Merge branch 'determinstic_dns_specs' into 'master'

Have deterministic DNS for specs

See merge request gitlab-org/gitlab-ce!31086

Gemfile

@@ -388,7 +388,6 @@ group :test do
   gem 'json-schema', '~> 2.8.0'
   gem 'webmock', '~> 3.5.1'
   gem 'rails-controller-testing'
-  gem 'sham_rack', '~> 1.3.6'
   gem 'concurrent-ruby', '~> 1.1'
   gem 'test-prof', '~> 0.2.5'
   gem 'rspec_junit_formatter'

Gemfile.lock

@@ -884,8 +884,6 @@ GEM
       faraday (>= 0.7.6, < 1.0)
     settingslogic (2.0.9)
     sexp_processor (4.12.0)
-    sham_rack (1.3.6)
-      rack
     shoulda-matchers (4.0.1)
       activesupport (>= 4.2.0)
     sidekiq (5.2.7)
@@ -1232,7 +1230,6 @@ DEPENDENCIES
   selenium-webdriver (~> 3.141)
   sentry-raven (~> 2.9)
   settingslogic (~> 2.0.9)
-  sham_rack (~> 1.3.6)
   shoulda-matchers (~> 4.0.1)
   sidekiq (~> 5.2.7)
   sidekiq-cron (~> 1.0)

lib/container_registry/client.rb

@@ -82,7 +82,10 @@ module ContainerRegistry
     def redirect_response(location)
       return unless location
 
-      faraday_redirect.get(location)
+      uri = URI(@base_uri).merge(location)
+      raise ArgumentError, "Invalid scheme for #{location}" unless %w[http https].include?(uri.scheme)
+
+      faraday_redirect.get(uri)
     end
 
     def faraday

spec/lib/container_registry/blob_spec.rb

@@ -112,11 +112,28 @@ describe ContainerRegistry::Blob do
         end
       end
 
+      context 'for a relative address' do
+        before do
+          stub_request(:get, 'http://registry.gitlab/relative')
+            .with { |request| !request.headers.include?('Authorization') }
+            .to_return(
+              status: 200,
+              headers: { 'Content-Type' => 'application/json' },
+              body: '{"key":"value"}')
+        end
+
+        let(:location) { '/relative' }
+
+        it 'returns correct data' do
+          expect(blob.data).to eq '{"key":"value"}'
+        end
+      end
+
       context 'for invalid file' do
         let(:location) { 'file:///etc/passwd' }
 
         it 'raises an error' do
-          expect { blob.data }.to raise_error(ArgumentError, 'invalid address')
+          expect { blob.data }.to raise_error(ArgumentError, 'Invalid scheme for file:///etc/passwd')
         end
       end
     end

spec/lib/gitlab/http_connection_adapter_spec.rb

@@ -3,7 +3,13 @@
 require 'spec_helper'
 
 describe Gitlab::HTTPConnectionAdapter do
+  include StubRequests
+
   describe '#connection' do
+    before do
+      stub_all_dns('https://example.org', ip_address: '93.184.216.34')
+    end
+
     context 'when local requests are not allowed' do
       it 'sets up the connection' do
         uri = URI('https://example.org')

spec/services/projects/download_service_spec.rb

@@ -20,13 +20,8 @@ describe Projects::DownloadService do
 
     context 'for URLs that are on the whitelist' do
       before do
-        sham_rack_app = ShamRack.at('mycompany.fogbugz.com').stub
-        sham_rack_app.register_resource('/rails_sample.jpg', File.read(Rails.root + 'spec/fixtures/rails_sample.jpg'), 'image/jpg')
-        sham_rack_app.register_resource('/doc_sample.txt', File.read(Rails.root + 'spec/fixtures/doc_sample.txt'), 'text/plain')
-      end
-
-      after do
-        ShamRack.unmount_all
+        stub_request(:get, 'http://mycompany.fogbugz.com/rails_sample.jpg').to_return(body: File.read(Rails.root + 'spec/fixtures/rails_sample.jpg'))
+        stub_request(:get, 'http://mycompany.fogbugz.com/doc_sample.txt').to_return(body: File.read(Rails.root + 'spec/fixtures/doc_sample.txt'))
       end
 
       context 'an image file' do

spec/support/helpers/stub_requests.rb

@@ -28,6 +28,19 @@ module StubRequests
                          .and_return([addr])
   end
 
+  def stub_all_dns(url, ip_address:)
+    url = URI(url)
+    port = 80 # arbitarily chosen, does not matter as we are not going to connect
+    socket = Socket.sockaddr_in(port, ip_address)
+    addr = Addrinfo.new(socket)
+
+    # See Gitlab::UrlBlocker
+    allow(Addrinfo).to receive(:getaddrinfo).and_call_original
+    allow(Addrinfo).to receive(:getaddrinfo)
+      .with(url.hostname, anything, nil, :STREAM)
+      .and_return([addr])
+  end
+
   def stubbed_hostname(url, hostname: IP_ADDRESS_STUB)
     url = parse_url(url)
     url.hostname = hostname