1 files changed, 32 insertions, 0 deletions
diff --git a/spec/support/shared_contexts/lib/gitlab/middleware/with_a_mocked_gitlab_instance_shared_context.rb b/spec/support/shared_contexts/lib/gitlab/middleware/with_a_mocked_gitlab_instance_shared_context.rb
new file mode 100644
index 00000000000..3830b89f1ff
--- /dev/null
+++ b/spec/support/shared_contexts/lib/gitlab/middleware/with_a_mocked_gitlab_instance_shared_context.rb
@@ -0,0 +1,32 @@
+# frozen_string_literal: true
+
+RSpec.shared_context 'with a mocked GitLab instance' do
+  let(:rack_stack) do
+    rack = Rack::Builder.new do
+      use ActionDispatch::Session::CacheStore
+      use ActionDispatch::Flash
+    end
+
+    rack.run(subject)
+    rack.to_app
+  end
+
+  let(:observe_env) do
+    Module.new do
+      attr_reader :env
+
+      def call(env)
+        @env = env
+        super
+      end
+    end
+  end
+
+  let(:request) { Rack::MockRequest.new(rack_stack) }
+
+  subject do
+    described_class.new(fake_app).tap do |app|
+      app.extend(observe_env)
+    end
+  end
+end