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require_relative '../../spec_helper'
describe "Process.times" do
it "returns a Process::Tms" do
Process.times.should be_kind_of(Process::Tms)
end
it "returns current cpu times" do
t = Process.times
user = t.utime
1 until Process.times.utime > user
Process.times.utime.should > user
end
ruby_version_is "2.5" do
platform_is_not :windows do
it "uses getrusage when available to improve precision beyond milliseconds" do
gettimes = 100.times.map { Process.clock_gettime(:GETRUSAGE_BASED_CLOCK_PROCESS_CPUTIME_ID) }
if gettimes.count { |t| ((t * 1e6).to_i % 1000) > 0 } == 0
skip "getrusage is not supported on this environment"
end
times = 100.times.map { Process.times }
# Creating custom matcher to show a debug message to investigate random failure
# on Debian ci.rvm.jp like: https://gist.github.com/ko1/346983a66ba66cf288249383ca30f15a
larger_than_0 = Class.new do
def initialize(expected, times:, gettimes:)
@expected = expected
@times = times
@gettimes = gettimes
end
def matches?(actual)
@actual = actual
@actual > @expected
end
def failure_message
["Expected #{@actual} > #{@expected}",
"to be truthy but was false. (times: #{pp(@times)}, gettimes: #{pp(@gettimes)})"]
end
alias :negative_failure_message :failure_message
private def pp(obj)
require 'pp'
PP.pp(obj, '')
end
end.new(0, times: times, gettimes: gettimes)
times.count { |t| ((t.utime * 1e6).to_i % 1000) > 0 }.should(larger_than_0)
times.count { |t| ((t.stime * 1e6).to_i % 1000) > 0 }.should(larger_than_0)
end
end
end
end
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