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# encoding: utf-8
import unittest
import warnings
from hamcrest.core.assert_that import assert_that
from hamcrest.core.core.isequal import equal_to
def u(x):
return x
__author__ = "Jon Reid"
__copyright__ = "Copyright 2011 hamcrest.org"
__license__ = "BSD, see License.txt"
class AssertThatTest(unittest.TestCase):
def testShouldBeSilentOnSuccessfulMatch(self):
assert_that(1, equal_to(1))
def testAssertionErrorShouldDescribeExpectedAndActual(self):
expected = "EXPECTED"
actual = "ACTUAL"
expectedMessage = "\nExpected: 'EXPECTED'\n but: was 'ACTUAL'\n"
with self.assertRaises(AssertionError) as e:
assert_that(actual, equal_to(expected))
self.assertEqual(expectedMessage, str(e.exception))
def testAssertionErrorShouldIncludeOptionalReason(self):
expected = "EXPECTED"
actual = "ACTUAL"
expectedMessage = "REASON\nExpected: 'EXPECTED'\n but: was 'ACTUAL'\n"
with self.assertRaises(AssertionError) as e:
assert_that(actual, equal_to(expected), "REASON")
self.assertEqual(expectedMessage, str(e.exception))
def testAssertionUnicodeEncodesProperly(self):
expected = "EXPECTED"
actual = u("\xdcnic\N{Latin Small Letter O with diaeresis}de")
with self.assertRaises(AssertionError):
assert_that(actual, equal_to(expected), "REASON")
def testCanTestBoolDirectly(self):
assert_that(True, "should accept True")
with self.assertRaises(AssertionError) as e:
assert_that(False, "FAILURE REASON")
self.assertEqual("FAILURE REASON", str(e.exception))
def testCanTestBoolDirectlyWithoutReason(self):
assert_that(True)
with self.assertRaises(AssertionError) as e:
assert_that(False)
self.assertEqual("Assertion failed", str(e.exception))
def testWarnsForMatcherAsArg1(self):
assert_that(True)
with warnings.catch_warnings(record=True) as w:
warnings.simplefilter("always")
assert_that(equal_to(1))
self.assertEqual(len(w), 1)
self.assertTrue("arg1 should be boolean" in str(w[-1].message))
if __name__ == "__main__":
unittest.main()
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