Test case for gimme class method spies

spies_on_class_method_spec.rb

require 'spec_helper'

module Gimme
  class ChairFactory

    def self.build
      raise RuntimeError.new "unimplemented feature"
    end

    def self.destroy
      raise RuntimeError.new "unimplemented feature"
    end

  end

  module StoolBuilder
    def build
      raise RuntimeError.new "unimplemented feature"
    end
  end

  class StoolFactory
    extend StoolBuilder

    def self.destroy
      raise RuntimeError.new "unimplemented feature"
    end
  end

  describe SpiesOnClassMethod do
    shared_examples_for "it spies on class methods" do
      describe "normal class method spy" do
        Given(:invocation) { lambda { ChairFactory.build } }
        Then { invocation.should_not raise_error }

        context "upon reset" do
          When { Gimme.reset }
          Then { invocation.should raise_error }
        end

      end

      describe "imaginary class method spy" do
        Given(:invocation) { lambda { ChairFactory.fantasy } }
        Then { invocation.should_not raise_error }

        context "upon reset" do
          When { Gimme.reset }
          Then { invocation.should raise_error }
        end
      end
    end

    context "classical API" do
      it_behaves_like "it spies on class methods" do
        subject { SpiesOnClassMethod.new(ChairFactory) }
        Given { subject.spy(:build) }
        Given { subject.raises_no_method_error = false }
        Given { subject.spy(:fantasy) }
      end
    end

    context "gimme DSL" do
      it_behaves_like "it spies on class methods" do
        Given { spy_on(ChairFactory, :build) }
        Given { spy_on!(ChairFactory, :fantasy) }
      end
    end

    context "with methods included from a module" do
      context "classical API" do
        it_behaves_like "it spies on class methods" do
          subject { SpiesOnClassMethod.new(StoolFactory) }
          Given { subject.spy(:build) }
          Given { subject.raises_no_method_error = false }
          Given { subject.spy(:fantasy) }
        end
      end

      context "gimme DSL" do
        it_behaves_like "it spies on class methods" do
          Given { spy_on(StoolFactory, :build) }
          Given { spy_on!(StoolFactory, :fantasy) }
        end
      end
    end


  end
end