test custom comment form field

spec/forms/custom_fields/comment_field_spec.rb

@@ -0,0 +1,55 @@
+# frozen_string_literal: true
+
+#-- copyright
+# OpenProject is an open source project management software.
+# Copyright (C) the OpenProject GmbH
+#
+# This program is free software; you can redistribute it and/or
+# modify it under the terms of the GNU General Public License version 3.
+#
+# OpenProject is a fork of ChiliProject, which is a fork of Redmine. The copyright follows:
+# Copyright (C) 2006-2013 Jean-Philippe Lang
+# Copyright (C) 2010-2013 the ChiliProject Team
+#
+# This program is free software; you can redistribute it and/or
+# modify it under the terms of the GNU General Public License
+# as published by the Free Software Foundation; either version 2
+# of the License, or (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program; if not, write to the Free Software
+# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
+#
+# See COPYRIGHT and LICENSE files for more details.
+#++
+
+require "spec_helper"
+
+RSpec.describe CustomFields::CommentField, type: :forms do
+  include_context "with rendered custom field input form"
+
+  let(:custom_field) { create(:project_custom_field, :has_comment, name: "Project custom field") }
+
+  it_behaves_like "rendering label", "Comment"
+
+  context "without a value" do
+    it "renders field" do
+      expect(rendered_form).to have_field "Comment", type: :textarea, with: ""
+    end
+  end
+
+  context "with a value" do
+    before do
+      model.update!(custom_field.comment_attribute_name => "hello, world!")
+    end
+
+    it "renders field" do
+      expect(rendered_form).to have_field "Comment", type: :textarea, with: "hello, world!"
+    end
+  end
+end