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# Ecriture de fichier spec
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## Spec de `Model`
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## Spec de `View`
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### Helpers
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- _matcher_ `have_link_for_each_item` qui permet d'itérer sur tous les éléments d'une collection, et de vérifier - pour chacun - qu'on a un lien vers l'URL désirée (dans [`spec/support/integration_spec_helper.rb`](http://github.com/af83/stif-boiv/blob/f83df1a0b39b2af7d3088db9c98365c4088bc021/spec/support/integration_spec_helper.rb#L22)).
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- _matcher_ `have_the_right_number_of_links` qui permet d'itérer sur tous les éléments d'une collection, et de vérifier - pour chacun - qu'on a le bon nombre de liens (dans [`spec/support/integration_spec_helper.rb`](http://github.com/af83/stif-boiv/blob/f83df1a0b39b2af7d3088db9c98365c4088bc021/spec/support/integration_spec_helper.rb#L22)).
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- `with_permission permission_name do ...` qui permet de tester le rendu avec un utilisateur disposant de la permission désirée (dans [`spec/support/integration_spec_helper.rb`](http://github.com/af83/stif-boiv/blob/f83df1a0b39b2af7d3088db9c98365c4088bc021/spec/support/integration_spec_helper.rb#L22)).
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- `build_paginated_collection(:factory_name, decorator_class, factory_options, context: decorator_context)` permet de construire une collection d'objets et de les décorer, de façon similaire à ce que ferait un controlleur (dans [`spec/support/integration_spec_helper.rb`](http://github.com/af83/stif-boiv/blob/f83df1a0b39b2af7d3088db9c98365c4088bc021/spec/support/integration_spec_helper.rb#L22).
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### Tips
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- pour _nester_ la vue, par exemple émuler une URL `/parents/:parent_id/objects`: `controller.request.path_parameters[:parent_id] = parent.id`
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### Exemple
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Pour une vue d'__index__, dans laquelle on veut vérifier:
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- le nombre de lignes du tableau
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- la présence de lien pour chaque ligne (en fonction des permissions)
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```ruby
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require 'spec_helper'
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describe "/objects/index", :type => :view do
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let(:parent) { assign :parent, create(:parent) }
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let(:context) {
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{
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foo: bar,
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bar: baz
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}
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}
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let(:objects) do
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assign :objects, build_paginated_collection(:object, ObjectDecorator, parent: parent, context: context)
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end
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before :each do
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allow(view).to receive(:collection).and_return(objects)
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allow(view).to receive(:current_referential).and_return(parent)
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controller.request.path_parameters[:parent_id] = parent.id
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render
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end
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common_items = ->{
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it { should have_link_for_each_item(objects, "show", -> (object){ view.parent_object_path(parent, object) }) }
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it { should have_link_for_each_item(objects, "foo", -> (object){ view.parent_foo_path(parent, object.foo) }) }
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it { should have_link_for_each_item(objects, "bar", -> (object){ view.parent_bar_path(parent, object.bar) }) }
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}
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common_items.call()
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it { should have_the_right_number_of_links(objects, 3) }
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with_permission "objects.activate" do
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common_items.call()
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it { should have_link_for_each_item(objects, "activate", -> (object){ view.activate_parent_object_path(parent, object) }) }
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it { should have_the_right_number_of_links(objects, 4) }
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end
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end
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```
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## Spec de `Controller`
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### Helpers
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- `login_user` pour créer un utilisateur et le passer dans la session
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- `with_permission permission do ...` pour ajouter la permission à l'utilisateur connecté dans le contexte
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### Exemple
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```ruby
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RSpec.describe ObjectController, :type => :controller do
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login_user
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let(:parent) { create :parent }
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let(:object) { create :object, parent: parent }
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describe 'PUT deactivate' do
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let(:request){ put :deactivate, id: object.id, parent_id: parent.id }
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it 'should redirect to 403' do
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expect(request).to redirect_to "/403"
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end
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with_permission "foo.bar" do
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it 'returns HTTP success' do
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expect(request).to redirect_to [parent, object]
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expect(object.reload).to be_deactivated
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end
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end
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end
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describe 'PUT activate' do
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let(:request){ put :activate, id: object.id, parent_id: parent.id }
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before(:each){
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object.deactivate!
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}
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it 'should redirect to 403' do
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expect(request).to redirect_to "/403"
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end
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with_permission "objects.change_status" do
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it 'returns HTTP success' do
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expect(request).to redirect_to [parent, object]
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expect(object.reload).to be_activated
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end
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end
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end
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end
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``` |