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RSpec: set locales so routes helpers do not fail in tests
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| # spec/support/locales.rb | |
| RSpec.configure do |config| | |
| # this filter hook set the default locale for the filtered examples to get | |
| # the correct path helpers | |
| # for example the route: | |
| # scope "(:locale)" do | |
| # get "xxx/:id", to: "xxx#show", as: :xxx | |
| # end | |
| # the helper for this route is for example: | |
| # xxx_path(1) | |
| # this helper will work in rails app in other than test envs, but not in test | |
| # mode, because "1" will be assigned to :locale and not to :id, and it will | |
| # complain from not having :id set | |
| # the only solution I found is to stub ActionController::Base.default_url_options | |
| config.before :example, :set_lang do |ex| | |
| m = ex.metadata | |
| allow(ActionController::Base).to receive(:default_url_options) \ | |
| .and_return({locale: m[:set_lang]}) | |
| end | |
| end | |
| # config/routes.rb | |
| Rails.application.routes.draw do | |
| scope "(:locale)" do | |
| get 'view/:id', to: 'controller#action', as: :my_view | |
| end | |
| end | |
| # app/views/test/_test.html.erb | |
| """ | |
| <% if @named_id %> | |
| <%= my_view_path(id: 1) %> | |
| <% else %> | |
| <%= my_view_path(1) %> | |
| <% end %> | |
| """ | |
| # spec/views/test/_test_spec.rb | |
| require 'rails_helper' | |
| RSpec.describe "My View" do | |
| context 'without :locale filter hook' do | |
| it 'raises an exception if :id is not passed as named param' do | |
| expect { | |
| render 'test/test' | |
| }.to raise_error(ActionView::Template::Error, /missing required keys: \[:id\]/) | |
| end | |
| it 'gives /view/1 if :id is passed as named parameter' do | |
| assign :named_id, true | |
| render 'test/test' | |
| expect(rendered).to match '/view/1' | |
| end | |
| end | |
| context 'with :locale filter hook' do | |
| it 'gives /en/view/1 even if :id is not passed as named parameter', set_lang: :en do | |
| render 'test/test' | |
| expect(rendered).to match '/en/view/1' | |
| end | |
| end | |
| end | |
| # will output | |
| # My View | |
| # without :locale filter hook | |
| # gives /view/1 if :id is passed as named parameter | |
| # raises an exception if :id is not passed as named param | |
| # with :locale filter hook | |
| # gives /en/view/1 even if :id is not passed as named parameter | |
| # | |
| # 3 examples, 0 failures |
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