Create monitor for item acceptance/publishing

monitor/monitor_test.go

@@ -0,0 +1,65 @@
+package monitor
+
+import (
+	"strconv"
+	"testing"
+	"time"
+
+	"github.com/golang-collections/go-datastructures/queue"
+)
+
+func Test_Monitor(t *testing.T) {
+	itemsNew := make(chan Item, 1)
+	itemsDone := make(chan Item, 1)
+	m, err := New(itemsNew, itemsDone)
+	if err != nil {
+		t.Fatalf("cannot create new monitor: %v", err)
+	}
+
+	errs := make(chan error)
+	go func() {
+		errs <- m.Start()
+	}()
+	select {
+	case err := <-errs:
+		t.Fatalf("monitor stopped early: %v", err)
+	case <-time.After(time.Second * 1):
+	}
+
+	for i := 0; i < 2; i++ {
+		item := NewItem("item"+strconv.Itoa(i), time.Second+time.Second*time.Duration(i)*10)
+		select {
+		case itemsNew <- *item:
+		case <-time.After(time.Second * 1):
+			t.Fatalf("could not add new item in time limit")
+		}
+	}
+
+	for i := 0; i < 2; i++ {
+		select {
+		case triggered := <-itemsDone:
+			if triggered.url != "item"+strconv.Itoa(i) {
+				t.Fatalf("wrong item done order: %d was %v", i, triggered)
+			}
+		case <-time.After(time.Second * 3):
+			t.Fatalf("could not get done item in time limit")
+		}
+	}
+
+	if err := m.Stop(); err != nil {
+		t.Fatalf("could not stop monitor: %v", err)
+	}
+}
+
+func Test_NextEvent(t *testing.T) {
+	q := queue.NewPriorityQueue(1)
+	a := NewItem("a", time.Second*5)
+	b := NewItem("b", time.Second*500)
+	q.Put(a)
+	q.Put(b)
+	if time, err := nextEventTime(q); err != nil {
+		t.Fatalf("could not get next event time: %v", err)
+	} else if time != a.next {
+		t.Fatalf("got wrong next event time: %v, expected %v", time, a.next)
+	}
+}