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package cron
import (
"fmt"
"sync"
"testing"
"time"
)
// Many tests schedule a job for every second, and then wait at most a second
// for it to run. This amount is just slightly larger than 1 second to
// compensate for a few milliseconds of runtime.
const ONE_SECOND = 1*time.Second + 10*time.Millisecond
// Start and stop cron with no entries.
func TestNoEntries(t *testing.T) {
cron := New()
cron.Start()
select {
case <-time.After(ONE_SECOND):
t.FailNow()
case <-stop(cron):
}
}
// Start, stop, then add an entry. Verify entry doesn't run.
func TestStopCausesJobsToNotRun(t *testing.T) {
wg := &sync.WaitGroup{}
wg.Add(1)
cron := New()
cron.Start()
cron.Stop()
cron.AddFunc("* * * * * ?", func() { wg.Done() })
select {
case <-time.After(ONE_SECOND):
// No job ran!
case <-wait(wg):
t.FailNow()
}
}
// Add a job, start cron, expect it runs.
func TestAddBeforeRunning(t *testing.T) {
wg := &sync.WaitGroup{}
wg.Add(1)
cron := New()
cron.AddFunc("* * * * * ?", func() { wg.Done() })
cron.Start()
defer cron.Stop()
// Give cron 2 seconds to run our job (which is always activated).
select {
case <-time.After(ONE_SECOND):
t.FailNow()
case <-wait(wg):
}
}
// Start cron, add a job, expect it runs.
func TestAddWhileRunning(t *testing.T) {
wg := &sync.WaitGroup{}
wg.Add(1)
cron := New()
cron.Start()
defer cron.Stop()
cron.AddFunc("* * * * * ?", func() { wg.Done() })
select {
case <-time.After(ONE_SECOND):
t.FailNow()
case <-wait(wg):
}
}
// Add a job, remove a job, start cron, expect nothing runs.
func TestRemoveBeforeRunning(t *testing.T) {
wg := &sync.WaitGroup{}
wg.Add(1)
cron := New()
id, _ := cron.AddFunc("* * * * * ?", func() { wg.Done() })
cron.Remove(id)
cron.Start()
defer cron.Stop()
select {
case <-time.After(ONE_SECOND):
// Success, shouldn't run
case <-wait(wg):
t.FailNow()
}
}
// Start cron, add a job, remove it, expect it doesn't run.
func TestRemoveWhileRunning(t *testing.T) {
wg := &sync.WaitGroup{}
wg.Add(1)
cron := New()
cron.Start()
defer cron.Stop()
id, _ := cron.AddFunc("* * * * * ?", func() { wg.Done() })
cron.Remove(id)
select {
case <-time.After(ONE_SECOND):
case <-wait(wg):
t.FailNow()
}
}
// Test timing with Entries.
func TestSnapshotEntries(t *testing.T) {
wg := &sync.WaitGroup{}
wg.Add(1)
cron := New()
cron.AddFunc("@every 2s", func() { wg.Done() })
cron.Start()
defer cron.Stop()
// Cron should fire in 2 seconds. After 1 second, call Entries.
select {
case <-time.After(ONE_SECOND):
cron.Entries()
}
// Even though Entries was called, the cron should fire at the 2 second mark.
select {
case <-time.After(ONE_SECOND):
t.FailNow()
case <-wait(wg):
}
}
// Test that the entries are correctly sorted.
// Add a bunch of long-in-the-future entries, and an immediate entry, and ensure
// that the immediate entry runs immediately.
// Also: Test that multiple jobs run in the same instant.
func TestMultipleEntries(t *testing.T) {
wg := &sync.WaitGroup{}
wg.Add(2)
cron := New()
cron.AddFunc("0 0 0 1 1 ?", func() {})
cron.AddFunc("* * * * * ?", func() { wg.Done() })
id1, _ := cron.AddFunc("* * * * * ?", func() { t.Fatal() })
id2, _ := cron.AddFunc("* * * * * ?", func() { t.Fatal() })
cron.AddFunc("0 0 0 31 12 ?", func() {})
cron.AddFunc("* * * * * ?", func() { wg.Done() })
cron.Remove(id1)
cron.Start()
cron.Remove(id2)
defer cron.Stop()
select {
case <-time.After(ONE_SECOND):
t.FailNow()
case <-wait(wg):
}
}
// Test running the same job twice.
func TestRunningJobTwice(t *testing.T) {
wg := &sync.WaitGroup{}
wg.Add(2)
cron := New()
cron.AddFunc("0 0 0 1 1 ?", func() {})
cron.AddFunc("0 0 0 31 12 ?", func() {})
cron.AddFunc("* * * * * ?", func() { wg.Done() })
cron.Start()
defer cron.Stop()
select {
case <-time.After(2 * ONE_SECOND):
t.FailNow()
case <-wait(wg):
}
}
func TestRunningMultipleSchedules(t *testing.T) {
wg := &sync.WaitGroup{}
wg.Add(2)
cron := New()
cron.AddFunc("0 0 0 1 1 ?", func() {})
cron.AddFunc("0 0 0 31 12 ?", func() {})
cron.AddFunc("* * * * * ?", func() { wg.Done() })
cron.Schedule(Every(time.Minute), FuncJob(func() {}))
cron.Schedule(Every(time.Second), FuncJob(func() { wg.Done() }))
cron.Schedule(Every(time.Hour), FuncJob(func() {}))
cron.Start()
defer cron.Stop()
select {
case <-time.After(2 * ONE_SECOND):
t.FailNow()
case <-wait(wg):
}
}
// Test that the cron is run in the local time zone (as opposed to UTC).
func TestLocalTimezone(t *testing.T) {
wg := &sync.WaitGroup{}
wg.Add(1)
now := time.Now().Local()
spec := fmt.Sprintf("%d %d %d %d %d ?",
now.Second()+1, now.Minute(), now.Hour(), now.Day(), now.Month())
cron := New()
cron.AddFunc(spec, func() { wg.Done() })
cron.Start()
defer cron.Stop()
select {
case <-time.After(ONE_SECOND):
t.FailNow()
case <-wait(wg):
}
}
type testJob struct {
wg *sync.WaitGroup
name string
}
func (t testJob) Run() {
t.wg.Done()
}
// Simple test using Runnables.
func TestJob(t *testing.T) {
wg := &sync.WaitGroup{}
wg.Add(1)
cron := New()
cron.AddJob("0 0 0 30 Feb ?", testJob{wg, "job0"})
cron.AddJob("0 0 0 1 1 ?", testJob{wg, "job1"})
cron.AddJob("* * * * * ?", testJob{wg, "job2"})
cron.AddJob("1 0 0 1 1 ?", testJob{wg, "job3"})
cron.Schedule(Every(5*time.Second+5*time.Nanosecond), testJob{wg, "job4"})
cron.Schedule(Every(5*time.Minute), testJob{wg, "job5"})
cron.Start()
defer cron.Stop()
select {
case <-time.After(ONE_SECOND):
t.FailNow()
case <-wait(wg):
}
// Ensure the entries are in the right order.
expecteds := []string{"job2", "job4", "job5", "job1", "job3", "job0"}
var actuals []string
for _, entry := range cron.Entries() {
actuals = append(actuals, entry.Job.(testJob).name)
}
for i, expected := range expecteds {
if actuals[i] != expected {
t.Errorf("Jobs not in the right order. (expected) %s != %s (actual)", expecteds, actuals)
t.FailNow()
}
}
}
func wait(wg *sync.WaitGroup) chan bool {
ch := make(chan bool)
go func() {
wg.Wait()
ch <- true
}()
return ch
}
func stop(cron *Cron) chan bool {
ch := make(chan bool)
go func() {
cron.Stop()
ch <- true
}()
return ch
}
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