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xsched_test.go
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xsched_test.go
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package xsched
import (
"fmt"
"sync"
"testing"
"time"
"github.com/stretchr/testify/assert"
"github.com/stretchr/testify/require"
)
func TestCron(t *testing.T) {
c := NewWithTickInterval(100 * time.Millisecond)
// Test AddFunc with valid spec
id, err := c.AddFunc("* * * * * *", func() {})
assert.NoError(t, err, "AddFunc should not fail with valid spec")
assert.NotEmpty(t, id, "AddFunc should return a non-empty job ID")
// Test invalid cron spec
id, err = c.AddFunc("invalid spec", func() {})
assert.Error(t, err, "AddFunc should fail with invalid spec")
assert.Empty(t, id, "AddFunc should return an empty job ID for invalid spec")
// Test Start and Stop
c.Start()
assert.True(t, c.running, "Cron should be running after Start")
c.Stop()
assert.False(t, c.running, "Cron should not be running after Stop")
// Test job execution
executed := false
var mu sync.Mutex
id, err = c.AddFunc("* * * * * *", func() {
mu.Lock()
executed = true
mu.Unlock()
})
require.NoError(t, err)
c.Start()
// Use a channel to wait for job execution
done := make(chan bool)
go func() {
for i := 0; i < 20; i++ { // Try for 2 seconds
mu.Lock()
if executed {
mu.Unlock()
done <- true
return
}
mu.Unlock()
time.Sleep(100 * time.Millisecond)
}
done <- false
}()
select {
case result := <-done:
assert.True(t, result, "Job should have been executed")
case <-time.After(3 * time.Second):
t.Fatal("Test timed out")
}
c.Stop()
// Test Remove
c = New()
id, err = c.AddFunc("* * * * * *", func() {})
require.NoError(t, err)
assert.Len(t, c.jobs, 1, "Job should have been added")
c.Remove(id)
assert.Empty(t, c.jobs, "Job should have been removed")
}
func TestParseSchedule(t *testing.T) {
testCases := []struct {
spec string
isValid bool
}{
{"* * * * * *", true},
{"0 0 0 1 1 *", true},
{"*/15 * * * * *", true},
{"0 0 0 * * 1-5", true},
{"invalid", false},
{"* * * * *", false},
{"60 * * * * *", false},
}
for _, tc := range testCases {
_, err := parseSchedule(tc.spec)
if tc.isValid {
assert.NoError(t, err, "Valid spec '%s' should parse without error", tc.spec)
} else {
assert.Error(t, err, "Invalid spec '%s' should fail to parse", tc.spec)
}
}
}
func TestNextExecution(t *testing.T) {
c := New()
_, err := c.AddFunc("0 0 0 * * *", func() {}) // Every day at midnight
require.NoError(t, err)
now := time.Date(2023, 5, 1, 12, 0, 0, 0, time.UTC)
next := c.jobs[0].schedule.Next(now)
expected := time.Date(2023, 5, 2, 0, 0, 0, 0, time.UTC)
assert.Equal(t, expected, next, "Next execution time should be correct")
}
func TestConvenienceFunctions(t *testing.T) {
c := New()
testCases := []struct {
name string
addFunc func(func()) (string, error)
expected string
}{
{"AddEverySecond", c.AddEverySecond, "* * * * * *"},
{"AddEveryMinute", c.AddEveryMinute, "0 * * * * *"},
{"AddEveryHour", c.AddEveryHour, "0 0 * * * *"},
{"AddEveryDay", c.AddEveryDay, "0 0 0 * * *"},
{"AddEveryWeek", c.AddEveryWeek, "0 0 0 * * 0"},
{"AddEveryMonth", c.AddEveryMonth, "0 0 0 1 * *"},
}
for _, tc := range testCases {
t.Run(tc.name, func(t *testing.T) {
id, err := tc.addFunc(func() {})
assert.NoError(t, err)
assert.NotEmpty(t, id)
job := c.jobs[len(c.jobs)-1]
schedule, ok := job.schedule.(*cronSchedule)
assert.True(t, ok)
expected, err := parseSchedule(tc.expected)
assert.NoError(t, err)
expectedCron, ok := expected.(*cronSchedule)
assert.True(t, ok)
assert.Equal(t, expectedCron, schedule)
})
}
}
func TestAddEveryNSeconds(t *testing.T) {
c := New()
id, err := c.AddEveryNSeconds(30, func() {})
assert.NoError(t, err)
assert.NotEmpty(t, id)
job := c.jobs[len(c.jobs)-1]
schedule, ok := job.schedule.(*cronSchedule)
assert.True(t, ok)
expected, err := parseSchedule("*/30 * * * * *")
assert.NoError(t, err)
expectedCron, ok := expected.(*cronSchedule)
assert.True(t, ok)
assert.Equal(t, expectedCron, schedule)
}
func TestCronWithCustomTickInterval(t *testing.T) {
c := NewWithTickInterval(50 * time.Millisecond)
assert.Equal(t, 50*time.Millisecond, c.tickInterval, "Custom tick interval should be set correctly")
var mu sync.Mutex
executed := false
executedChan := make(chan struct{})
id, err := c.AddFunc("* * * * * *", func() {
mu.Lock()
defer mu.Unlock()
if !executed {
executed = true
close(executedChan)
}
})
require.NoError(t, err)
c.Start()
select {
case <-executedChan:
// Job executed successfully
case <-time.After(1100 * time.Millisecond):
t.Fatal("Job should have been executed within the timeout period")
}
c.Stop()
mu.Lock()
assert.True(t, executed, "Job should have been executed with custom tick interval")
mu.Unlock()
c.Remove(id)
}
func TestRemoveJob(t *testing.T) {
c := New()
id1, _ := c.AddFunc("* * * * * *", func() {})
id2, _ := c.AddFunc("*/2 * * * * *", func() {})
assert.Len(t, c.jobs, 2, "Two jobs should be added")
c.Remove(id1)
assert.Len(t, c.jobs, 1, "One job should be removed")
assert.Equal(t, id2, c.jobs[0].id, "Correct job should remain")
c.Remove(id2)
assert.Empty(t, c.jobs, "All jobs should be removed")
}
func TestConcurrentJobExecution(t *testing.T) {
c := NewWithTickInterval(50 * time.Millisecond)
var wg sync.WaitGroup
var mu sync.Mutex
count := 0
jobCount := 5
executionDuration := 1100 * time.Millisecond // Increased duration to allow job execution
wg.Add(jobCount)
for i := 0; i < jobCount; i++ {
_, err := c.AddFunc("* * * * * *", func() {
mu.Lock()
count++
mu.Unlock()
wg.Done()
})
require.NoError(t, err)
}
c.Start()
done := make(chan struct{})
go func() {
wg.Wait()
close(done)
}()
select {
case <-done:
// All jobs executed successfully
case <-time.After(executionDuration):
t.Fatal("Test timed out")
}
c.Stop()
assert.GreaterOrEqual(t, count, jobCount, "All jobs should have executed at least once")
}
func TestNextExecutionEdgeCases(t *testing.T) {
now := time.Date(2023, 12, 31, 23, 59, 59, 0, time.UTC)
testCases := []struct {
spec string
expected time.Time
}{
{"0 0 0 1 1 *", time.Date(2024, 1, 1, 0, 0, 0, 0, time.UTC)},
{"59 59 23 31 12 *", time.Date(2024, 12, 31, 23, 59, 59, 0, time.UTC)},
{"0 0 0 29 2 *", time.Date(2024, 2, 29, 0, 0, 0, 0, time.UTC)}, // Leap year
{"0 0 0 * * 1", time.Date(2024, 1, 1, 0, 0, 0, 0, time.UTC)}, // Next Monday
}
for _, tc := range testCases {
t.Run(tc.spec, func(t *testing.T) {
schedule, err := parseSchedule(tc.spec)
require.NoError(t, err)
next := schedule.Next(now)
assert.Equal(t, tc.expected, next, "Next execution time should be correct for spec: %s", tc.spec)
})
}
}
func TestInvalidScheduleSpecs(t *testing.T) {
invalidSpecs := []string{
"* * * *", // Too few fields
"* * * * * * *", // Too many fields
"60 * * * * *", // Invalid second
"* 60 * * * *", // Invalid minute
"* * 24 * * *", // Invalid hour
"* * * 32 * *", // Invalid day of month
"* * * * 13 *", // Invalid month
"* * * * * 7", // Invalid day of week
"a * * * * *", // Non-numeric value
"*/0 * * * * *", // Invalid step value
}
for _, spec := range invalidSpecs {
_, err := parseSchedule(spec)
assert.Error(t, err, "Invalid spec '%s' should fail to parse", spec)
}
}
func TestJobExecutionOrder(t *testing.T) {
c := NewWithTickInterval(50 * time.Millisecond)
var mu sync.Mutex
jobExecutionCount := make(map[int]int)
// Define expected executions for each job
expectedExecutions := map[int]int{
1: 4, // every 1 second
2: 2, // every 2 seconds
3: 1, // every 3 seconds
}
// Calculate total executions needed
totalExecutions := 0
for _, count := range expectedExecutions {
totalExecutions += count
}
var wg sync.WaitGroup
wg.Add(totalExecutions)
allDone := make(chan struct{})
// Add jobs with different schedules
for jobID, expectedCount := range expectedExecutions {
jobID := jobID
expectedCount := expectedCount
_, err := c.AddFunc(fmt.Sprintf("*/%d * * * * *", jobID), func() {
mu.Lock()
jobExecutionCount[jobID]++
currentCount := jobExecutionCount[jobID]
mu.Unlock()
if currentCount <= expectedCount {
wg.Done()
}
})
require.NoError(t, err)
}
c.Start()
go func() {
wg.Wait()
close(allDone)
}()
// Wait for all expected executions or timeout
select {
case <-allDone:
// All expected executions completed
case <-time.After(10 * time.Second):
t.Fatal("Test timed out waiting for job executions")
}
c.Stop()
// Verify each job executed as expected
for jobID, expected := range expectedExecutions {
mu.Lock()
count := jobExecutionCount[jobID]
mu.Unlock()
assert.GreaterOrEqual(t, count, expected, fmt.Sprintf("Job %d should have executed at least %d times, got %d", jobID, expected, count))
}
}
func TestCronStartStop(t *testing.T) {
c := NewWithTickInterval(50 * time.Millisecond)
executed := make(chan bool, 1)
_, err := c.AddFunc("* * * * * *", func() {
executed <- true
})
require.NoError(t, err)
// Start the cron
c.Start()
assert.True(t, c.running, "Cron should be running after Start")
// Wait for the job to execute
select {
case <-executed:
// Job executed successfully
case <-time.After(1100 * time.Millisecond): // Increased timeout to allow for job execution
t.Fatal("Job should have been executed")
}
// Stop the cron
c.Stop()
assert.False(t, c.running, "Cron should not be running after Stop")
// Ensure no further executions occur after stopping
select {
case <-executed:
t.Fatal("Job should not execute after Stop")
case <-time.After(200 * time.Millisecond):
// No execution as expected
}
}