diff options
Diffstat (limited to 'spec/lib/peek/views/memory_spec.rb')
-rw-r--r-- | spec/lib/peek/views/memory_spec.rb | 53 |
1 files changed, 53 insertions, 0 deletions
diff --git a/spec/lib/peek/views/memory_spec.rb b/spec/lib/peek/views/memory_spec.rb new file mode 100644 index 00000000000..1f88aadfc54 --- /dev/null +++ b/spec/lib/peek/views/memory_spec.rb @@ -0,0 +1,53 @@ +# frozen_string_literal: true + +require 'spec_helper' + +RSpec.describe Peek::Views::Memory, :request_store do + subject! { described_class.new } + + before do + stub_memory_instrumentation + end + + context 'with process_action.action_controller notification' do + it 'returns empty results when it has not yet fired' do + expect(subject.results).to eq({}) + end + + it 'returns memory instrumentation data when it has fired' do + publish_notification + + expect(subject.results[:calls]).to eq('2 MB') + expect(subject.results[:details]).to all(have_key(:item_header)) + expect(subject.results[:details]).to all(have_key(:item_content)) + expect(subject.results[:summary]).to include('Objects allocated' => '200 k') + expect(subject.results[:summary]).to include('Allocator calls' => '500') + expect(subject.results[:summary]).to include('Large allocations' => '1 KB') + end + end + + def stub_memory_instrumentation + start_memory = { + total_malloc_bytes: 1, + total_mallocs: 2, + total_allocated_objects: 3 + } + allow(Gitlab::Memory::Instrumentation).to receive(:start_thread_memory_allocations).and_return(start_memory) + allow(Gitlab::Memory::Instrumentation).to receive(:measure_thread_memory_allocations).with(start_memory).and_return({ + mem_total_bytes: 2_097_152, + mem_bytes: 1024, + mem_mallocs: 500, + mem_objects: 200_000 + }) + Gitlab::InstrumentationHelper.init_instrumentation_data + end + + def publish_notification + headers = double + allow(headers).to receive(:env).and_return('action_dispatch.request_id': 'req-42') + + ActiveSupport::Notifications.publish( + 'process_action.action_controller', Time.current - 1.second, Time.current, 'id', headers: headers + ) + end +end |