Вы хотите использовать assigns
в спецификации вашего контроллера.Поскольку у вас еще нет кода, самый быстрый способ показать вам пример - просто запустить rails g scaffold car
.Предполагая, что у вас есть rspec-rails
в вашем Gemfile, вы должны получить что-то вроде этого в spec/controllers/cars_controller_spec.rb
:
require 'rails_helper'
# This spec was generated by rspec-rails when you ran the scaffold generator.
# It demonstrates how one might use RSpec to specify the controller code that
# was generated by Rails when you ran the scaffold generator.
#
# It assumes that the implementation code is generated by the rails scaffold
# generator. If you are using any extension libraries to generate different
# controller code, this generated spec may or may not pass.
#
# It only uses APIs available in rails and/or rspec-rails. There are a number
# of tools you can use to make these specs even more expressive, but we're
# sticking to rails and rspec-rails APIs to keep things simple and stable.
#
# Compared to earlier versions of this generator, there is very limited use of
# stubs and message expectations in this spec. Stubs are only used when there
# is no simpler way to get a handle on the object needed for the example.
# Message expectations are only used when there is no simpler way to specify
# that an instance is receiving a specific message.
RSpec.describe CarsController, type: :controller do
# This should return the minimal set of attributes required to create a valid
# Car. As you add validations to Car, be sure to
# adjust the attributes here as well.
let(:valid_attributes) {
skip("Add a hash of attributes valid for your model")
}
let(:invalid_attributes) {
skip("Add a hash of attributes invalid for your model")
}
# This should return the minimal set of values that should be in the session
# in order to pass any filters (e.g. authentication) defined in
# CarsController. Be sure to keep this updated too.
let(:valid_session) { {} }
describe "GET #index" do
it "assigns all cars as @cars" do
car = Car.create! valid_attributes
get :index, params: {}, session: valid_session
expect(assigns(:cars)).to eq([car])
end
end
describe "GET #show" do
it "assigns the requested car as @car" do
car = Car.create! valid_attributes
get :show, params: {id: car.to_param}, session: valid_session
expect(assigns(:car)).to eq(car)
end
end
describe "GET #new" do
it "assigns a new car as @car" do
get :new, params: {}, session: valid_session
expect(assigns(:car)).to be_a_new(Car)
end
end
describe "GET #edit" do
it "assigns the requested car as @car" do
car = Car.create! valid_attributes
get :edit, params: {id: car.to_param}, session: valid_session
expect(assigns(:car)).to eq(car)
end
end
describe "POST #create" do
context "with valid params" do
it "creates a new Car" do
expect {
post :create, params: {car: valid_attributes}, session: valid_session
}.to change(Car, :count).by(1)
end
it "assigns a newly created car as @car" do
post :create, params: {car: valid_attributes}, session: valid_session
expect(assigns(:car)).to be_a(Car)
expect(assigns(:car)).to be_persisted
end
it "redirects to the created car" do
post :create, params: {car: valid_attributes}, session: valid_session
expect(response).to redirect_to(Car.last)
end
end
context "with invalid params" do
it "assigns a newly created but unsaved car as @car" do
post :create, params: {car: invalid_attributes}, session: valid_session
expect(assigns(:car)).to be_a_new(Car)
end
it "re-renders the 'new' template" do
post :create, params: {car: invalid_attributes}, session: valid_session
expect(response).to render_template("new")
end
end
end
describe "PUT #update" do
context "with valid params" do
let(:new_attributes) {
skip("Add a hash of attributes valid for your model")
}
it "updates the requested car" do
car = Car.create! valid_attributes
put :update, params: {id: car.to_param, car: new_attributes}, session: valid_session
car.reload
skip("Add assertions for updated state")
end
it "assigns the requested car as @car" do
car = Car.create! valid_attributes
put :update, params: {id: car.to_param, car: valid_attributes}, session: valid_session
expect(assigns(:car)).to eq(car)
end
it "redirects to the car" do
car = Car.create! valid_attributes
put :update, params: {id: car.to_param, car: valid_attributes}, session: valid_session
expect(response).to redirect_to(car)
end
end
context "with invalid params" do
it "assigns the car as @car" do
car = Car.create! valid_attributes
put :update, params: {id: car.to_param, car: invalid_attributes}, session: valid_session
expect(assigns(:car)).to eq(car)
end
it "re-renders the 'edit' template" do
car = Car.create! valid_attributes
put :update, params: {id: car.to_param, car: invalid_attributes}, session: valid_session
expect(response).to render_template("edit")
end
end
end
describe "DELETE #destroy" do
it "destroys the requested car" do
car = Car.create! valid_attributes
expect {
delete :destroy, params: {id: car.to_param}, session: valid_session
}.to change(Car, :count).by(-1)
end
it "redirects to the cars list" do
car = Car.create! valid_attributes
delete :destroy, params: {id: car.to_param}, session: valid_session
expect(response).to redirect_to(cars_url)
end
end
end