Fix "Reload with full diff" URL button in compare branch view

This button worked when viewing merge requests because the JavaScript
stripped the .html in the Ajax request. However, it left the .html suffix
in the compare branch view.

4 files changed, 9 insertions, 1 deletions

diff --git a/CHANGELOG b/CHANGELOG
index 7eb6ab81dd9..4e165362692 100644
--- a/CHANGELOG
+++ b/CHANGELOG
@@ -1,6 +1,7 @@
 Please view this file on the master branch, on stable branches it's out of date.
 
 v 8.0.0 (unreleased)
+  - Fix "Reload with full diff" URL button in compare branch view (Stan Hu)
   - Remove user OAuth tokens from the database and request new tokens each session (Stan Hu)
   - Only show recent push event if the branch still exists or a recent merge request has not been created (Stan Hu)
   - Remove satellites
diff --git a/app/views/projects/diffs/_warning.html.haml b/app/views/projects/diffs/_warning.html.haml
index caed0e69dc8..f99bc9a85eb 100644
--- a/app/views/projects/diffs/_warning.html.haml
+++ b/app/views/projects/diffs/_warning.html.haml
@@ -3,7 +3,7 @@
     Too many changes to show.
     .pull-right
       - unless diff_hard_limit_enabled?
-        = link_to "Reload with full diff", url_for(params.merge(force_show_diff: true, format: :html)), class: "btn btn-sm btn-warning"
+        = link_to "Reload with full diff", url_for(params.merge(force_show_diff: true, format: nil)), class: "btn btn-sm btn-warning"
 
       - if current_controller?(:commit) or current_controller?(:merge_requests)
         - if current_controller?(:commit)
diff --git a/features/project/commits/commits.feature b/features/project/commits/commits.feature
index c4b206edc95..3ebc8a39aae 100644
--- a/features/project/commits/commits.feature
+++ b/features/project/commits/commits.feature
@@ -41,6 +41,7 @@ Feature: Project Commits
   Scenario: I browse big commit
     Given I visit big commit page
     Then I see big commit warning
+    And I see "Reload with full diff" link
 
   Scenario: I browse a commit with an image
     Given I visit a commit with an image that changed
diff --git a/features/steps/project/commits/commits.rb b/features/steps/project/commits/commits.rb
index e6330ec457e..a8532cc18d8 100644
--- a/features/steps/project/commits/commits.rb
+++ b/features/steps/project/commits/commits.rb
@@ -79,6 +79,12 @@ class Spinach::Features::ProjectCommits < Spinach::FeatureSteps
     expect(page).to have_content "Too many changes"
   end
 
+  step 'I see "Reload with full diff" link' do
+    link = find_link('Reload with full diff')
+    expect(link[:href]).to end_with('?force_show_diff=true')
+    expect(link[:href]).not_to include('.html')
+  end
+
   step 'I visit a commit with an image that changed' do
     visit namespace_project_commit_path(@project.namespace, @project, sample_image_commit.id)
   end