After installing new Rails version, tests failed - ruby-on-rails

Question

After installing Rails 4.0.2 from 4.0.0, my tests are failing. It works in the browser (development). This also happens with Rails 4.0.3.
20) Error:
UserFlowsTest#test_login_and_browse_site:
ActionView::Template::Error: No route matches {:id=>nil} missing required keys: [:id]
app/views/posts/_post.haml:10:in `_app_views_posts__post_haml__439576154_44475312'
app/views/posts/index.haml:1:in `_app_views_posts_index_haml__194952016_42560292'
app/controllers/posts_controller.rb:22:in `block (2 levels) in index'
app/controllers/posts_controller.rb:21:in `index'
test/integration/user_flows_test.rb:14:in `block in <class:UserFlowsTest>'
Here is line user_flows_test:14
post_via_redirect "/users/login", username: users(:chloe).username, password: 'passpasspass'
Here is line _post.haml:10
%a{href: user_path(post.user)}= post.user.username if post.user
The documentation is little help: http://api.rubyonrails.org/classes/ActionDispatch/Integration/RequestHelpers.html#method-i-post_via_redirect
http://guides.rubyonrails.org/testing.html#helpers-available-for-integration-tests
Test output:
-----------------------------------------
UserFlowsTest: test_login_and_browse_site
-----------------------------------------
Started GET "/users/login" for 127.0.0.1 at 2014-02-14 21:35:13 -0500
Processing by UsersController#login as HTML
Rendered users/_login.haml (0.0ms)
Rendered users/_new.haml (41.0ms)
Rendered layouts/_header.haml (0.0ms)
Rendered layouts/_right_bar.haml (1.0ms)
Completed 200 OK in 47ms (Views: 47.0ms | ActiveRecord: 0.0ms)
Started POST "/users/login" for 127.0.0.1 at 2014-02-14 21:35:13 -0500
Processing by UsersController#loginCreate as HTML
Parameters: {"username"=>"chloe", "password"=>"[FILTERED]"}
"*********************************************************************** 1"
Redirected to https://www.example.com/
Completed 302 Found in 160ms (ActiveRecord: 0.0ms)
Started GET "/" for 127.0.0.1 at 2014-02-14 21:35:13 -0500
Processing by PostsController#index as HTML
Rendered posts/_vote.haml (7.0ms)
Rendered posts/_post.haml (18.0ms)
Completed 500 Internal Server Error in 45ms
E-------------------------------
This is the end of UsersController#loginCreate
session[:user_id] = #user.id
p "*********************************************************************** #{session[:user_id]}"
redirect_to root_url, :notice => "Logged in! Last seen from #{lastIP}."
This is from the Rails console
irb(main):009:0> p = Post.first
irb(main):011:0> app.user_path(p.user)
=> "/users/1"
Here is the simplest error
21) Error:
PostsControllerTest#test_should_get_index:
ActionView::Template::Error: No route matches {:id=>nil} missing required keys: [:id]
app/views/posts/_post.haml:10:in `_app_views_posts__post_haml__1028637779_43998912'
app/views/posts/index.haml:1:in `_app_views_posts_index_haml__48584214_43731948'
app/controllers/posts_controller.rb:22:in `block (2 levels) in index'
app/controllers/posts_controller.rb:21:in `index'
test/controllers/posts_controller_test.rb:26:in `block in <class:PostsControllerTest>'
So simple...
test "should get index" do
get :index ###### LINE 26
assert_response :success
assert_not_nil assigns(:posts)
end
More info
$ RAILS_ENV=test rails console
DL is deprecated, please use Fiddle
Loading test environment (Rails 4.0.3)
irb(main):001:0> Post.pluck(:user_id)
=> [0, 1, 2]

Answer 1

Maybe your user has not id:
post.user.id => id
This would mean post user is not persisted?

Answer 2

I had to change a user id from 0 to 1 in the post fixtures. That set of a chain reactions of changes. I also put the if on a different line in the HAML instead of at the end of the line, just in case. The HAML properties seem to be evaluated before the if statement.

Answer 3

Your test is testing a collection route, :index, but the test is showing an error on a member route, as indicated by it looking for an :id.
You're either instantiating your partial (app/views/posts/_post.haml) that has a link_to in it with a nil id or your routes file is the problem.