Merge branch 'fix-build-notification-on-merge-page-change' into 'master'

Fix build notification on merge request page change even if the build status didn't change

## What does this MR do?
This MR contains a bugfix for #17357 which was introduced by !3998. The notification are now only shown on status changes, and not when switching between different merge requests.

## Are there points in the code the reviewer needs to double check?
Check implementation

## Why was this MR needed?
Because auf a bug introduced in !3998.

## What are the relevant issue numbers?
#17357

Closes #17357

See merge request !4086

CHANGELOG

@@ -56,6 +56,9 @@ v 8.7.4
   - Running rake gitlab:db:drop_tables uses "IF EXISTS" as a precaution !4100
   - Use a case-insensitive comparison in sanitizing URI schemes
 
+v 8.7.4
+  - Fix always showing build notification message when switching between merge requests
+
 v 8.7.3
   - Emails, Gitlab::Email::Message, Gitlab::Diff, and Premailer::Adapter::Nokogiri are now instrumented
   - Merge request widget displays TeamCity build state and code coverage correctly again.

app/assets/javascripts/merge_request_widget.js.coffee

@@ -9,11 +9,12 @@ class @MergeRequestWidget
   constructor: (@opts) ->
     $('#modal_merge_info').modal(show: false)
     @firstCICheck = true
-    @readyForCICheck = true
+    @readyForCICheck = false
     clearInterval @fetchBuildStatusInterval
 
     @clearEventListeners()
     @addEventListeners()
+    @getCIStatus(false)
     @pollCIStatus()
     notifyPermissions()
 
@@ -71,7 +72,7 @@ class @MergeRequestWidget
       if data.status is ''
         return
 
-      if @firstCiCheck || data.status isnt @opts.ci_status and data.status?
+      if @firstCICheck || data.status isnt @opts.ci_status and data.status?
         @opts.ci_status = data.status
         @showCIStatus data.status
         if data.coverage
@@ -79,7 +80,7 @@ class @MergeRequestWidget
 
         # The first check should only update the UI, a notification
         # should only be displayed on status changes
-        if showNotification and not @firstCiCheck
+        if showNotification and not @firstCICheck
           status = @ciLabelForStatus(data.status)
 
           if status is "preparing"
@@ -102,7 +103,7 @@ class @MergeRequestWidget
               @close()
               Turbolinks.visit _this.opts.builds_path
           )
-        @firstCiCheck = false
+        @firstCICheck = false
 
   showCIStatus: (state) ->
     $('.ci_widget').hide()

app/views/projects/merge_requests/widget/_heading.html.haml

@@ -42,8 +42,3 @@
     .ci_widget.ci-error{style: "display:none"}
       = icon("times-circle")
       Could not connect to the CI server. Please check your settings and try again.
-
-  :javascript
-    $(function() {
-      merge_request_widget.getCIStatus(false);
-    });

spec/javascripts/merge_request_widget_spec.js.coffee

@@ -47,3 +47,9 @@ describe 'MergeRequestWidget', ->
       spy = spyOn(@class, 'showCICoverage').and.stub()
       @class.getCIStatus(false)
       expect(spy).not.toHaveBeenCalled()
+
+    it 'should not display a notification on the first check after the widget has been created', ->
+      spy = spyOn(window, 'notify')
+      @class = new MergeRequestWidget(@opts)
+      @class.getCIStatus(true)
+      expect(spy).not.toHaveBeenCalled()