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rails--rails/actionpack/test/dispatch/routing/non_dispatch_routed_app_test.rb
Darren Cheng 6052fa9288 Support testing of non-ActionDispatch-routed apps.
The [Grape API framework](https://github.com/ruby-grape/grape) regularly
writes tests like
[spec/grape/api_spec.rb](https://github.com/ruby-grape/grape/blob/master/spec/grape/api_spec.rb).

When attempting to write a test in a Rails environment similar to the
following:
```
describe Grape::Api, type: :request do
  let(:app) {
    Class.new(Grape::API) do
      get 'test' do
        { foo: 'bar' }
      end
    end
  }

  it '200s' do
    get 'test'
  end
end
```

The following exception is thrown:

```
NoMethodError: undefined method `url_helpers' for #<Array:0x00007fb4e4bc4c88>
--
0: .../lib/action_dispatch/testing/integration.rb:330:in `block in create_session'
1: .../lib/action_dispatch/testing/integration.rb:326:in `initialize'
2: .../lib/action_dispatch/testing/integration.rb:326:in `new'
3: .../lib/action_dispatch/testing/integration.rb:326:in `create_session'
4: .../lib/action_dispatch/testing/integration.rb:316:in `integration_session'
5: .../lib/action_dispatch/testing/integration.rb:348:in `block (2 levels) in <module:Runner>'
```

This change explicitly ensures that `app.routes` is an
`ActionDispatch::Routing::RouteSet` instance.
2019-02-05 20:25:39 -08:00

27 lines
522 B
Ruby

# frozen_string_literal: true
require "abstract_unit"
module ActionDispatch
module Routing
class NonDispatchRoutedAppTest < ActionDispatch::IntegrationTest
# For example, Grape::API
class SimpleApp
def self.call(env)
[ 200, { "Content-Type" => "text/plain" }, [] ]
end
def self.routes
[]
end
end
setup { @app = SimpleApp }
test "does not except" do
get "/foo"
assert_response :success
end
end
end
end