Merge pull request #234 from Manukam/add-u-tag

added u tag

Author: pascalwengerter

app/concepts/matestack/ui/core/u/u.haml

@@ -0,0 +1,5 @@
+%u{@tag_attributes}
+  - if options[:text].nil? && block_given?
+    = yield
+  - else
+    = options[:text]

app/concepts/matestack/ui/core/u/u.rb

@@ -0,0 +1,6 @@
+module Matestack::Ui::Core::U
+  class U < Matestack::Ui::Core::Component::Static
+  
+  end
+end
+  

docs/components/u.md

@@ -0,0 +1,49 @@
+# matestack core component: Hr
+
+Show [specs](/spec/usage/components/hr_spec.rb)
+
+The HTML `<u>` tag implemented in ruby.
+
+## Parameters
+
+This component can take 2 optional configuration params.
+
+#### # id (optional)
+Expects a string with all ids the u should have.
+
+#### # class (optional)
+Expects a string with all classes the u should have.
+
+## Example 1
+Adding an optional id
+
+```ruby
+div id: "foo", class: "bar" do
+  u id: "u-id"
+end
+```
+
+returns
+
+```html
+<div id="foo" class="bar">
+  <u id="u-id">
+</div>
+```
+
+## Example 2
+Adding an optional class
+
+```ruby
+div id: "foo", class: "bar" do
+  u class: "u-class"
+end
+```
+
+returns
+
+```html
+<div id="foo" class="bar">
+  <u class="u-class">
+</div>
+```

spec/usage/components/u.rb

@@ -0,0 +1,66 @@
+require_relative "../../support/utils"
+include Utils
+
+describe 'u Component', type: :feature, js: true do
+
+  it 'Example 1 - yield, no options[:text]' do
+
+    class ExamplePage < Matestack::Ui::Page
+
+      def response
+        components {
+          # simple u
+          u do
+            plain 'I am simple'
+          end
+
+          # enhanced u
+          u id: 'my-id', class: 'my-class' do
+            plain 'I am enhanced'
+          end
+        }
+      end
+
+    end
+
+    visit '/example'
+
+    static_output = page.html
+
+    expected_static_output = <<~HTML
+    <u>I am simple</u>
+    <u id="my-id" class="my-class">I am enhanced</u>
+    HTML
+
+    expect(stripped(static_output)).to include(stripped(expected_static_output))
+  end
+
+  it 'Example 2 - render options[:text]' do
+
+    class ExamplePage < Matestack::Ui::Page
+
+      def response
+        components {
+          # simple u
+          u text: 'I am simple'
+
+          # enhanced u
+          u id: 'my-id', class: 'my-class', text: 'I am enhanced'
+        }
+      end
+
+    end
+
+    visit '/example'
+
+    static_output = page.html
+
+    expected_static_output = <<~HTML
+    <u>I am simple</u>
+    <u id="my-id" class="my-class">I am enhanced</u>
+    HTML
+
+    expect(stripped(static_output)).to include(stripped(expected_static_output))
+  end
+
+end