Update time_ago_with_tooltip helper

Minor refactoring, add specs, changes arguments to use keywords.

app/helpers/application_helper.rb

@@ -179,14 +179,33 @@ module ApplicationHelper
     BroadcastMessage.current
   end
 
-  def time_ago_with_tooltip(date, placement = 'top', html_class = 'time_ago')
-    capture_haml do
-      haml_tag :time, date.to_s,
-        class: html_class, datetime: date.getutc.iso8601, title: date.in_time_zone.stamp('Aug 21, 2011 9:23pm'),
+  # Render a `time` element with Javascript-based relative date and tooltip
+  #
+  # time       - Time object
+  # placement  - Tooltip placement String (default: "top")
+  # html_class - Custom class for `time` element (default: "time_ago")
+  # skip_js    - When true, exclude the `script` tag (default: false)
+  #
+  # By default also includes a `script` element with Javascript necessary to
+  # initialize the `timeago` jQuery extension. If this method is called many
+  # times, for example rendering hundreds of commits, it's advisable to disable
+  # this behavior using the `skip_js` argument and re-initializing `timeago`
+  # manually once all of the elements have been rendered.
+  #
+  # A `js-timeago` class is always added to the element, even when a custom
+  # `html_class` argument is provided.
+  #
+  # Returns an HTML-safe String
+  def time_ago_with_tooltip(time, placement: 'top', html_class: 'time_ago', skip_js: false)
+    element = content_tag :time, time.to_s,
+      class: "#{html_class} js-timeago",
+      datetime: time.getutc.iso8601,
+      title: time.in_time_zone.stamp('Aug 21, 2011 9:23pm'),
       data: { toggle: 'tooltip', placement: placement }
 
-      haml_tag :script, "$('." + html_class + "').timeago().tooltip()"
-    end.html_safe
+    element += javascript_tag "$('.js-timeago').timeago()" unless skip_js
+
+    element
   end
 
   def render_markup(file_name, file_content)

app/helpers/issues_helper.rb

@@ -45,13 +45,13 @@ module IssuesHelper
 
   def issue_timestamp(issue)
     # Shows the created at time and the updated at time if different
-    ts = "#{time_ago_with_tooltip(issue.created_at, 'bottom', 'note_created_ago')}"
+    ts = time_ago_with_tooltip(issue.created_at, placement: 'bottom', html_class: 'note_created_ago')
     if issue.updated_at != issue.created_at
       ts << capture_haml do
         haml_tag :span do
           haml_concat '&middot;'
           haml_concat icon('edit', title: 'edited')
-          haml_concat time_ago_with_tooltip(issue.updated_at, 'bottom', 'issue_edited_ago')
+          haml_concat time_ago_with_tooltip(issue.updated_at, placement: 'bottom', html_class: 'issue_edited_ago')
         end
       end
     end

app/helpers/notes_helper.rb

@@ -25,13 +25,13 @@ module NotesHelper
 
   def note_timestamp(note)
     # Shows the created at time and the updated at time if different
-    ts = "#{time_ago_with_tooltip(note.created_at, 'bottom', 'note_created_ago')}"
+    ts = time_ago_with_tooltip(note.created_at, placement: 'bottom', html_class: 'note_created_ago')
     if note.updated_at != note.created_at
       ts << capture_haml do
         haml_tag :span do
           haml_concat '&middot;'
           haml_concat icon('edit', title: 'edited')
-          haml_concat time_ago_with_tooltip(note.updated_at, 'bottom', 'note_edited_ago')
+          haml_concat time_ago_with_tooltip(note.updated_at, placement: 'bottom', html_class: 'note_edited_ago')
         end
       end
     end

app/helpers/projects_helper.rb

@@ -211,7 +211,7 @@ module ProjectsHelper
 
   def project_last_activity(project)
     if project.last_activity_at
-      time_ago_with_tooltip(project.last_activity_at, 'bottom', 'last_activity_time_ago')
+      time_ago_with_tooltip(project.last_activity_at, placement: 'bottom', html_class: 'last_activity_time_ago')
     else
       "Never"
     end

app/views/projects/issues/_issue.html.haml

@@ -28,7 +28,7 @@
           = 0
 
   .issue-info
-    = "##{issue.iid} opened #{time_ago_with_tooltip(issue.created_at, 'bottom')} by #{link_to_member(@project, issue.author, avatar: false)}".html_safe
+    = "##{issue.iid} opened #{time_ago_with_tooltip(issue.created_at, placement: 'bottom')} by #{link_to_member(@project, issue.author, avatar: false)}".html_safe
     - if issue.votes_count > 0
       = render 'votes/votes_inline', votable: issue
     - if issue.milestone
@@ -41,4 +41,4 @@
         = issue.task_status
 
     .pull-right.issue-updated-at
-      %small updated #{time_ago_with_tooltip(issue.updated_at, 'bottom', 'issue_update_ago')}
+      %small updated #{time_ago_with_tooltip(issue.updated_at, placement: 'bottom', html_class: 'issue_update_ago')}

app/views/projects/merge_requests/_merge_request.html.haml

@@ -35,7 +35,7 @@
           = 0
 
   .merge-request-info
-    = "##{merge_request.iid} opened #{time_ago_with_tooltip(merge_request.created_at, 'bottom')} by #{link_to_member(@project, merge_request.author, avatar: false)}".html_safe
+    = "##{merge_request.iid} opened #{time_ago_with_tooltip(merge_request.created_at, placement: 'bottom')} by #{link_to_member(@project, merge_request.author, avatar: false)}".html_safe
     - if merge_request.votes_count > 0
       = render 'votes/votes_inline', votable: merge_request
     - if merge_request.milestone_id?
@@ -48,4 +48,4 @@
         = merge_request.task_status
 
     .pull-right.hidden-xs
-      %small updated #{time_ago_with_tooltip(merge_request.updated_at, 'bottom', 'merge_request_updated_ago')}
+      %small updated #{time_ago_with_tooltip(merge_request.updated_at, placement: 'bottom', html_class: 'merge_request_updated_ago')}

app/views/projects/notes/discussions/_active.html.haml

@@ -16,7 +16,7 @@
       = link_to_member(@project, last_note.author, avatar: false)
 
       %span.discussion-last-update
-        #{time_ago_with_tooltip(last_note.updated_at, 'bottom', 'discussion_updated_ago')}
+        #{time_ago_with_tooltip(last_note.updated_at, placement: 'bottom', html_class: 'discussion_updated_ago')}
 
   .discussion-body.js-toggle-content
     = render "projects/notes/discussions/diff", discussion_notes: discussion_notes, note: note

app/views/projects/notes/discussions/_commit.html.haml

@@ -14,7 +14,7 @@
       last updated by
       = link_to_member(@project, last_note.author, avatar: false)
       %span.discussion-last-update
-        #{time_ago_with_tooltip(last_note.updated_at, 'bottom', 'discussion_updated_ago')}
+        #{time_ago_with_tooltip(last_note.updated_at, placement: 'bottom', html_class: 'discussion_updated_ago')}
   .discussion-body.js-toggle-content
     - if note.for_diff_line?
       = render "projects/notes/discussions/diff", discussion_notes: discussion_notes, note: note

app/views/projects/notes/discussions/_outdated.html.haml

@@ -14,6 +14,6 @@
       last updated by
       = link_to_member(@project, last_note.author, avatar: false)
       %span.discussion-last-update
-        #{time_ago_with_tooltip(last_note.updated_at, 'bottom', 'discussion_updated_ago')}
+        #{time_ago_with_tooltip(last_note.updated_at, placement: 'bottom', html_class: 'discussion_updated_ago')}
   .discussion-body.js-toggle-content.hide
     = render "projects/notes/discussions/diff", discussion_notes: discussion_notes, note: note

spec/helpers/application_helper_spec.rb

@@ -240,6 +240,54 @@ describe ApplicationHelper do
     end
   end
 
+  describe 'time_ago_with_tooltip' do
+    def element(*arguments)
+      time = Time.parse('2015-07-02 08:00')
+      element = time_ago_with_tooltip(time, *arguments)
+
+      Nokogiri::HTML::DocumentFragment.parse(element).first_element_child
+    end
+
+    it 'returns a time element' do
+      expect(element.name).to eq 'time'
+    end
+
+    it 'includes the date string' do
+      expect(element.text).to match %r{2015-07-02 \d{2}:\d{2}:\d{2}}
+    end
+
+    it 'has a datetime attribute' do
+      expect(element.attr('datetime')).to eq '2015-07-02T12:00:00Z'
+    end
+
+    it 'has a formatted title attribute' do
+      expect(element.attr('title')).to eq 'Jul 02, 2015 12:00pm'
+    end
+
+    it 'includes a default js-timeago class' do
+      expect(element.attr('class')).to eq 'time_ago js-timeago'
+    end
+
+    it 'accepts a custom html_class' do
+      expect(element(html_class: 'custom_class').attr('class')).to eq 'custom_class js-timeago'
+    end
+
+    it 'accepts a custom tooltip placement' do
+      expect(element(placement: 'bottom').attr('data-placement')).to eq 'bottom'
+    end
+
+    it 're-initializes timeago Javascript' do
+      el = element.next_element
+
+      expect(el.name).to eq 'script'
+      expect(el.text).to include "$('.js-timeago').timeago()"
+    end
+
+    it 'allows the script tag to be excluded' do
+      expect(element(skip_js: true)).not_to include 'script'
+    end
+  end
+
   describe 'render_markup' do
     let(:content) { 'Noël' }