feat: API: expose quill editor query functions

spec/system/quill_js_spec.rb

@@ -7,4 +7,59 @@ RSpec.describe 'Quill JS' do
     expect(page.evaluate_script('typeof Quill')).to eq 'function'
     expect(page.evaluate_script('Quill.version')).to eq(ActiveAdmin::QuillEditor::QUILL_VERSION)
   end
+
+  describe '.getQuillEditors' do
+    let(:author) { Author.create!(email: 'some_email@example.com', name: 'John Doe', age: 30) }
+    let!(:post) { Post.create!(title: 'Test', author: author, description: '') }
+
+    before do
+      path = edit_admin_post_path(post)
+      Admin::Posts::EditPage.new(path: path).load
+    end
+
+    it "returns the available editors", :aggregate_failures do
+      editors_count = page.evaluate_script('window.getQuillEditors().length')
+      expect(editors_count).to eq 2
+
+      expected_element = find('#post_summary > .ql-container')
+      first_editor = page.evaluate_script('window.getQuillEditors()[0].container')
+      expect(first_editor).to eq expected_element
+
+      expected_element = find('#post_description > .ql-container')
+      first_editor = page.evaluate_script('window.getQuillEditors()[1].container')
+      expect(first_editor).to eq expected_element
+    end
+  end
+
+  describe '.getQuillEditorByIndex' do
+    let(:author) { Author.create!(email: 'some_email@example.com', name: 'John Doe', age: 30) }
+    let!(:post) { Post.create!(title: 'Test', author: author, description: '') }
+
+    before do
+      path = edit_admin_post_path(post)
+      Admin::Posts::EditPage.new(path: path).load
+    end
+
+    it "returns the expected editor instance" do
+      expected_element = find('#post_description > .ql-container')
+      editor = page.evaluate_script('window.getQuillEditorByIndex(1).container')
+      expect(editor).to eq expected_element
+    end
+  end
+
+  describe '.getQuillEditorByElementId' do
+    let(:author) { Author.create!(email: 'some_email@example.com', name: 'John Doe', age: 30) }
+    let!(:post) { Post.create!(title: 'Test', author: author, description: '') }
+
+    before do
+      path = edit_admin_post_path(post)
+      Admin::Posts::EditPage.new(path: path).load
+    end
+
+    it "returns the expected editor instance" do
+      expected_element = find('#post_description > .ql-container')
+      editor = page.evaluate_script('window.getQuillEditorByElementId("post_description").container')
+      expect(editor).to eq expected_element
+    end
+  end
 end