Stubbing out save methodin rails with rspec - ruby-on-rails-3

I have the following action in my controller:
def create
#user = current_user
#vin = #user.vins.new(params[:vin])
if #vin.save
# waiting for implementation
logger.debug("here we are")
else
redirect_to(vins_path)
end
end
I'd like to test with with rspec. However, I want to stub out the save operation to simulate a failure:
it "should send user to vins_path if there is a problem creating the VIN" do
#vin.stub!(:save).and_return(false)
post 'create', :vin => { :name => "Test 1", :vin => "test" }
response.should redirect_to(vins_path)
end
However, the stub doesn't seem to work as the save operation is always successful. What am I doing wrong?
Thanks

Try this:
Vin.any_instance.stub(:save).and_return(false)

Related

How to stub model method for rspec controller test

I'm trying to stub the model method which I'm using in my controller, but it never seems to be working. Can someone let me know the proper way to do it
User Controller
if current_user.user_token
#user = #account.users.find(params[:id])
#user.revoke_seat(:admin, current_user)
render :template => "/admin/users/revoke_seat"
else
render :js => "window.location.href='#{server_url}/oauth/authorize?response_type=code&client_id=#{client_id}&state=#{request.referrer}?auto_revoke_seat=true&redirect_uri=#{auth_service_callback_url}";
end
Rspec
before do
users(:admin).stub(:internal_admin?).and_return(true)
login_as :admin
user.stub(:user_token).and_return("123123")# THIS IS NOT WORKING
end
it "should redirect to authentication service to generate access token" do
expect(user).to receive(:user_token).and_return(true)
xhr :put, :revoke_seat, account_id: account.id, id: user.id
expect(response).to render_template('admin/users/revoke_seat')
expect(assigns(:account)).to eq(account)
expect(assigns(:user)).to eq(user)
end
You might try the allow approach instead of stub. E.g., allow(:admin).to receive(:internal_admin?).and_return(true)

TDD with RSpec and Rails: testing controller actions with no view

As I continue to learn my way around TDD with RSpec 2 and Rails 3.1, I can't seem to find a solution to this problem.
I have a Users controller with a new and create action. In my UsersController spec, I have
users_controller_spec.rb
describe "POST 'create'" do
before(:each) do
#attr = Factory.attributes_for(:user)
end
it "should assign an #user variable" do
post :create, :user => #attr
assigns[:user].should_not be_nil
assigns[:user].should be_kind_of(User)
end
end
and in my UsersController,
users_controller.rb
def create
#user = User.new(params[:user])
end
This spec is failing with
1) UsersController POST 'create' should assign an #user variable
Failure/Error: post :create, :user => #attr
ActionView::MissingTemplate:
I can continue to implement application code to get this test to pass, but I feel like this test should be passing as it is.
Any suggestions?
Your create method needs to do something. Either render a template or redirect. Since you're not telling it to redirect it's assuming that you want it to render a template but when it can't find a create.html.erb file it throws an error.
You're best bet is to do either this:
def create
#user = User.new(params[:user])
redirect_to root_url
end
or this:
def create
#user = User.new(params[:user])
render :nothing => true
end
To test rendering nothing you'll want:
expect(response).to render_template(nil)
I've come across this recently myself. It seems one possibility would be to rescue the error in your test.
it "should assign an #user variable" do
begin
post :create, :user => #attr
rescue ActionView::MissingTemplate
# This is okay because(/as long as) we test the render/redirect
# in a separate spec where we don't rescue this exception.
end
assigns[:user].should_not be_nil
assigns[:user].should be_kind_of(User)
end
I don't know how "correct" this solution is. On one hand, it definitely emphasizes the "testing one thing at a time" mentality, on the other, it seems kind of ugly.
Edit
I suppose you could make some nice wrappers in your spec helper, something like
def post?(action, params = {})
post action, params
rescue ActionView::MissingTemplate
end

set session for object in Rspec integration test

I have the following in my controller:
def create
#board = Board.find(session[:board])
#greeting = #board.Greetings.build(params[:greeting])
respond_to do |format|
if #greeting.save
format.js { render :action => "success" }
else
format.js { render :action => "failure" }
end
end
end
In my rspec selenium test I want to set the session for the board. But it seems I can't
describe "greeting creation" do
before(:each) do
#board = Factory(:board)
session[:board] = #board.id
end
THis gives the following error:
Failure/Error: session[:board] = #board.id
NoMethodError:
undefined method `session' for nil:NilClass
How can I set the session so this test works?
I had this issue and 'solved' it by using ApplicationController.session[:key].
But now I get the error TypeError:
can't convert Symbol into Integer
level_spec.rb:7:in[]='`
Are you sure the fixture is being called correctly? They're usually plural, like factories(:board).
You could try just setting it explicitly in the test to see if you can even set the session, instead of trying to load from a fixture. If that works, then you know the problem is in loading the fixture.

RSpec and weird tests results

I'm trying to make a simple app. When Im testing it in browser everytyhing works just fine. Howerver, when I try to run some tests with RSpec (2.5) it fails when it comes to :create test for controller.
Here's my create method:
def create
#website = Website.new(params[:website])
if #website.save
flash[:notice] = "Website created."
redirect_to(:action => 'list')
else
render('new')
end
end
The controller test:
describe WebsitesController do
render_views
.
.
.
describe "POST 'create'" do
before(:each) do
#attr = { :adres => "www.excc.pl", :opis => "aaa "*22, :tagi => "aaa aaa aaa",
:preview => File.new(Rails.root + 'spec/fixtures/rails.png'),
:preview_mini => File.new(Rails.root + 'spec/fixtures/rails.png')}
end
describe "success" do
it "should have the right title" do
response.should have_selector("title", :content=>"Lista witryn w portfolio")
end
end
.
.
.
The result of this test:
1) WebsitesController POST 'create' should have the right title
Failure/Error: response.should have_selector("title", :content=>"Lista witryn w portfolio")
expected following output to contain a <title>Lista witryn w portfolio</title> tag:
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN" "http://www.w3.org/TR/REC-html40/loose.dtd">
# ./spec/controllers/websites_controller_spec.rb:34:in `block (4 levels) in
websites_controller_spec.rb:34 refers to create method
However, this test is passed correctly (for incorrect data it should be redirected back to 'new' site with specified title):
it "should have the right title" do
post :create, :website => #attr.merge(:adres => "")
response.should have_selector("title", :content=>"Dodaj stronÄ™ WWW")
end
The second problem is...
There was a time when I've got a test result like this:
<html><body>You are being redire cted.</body></html>
... which was causing me to pull my hair out for some time until I've done sth (I don't really know what) and it was gone. Yet, it makes me scared like hell when I think that it can come back in future an ruin my happiness.
Any thoughts on this would be greatly appreciated.
It's hard to know what is being asked here, but I believe the issue is that you are not setting the conditions for success/failure. If I understand correctly, when you pass in an blank :adres attribute, the save should fail and the page should render the list action. So you want to stub the create method and return true or false depending on the expected result:
it "succeeds" do
#website = mock_model(Website,:save=>true)
Website.stub(:new) { #website }
post :create, :website => {}
# redirects
response.should have_selector("etc etc")
end
it "fails" do
#website = mock_model(Website,:save=>false)
Website.stub(:new) { #website }
post :create, :website => {}
# renders 'new'
response.should_not have_selector("etc etc")
end
Testing of the validity of the parameters should be performed in the model spec:
#website = Website.new(:adres=>"")
#website.should_not be_valid

Rspec2: response.should render_template("new") after invalid params fails

I am testing a controller in RSpec2 and for both my create and update actions, when passed invalid params, the controller should render either the "new" or "edit" templates respectively. It is doing that, but my test never passes.
describe "with invalid params" do
before(:each) do
User.stub(:new) { mock_user(:valid? => false, :save => false) }
end
it "re-renders the 'new' template" do
post :create, :company_id => mock_company.id
response.should render_template("new")
end
end
Results in this:
re-renders the 'new' template
expecting <"new"> but rendering with <"">
Here is the controller action:
respond_to do |format|
if #user.save
format.html {
flash[:notice] = "#{#user.full_name} was added to #{#company.name}."
redirect_to company_users_url(#company)
}
else
logger.debug #user.errors
format.html{
render :new
}
end
end
This problem also seems to be isolated to this controller. I have almost identical code running another controller and it is fine. I am not sure where the problem could be.
Update:
Here are the two mock methods
def mock_user(stubs={})
#mock_user ||= mock_model(User, stubs).as_null_object
end
def mock_company(stubs={})
(#mock_company ||= mock_model(Company).as_null_object).tap do |company|
company.stub(stubs) unless stubs.empty?
end
end
Turned out it was a problem with stubbing and CanCan. CanCan was loading the resources and uses some different methods than what I thought.