Rspec checking for json response

问题

I am trying to create a mock object and i am checking whether my method receives the right param and expected result.

Below is my spec.

require 'spec_helper'

describe User do 

  let(:username) {"test@test.com"}
  let(:password) {"123"}
  let(:code) {"0"}

  context "when signing in" do 

    it "should sign in" do 
      user = double("user")
      expected_results = {
        "token": "123"
      }
      allow(user).to receive(:login).with({email: username, password: password, code: code})
        .and_return(expected_results)
      expect(user.login).to eq(expected_results)
    end

  end    
end

Is there a way to separate my json from it block and keep it outside?.

回答1:

You can use let inside a context block to set the value of a variable for the examples nested within:

require 'spec_helper'

describe User do 

  let(:username) {"test@test.com"}
  let(:password) {"123"}
  let(:code) {"0"}

  context "when signing in" do
    let(:expected_results) { {token:"123"}.to_json }

    it "should sign in" do 
      user = double("user")
      allow(user).to receive(:login).with({email: username, password: password, code: code})
        .and_return(expected_results)
      expect(user.login).to eq(expected_results)
    end

  end    
end

am i doing the right way of testing?

Not if you are testing the User#login method. You should not set a stub if you are trying to test the logic of the method being stubbed. Instead, use a real model instance, perhaps using a factory, and omit the allow step.

回答2:

You can use a before do block in the context or before the context.

Here is the reference: https://www.relishapp.com/rspec/rspec-core/docs/hooks/before-and-after-hooks

来源：https://stackoverflow.com/questions/25273062/rspec-checking-for-json-response