This gem was designed do make isolated tests more resilient. In isolated tests, a FireMock is no different than a common mock. The only difference is when the test is called on a not-isolated environment. It checks for the presence of the method on the mocked class, and fails if it isn't there. This adds another layer of security for suit tests, without compromising the isolation of unit tests.
require 'minitest/autorun' require 'minitest/fire_mock' class MyClass def my_method # actual_work goes here end end class MyOtherClassTest < MiniTest::Unit::TestCase def test_for_correctness mock = Minitest::FireMock.new('MyClass') mock.expect(:my_method, 42) assert_equal 42, mock.my_method mock.verify end end
The only real difference of using
Minitest::FireMock instead of
Minitest::Mock is that if
MyClass is defined, and
my_method isn't there, it'll raise a
MockExpectationError. It checks also for the arity of the method, so it'll raise a
MockExpectationError if the real method have a different arity than the expectation.
- Mock class/module methods too.
- Make it work with method_missing (as of now it doesn't, even if the #responds_to? is correct)