Use system specs instead of feature specs

We get rid of database cleaner, and JavaScript tests are faster because
between tests we now rollback transactions instead of truncating the
database.

spec/shared/system/nested_imageable.rb

@@ -0,0 +1,301 @@
+shared_examples "nested imageable" do |imageable_factory_name, path, imageable_path_arguments, fill_resource_method_name, submit_button, imageable_success_notice, has_many_images = false|
+  let!(:user)                { create(:user, :level_two) }
+  let!(:administrator)       { create(:administrator, user: user) }
+  let!(:arguments)           { {} }
+  let!(:imageable)           { create(imageable_factory_name) }
+
+  before do
+    imageable_path_arguments&.each do |argument_name, path_to_value|
+      arguments.merge!("#{argument_name}": imageable.send(path_to_value))
+    end
+
+    imageable.update(author: user) if imageable.respond_to?(:author)
+  end
+
+  describe "at #{path}" do
+    scenario "Should show new image link when imageable has not an associated image defined" do
+      login_as user
+      visit send(path, arguments)
+
+      expect(page).to have_selector "#new_image_link", visible: true
+    end
+
+    scenario "Should hide new image link after adding one image" do
+      login_as user
+      visit send(path, arguments)
+
+      click_on "Add image"
+
+      expect(page).to have_selector "#new_image_link", visible: false
+    end
+
+    scenario "Should update nested image file name after choosing any file", :js do
+      login_as user
+      visit send(path, arguments)
+
+      click_link "Add image"
+      image_input = find(".image").find("input[type=file]", visible: false)
+      attach_file(
+        image_input[:id],
+        Rails.root.join("spec/fixtures/files/clippy.jpg"),
+        make_visible: true
+      )
+
+      expect(page).to have_selector ".file-name", text: "clippy.jpg"
+    end
+
+    scenario "Should update nested image file title with file name after choosing a file when no title defined", :js do
+      login_as user
+      visit send(path, arguments)
+
+      imageable_attach_new_file(
+        imageable_factory_name,
+        Rails.root.join("spec/fixtures/files/clippy.jpg")
+      )
+
+      expect_image_has_title("clippy.jpg")
+    end
+
+    scenario "Should not update nested image file title with file name after choosing a file when title already defined", :js do
+      login_as user
+      visit send(path, arguments)
+
+      click_link "Add image"
+      input_title = find(".image input[name$='[title]']")
+      fill_in input_title[:id], with: "Title"
+      image_input = find(".image").find("input[type=file]", visible: false)
+      attach_file(
+        image_input[:id],
+        Rails.root.join("spec/fixtures/files/clippy.jpg"),
+        make_visible: true
+      )
+
+      if has_many_images
+        expect(find("input[id$='_title']").value).to eq "Title"
+      else
+        expect(find("##{imageable_factory_name}_image_attributes_title").value).to eq "Title"
+      end
+    end
+
+    scenario "Should update loading bar style after valid file upload", :js do
+      login_as user
+      visit send(path, arguments)
+
+      imageable_attach_new_file(
+        imageable_factory_name,
+        Rails.root.join("spec/fixtures/files/clippy.jpg")
+      )
+
+      expect(page).to have_selector ".loading-bar.complete"
+    end
+
+    scenario "Should update loading bar style after invalid file upload", :js do
+      login_as user
+      visit send(path, arguments)
+
+      imageable_attach_new_file(
+        imageable_factory_name,
+        Rails.root.join("spec/fixtures/files/logo_header.png"),
+        false
+      )
+
+      expect(page).to have_selector ".loading-bar.errors"
+    end
+
+    scenario "Should update image cached_attachment field after valid file upload", :js do
+      login_as user
+      visit send(path, arguments)
+
+      imageable_attach_new_file(
+        imageable_factory_name,
+        Rails.root.join("spec/fixtures/files/clippy.jpg")
+      )
+
+      expect_image_has_cached_attachment(".jpg")
+    end
+
+    scenario "Should not update image cached_attachment field after invalid file upload", :js do
+      login_as user
+      visit send(path, arguments)
+
+      imageable_attach_new_file(
+        imageable_factory_name,
+        Rails.root.join("spec/fixtures/files/logo_header.png"),
+        false
+      )
+
+      expect_image_has_cached_attachment("")
+    end
+
+    scenario "Should show nested image errors after invalid form submit", :js do
+      login_as user
+      visit send(path, arguments)
+
+      click_link "Add image"
+      click_on submit_button
+
+      if has_many_images
+        # Pending. Review soon and test
+      else
+        within "#nested-image .image" do
+          expect(page).to have_content("can't be blank", count: 2)
+        end
+      end
+    end
+
+    scenario "Should remove nested image after valid file upload and click on remove button", :js do
+      login_as user
+      visit send(path, arguments)
+
+      imageable_attach_new_file(
+        imageable_factory_name,
+        Rails.root.join("spec/fixtures/files/clippy.jpg")
+      )
+
+      within "#nested-image .image" do
+        click_link "Remove image"
+      end
+
+      expect(page).not_to have_selector("#nested-image .image")
+    end
+
+    scenario "Should show successful notice when resource filled correctly without any nested images", :js do
+      if has_many_images
+        skip "no need to test, there are no attributes for the parent resource"
+      else
+        login_as user
+        visit send(path, arguments)
+
+        send(fill_resource_method_name) if fill_resource_method_name
+        click_on submit_button
+        expect(page).to have_content imageable_success_notice
+      end
+    end
+
+    scenario "Should show successful notice when resource filled correctly and after valid file uploads", :js do
+      login_as user
+      visit send(path, arguments)
+      send(fill_resource_method_name) if fill_resource_method_name
+
+      imageable_attach_new_file(
+        imageable_factory_name,
+        Rails.root.join("spec/fixtures/files/clippy.jpg")
+      )
+
+      click_on submit_button
+
+      expect(page).to have_content imageable_success_notice
+    end
+
+    scenario "Should show new image after successful creation with one uploaded file", :js do
+      login_as user
+      visit send(path, arguments)
+      send(fill_resource_method_name) if fill_resource_method_name
+
+      imageable_attach_new_file(
+        imageable_factory_name,
+        Rails.root.join("spec/fixtures/files/clippy.jpg")
+      )
+
+      click_on submit_button
+      imageable_redirected_to_resource_show_or_navigate_to
+
+      if has_many_images
+        # Pending. Review soon and test
+      else
+        expect(page).to have_selector "figure img"
+        expect(page).to have_selector "figure figcaption"
+      end
+    end
+
+    if path.include? "edit"
+      scenario "Should show persisted image" do
+        create(:image, imageable: imageable)
+        login_as user
+        visit send(path, arguments)
+
+        expect(page).to have_css ".image", count: 1
+      end
+
+      scenario "Should not show add image button when image already exists", :js do
+        create(:image, imageable: imageable)
+        login_as user
+        visit send(path, arguments)
+
+        expect(page).to have_css "a#new_image_link", visible: false
+      end
+
+      scenario "Should remove nested field after remove image", :js do
+        create(:image, imageable: imageable)
+        login_as user
+        visit send(path, arguments)
+        click_on "Remove image"
+
+        expect(page).not_to have_css ".image"
+      end
+
+      scenario "Should show add image button after remove image", :js do
+        create(:image, imageable: imageable)
+        login_as user
+        visit send(path, arguments)
+        click_on "Remove image"
+
+        expect(page).to have_css "a#new_image_link", visible: true
+      end
+    end
+  end
+end
+
+def imageable_redirected_to_resource_show_or_navigate_to
+  find("a", text: "Not now, go to my proposal")
+  click_on "Not now, go to my proposal"
+rescue
+  nil
+end
+
+def imageable_attach_new_file(_imageable_factory_name, path, success = true)
+  click_link "Add image"
+  within "#nested-image" do
+    image = find(".image")
+    image_input = image.find("input[type=file]", visible: false)
+    attach_file(image_input[:id], path, make_visible: true)
+    within image do
+      if success
+        expect(page).to have_css(".loading-bar.complete")
+      else
+        expect(page).to have_css(".loading-bar.errors")
+      end
+    end
+  end
+end
+
+def imageable_fill_new_valid_proposal
+  fill_in "Proposal title", with: "Proposal title"
+  fill_in "Proposal summary", with: "Proposal summary"
+  check :proposal_terms_of_service
+end
+
+def imageable_fill_new_valid_budget_investment
+  page.select imageable.heading.name_scoped_by_group, from: :budget_investment_heading_id
+  fill_in "Title", with: "Budget investment title"
+  fill_in_ckeditor "Description", with: "Budget investment description"
+  check :budget_investment_terms_of_service
+end
+
+def expect_image_has_title(title)
+  image = find(".image")
+
+  within image do
+    expect(find("input[name$='[title]']").value).to eq title
+  end
+end
+
+def expect_image_has_cached_attachment(extension)
+  within "#nested-image" do
+    image = find(".image")
+
+    within image do
+      expect(find("input[name$='[cached_attachment]']", visible: false).value).to end_with(extension)
+    end
+  end
+end