How to validates JSON type in RSpec?

Question

I want to validate my response type as a JSON in RSpec, but respond_with_content_type is no longer available in shoulda-matchers.

Reference: https://github.com/thoughtbot/shoulda-matchers/issues/252

I'm using:

rails (4.0.2)
rspec-rails (2.14.1)
shoulda-matchers (2.5.0)

This is my controller:

class BrandsController < ApplicationController
  def create
    @brand = Brand.new(permitted_params)
    if @brand.save
      render :json => permitted_params, :status => 200
    else
      render :nothing => true, :status => 500
    end
  end

  private 
  def permitted_params
    params.require(:brand).permit(:name)
  end
end

And this is my spec:

require 'spec_helper'

describe BrandsController do
  describe 'POST create' do
    context 'with empty data' do
      before(:each) { post :create, brand: { name: '' } }
      it { should respond_with 500 }
    end
    context 'with invalid data' do
      before(:each) { post :create, brand: { name: '123' } }
      it { should respond_with 500 }
    end
    context 'with valid data' do
      before(:each) { post :create, brand: { name: 'somebrand' } }
      it { should respond_with 200 }
      # should respond with JSON type
    end
  end
end

Any hints will be great for me. Thanks!

vrybas · Accepted Answer · 2014-02-13 04:19:56Z

3

try this

expect(response.headers["Content-Type"]).to eql("application/json; charset=utf-8")

answered Feb 13, 2014 at 4:19

vrybas

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