#A template for Rails Rspec controller testing

We have used a generic "ItemController" and a subsequent "Item" model, with 'item' objects. Update your controller test to include the appropriate model/controller names.

---

###New Action This tests the #new action in the controller, we provide some examples for tests, both hitting the database and not.

###Context: with hitting the database

before(:each) do
  get :new
end

it "creates a new item" do
  expect(assigns(:item)).to be_a_new(Item)
end

###Context: without hitting the database

let(:item_double) { double("item_double")}
before(:each) do
  Item.stub(:new).and_return(item_double)
  get :new
end

it "creates a new item" do
  expect(assigns(:item)).to be(item_double)
end

---

###Create Action This tests the #create action in the controller, we provide some examples for tests, both hitting the database and not.

###Context: with hitting the database

it "creates a new Item" do
  expect{
    post :create, item: FactoryGirl.attributes_for(:item)
  }.to change(Item,:count).by(1)
end

###Context: without hitting the database

let(:item_double) { double("item_double")}
before(:each) do
  Item.stub(:new).and_return(item_double)
  item_double.stub(:save).and_return(true)
end

it "creates a new item" do
  post :create
  expect(assigns(:item)).to be(item_double)
end

it "redirects to the correct url" do
  post :create
  expect(response).to redirect_to root_url
end

---

###Edit Action This tests the #edit action in the controller, we provide some examples for tests, both hitting the database and not.

###Context: with hitting the database

let(:item) {Item.create(first_attribute: "My name", second_attribute: 23)}

before(:each) do
  get :edit, id: item
end

it "finds a specific item" do
  expect(assigns(:item)).to eq(item)
end

###Context: without hitting the database

let(:item) {double("item")}

it "finds a specific item" do
  Todo.should_recieve(:find).once.and_return(item)
  get :edit, id: item
end

---

###Update Action This tests the #update action in the controller, we provide some examples for tests, both hitting the database and not.

###Context: with hitting the database

let(:item) {Item.create(first_attribute: "My name", second_attribute: 23)}

it "updates an item with valid params" do
  post :update, id: item, item: {first_attribute: "Updated name", second_attribute: 23}
  item.reload
  expect(item.first_attribute).to eq("Updated name")
end

###Context: without hitting the database

let(:item) {double("todo")}
let(:attrs) {first_attribute: "Updated name", second_attribute: 23}

it "updates an item with valid params" do
  Item.stub(:find).and_return(item)
  item.should_recieve(:update_attributes).with(attrs.stringify_keys)
  post :update, id: item, item: attrs
end

it "redirects to item once updated" do
  item = stub_model(Item)
  Item.stub(:find).and_return(item)
  item.stub(:update_attributes).and_return(true)
  post :update, id: item, item: attrs
  expect(response).to redirect_to(item)
end