mirror of
https://github.com/python/cpython.git
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b50322d203
Revert "bpo-45162: Remove many old deprecated unittest features (GH-28268)"
This reverts commit b0a6ede3d0.
We're deferring this change until 3.12 while upstream projects that use
the legacy assertion method names are fixed. See the issue for links
to the discussion. Many upstream projects now have issues and PRs
filed.
416 lines
17 KiB
Python
416 lines
17 KiB
Python
import datetime
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import warnings
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import weakref
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import unittest
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from test.support import gc_collect
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from itertools import product
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class Test_Assertions(unittest.TestCase):
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def test_AlmostEqual(self):
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self.assertAlmostEqual(1.00000001, 1.0)
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self.assertNotAlmostEqual(1.0000001, 1.0)
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self.assertRaises(self.failureException,
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self.assertAlmostEqual, 1.0000001, 1.0)
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self.assertRaises(self.failureException,
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self.assertNotAlmostEqual, 1.00000001, 1.0)
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self.assertAlmostEqual(1.1, 1.0, places=0)
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self.assertRaises(self.failureException,
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self.assertAlmostEqual, 1.1, 1.0, places=1)
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self.assertAlmostEqual(0, .1+.1j, places=0)
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self.assertNotAlmostEqual(0, .1+.1j, places=1)
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self.assertRaises(self.failureException,
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self.assertAlmostEqual, 0, .1+.1j, places=1)
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self.assertRaises(self.failureException,
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self.assertNotAlmostEqual, 0, .1+.1j, places=0)
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self.assertAlmostEqual(float('inf'), float('inf'))
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self.assertRaises(self.failureException, self.assertNotAlmostEqual,
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float('inf'), float('inf'))
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def test_AmostEqualWithDelta(self):
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self.assertAlmostEqual(1.1, 1.0, delta=0.5)
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self.assertAlmostEqual(1.0, 1.1, delta=0.5)
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self.assertNotAlmostEqual(1.1, 1.0, delta=0.05)
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self.assertNotAlmostEqual(1.0, 1.1, delta=0.05)
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self.assertAlmostEqual(1.0, 1.0, delta=0.5)
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self.assertRaises(self.failureException, self.assertNotAlmostEqual,
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1.0, 1.0, delta=0.5)
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self.assertRaises(self.failureException, self.assertAlmostEqual,
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1.1, 1.0, delta=0.05)
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self.assertRaises(self.failureException, self.assertNotAlmostEqual,
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1.1, 1.0, delta=0.5)
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self.assertRaises(TypeError, self.assertAlmostEqual,
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1.1, 1.0, places=2, delta=2)
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self.assertRaises(TypeError, self.assertNotAlmostEqual,
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1.1, 1.0, places=2, delta=2)
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first = datetime.datetime.now()
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second = first + datetime.timedelta(seconds=10)
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self.assertAlmostEqual(first, second,
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delta=datetime.timedelta(seconds=20))
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self.assertNotAlmostEqual(first, second,
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delta=datetime.timedelta(seconds=5))
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def test_assertRaises(self):
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def _raise(e):
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raise e
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self.assertRaises(KeyError, _raise, KeyError)
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self.assertRaises(KeyError, _raise, KeyError("key"))
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try:
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self.assertRaises(KeyError, lambda: None)
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except self.failureException as e:
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self.assertIn("KeyError not raised", str(e))
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else:
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self.fail("assertRaises() didn't fail")
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try:
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self.assertRaises(KeyError, _raise, ValueError)
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except ValueError:
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pass
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else:
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self.fail("assertRaises() didn't let exception pass through")
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with self.assertRaises(KeyError) as cm:
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try:
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raise KeyError
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except Exception as e:
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exc = e
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raise
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self.assertIs(cm.exception, exc)
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with self.assertRaises(KeyError):
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raise KeyError("key")
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try:
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with self.assertRaises(KeyError):
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pass
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except self.failureException as e:
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self.assertIn("KeyError not raised", str(e))
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else:
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self.fail("assertRaises() didn't fail")
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try:
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with self.assertRaises(KeyError):
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raise ValueError
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except ValueError:
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pass
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else:
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self.fail("assertRaises() didn't let exception pass through")
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def test_assertRaises_frames_survival(self):
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# Issue #9815: assertRaises should avoid keeping local variables
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# in a traceback alive.
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class A:
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pass
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wr = None
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class Foo(unittest.TestCase):
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def foo(self):
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nonlocal wr
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a = A()
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wr = weakref.ref(a)
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try:
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raise OSError
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except OSError:
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raise ValueError
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def test_functional(self):
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self.assertRaises(ValueError, self.foo)
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def test_with(self):
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with self.assertRaises(ValueError):
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self.foo()
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Foo("test_functional").run()
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gc_collect() # For PyPy or other GCs.
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self.assertIsNone(wr())
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Foo("test_with").run()
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gc_collect() # For PyPy or other GCs.
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self.assertIsNone(wr())
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def testAssertNotRegex(self):
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self.assertNotRegex('Ala ma kota', r'r+')
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try:
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self.assertNotRegex('Ala ma kota', r'k.t', 'Message')
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except self.failureException as e:
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self.assertIn('Message', e.args[0])
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else:
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self.fail('assertNotRegex should have failed.')
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class TestLongMessage(unittest.TestCase):
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"""Test that the individual asserts honour longMessage.
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This actually tests all the message behaviour for
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asserts that use longMessage."""
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def setUp(self):
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class TestableTestFalse(unittest.TestCase):
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longMessage = False
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failureException = self.failureException
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def testTest(self):
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pass
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class TestableTestTrue(unittest.TestCase):
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longMessage = True
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failureException = self.failureException
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def testTest(self):
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pass
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self.testableTrue = TestableTestTrue('testTest')
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self.testableFalse = TestableTestFalse('testTest')
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def testDefault(self):
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self.assertTrue(unittest.TestCase.longMessage)
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def test_formatMsg(self):
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self.assertEqual(self.testableFalse._formatMessage(None, "foo"), "foo")
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self.assertEqual(self.testableFalse._formatMessage("foo", "bar"), "foo")
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self.assertEqual(self.testableTrue._formatMessage(None, "foo"), "foo")
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self.assertEqual(self.testableTrue._formatMessage("foo", "bar"), "bar : foo")
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# This blows up if _formatMessage uses string concatenation
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self.testableTrue._formatMessage(object(), 'foo')
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def test_formatMessage_unicode_error(self):
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one = ''.join(chr(i) for i in range(255))
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# this used to cause a UnicodeDecodeError constructing msg
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self.testableTrue._formatMessage(one, '\uFFFD')
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def assertMessages(self, methodName, args, errors):
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"""
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Check that methodName(*args) raises the correct error messages.
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errors should be a list of 4 regex that match the error when:
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1) longMessage = False and no msg passed;
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2) longMessage = False and msg passed;
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3) longMessage = True and no msg passed;
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4) longMessage = True and msg passed;
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"""
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def getMethod(i):
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useTestableFalse = i < 2
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if useTestableFalse:
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test = self.testableFalse
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else:
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test = self.testableTrue
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return getattr(test, methodName)
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for i, expected_regex in enumerate(errors):
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testMethod = getMethod(i)
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kwargs = {}
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withMsg = i % 2
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if withMsg:
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kwargs = {"msg": "oops"}
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with self.assertRaisesRegex(self.failureException,
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expected_regex=expected_regex):
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testMethod(*args, **kwargs)
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def testAssertTrue(self):
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self.assertMessages('assertTrue', (False,),
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["^False is not true$", "^oops$", "^False is not true$",
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"^False is not true : oops$"])
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def testAssertFalse(self):
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self.assertMessages('assertFalse', (True,),
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["^True is not false$", "^oops$", "^True is not false$",
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"^True is not false : oops$"])
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def testNotEqual(self):
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self.assertMessages('assertNotEqual', (1, 1),
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["^1 == 1$", "^oops$", "^1 == 1$",
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"^1 == 1 : oops$"])
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def testAlmostEqual(self):
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self.assertMessages(
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'assertAlmostEqual', (1, 2),
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[r"^1 != 2 within 7 places \(1 difference\)$", "^oops$",
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r"^1 != 2 within 7 places \(1 difference\)$",
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r"^1 != 2 within 7 places \(1 difference\) : oops$"])
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def testNotAlmostEqual(self):
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self.assertMessages('assertNotAlmostEqual', (1, 1),
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["^1 == 1 within 7 places$", "^oops$",
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"^1 == 1 within 7 places$", "^1 == 1 within 7 places : oops$"])
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def test_baseAssertEqual(self):
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self.assertMessages('_baseAssertEqual', (1, 2),
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["^1 != 2$", "^oops$", "^1 != 2$", "^1 != 2 : oops$"])
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def testAssertSequenceEqual(self):
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# Error messages are multiline so not testing on full message
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# assertTupleEqual and assertListEqual delegate to this method
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self.assertMessages('assertSequenceEqual', ([], [None]),
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[r"\+ \[None\]$", "^oops$", r"\+ \[None\]$",
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r"\+ \[None\] : oops$"])
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def testAssertSetEqual(self):
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self.assertMessages('assertSetEqual', (set(), set([None])),
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["None$", "^oops$", "None$",
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"None : oops$"])
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def testAssertIn(self):
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self.assertMessages('assertIn', (None, []),
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[r'^None not found in \[\]$', "^oops$",
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r'^None not found in \[\]$',
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r'^None not found in \[\] : oops$'])
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def testAssertNotIn(self):
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self.assertMessages('assertNotIn', (None, [None]),
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[r'^None unexpectedly found in \[None\]$', "^oops$",
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r'^None unexpectedly found in \[None\]$',
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r'^None unexpectedly found in \[None\] : oops$'])
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def testAssertDictEqual(self):
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self.assertMessages('assertDictEqual', ({}, {'key': 'value'}),
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[r"\+ \{'key': 'value'\}$", "^oops$",
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r"\+ \{'key': 'value'\}$",
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r"\+ \{'key': 'value'\} : oops$"])
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def testAssertDictContainsSubset(self):
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with warnings.catch_warnings():
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warnings.simplefilter("ignore", DeprecationWarning)
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self.assertMessages('assertDictContainsSubset', ({'key': 'value'}, {}),
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["^Missing: 'key'$", "^oops$",
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"^Missing: 'key'$",
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"^Missing: 'key' : oops$"])
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def testAssertMultiLineEqual(self):
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self.assertMessages('assertMultiLineEqual', ("", "foo"),
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[r"\+ foo$", "^oops$",
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r"\+ foo$",
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r"\+ foo : oops$"])
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def testAssertLess(self):
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self.assertMessages('assertLess', (2, 1),
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["^2 not less than 1$", "^oops$",
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"^2 not less than 1$", "^2 not less than 1 : oops$"])
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def testAssertLessEqual(self):
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self.assertMessages('assertLessEqual', (2, 1),
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["^2 not less than or equal to 1$", "^oops$",
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"^2 not less than or equal to 1$",
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"^2 not less than or equal to 1 : oops$"])
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def testAssertGreater(self):
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self.assertMessages('assertGreater', (1, 2),
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["^1 not greater than 2$", "^oops$",
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"^1 not greater than 2$",
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"^1 not greater than 2 : oops$"])
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def testAssertGreaterEqual(self):
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self.assertMessages('assertGreaterEqual', (1, 2),
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["^1 not greater than or equal to 2$", "^oops$",
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"^1 not greater than or equal to 2$",
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"^1 not greater than or equal to 2 : oops$"])
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def testAssertIsNone(self):
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self.assertMessages('assertIsNone', ('not None',),
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["^'not None' is not None$", "^oops$",
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"^'not None' is not None$",
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"^'not None' is not None : oops$"])
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def testAssertIsNotNone(self):
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self.assertMessages('assertIsNotNone', (None,),
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["^unexpectedly None$", "^oops$",
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"^unexpectedly None$",
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"^unexpectedly None : oops$"])
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def testAssertIs(self):
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self.assertMessages('assertIs', (None, 'foo'),
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["^None is not 'foo'$", "^oops$",
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"^None is not 'foo'$",
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"^None is not 'foo' : oops$"])
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def testAssertIsNot(self):
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self.assertMessages('assertIsNot', (None, None),
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["^unexpectedly identical: None$", "^oops$",
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"^unexpectedly identical: None$",
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"^unexpectedly identical: None : oops$"])
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def testAssertRegex(self):
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self.assertMessages('assertRegex', ('foo', 'bar'),
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["^Regex didn't match:",
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"^oops$",
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"^Regex didn't match:",
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"^Regex didn't match: (.*) : oops$"])
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def testAssertNotRegex(self):
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self.assertMessages('assertNotRegex', ('foo', 'foo'),
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["^Regex matched:",
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"^oops$",
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"^Regex matched:",
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"^Regex matched: (.*) : oops$"])
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def assertMessagesCM(self, methodName, args, func, errors):
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"""
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Check that the correct error messages are raised while executing:
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with method(*args):
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func()
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*errors* should be a list of 4 regex that match the error when:
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1) longMessage = False and no msg passed;
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2) longMessage = False and msg passed;
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3) longMessage = True and no msg passed;
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4) longMessage = True and msg passed;
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"""
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p = product((self.testableFalse, self.testableTrue),
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({}, {"msg": "oops"}))
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for (cls, kwargs), err in zip(p, errors):
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method = getattr(cls, methodName)
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with self.assertRaisesRegex(cls.failureException, err):
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with method(*args, **kwargs) as cm:
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func()
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def testAssertRaises(self):
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self.assertMessagesCM('assertRaises', (TypeError,), lambda: None,
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['^TypeError not raised$', '^oops$',
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'^TypeError not raised$',
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'^TypeError not raised : oops$'])
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def testAssertRaisesRegex(self):
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# test error not raised
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self.assertMessagesCM('assertRaisesRegex', (TypeError, 'unused regex'),
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lambda: None,
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['^TypeError not raised$', '^oops$',
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'^TypeError not raised$',
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'^TypeError not raised : oops$'])
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# test error raised but with wrong message
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def raise_wrong_message():
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raise TypeError('foo')
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self.assertMessagesCM('assertRaisesRegex', (TypeError, 'regex'),
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raise_wrong_message,
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['^"regex" does not match "foo"$', '^oops$',
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'^"regex" does not match "foo"$',
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'^"regex" does not match "foo" : oops$'])
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def testAssertWarns(self):
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self.assertMessagesCM('assertWarns', (UserWarning,), lambda: None,
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['^UserWarning not triggered$', '^oops$',
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'^UserWarning not triggered$',
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'^UserWarning not triggered : oops$'])
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def testAssertWarnsRegex(self):
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# test error not raised
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self.assertMessagesCM('assertWarnsRegex', (UserWarning, 'unused regex'),
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lambda: None,
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['^UserWarning not triggered$', '^oops$',
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'^UserWarning not triggered$',
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'^UserWarning not triggered : oops$'])
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# test warning raised but with wrong message
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def raise_wrong_message():
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warnings.warn('foo')
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self.assertMessagesCM('assertWarnsRegex', (UserWarning, 'regex'),
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raise_wrong_message,
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['^"regex" does not match "foo"$', '^oops$',
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'^"regex" does not match "foo"$',
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'^"regex" does not match "foo" : oops$'])
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if __name__ == "__main__":
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unittest.main()
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