add test for progress core component

Author: pascalwengerter

spec/usage/components/progress_spec.rb

@@ -0,0 +1,33 @@
+require_relative '../../support/utils'
+include Utils
+
+describe 'Progress Component', type: :feature, js: true do
+
+  it 'Example 1' do
+
+    class ExamplePage < Page::Cell::Page
+
+      def response
+        components {
+          # simple progress bar
+          progress value: 75, max: 100
+          # enhanced progress bar
+          progress id: 'my-id', class: 'my-class', value: 33, max: 330
+        }
+      end
+
+    end
+
+    visit '/example'
+
+    static_output = page.html
+
+    expected_static_output = <<~HTML
+    <progress max="100" value="75"></progress>
+    <progress id="my-id" max="330" value="33" class="my-class"></progress>
+    HTML
+
+    expect(stripped(static_output)).to include(stripped(expected_static_output))
+  end
+
+end