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#!/usr/bin/env ruby
# encoding: UTF-8
require File.expand_path('../test_helper', __FILE__)
class MeasureCpuTimeTest < TestCase
def setup
RubyProf::measure_mode = RubyProf::CPU_TIME
end
def teardown
RubyProf::measure_mode = RubyProf::WALL_TIME
end
def test_mode
assert_equal(RubyProf::CPU_TIME, RubyProf::measure_mode)
end
def test_cpu_time_enabled_defined
assert(defined?(RubyProf::CPU_TIME_ENABLED))
end
def test_class_methods
result = RubyProf.profile do
RubyProf::C7.busy_wait
end
# Length should be greater 2:
# MeasureCpuTimeTest#test_class_methods
# <Class::RubyProf::C1>#busy_wait
# ....
methods = result.threads.first.methods.sort.reverse[0..1]
assert_equal(2, methods.length)
# Check the names
assert_equal('MeasureCpuTimeTest#test_class_methods', methods[0].full_name)
assert_equal('<Class::RubyProf::C7>#busy_wait', methods[1].full_name)
# Check times
assert_in_delta(0.1, methods[0].total_time, 0.05)
assert_in_delta(0, methods[0].wait_time, 0.05)
assert_in_delta(0, methods[0].self_time, 0.05)
assert_in_delta(0.1, methods[1].total_time, 0.05)
assert_in_delta(0, methods[1].wait_time, 0.05)
assert_in_delta(0, methods[1].self_time, 0.05)
end
def test_instance_methods
result = RubyProf.profile do
RubyProf::C7.new.busy_wait
end
methods = result.threads.first.methods.sort.reverse[0..1]
assert_equal(2, methods.length)
# Methods at this point:
# MeasureCpuTimeTest#test_instance_methods
# C7#busy_wait
# ...
names = methods.map(&:full_name)
assert_equal('MeasureCpuTimeTest#test_instance_methods', names[0])
assert_equal('RubyProf::C7#busy_wait', names[1])
# Check times
assert_in_delta(0.2, methods[0].total_time, 0.03)
assert_in_delta(0, methods[0].wait_time, 0.03)
assert_in_delta(0, methods[0].self_time, 0.03)
assert_in_delta(0.2, methods[1].total_time, 0.03)
assert_in_delta(0, methods[1].wait_time, 0.03)
assert_in_delta(0, methods[1].self_time, 0.2)
end
def test_module_methods
result = RubyProf.profile do
RubyProf::C8.busy_wait
end
# Methods:
# MeasureCpuTimeTest#test_module_methods
# M1#busy_wait
# ...
methods = result.threads.first.methods.sort.reverse[0..1]
assert_equal(2, methods.length)
assert_equal('MeasureCpuTimeTest#test_module_methods', methods[0].full_name)
assert_equal('RubyProf::M7#busy_wait', methods[1].full_name)
# Check times
assert_in_delta(0.3, methods[0].total_time, 0.1)
assert_in_delta(0, methods[0].wait_time, 0.02)
assert_in_delta(0, methods[0].self_time, 0.02)
assert_in_delta(0.3, methods[1].total_time, 0.1)
assert_in_delta(0, methods[1].wait_time, 0.02)
assert_in_delta(0, methods[1].self_time, 0.1)
end
def test_module_instance_methods
result = RubyProf.profile do
RubyProf::C8.new.busy_wait
end
# Methods:
# MeasureCpuTimeTest#test_module_instance_methods
# M7#busy_wait
# ...
methods = result.threads.first.methods.sort.reverse[0..1]
assert_equal(2, methods.length)
names = methods.map(&:full_name)
assert_equal('MeasureCpuTimeTest#test_module_instance_methods', names[0])
assert_equal('RubyProf::M7#busy_wait', names[1])
# Check times
assert_in_delta(0.3, methods[0].total_time, 0.1)
assert_in_delta(0, methods[0].wait_time, 0.1)
assert_in_delta(0, methods[0].self_time, 0.1)
assert_in_delta(0.3, methods[1].total_time, 0.1)
assert_in_delta(0, methods[1].wait_time, 0.01)
assert_in_delta(0, methods[1].self_time, 0.1)
end
def test_singleton
c3 = RubyProf::C3.new
class << c3
def busy_wait
end
end
result = RubyProf.profile do
c3.busy_wait
end
methods = result.threads.first.methods.sort.reverse
assert_equal(2, methods.length)
assert_equal('MeasureCpuTimeTest#test_singleton', methods[0].full_name)
assert_equal('<Object::RubyProf::C3>#busy_wait', methods[1].full_name)
assert_in_delta(0, methods[0].total_time, 0.01)
assert_in_delta(0, methods[0].wait_time, 0.01)
assert_in_delta(0, methods[0].self_time, 0.01)
assert_in_delta(0, methods[1].total_time, 0.01)
assert_in_delta(0, methods[1].wait_time, 0.01)
assert_in_delta(0, methods[1].self_time, 0.01)
end
def test_sleeping_does_accumulate_wall_time
RubyProf::measure_mode = RubyProf::WALL_TIME
result = RubyProf.profile do
sleep 0.1
end
methods = result.threads.first.methods.sort.reverse
assert_equal(["MeasureCpuTimeTest#test_sleeping_does_accumulate_wall_time", "Kernel#sleep"], methods.map(&:full_name))
assert_in_delta(0.1, methods[1].total_time, 0.01)
assert_equal(0, methods[1].wait_time)
assert_in_delta(0.1, methods[1].self_time, 0.01)
end
def test_sleeping_does_not_accumulate_significant_cpu_time
result = RubyProf.profile do
sleep 0.1
end
methods = result.threads.first.methods.sort.reverse
assert_equal(["MeasureCpuTimeTest#test_sleeping_does_not_accumulate_significant_cpu_time", "Kernel#sleep"], methods.map(&:full_name))
assert_in_delta(0, methods[1].total_time, 0.01)
assert_equal(0, methods[1].wait_time)
assert_in_delta(0, methods[1].self_time, 0.01)
end
def test_waiting_for_threads_does_not_accumulate_cpu_time
background_thread = nil
result = RubyProf.profile do
background_thread = Thread.new{ sleep 0.1 }
background_thread.join
end
# check number of threads
assert_equal(2, result.threads.length)
fg, bg = result.threads
assert(fg.methods.map(&:full_name).include?("Thread#join"))
assert(bg.methods.map(&:full_name).include?("Kernel#sleep"))
assert_in_delta(0, fg.total_time, 0.01)
assert_in_delta(0, bg.total_time, 0.01)
end
def test_waiting_for_threads_does_accumulate_wall_time
RubyProf::measure_mode = RubyProf::WALL_TIME
background_thread = nil
result = RubyProf.profile do
background_thread = Thread.new{ sleep 0.1 }
background_thread.join
end
# check number of threads
assert_equal(2, result.threads.length)
fg, bg = result.threads
assert(fg.methods.map(&:full_name).include?("Thread#join"))
assert(bg.methods.map(&:full_name).include?("Kernel#sleep"))
assert_in_delta(0.1, fg.total_time, 0.01)
assert_in_delta(0.1, fg.wait_time, 0.01)
assert_in_delta(0.1, bg.total_time, 0.01)
end
end
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