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#!/usr/bin/env ruby
# encoding: UTF-8
require File.expand_path('../test_helper', __FILE__)
Minitest::Test.i_suck_and_my_tests_are_order_dependent!
class GcTest < TestCase
def setup
super
GC.stress = true
end
def teardown
GC.stress = false
end
def some_method
Array.new(3 * 4)
end
def run_profile
RubyProf::Profile.profile do
self.some_method
end
end
def test_hold_onto_thread
threads = 5.times.reduce(Array.new) do |array, i|
array.concat(run_profile.threads)
array
end
GC.start
threads.each do |thread|
refute_nil(thread.id)
end
end
def test_hold_onto_method
methods = 5.times.reduce(Array.new) do |array, i|
profile = run_profile
array.concat(profile.threads.map(&:methods).flatten)
array
end
GC.start
methods.each do |method|
refute_nil(method.method_name)
end
end
def test_hold_onto_call_trees
method_call_infos = 5.times.reduce(Array.new) do |array, i|
profile = run_profile
call_trees = profile.threads.map(&:methods).flatten.map(&:call_trees).flatten
array.concat(call_trees)
array
end
GC.start
method_call_infos.each do |call_trees|
refute_empty(call_trees.call_trees)
end
end
def test_hold_onto_measurements
# Run a profile
profile = run_profile
# Get measurement objects
measurements = profile.threads.map(&:methods).flatten.map(&:measurement)
# Free the profiles which frees the measurements
profile = nil
GC.start
measurements.each_with_index do |measurement|
error = assert_raises(RuntimeError) do
measurement.total_time
end
assert_match(/RubyProf::Measurement instance has already been freed/, error.message)
end
assert(true)
end
def test_hold_onto_root_call_tree
call_trees = 5.times.reduce(Array.new) do |array, i|
array.concat(run_profile.threads.map(&:call_tree))
array
end
GC.start
call_trees.each do |call_tree|
refute_nil(call_tree.source_file)
end
end
end
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