therubyracer/spec/mem/blunt_spec.rb

require 'spec_helper'

describe "A Very blunt test to make sure that we aren't doing stupid leaks" do
  before do
    #allocate a single context to make sure that v8 loads its snapshot and
    #we pay the overhead.
    V8::Context.new
    @start_memory = process_memory
    GC.stress = true
  end

  after do
    GC.stress = false
  end
  it "won't increase process memory by more than 20% no matter how many contexts we create" do
    5000.times do
       V8::Context.new
       gc_completely
    end
    process_memory.should <= @start_memory * 1.2
  end

  def process_memory
    /\w*[ ]*#{Process.pid}[ ]*([.,\d]*)[ ]*([.,\d]*)[ ]*([\d]*)[ ]*([\d]*)/.match(`ps aux`)[4].to_i
  end

  def gc_completely
    loop while !V8::C::V8::IdleNotification()
  end

end