require 'test_helper'

require 'stubba/object'
require 'smart_test_case/multiple_setup_and_teardown'
require 'stubba/setup_and_teardown'

class StubbaIntegrationTest < Test::Unit::TestCase
  
  class DontMessWithMe
    def self.method_x
      :original_return_value
    end
    def instance_method_1
      :original_return_value
    end
    # def self.object
    #   @object ||= Class.new do
    #     def instance_method_1
    #       :original_return_value
    #     end
    #   end.new
    # end
  end
  
  def test_should_stub_class_method_within_test
    test = build_test do
      DontMessWithMe.expects(:method_x).returns(:new_return_value)
      assert_equal :new_return_value, DontMessWithMe.method_x
    end

    test_result = Test::Unit::TestResult.new
    test.run(test_result) {}
    assert test_result.passed?
  end

  def test_should_leave_stubbed_class_method_unchanged_after_test
    test = build_test do
      DontMessWithMe.expects(:method_x).returns(:new_return_value)
    end

    test.run(Test::Unit::TestResult.new) {}
    assert_equal :original_return_value, DontMessWithMe.method_x
  end
  
  def test_should_reset_class_expectations_after_test
    test = build_test do
      DontMessWithMe.expects(:method_x)
    end
    
    test.run(Test::Unit::TestResult.new) {}
    assert_equal 0, DontMessWithMe.mocha.expectations.size
  end  

  def test_should_stub_instance_method_within_test
    instance = DontMessWithMe.new
    test = build_test do
      instance.expects(:instance_method_1).returns(:new_return_value)
      assert_equal :new_return_value, instance.instance_method_1
    end
    test_result = Test::Unit::TestResult.new
    test.run(test_result) {}
    assert test_result.passed?
  end
  
  def test_should_leave_stubbed_instance_method_unchanged_after_test
    instance = DontMessWithMe.new
    test = build_test do
      instance.expects(:instance_method_1).returns(:new_return_value)
    end

    test.run(Test::Unit::TestResult.new) {}
    assert_equal :original_return_value, instance.instance_method_1
  end
  
  def test_should_reset_instance_expectations_after_test
    instance = DontMessWithMe.new
    test = build_test do
      instance.expects(:instance_method_1).returns(:new_return_value)
    end
    
    test.run(Test::Unit::TestResult.new) {}
    assert_equal 0, instance.mocha.expectations.size
  end  

  private

  def build_test(&block)
    test_class = Class.new(Test::Unit::TestCase) do
      include MultipleSetupAndTeardown
      include SetupAndTeardown
      define_method(:test_me, &block)
    end
    test_class.new(:test_me)
  end

end