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require_relative '../../spec_helper'
require_relative '../fiber/fixtures/scheduler'
describe "Kernel#sleep" do
it "is a private method" do
Kernel.should have_private_instance_method(:sleep)
end
it "returns an Integer" do
sleep(0.001).should be_kind_of(Integer)
end
it "accepts a Float" do
sleep(0.001).should >= 0
end
it "accepts an Integer" do
sleep(0).should >= 0
end
it "accepts a Rational" do
sleep(Rational(1, 999)).should >= 0
end
it "accepts any Object that responds to divmod" do
o = Object.new
def o.divmod(*); [0, 0.001]; end
sleep(o).should >= 0
end
it "raises an ArgumentError when passed a negative duration" do
-> { sleep(-0.1) }.should raise_error(ArgumentError)
-> { sleep(-1) }.should raise_error(ArgumentError)
end
it "raises a TypeError when passed a String" do
-> { sleep('2') }.should raise_error(TypeError)
end
it "pauses execution indefinitely if not given a duration" do
running = false
t = Thread.new do
running = true
sleep
5
end
Thread.pass until running
Thread.pass while t.status and t.status != "sleep"
t.wakeup
t.value.should == 5
end
it "sleeps with nanosecond precision" do
start_time = Process.clock_gettime(Process::CLOCK_MONOTONIC)
100.times do
sleep(0.0001)
end
end_time = Process.clock_gettime(Process::CLOCK_MONOTONIC)
actual_duration = end_time - start_time
actual_duration.should > 0.01 # 100 * 0.0001 => 0.01
end
ruby_version_is ""..."3.3" do
it "raises a TypeError when passed nil" do
-> { sleep(nil) }.should raise_error(TypeError)
end
end
ruby_version_is "3.3" do
it "accepts a nil duration" do
running = false
t = Thread.new do
running = true
sleep(nil)
5
end
Thread.pass until running
Thread.pass while t.status and t.status != "sleep"
t.wakeup
t.value.should == 5
end
end
context "Kernel.sleep with Fiber scheduler" do
before :each do
Fiber.set_scheduler(FiberSpecs::LoggingScheduler.new)
end
after :each do
Fiber.set_scheduler(nil)
end
it "calls the scheduler without arguments when no duration is given" do
sleeper = Fiber.new(blocking: false) do
sleep
end
sleeper.resume
Fiber.scheduler.events.should == [{ event: :kernel_sleep, fiber: sleeper, args: [] }]
end
it "calls the scheduler with the given duration" do
sleeper = Fiber.new(blocking: false) do
sleep(0.01)
end
sleeper.resume
Fiber.scheduler.events.should == [{ event: :kernel_sleep, fiber: sleeper, args: [0.01] }]
end
it "does not call the scheduler if the fiber is blocking" do
sleeper = Fiber.new(blocking: true) do
sleep(0.01)
end
sleeper.resume
Fiber.scheduler.events.should == []
end
end
end
describe "Kernel.sleep" do
it "needs to be reviewed for spec completeness"
end
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