Stub Gitlab::JobWaiter#wait for tests

spec/lib/gitlab/job_waiter_spec.rb

@@ -19,6 +19,10 @@ RSpec.describe Gitlab::JobWaiter do
   describe '#wait' do
     let(:waiter) { described_class.new(2) }
 
+    before do
+      allow_any_instance_of(described_class).to receive(:wait).and_call_original
+    end
+
     it 'returns when all jobs have been completed' do
       described_class.notify(waiter.key, 'a')
       described_class.notify(waiter.key, 'b')

spec/spec_helper.rb

@@ -233,6 +233,12 @@ RSpec.configure do |config|
     # expect(Gitlab::Git::KeepAround).to receive(:execute).and_call_original
     allow(Gitlab::Git::KeepAround).to receive(:execute)
 
+    # Stub these calls due to being expensive operations
+    # It can be reenabled for specific tests via:
+    #
+    # expect(Gitlab::JobWaiter).to receive(:wait).and_call_original
+    allow_any_instance_of(Gitlab::JobWaiter).to receive(:wait)
+
     Gitlab::ProcessMemoryCache.cache_backend.clear
 
     Sidekiq::Worker.clear_all