Rspec / Rails中的存根模型保存方法

Question

This should be simple, but i can't get it to work. I want to stub an :

@alliance.save

so that it returns true. I tried :

Alliance.stub(:save).and_return(true)

but it won't work. Any ideas ?

Answer 1

If I'm not mistaken, Alliance.stub(:save) would affect calls to Alliance.save . You want @alliance.stub(:save).and_return(true) .

Mocha has a useful method any_instance , so you could do something like Alliance.any_instance.stubs(:save).returns(true) , which would (as the name implies) stub the save method for any instance of Alliance .

Answer 2

使用新的RSpec语法：

allow_any_instance_of(Alliance).to receive(:save).and_return(true)

Answer 3

You're probably looking for something like:

describe AllianceController do
  let(:alliance) { mock_model(Alliance) }

  describe "#<controller action>" do
    before do
      Alliance.stub :new => alliance
    end

    context "valid alliance" do
      before do
        alliance.stub :save => true
      end

      it "should ..." do

      end
    end
  end
end

The inner context allows you to work with an Alliance mock which has the save method stubbed to return true.