require 'spec_helper'
module RSpec
  module Matchers
    describe "equal" do

      def inspect_object(o)
        "#<#{o.class}:#{o.object_id}> => #{o.inspect}"
      end

      it "matches when actual.equal?(expected)" do
        1.should equal(1)
      end

      it "does not match when !actual.equal?(expected)" do
        "1".should_not equal("1")
      end

      it "describes itself" do
        matcher = equal(1)
        matcher.matches?(1)
        matcher.description.should == "equal 1"
      end

      it "provides message on #failure_message" do
        expected, actual = "1", "1"
        matcher = equal(expected)
        matcher.matches?(actual)

        matcher.failure_message_for_should.should == <<-MESSAGE

expected #{inspect_object(expected)}
     got #{inspect_object(actual)}

Compared using equal?, which compares object identity,
but expected and actual are not the same object. Use
'actual.should eq(expected)' if you don't care about
object identity in this example.

MESSAGE
      end

      it "provides message on #negative_failure_message" do
        expected = actual = "1"
        matcher = equal(expected)
        matcher.matches?(actual)
        matcher.failure_message_for_should_not.should == <<-MESSAGE

expected not #{inspect_object(expected)}
         got #{inspect_object(actual)}

Compared using equal?, which compares object identity.

MESSAGE
      end
    end
  end
end