1 files changed, 32 insertions, 2 deletions
diff --git a/spec/views/projects/commits/show.html.haml_spec.rb b/spec/views/projects/commits/show.html.haml_spec.rb
index e5e9906a798..9393ba046dc 100644
--- a/spec/views/projects/commits/show.html.haml_spec.rb
+++ b/spec/views/projects/commits/show.html.haml_spec.rb
@@ -3,8 +3,10 @@
 require 'spec_helper'
 
 RSpec.describe 'projects/commits/show.html.haml' do
-  let(:project) { create(:project, :repository) }
-  let(:commits) { [project.commit] }
+  let_it_be(:project) { create(:project, :repository) }
+
+  let(:commits) { [commit] }
+  let(:commit) { project.commit }
   let(:path) { 'path/to/doc.md' }
 
   before do
@@ -32,4 +34,32 @@ RSpec.describe 'projects/commits/show.html.haml' do
       expect(rendered).to have_link(href: "#{project_commits_path(project, path)}?format=atom")
     end
   end
+
+  context 'commits date headers' do
+    let(:user) { build(:user, timezone: timezone) }
+    let(:committed_date) { Time.find_zone('UTC').parse('2023-01-01') }
+
+    before do
+      allow(view).to receive(:current_user).and_return(user)
+      allow(commit).to receive(:committed_date).and_return(committed_date)
+
+      render
+    end
+
+    context 'when timezone is UTC' do
+      let(:timezone) { 'UTC' }
+
+      it "renders commit date header in user's timezone" do
+        expect(rendered).to include('data-day="2023-01-01"')
+      end
+    end
+
+    context 'when timezone is UTC-6' do
+      let(:timezone) { 'America/Mexico_City' }
+
+      it "renders commit date header in user's timezone" do
+        expect(rendered).to include('data-day="2022-12-31"')
+      end
+    end
+  end
 end