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package server
import (
"context"
"sync/atomic"
"testing"
"time"
"github.com/mimecast/dtail/internal/clients"
"github.com/mimecast/dtail/internal/config"
"github.com/mimecast/dtail/internal/io/dlog"
)
func TestSameCalendarDay(t *testing.T) {
t.Parallel()
tests := []struct {
name string
a time.Time
b time.Time
want bool
}{
{
name: "same day",
a: time.Date(2026, time.January, 15, 10, 0, 0, 0, time.UTC),
b: time.Date(2026, time.January, 15, 23, 59, 59, 0, time.UTC),
want: true,
},
{
name: "same day-of-month in different months",
a: time.Date(2026, time.January, 15, 10, 0, 0, 0, time.UTC),
b: time.Date(2026, time.February, 15, 10, 0, 0, 0, time.UTC),
want: false,
},
{
name: "same day-of-month across years",
a: time.Date(2025, time.December, 31, 10, 0, 0, 0, time.UTC),
b: time.Date(2026, time.January, 31, 10, 0, 0, 0, time.UTC),
want: false,
},
}
for _, tt := range tests {
t.Run(tt.name, func(t *testing.T) {
t.Parallel()
if got := sameCalendarDay(tt.a, tt.b); got != tt.want {
t.Fatalf("sameCalendarDay(%v, %v) = %v, want %v", tt.a, tt.b, got, tt.want)
}
})
}
}
func TestContinuousRunJobsReleasesDayChangeWatcherAcrossRetries(t *testing.T) {
dlog.Server = &dlog.DLog{}
c := newContinuous(config.RuntimeConfig{
Server: &config.ServerConfig{
SSHBindAddress: "127.0.0.1",
},
})
c.retryInterval = 25 * time.Millisecond
var watcherStarts int32
var watcherExits int32
started := make(chan struct{}, 1)
release := make(chan struct{}, 1)
c.newMaprClient = func(args config.Args, mode clients.MaprClientMode) (continuousClient, error) {
return blockingContinuousClient{
started: started,
release: release,
}, nil
}
c.dayChangeWatcher = func(ctx context.Context) bool {
atomic.AddInt32(&watcherStarts, 1)
defer atomic.AddInt32(&watcherExits, 1)
return c.waitForDayChange(ctx)
}
job := config.Continuous{}
job.Enable = true
job.RestartOnDayChange = true
c.cfg.Server.Continuous = []config.Continuous{job}
ctx, cancel := context.WithCancel(context.Background())
done := make(chan struct{})
go func() {
c.runJobs(ctx)
close(done)
}()
for i := int32(1); i <= 5; i++ {
select {
case <-started:
case <-time.After(2 * time.Second):
t.Fatalf("timed out waiting for retry %d to start", i)
}
waitForCounterAtLeast(t, func() int32 {
return atomic.LoadInt32(&watcherStarts)
}, i)
release <- struct{}{}
waitForCounterAtLeast(t, func() int32 {
return atomic.LoadInt32(&watcherExits)
}, i)
}
cancel()
select {
case <-done:
case <-time.After(2 * time.Second):
t.Fatal("continuous job runner did not stop after cancellation")
}
}
func TestContinuousWaitForDayChangeDetectsMonthBoundary(t *testing.T) {
dlog.Server = &dlog.DLog{}
c := newContinuous(config.RuntimeConfig{})
start := time.Date(2026, time.January, 31, 23, 59, 59, 0, time.UTC)
sameDay := time.Date(2026, time.January, 31, 23, 59, 59, 500_000_000, time.UTC)
nextDay := time.Date(2026, time.February, 1, 0, 0, 0, 0, time.UTC)
var nowCalls int32
c.now = func() time.Time {
switch atomic.AddInt32(&nowCalls, 1) {
case 1:
return start
case 2:
return sameDay
default:
return nextDay
}
}
tickCh := make(chan time.Time, 2)
c.newTicker = func(time.Duration) (<-chan time.Time, func()) {
return tickCh, func() {}
}
ctx, cancel := context.WithCancel(context.Background())
defer cancel()
result := make(chan bool, 1)
go func() {
result <- c.waitForDayChange(ctx)
}()
tickCh <- start
select {
case got := <-result:
t.Fatalf("waitForDayChange returned after same-day tick: %v", got)
case <-time.After(100 * time.Millisecond):
}
tickCh <- nextDay
select {
case got := <-result:
if !got {
t.Fatal("waitForDayChange returned false after the month boundary tick")
}
case <-time.After(2 * time.Second):
t.Fatal("timed out waiting for waitForDayChange to detect the month boundary")
}
}
type blockingContinuousClient struct {
started chan<- struct{}
release <-chan struct{}
}
func (f blockingContinuousClient) Start(context.Context, <-chan string) int {
f.started <- struct{}{}
<-f.release
return 0
}
func waitForCounterAtLeast(t *testing.T, current func() int32, min int32) {
t.Helper()
deadline := time.NewTimer(2 * time.Second)
defer deadline.Stop()
ticker := time.NewTicker(10 * time.Millisecond)
defer ticker.Stop()
for {
if current() >= min {
return
}
select {
case <-deadline.C:
t.Fatalf("timed out waiting for counter to reach %d, got %d", min, current())
case <-ticker.C:
}
}
}
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