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cheatsheet do
title 'Python unittest Assertions'
docset_file_name 'Python_unittest_Assertions'
keyword 'pyassert'
source_url 'http://cheat.kapeli.com'
style '
td.description .name {
text-align:right;
white-space:nowrap;
}
th:nth-child(1) {
text-align:right;
}
'
# request headers
category do
id 'Assertions'
header 'Method'
header 'Checks that'
header 'New in'
entry do
td_notes <<-'END'
```
a == b
```
END
td_notes ''
name 'assertEqual(a, b)'
index_name 'assertEqual'
end
entry do
td_notes <<-'END'
```
a != b
```
END
td_notes ''
name 'assertNotEqual(a, b)'
index_name 'assertNotEqual'
end
entry do
td_notes <<-'END'
```
bool(x) is True
```
END
td_notes ''
name 'assertTrue(x)'
index_name 'assertTrue'
end
entry do
td_notes <<-'END'
```
bool(x) is False
```
END
td_notes ''
name 'assertFalse(x)'
index_name 'assertFalse'
end
entry do
td_notes <<-'END'
```
a is b
```
END
td_notes '2.7'
name 'assertIs(a, b)'
index_name 'assertIs'
end
entry do
td_notes <<-'END'
```
a is not b
```
END
td_notes '2.7'
name 'assertIsNot(a, b)'
index_name 'assertIsNot'
end
entry do
td_notes <<-'END'
```
x is None
```
END
td_notes '2.7'
name 'assertIsNone(x)'
index_name 'assertIsNone'
end
entry do
td_notes <<-'END'
```
x is not None
```
END
td_notes '2.7'
name 'assertIsNotNone(x)'
index_name 'assertIsNotNone'
end
entry do
td_notes <<-'END'
```
a in b
```
END
td_notes '2.7'
name 'assertIn(a, b)'
index_name 'assertIn'
end
entry do
td_notes <<-'END'
```
a not in b
```
END
td_notes '2.7'
name 'assertNotIn(a, b)'
index_name 'assertNotIn'
end
entry do
td_notes <<-'END'
```
isinstance(a, b)
```
END
td_notes '2.7'
name 'assertIsInstance(a, b)'
index_name 'assertIsInstance'
end
entry do
td_notes <<-'END'
```
not isinstnace(a, b)
```
END
td_notes '2.7'
name 'assertNotIsInstance(a, b)'
index_name 'assertNotIsInstance'
end
entry do
td_notes <<-'END'
```
fun(*args, **kwds) raises exc
```
END
td_notes ''
name 'assertRaises(exc, fun, *args, **kwds)'
index_name 'assertRaises'
end
entry do
td_notes <<-'END'
```
round(a-b, 7) == 0
```
END
td_notes '2.7'
name 'assertRaisesRegexp(exc, r, fun, *args, **kwds)'
index_name 'fun(*args, **kwds) raises exc and the message matches regex r'
end
entry do
td_notes <<-'END'
```
round(a-b, 7) == 0
```
END
td_notes ''
name 'assertAlmostEqual(a, b)'
index_name 'assertAlmostEqual'
end
entry do
td_notes <<-'END'
```
round(a-b, 7) != 0
```
END
td_notes ''
name 'assertNotAlmostEqual(a, b)'
index_name 'assertNotAlmostEqual'
end
entry do
td_notes <<-'END'
```
a > b
```
END
td_notes '2.7'
name 'assertGreater(a, b)'
index_name 'assertGreater'
end
entry do
td_notes <<-'END'
```
a >= b
```
END
name 'assertGreaterEqual(a, b)'
index_name 'assertGreaterEqual'
end
entry do
td_notes <<-'END'
```
a < b
```
END
td_notes '2.7'
name 'assertLess(a, b)'
index_name 'assertLess'
end
entry do
td_notes <<-'END'
```
a <= b
```
END
td_notes '2.7'
name 'assertLessEqual(a, b)'
index_name 'assertLessEqual'
end
entry do
td_notes <<-'END'
```
r.search(s)
```
END
td_notes '2.7'
name 'assertRegexpMatches(s, r)'
index_name 'assertRegexpMatches'
end
entry do
td_notes <<-'END'
```
not r.search(s)
```
END
td_notes '2.7'
name 'assertNotRegexpMatches(a, b)'
index_name 'assertNotRegexpMatches'
end
entry do
td_notes <<-'END'
```
sorted(a) == sorted(b)
```
Works with unhashable objects
END
td_notes ''
name 'assertItemsEqual(a, b)'
index_name 'assertItemsEqual'
end
entry do
td_notes <<-'END'
All the key/value pairs in a exist in b
END
td_notes '2.7'
name 'assertDictContainsSubset(a, b)'
index_name 'assertDictContainsSubset'
end
end # end common non-standard headers
notes <<-'END'
* All the assert methods except `assertRaises()` and `assertRaisesRegexp()` accept a `msg` argument that, if specified, is used as the error message on failure.
END
end # end cheatsheet