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#!/usr/bin/env ruby
# encoding: UTF-8
require File.expand_path('../test_helper', __FILE__)
# Test data
# A
# / \
# B C
# \
# B
class STPT
def a
100.times{b}
300.times{c}
c;c;c
end
def b
sleep 0
end
def c
5.times{b}
end
end
class StackPrinterTest < TestCase
def test_stack_can_be_printed
start_time = Time.now
result = RubyProf::Profile.profile(measure_mode: RubyProf::WALL_TIME) do
5.times{STPT.new.a}
end
end_time = Time.now
expected_time = end_time - start_time
file_contents = nil
file_contents = print(result)
re = /Thread: (\d+)(, Fiber: (\d+))? \([\.0-9]+.[\.0-9]+% ~ ([\.0-9]+)\)/
assert_match(re, file_contents)
file_contents =~ re
actual_time = $4.to_f
assert_in_delta(expected_time, actual_time, 0.1)
end
private
def print(result)
test = caller.first =~ /in `(.*)'/ ? $1 : "test"
testfile_name = "#{Dir.tmpdir}/ruby_prof_#{test}.html"
# puts "printing to #{testfile_name}"
printer = RubyProf::CallStackPrinter.new(result)
File.open(testfile_name, "w") {|f| printer.print(f, :threshold => 0, :min_percent => 0, :title => "ruby_prof #{test}")}
system("open '#{testfile_name}'") if RUBY_PLATFORM =~ /darwin/ && ENV['SHOW_RUBY_PROF_PRINTER_OUTPUT']=="1"
assert File.exist?(testfile_name), "#{testfile_name} does not exist"
assert File.readable?(testfile_name), "#{testfile_name} is no readable"
File.read(testfile_name)
end
end
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