Python Fuzzy Matchers
Project description
tl;dr Equals is a stricter version of Mock.Any.
Equals allows you to assert certain equality constraints between python objects during testing. There are times where we don’t want to assert absolute equality, e.g. we need to ensure two lists have the same elements, but don’t care about order. This was designed specifically for usage with Mock and doubles.
Usage with Mock:
from mock import Mock from equals import any_dict test_object = Mock() test_object.method({'bob': 'barker'}) test_object.method.assert_called_with(any_dict)
Usage with doubles:
from doubles import expect from equals import any_string class TestClass(object): def method(self, arg): return arg test_object = TestClass() expect(test_object).method.with_args(any_string.containing('bob')) test_object.method('bob barker')
strings:
from equals import any_string any_string.containing('abc') == '123 abc 456' any_string.starting_with('abc') == 'abcdef' any_string.ending_with('abc') == '123abc' any_string.matching('^abc$') == 'abc'
numbers:
from equals import any_number any_number.less_than(5) == 4 any_number.less_than_or_equal_to(5) == 5 any_number.greater_than(4) == 5 any_number.greater_than_or_equal_to(5) == 5 any_number.between(1, 3) == 2
dictionaries:
from equals import any_dict any_dict.containing(1, 2) == {1: 2, 2:3, 4:5} any_dict.containing(foo='bar') == { 'foo': 'bar', 'bob': 'barker' } any_dict.not_containing(1, foo=5) == {'foo':3, 4:5}
iterators:
from equals import any_iterable any_iterable.containing(1, 2, 3) == [1, 2, 3, 4, 5] any_iterable.containing_only(1, 2, 3) == [2, 3, 1] any_iterable.not_containing(1, 2) == [3, 4] any_iterable.with_length(2) == [3, 4]
objects:
from equals import anything anything == None anything == True anything == {1: 1} anything_true == 'dd' anything_false == '' instance_of(dict) == {} anything.with_attrs(foo='bar', bob='barker') == Dummy('bar', 'barker') instance_of(Dummy).with_attrs(foo='bar', bob='barker') == Dummy('bar', 'barker')
Installation:
>> pip install equals
Development:
>> git clone https://github.com/toddsifleet/equals >> cd equals >> make bootstrap >> make
License:
See LICENSE
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