SimpleStub
Defining simple scoped stub with apply/reset interface
fixed_time = Time.now
stub_time_now = SimpleStub.for_singleton_method(Time, :now) { fixed_time }
stub_time_now.apply!
# Time.now is fixed here
stub_time_now.reset!Installation
gem 'simple_stub'then bundle install.
Usage
For stubbing a singleton method (or class method), use SimpleStub.for_singleton_method.
fixed_time = Time.now
stub_time_now = SimpleStub.for_singleton_method(Time, :now) { fixed_time }
stub_time_now.apply!
# Time.now is fixed here
stub_time_now.reset!For stubbing an instance method (which affects to all of the instances), use SimpleStub.for_instance_method.
class Dog
def hello
'Hello!'
end
end
stub_dog_hello = SimpleStub.for_instance_method(Dog, :hello) { 'Bow' }
dog1 = Dog.new
stub_dog1_hello = SimpleStub.for_singleton_method(dog1, :hello) { ">> #{super()} <<" }
stub_dog_hello.apply!
Dog.new.hello # => 'Bow'
dog1.hello # => 'Bow'
stub_dog1_hello.apply!
dog1.hello # => '>> Bow <<'Since SimpleStub doesn't store any state in the instance, we can use it separatedly.
class SomethingSetup
def call
# All username becomes John Doe
SimpleStub.for_instance_method(User, :name) { 'John Doe' }.apply
end
end
class SomethingTeardown
def call
SimpleStub.for_instance_method(User, :name).reset
end
endLicense
The gem is available as open source under the terms of the MIT License.
Code of Conduct
Everyone interacting in the SimpleStub project’s codebases, issue trackers, chat rooms and mailing lists is expected to follow the code of conduct.