Is It Still Advisable to Test Routes in Rails 4 with Minitest

Is it still advisable to test routes in Rails 4 with Minitest?

After writing functional tests for a few new controllers recently, without writing any Route Integration Tests, I'm fairly confident that the additional work of testing routes is overkill. Given, that is, if there are functional tests covering all of the routes.

My reasoning is basically that... in any case where I've supplied improper parameters to a get|patch|post|delete call into a controller action, it's always failed. And whenever I write a test for a controller action that exists but that is lacking a corresponding route it always fails. So it appears that the higher-level functional tests also exercise the lower level route integration tests just fine -- so why bother duplicating effort!

I guess I'll still be looking for an updated "official" word on this in the future, but for now I've decided to stop worrying about directly testing my routes whenever overlapping functional tests exist.

UPDATE

I've further decided that testing API routes may still be useful. This helps to ensure that the actual URL string that is published with the API is actually correct and working. Note that it's important to test the string and not the named route as the named route can change with changes to the resources in the routes file.

How can I test Rails Routes with Minitest?

If you are using minitest-rails you can create route tests by placing the following in test/routes/homepage_test.rb:

require "minitest_helper"

class HomepageRouteTest < ActionDispatch::IntegrationTest
  def test_homepage
    assert_routing "/", :controller => "home", :action => "index"
  end
end

Alternatively, you can use the Minitest Spec DSL:

require "minitest_helper"

describe "Homepage Route Acceptance Test" do
  it "resolves the homepage" do
    assert_routing "/", :controller => "home", :action => "index"
  end
end

You can run these tests with the following rake task:

rake minitest:routes

minitest route testing

You forgot to substitute the :provider param in your route. Try this instead:

assert_routing "/auth/identity/callback", 
  :controller => "sessions",
  :action => "create",
  "provider"=>"identity"

How to test (minitest) get with locale in Rails

A little below this heading: Function Tests for your Controllers in the Rails Guide: A Guide to Testing Rails shows the get method's convention. To pass params to the method, include it as the second parameter to the call.

get :about, locale: 'en'

Need to run some code (insert into DB) before minitest route testing

After your test setup with the Fabricate call in this case, you can request that Rails reloads its routes with:

Rails.application.reload_routes!

This should ensure that the dynamic routes are generated ahead of your assert_recognizes call.

Why are there 2 kinds of controller tests in MiniTest?

First one is Minitest::Unit test syntax explained here

Second is more like Rspec syntax, you can use minitest-spec-rails gem for that

How to test routes that don't include controller?

Try to test thus:

With Rails 3:

require 'minitest_helper'

class FooControllerTest < ActionController::TestCase
  def test_should_get_index
    assert_routing "/baz", :controller => "foo", :action => "bar"
  end
end

With Rails 4:

require "test_helper"

class FooControllerTest < ActionDispatch::IntegrationTest
  def test_should_get_index
    assert_generates "/baz", :controller => "foo", :action => "bar"
  end
end

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