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// Copyright 2018 The go-ethereum Authors
// This file is part of the go-ethereum library.
//
// The go-ethereum library is free software: you can redistribute it and/or modify
// it under the terms of the GNU Lesser General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// The go-ethereum library is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU Lesser General Public License for more details.
//
// You should have received a copy of the GNU Lesser General Public License
// along with the go-ethereum library. If not, see <http://www.gnu.org/licenses/>.
package mclock
import (
"testing"
"time"
)
var _ Clock = System{}
var _ Clock = new(Simulated)
func TestSimulatedAfter(t *testing.T) {
const timeout = 30 * time.Minute
const adv = time.Minute
var (
c Simulated
end = c.Now().Add(timeout)
ch = c.After(timeout)
)
for c.Now() < end.Add(-adv) {
c.Run(adv)
select {
case <-ch:
t.Fatal("Timer fired early")
default:
}
}
c.Run(adv)
select {
case stamp := <-ch:
want := time.Time{}.Add(timeout)
if !stamp.Equal(want) {
t.Errorf("Wrong time sent on timer channel: got %v, want %v", stamp, want)
}
default:
t.Fatal("Timer didn't fire")
}
}
func TestSimulatedAfterFunc(t *testing.T) {
var c Simulated
called1 := false
timer1 := c.AfterFunc(100*time.Millisecond, func() { called1 = true })
if c.ActiveTimers() != 1 {
t.Fatalf("%d active timers, want one", c.ActiveTimers())
}
if fired := timer1.Stop(); !fired {
t.Fatal("Stop returned false even though timer didn't fire")
}
if c.ActiveTimers() != 0 {
t.Fatalf("%d active timers, want zero", c.ActiveTimers())
}
if called1 {
t.Fatal("timer 1 called")
}
if fired := timer1.Stop(); fired {
t.Fatal("Stop returned true after timer was already stopped")
}
called2 := false
timer2 := c.AfterFunc(100*time.Millisecond, func() { called2 = true })
c.Run(50 * time.Millisecond)
if called2 {
t.Fatal("timer 2 called")
}
c.Run(51 * time.Millisecond)
if !called2 {
t.Fatal("timer 2 not called")
}
if fired := timer2.Stop(); fired {
t.Fatal("Stop returned true after timer has fired")
}
}
func TestSimulatedSleep(t *testing.T) {
var (
c Simulated
timeout = 1 * time.Hour
done = make(chan AbsTime)
)
go func() {
c.Sleep(timeout)
done <- c.Now()
}()
c.WaitForTimers(1)
c.Run(2 * timeout)
select {
case stamp := <-done:
want := AbsTime(2 * timeout)
if stamp != want {
t.Errorf("Wrong time after sleep: got %v, want %v", stamp, want)
}
case <-time.After(5 * time.Second):
t.Fatal("Sleep didn't return in time")
}
}
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