b1c3010bf2
This change adds tests for the virtual clock and aligns the interface with the time package by renaming Cancel to Stop. It also removes the binary search from Stop because it complicates the code unnecessarily.
116 lines
2.7 KiB
Go
116 lines
2.7 KiB
Go
// Copyright 2018 The go-ethereum Authors
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// This file is part of the go-ethereum library.
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//
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// The go-ethereum library is free software: you can redistribute it and/or modify
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// it under the terms of the GNU Lesser General Public License as published by
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// the Free Software Foundation, either version 3 of the License, or
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// (at your option) any later version.
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//
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// The go-ethereum library is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU Lesser General Public License for more details.
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//
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// You should have received a copy of the GNU Lesser General Public License
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// along with the go-ethereum library. If not, see <http://www.gnu.org/licenses/>.
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package mclock
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import (
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"testing"
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"time"
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)
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var _ Clock = System{}
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var _ Clock = new(Simulated)
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func TestSimulatedAfter(t *testing.T) {
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const timeout = 30 * time.Minute
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const adv = time.Minute
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var (
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c Simulated
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end = c.Now().Add(timeout)
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ch = c.After(timeout)
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)
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for c.Now() < end.Add(-adv) {
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c.Run(adv)
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select {
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case <-ch:
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t.Fatal("Timer fired early")
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default:
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}
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}
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c.Run(adv)
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select {
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case stamp := <-ch:
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want := time.Time{}.Add(timeout)
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if !stamp.Equal(want) {
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t.Errorf("Wrong time sent on timer channel: got %v, want %v", stamp, want)
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}
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default:
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t.Fatal("Timer didn't fire")
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}
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}
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func TestSimulatedAfterFunc(t *testing.T) {
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var c Simulated
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called1 := false
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timer1 := c.AfterFunc(100*time.Millisecond, func() { called1 = true })
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if c.ActiveTimers() != 1 {
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t.Fatalf("%d active timers, want one", c.ActiveTimers())
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}
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if fired := timer1.Stop(); !fired {
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t.Fatal("Stop returned false even though timer didn't fire")
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}
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if c.ActiveTimers() != 0 {
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t.Fatalf("%d active timers, want zero", c.ActiveTimers())
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}
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if called1 {
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t.Fatal("timer 1 called")
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}
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if fired := timer1.Stop(); fired {
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t.Fatal("Stop returned true after timer was already stopped")
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}
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called2 := false
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timer2 := c.AfterFunc(100*time.Millisecond, func() { called2 = true })
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c.Run(50 * time.Millisecond)
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if called2 {
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t.Fatal("timer 2 called")
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}
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c.Run(51 * time.Millisecond)
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if !called2 {
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t.Fatal("timer 2 not called")
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}
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if fired := timer2.Stop(); fired {
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t.Fatal("Stop returned true after timer has fired")
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}
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}
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func TestSimulatedSleep(t *testing.T) {
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var (
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c Simulated
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timeout = 1 * time.Hour
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done = make(chan AbsTime)
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)
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go func() {
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c.Sleep(timeout)
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done <- c.Now()
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}()
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c.WaitForTimers(1)
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c.Run(2 * timeout)
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select {
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case stamp := <-done:
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want := AbsTime(2 * timeout)
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if stamp != want {
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t.Errorf("Wrong time after sleep: got %v, want %v", stamp, want)
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}
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case <-time.After(5 * time.Second):
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t.Fatal("Sleep didn't return in time")
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}
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}
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