SimpleMock

gistfile1.rb

# Inspired by "Mocking with MiniTest::Mock and SimpleDelegator" it would be
# great to have a library with no dependancies that gives you the behaviour
# talked about in the blog post without learning a new API.
# http://tatey.com/2012/02/07/mocking-with-minitest-mock-and-simple-delegator/

# Without an argument, SimpleMock behaves identically to MiniTest::Mock.new
mock = SimpleMock.new
mock.expect :valid?, false
mock.valid? # => false
mock.save   # => NoMethodError

# With an argument, SimpleMock instantiates an anonymous class that inherits from SimpleDelegate.
# Except for expectations, all methods are forwarded to the delegate.
mock = SimpleMock.new Post.new
mock.expect :valid?, false
mock.valid? # => false
mock.save   # => false