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Versions: 13
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Stored size: 1.91 KB
Contents
require 'spec_helper'
require_relative '../../support/mocks/fake_gc_profiler'
describe Appsignal::GarbageCollectionProfiler do
let(:internal_profiler) { FakeGCProfiler.new }
before do
allow_any_instance_of(Appsignal::GarbageCollectionProfiler)
.to receive(:internal_profiler)
.and_return(internal_profiler)
end
it "should have a total time of 0" do
expect(Appsignal::GarbageCollectionProfiler.new.total_time).to eq(0)
end
describe "after a GC run" do
before do
internal_profiler.total_time = 0.12345
@profiler = Appsignal::GarbageCollectionProfiler.new
end
it "should take the total time from Ruby's GC::Profiler" do
expect(@profiler.total_time).to eq(123)
end
it "should clear Ruby's GC::Profiler" do
expect(internal_profiler).to receive(:clear)
@profiler.total_time
end
end
describe "when the total GC time becomes too high" do
it "should reset" do
profiler = Appsignal::GarbageCollectionProfiler.new
internal_profiler.total_time = 2_147_483_647
expect(profiler.total_time).to eq(0)
end
end
describe "after multiple GC runs" do
it "should add all times from Ruby's GC::Profiler together" do
profiler = Appsignal::GarbageCollectionProfiler.new
2.times do
internal_profiler.total_time = 0.12345
profiler.total_time
end
expect(profiler.total_time).to eq(246)
end
end
describe "in multiple threads, with a slow GC::Profiler" do
it "should not count garbage collection times twice" do
threads, results = [], []
internal_profiler.clear_delay = 0.001
internal_profiler.total_time = 0.12345
2.times do
threads << Thread.new do
profiler = Appsignal::GarbageCollectionProfiler.new
results << profiler.total_time
end
end
threads.each(&:join)
expect(results).to eq([123, 0])
end
end
end
Version data entries
13 entries across 13 versions & 1 rubygems