feat(stacks): support automated sync for stacks [EE-248] (#5340)

api/scheduler/scheduler_test.go

@@ -0,0 +1,57 @@
+package scheduler
+
+import (
+	"context"
+	"fmt"
+	"testing"
+	"time"
+
+	"github.com/stretchr/testify/assert"
+)
+
+func Test_CanStartAndTerminate(t *testing.T) {
+	s := NewScheduler(context.Background())
+	s.StartJobEvery(1*time.Minute, func() { fmt.Println("boop") })
+
+	err := s.Shutdown()
+	assert.NoError(t, err, "Shutdown should return no errors")
+	assert.Empty(t, s.crontab.Entries(), "all jobs should have been removed")
+}
+
+func Test_CanTerminateByCancellingContext(t *testing.T) {
+	ctx, cancel := context.WithCancel(context.Background())
+	s := NewScheduler(ctx)
+	s.StartJobEvery(1*time.Minute, func() { fmt.Println("boop") })
+
+	cancel()
+
+	for i := 0; i < 100; i++ {
+		if len(s.crontab.Entries()) == 0 {
+			return
+		}
+		time.Sleep(10 * time.Millisecond)
+	}
+	t.Fatal("all jobs are expected to be cleaned by now; it might be a timing issue, otherwise implementation defect")
+}
+
+func Test_StartAndStopJob(t *testing.T) {
+	s := NewScheduler(context.Background())
+	defer s.Shutdown()
+
+	ctx, cancel := context.WithTimeout(context.Background(), 2*time.Second)
+
+	var jobOne string
+	var workDone bool
+	jobOne = s.StartJobEvery(time.Second, func() {
+		assert.Equal(t, 1, len(s.crontab.Entries()), "scheduler should have one active job")
+		workDone = true
+
+		s.StopJob(jobOne)
+		cancel()
+	})
+
+	<-ctx.Done()
+	assert.True(t, workDone, "value should been set in the job")
+	assert.Equal(t, 0, len(s.crontab.Entries()), "scheduler should have no active jobs")
+
+}