Commit f7ac5384 authored by Tim Zallmann's avatar Tim Zallmann Committed by Clement Ho

DNS Prefetching + Preconnect of assets_host (CDN Domain)

parent 2fbafe1a
......@@ -3,6 +3,11 @@
- site_name = "GitLab"
%head{ prefix: "og: http://ogp.me/ns#" }
%meta{ charset: "utf-8" }
- if Feature.enabled?('asset_host_prefetch') && ActionController::Base.asset_host
%link{ rel: 'dns-prefetch', href: ActionController::Base.asset_host }
%link{ rel: 'preconnnect', href: ActionController::Base.asset_host, crossorigin: '' }
%meta{ 'http-equiv' => 'X-UA-Compatible', content: 'IE=edge' }
-# Open Graph - http://ogp.me/
......
---
title: DNS prefetching if asset_host for CDN hosting is set
merge_request: 20781
author:
type: performance
......@@ -29,6 +29,39 @@ describe 'layouts/_head' do
expect(rendered).to match(%{content="foo" http-equiv="refresh"})
end
context 'when an asset_host is set and feature is activated in the config it will' do
let(:asset_host) { 'http://assets' }
before do
stub_feature_flags(asset_host_prefetch: true)
allow(ActionController::Base).to receive(:asset_host).and_return(asset_host)
end
it 'add a link dns-prefetch tag' do
render
expect(rendered).to match('<link href="http://assets" rel="dns-prefetch">')
end
it 'add a link preconnect tag' do
render
expect(rendered).to match('<link crossorigin="" href="http://assets" rel="preconnnect">')
end
end
context 'when an asset_host is set and feature is not activated in the config it will' do
let(:asset_host) { 'http://assets' }
before do
stub_feature_flags(asset_host_prefetch: false)
allow(ActionController::Base).to receive(:asset_host).and_return(asset_host)
end
it 'not add a link dns-prefetch tag' do
render
expect(rendered).not_to match('<link href="http://assets" rel="dns-prefetch">')
end
end
def stub_helper_with_safe_string(method)
allow_any_instance_of(PageLayoutHelper).to receive(method)
.and_return(%q{foo" http-equiv="refresh}.html_safe)
......
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