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Contents
# frozen_string_literal: true
class Sinclair
module Matchers
# @api private
# @author darthjee
#
# AddInstanceMethod is able to build an instance of
# {Sinclair::Matchers::ChangeInstanceMethodOn}
class ChangeInstanceMethod < AddMethod
# @example Checking if an instance method has changed
# RSpec.configure do |config|
# config.include Sinclair::Matchers
# end
#
# class MyModel
# end
#
# RSpec.describe 'my test' do
# let(:builder) { Sinclair.new(klass) }
# let(:klass) { Class.new(MyModel) }
#
# before do
# builder.add_method(:the_method) { 10 }
# builder.build
# builder.add_method(:the_method) { 20 }
# end
#
# it do
# expect{ builder.build }.to change_method(:the_method).on(klass)
# end
# end
#
# @example Checking if an instance method has changed on an instance
# RSpec.configure do |config|
# config.include Sinclair::Matchers
# end
#
# class MyModel
# end
#
# RSpec.describe 'my test' do
# let(:builder) { Sinclair.new(klass) }
# let(:instance) { klass.new }
# let(:klass) { Class.new(MyModel) }
#
# before do
# builder.add_method(:the_method) { 10 }
# builder.build
# builder.add_method(:the_method) { 20 }
# end
#
# it do
# expect{ builder.build }.to change_method(:the_method).on(instance)
# end
# end
with_final_matcher :on, ChangeInstanceMethodOn
private
# @private
#
# Error description on wrong usage
#
# @return String
def matcher_error
'You should specify which instance the method is being changed on' \
"change_method(:#{method_name}).on(instance)"
end
end
end
end
Version data entries
17 entries across 17 versions & 1 rubygems