Merge branch 'sh-disable-unnecessary-avatar-revalidation' into 'master'

Disable project avatar validation if avatar has not changed

Closes #51053

See merge request gitlab-org/gitlab-ce!21506

app/models/concerns/avatarable.rb

@@ -9,7 +9,7 @@ module Avatarable
     include Gitlab::Utils::StrongMemoize
 
     validate :avatar_type, if: ->(user) { user.avatar.present? && user.avatar_changed? }
-    validates :avatar, file_size: { maximum: 200.kilobytes.to_i }
+    validates :avatar, file_size: { maximum: 200.kilobytes.to_i }, if: :avatar_changed?
 
     mount_uploader :avatar, AvatarUploader
 

changelogs/unreleased/sh-disable-unnecessary-avatar-revalidation.yml

+---
+title: Disable project avatar validation if avatar has not changed
+merge_request:
+author:
+type: performance

spec/models/concerns/avatarable_spec.rb

@@ -12,6 +12,26 @@ describe Avatarable do
     stub_config_setting(relative_url_root: relative_url_root)
   end
 
+  describe '#update' do
+    let(:validator) { project._validators[:avatar].detect { |v| v.is_a?(FileSizeValidator) } }
+
+    context 'when avatar changed' do
+      it 'validates the file size' do
+        expect(validator).to receive(:validate_each).and_call_original
+
+        project.update(avatar: 'uploads/avatar.png')
+      end
+    end
+
+    context 'when avatar was not changed' do
+      it 'skips validation of file size' do
+        expect(validator).not_to receive(:validate_each)
+
+        project.update(name: 'Hello world')
+      end
+    end
+  end
+
   describe '#avatar_path' do
     using RSpec::Parameterized::TableSyntax