 1.0)
17
18 self.assertAlmostEqual(1.1, 1.0, places=0)
19 self.assertRaises(self.failureException,
20 self.assertAlmostEqual, 1.1, 1.0, places=1)
21
22 self.assertAlmostEqual(0, .1+.1j, places=0)
23 self.assertNotAlmostEqual(0, .1+.1j, places=1)
24 self.assertRaises(self.failureException,
25 self.assertAlmostEqual, 0, .1+.1j, places=1)
26 self.assertRaises(self.failureException,
27 self.assertNotAlmostEqual, 0, .1+.1j, places=0)
28
29 self.assertAlmostEqual(float('inf'), float('inf'))
30 self.assertRaises(self.failureException, self.assertNotAlmostEqual,
31 float('inf'), float('inf'))
32
33 def test_AmostEqualWithDelta(self):
34 self.assertAlmostEqual(1.1, 1.0, delta=0.5)
35 self.assertAlmostEqual(1.0, 1.1, delta=0.5)
36 self.assertNotAlmostEqual(1.1, 1.0, delta=0.05)
37 self.assertNotAlmostEqual(1.0, 1.1, delta=0.05)
38
39 self.assertAlmostEqual(1.0, 1.0, delta=0.5)
40 self.assertRaises(self.failureException, self.assertNotAlmostEqual,
41 1.0, 1.0, delta=0.5)
42
43 self.assertRaises(self.failureException, self.assertAlmostEqual,
44 1.1, 1.0, delta=0.05)
45 self.assertRaises(self.failureException, self.assertNotAlmostEqual,
46 1.1, 1.0, delta=0.5)
47
48 self.assertRaises(TypeError, self.assertAlmostEqual,
49 1.1, 1.0, places=2, delta=2)
50 self.assertRaises(TypeError, self.assertNotAlmostEqual,
51 1.1, 1.0, places=2, delta=2)
52
53 first = datetime.datetime.now()
54 second = first + datetime.timedelta(seconds=10)
55 self.assertAlmostEqual(first, second,
56 delta=datetime.timedelta(seconds=20))
57 self.assertNotAlmostEqual(first, second,
58 delta=datetime.timedelta(seconds=5))
59
60 def test_assertRaises(self):
61 def _raise(e):
62 raise e
63 self.assertRaises(KeyError, _raise, KeyError)
64 self.assertRaises(KeyError, _raise, KeyError("key"))
65 try:
66 self.assertRaises(KeyError, lambda: None)
67 except self.failureException as e:
68 self.assertIn("KeyError not raised", str(e))
69 else:
70 self.fail("assertRaises() didn't fail")
71 try:
72 self.assertRaises(KeyError, _raise, ValueError)
73 except ValueError:
74 pass
75 else:
76 self.fail("assertRaises() didn't let exception pass through")
77 with self.assertRaises(KeyError) as cm:
78 try:
79 raise KeyError
80 except Exception as e:
81 exc = e
82 raise
83 self.assertIs(cm.exception, exc)
84
85 with self.assertRaises(KeyError):
86 raise KeyError("key")
87 try:
88 with self.assertRaises(KeyError):
89 pass
90 except self.failureException as e:
91 self.assertIn("KeyError not raised", str(e))
92 else:
93 self.fail("assertRaises() didn't fail")
94 try:
95 with self.assertRaises(KeyError):
96 raise ValueError
97 except ValueError:
98 pass
99 else:
100 self.fail("assertRaises() didn't let exception pass through")
101
102 def test_assertRaises_frames_survival(self):
103 # Issue #9815: assertRaises should avoid keeping local variables
104 # in a traceback alive.
105 class ESC[4;38;5;81mA:
106 pass
107 wr = None
108
109 class ESC[4;38;5;81mFoo(ESC[4;38;5;149munittestESC[4;38;5;149m.ESC[4;38;5;149mTestCase):
110
111 def foo(self):
112 nonlocal wr
113 a = A()
114 wr = weakref.ref(a)
115 try:
116 raise OSError
117 except OSError:
118 raise ValueError
119
120 def test_functional(self):
121 self.assertRaises(ValueError, self.foo)
122
123 def test_with(self):
124 with self.assertRaises(ValueError):
125 self.foo()
126
127 Foo("test_functional").run()
128 gc_collect() # For PyPy or other GCs.
129 self.assertIsNone(wr())
130 Foo("test_with").run()
131 gc_collect() # For PyPy or other GCs.
132 self.assertIsNone(wr())
133
134 def testAssertNotRegex(self):
135 self.assertNotRegex('Ala ma kota', r'r+')
136 try:
137 self.assertNotRegex('Ala ma kota', r'k.t', 'Message')
138 except self.failureException as e:
139 self.assertIn('Message', e.args[0])
140 else:
141 self.fail('assertNotRegex should have failed.')
142
143
144 class ESC[4;38;5;81mTestLongMessage(ESC[4;38;5;149munittestESC[4;38;5;149m.ESC[4;38;5;149mTestCase):
145 """Test that the individual asserts honour longMessage.
146 This actually tests all the message behaviour for
147 asserts that use longMessage."""
148
149 def setUp(self):
150 class ESC[4;38;5;81mTestableTestFalse(ESC[4;38;5;149munittestESC[4;38;5;149m.ESC[4;38;5;149mTestCase):
151 longMessage = False
152 failureException = self.failureException
153
154 def testTest(self):
155 pass
156
157 class ESC[4;38;5;81mTestableTestTrue(ESC[4;38;5;149munittestESC[4;38;5;149m.ESC[4;38;5;149mTestCase):
158 longMessage = True
159 failureException = self.failureException
160
161 def testTest(self):
162 pass
163
164 self.testableTrue = TestableTestTrue('testTest')
165 self.testableFalse = TestableTestFalse('testTest')
166
167 def testDefault(self):
168 self.assertTrue(unittest.TestCase.longMessage)
169
170 def test_formatMsg(self):
171 self.assertEqual(self.testableFalse._formatMessage(None, "foo"), "foo")
172 self.assertEqual(self.testableFalse._formatMessage("foo", "bar"), "foo")
173
174 self.assertEqual(self.testableTrue._formatMessage(None, "foo"), "foo")
175 self.assertEqual(self.testableTrue._formatMessage("foo", "bar"), "bar : foo")
176
177 # This blows up if _formatMessage uses string concatenation
178 self.testableTrue._formatMessage(object(), 'foo')
179
180 def test_formatMessage_unicode_error(self):
181 one = ''.join(chr(i) for i in range(255))
182 # this used to cause a UnicodeDecodeError constructing msg
183 self.testableTrue._formatMessage(one, '\uFFFD')
184
185 def assertMessages(self, methodName, args, errors):
186 """
187 Check that methodName(*args) raises the correct error messages.
188 errors should be a list of 4 regex that match the error when:
189 1) longMessage = False and no msg passed;
190 2) longMessage = False and msg passed;
191 3) longMessage = True and no msg passed;
192 4) longMessage = True and msg passed;
193 """
194 def getMethod(i):
195 useTestableFalse = i < 2
196 if useTestableFalse:
197 test = self.testableFalse
198 else:
199 test = self.testableTrue
200 return getattr(test, methodName)
201
202 for i, expected_regex in enumerate(errors):
203 testMethod = getMethod(i)
204 kwargs = {}
205 withMsg = i % 2
206 if withMsg:
207 kwargs = {"msg": "oops"}
208
209 with self.assertRaisesRegex(self.failureException,
210 expected_regex=expected_regex):
211 testMethod(*args, **kwargs)
212
213 def testAssertTrue(self):
214 self.assertMessages('assertTrue', (False,),
215 ["^False is not true$", "^oops$", "^False is not true$",
216 "^False is not true : oops$"])
217
218 def testAssertFalse(self):
219 self.assertMessages('assertFalse', (True,),
220 ["^True is not false$", "^oops$", "^True is not false$",
221 "^True is not false : oops$"])
222
223 def testNotEqual(self):
224 self.assertMessages('assertNotEqual', (1, 1),
225 ["^1 == 1$", "^oops$", "^1 == 1$",
226 "^1 == 1 : oops$"])
227
228 def testAlmostEqual(self):
229 self.assertMessages(
230 'assertAlmostEqual', (1, 2),
231 [r"^1 != 2 within 7 places \(1 difference\)$", "^oops$",
232 r"^1 != 2 within 7 places \(1 difference\)$",
233 r"^1 != 2 within 7 places \(1 difference\) : oops$"])
234
235 def testNotAlmostEqual(self):
236 self.assertMessages('assertNotAlmostEqual', (1, 1),
237 ["^1 == 1 within 7 places$", "^oops$",
238 "^1 == 1 within 7 places$", "^1 == 1 within 7 places : oops$"])
239
240 def test_baseAssertEqual(self):
241 self.assertMessages('_baseAssertEqual', (1, 2),
242 ["^1 != 2$", "^oops$", "^1 != 2$", "^1 != 2 : oops$"])
243
244 def testAssertSequenceEqual(self):
245 # Error messages are multiline so not testing on full message
246 # assertTupleEqual and assertListEqual delegate to this method
247 self.assertMessages('assertSequenceEqual', ([], [None]),
248 [r"\+ \[None\]$", "^oops$", r"\+ \[None\]$",
249 r"\+ \[None\] : oops$"])
250
251 def testAssertSetEqual(self):
252 self.assertMessages('assertSetEqual', (set(), set([None])),
253 ["None$", "^oops$", "None$",
254 "None : oops$"])
255
256 def testAssertIn(self):
257 self.assertMessages('assertIn', (None, []),
258 [r'^None not found in \[\]$', "^oops$",
259 r'^None not found in \[\]$',
260 r'^None not found in \[\] : oops$'])
261
262 def testAssertNotIn(self):
263 self.assertMessages('assertNotIn', (None, [None]),
264 [r'^None unexpectedly found in \[None\]$', "^oops$",
265 r'^None unexpectedly found in \[None\]$',
266 r'^None unexpectedly found in \[None\] : oops$'])
267
268 def testAssertDictEqual(self):
269 self.assertMessages('assertDictEqual', ({}, {'key': 'value'}),
270 [r"\+ \{'key': 'value'\}$", "^oops$",
271 r"\+ \{'key': 'value'\}$",
272 r"\+ \{'key': 'value'\} : oops$"])
273
274 def testAssertMultiLineEqual(self):
275 self.assertMessages('assertMultiLineEqual', ("", "foo"),
276 [r"\+ foo\n$", "^oops$",
277 r"\+ foo\n$",
278 r"\+ foo\n : oops$"])
279
280 def testAssertLess(self):
281 self.assertMessages('assertLess', (2, 1),
282 ["^2 not less than 1$", "^oops$",
283 "^2 not less than 1$", "^2 not less than 1 : oops$"])
284
285 def testAssertLessEqual(self):
286 self.assertMessages('assertLessEqual', (2, 1),
287 ["^2 not less than or equal to 1$", "^oops$",
288 "^2 not less than or equal to 1$",
289 "^2 not less than or equal to 1 : oops$"])
290
291 def testAssertGreater(self):
292 self.assertMessages('assertGreater', (1, 2),
293 ["^1 not greater than 2$", "^oops$",
294 "^1 not greater than 2$",
295 "^1 not greater than 2 : oops$"])
296
297 def testAssertGreaterEqual(self):
298 self.assertMessages('assertGreaterEqual', (1, 2),
299 ["^1 not greater than or equal to 2$", "^oops$",
300 "^1 not greater than or equal to 2$",
301 "^1 not greater than or equal to 2 : oops$"])
302
303 def testAssertIsNone(self):
304 self.assertMessages('assertIsNone', ('not None',),
305 ["^'not None' is not None$", "^oops$",
306 "^'not None' is not None$",
307 "^'not None' is not None : oops$"])
308
309 def testAssertIsNotNone(self):
310 self.assertMessages('assertIsNotNone', (None,),
311 ["^unexpectedly None$", "^oops$",
312 "^unexpectedly None$",
313 "^unexpectedly None : oops$"])
314
315 def testAssertIs(self):
316 self.assertMessages('assertIs', (None, 'foo'),
317 ["^None is not 'foo'$", "^oops$",
318 "^None is not 'foo'$",
319 "^None is not 'foo' : oops$"])
320
321 def testAssertIsNot(self):
322 self.assertMessages('assertIsNot', (None, None),
323 ["^unexpectedly identical: None$", "^oops$",
324 "^unexpectedly identical: None$",
325 "^unexpectedly identical: None : oops$"])
326
327 def testAssertRegex(self):
328 self.assertMessages('assertRegex', ('foo', 'bar'),
329 ["^Regex didn't match:",
330 "^oops$",
331 "^Regex didn't match:",
332 "^Regex didn't match: (.*) : oops$"])
333
334 def testAssertNotRegex(self):
335 self.assertMessages('assertNotRegex', ('foo', 'foo'),
336 ["^Regex matched:",
337 "^oops$",
338 "^Regex matched:",
339 "^Regex matched: (.*) : oops$"])
340
341
342 def assertMessagesCM(self, methodName, args, func, errors):
343 """
344 Check that the correct error messages are raised while executing:
345 with method(*args):
346 func()
347 *errors* should be a list of 4 regex that match the error when:
348 1) longMessage = False and no msg passed;
349 2) longMessage = False and msg passed;
350 3) longMessage = True and no msg passed;
351 4) longMessage = True and msg passed;
352 """
353 p = product((self.testableFalse, self.testableTrue),
354 ({}, {"msg": "oops"}))
355 for (cls, kwargs), err in zip(p, errors):
356 method = getattr(cls, methodName)
357 with self.assertRaisesRegex(cls.failureException, err):
358 with method(*args, **kwargs) as cm:
359 func()
360
361 def testAssertRaises(self):
362 self.assertMessagesCM('assertRaises', (TypeError,), lambda: None,
363 ['^TypeError not raised$', '^oops$',
364 '^TypeError not raised$',
365 '^TypeError not raised : oops$'])
366
367 def testAssertRaisesRegex(self):
368 # test error not raised
369 self.assertMessagesCM('assertRaisesRegex', (TypeError, 'unused regex'),
370 lambda: None,
371 ['^TypeError not raised$', '^oops$',
372 '^TypeError not raised$',
373 '^TypeError not raised : oops$'])
374 # test error raised but with wrong message
375 def raise_wrong_message():
376 raise TypeError('foo')
377 self.assertMessagesCM('assertRaisesRegex', (TypeError, 'regex'),
378 raise_wrong_message,
379 ['^"regex" does not match "foo"$', '^oops$',
380 '^"regex" does not match "foo"$',
381 '^"regex" does not match "foo" : oops$'])
382
383 def testAssertWarns(self):
384 self.assertMessagesCM('assertWarns', (UserWarning,), lambda: None,
385 ['^UserWarning not triggered$', '^oops$',
386 '^UserWarning not triggered$',
387 '^UserWarning not triggered : oops$'])
388
389 def testAssertWarnsRegex(self):
390 # test error not raised
391 self.assertMessagesCM('assertWarnsRegex', (UserWarning, 'unused regex'),
392 lambda: None,
393 ['^UserWarning not triggered$', '^oops$',
394 '^UserWarning not triggered$',
395 '^UserWarning not triggered : oops$'])
396 # test warning raised but with wrong message
397 def raise_wrong_message():
398 warnings.warn('foo')
399 self.assertMessagesCM('assertWarnsRegex', (UserWarning, 'regex'),
400 raise_wrong_message,
401 ['^"regex" does not match "foo"$', '^oops$',
402 '^"regex" does not match "foo"$',
403 '^"regex" does not match "foo" : oops$'])
404
405
406 if __name__ == "__main__":
407 unittest.main()