Create monitor for item acceptance/publishing

monitor/item_test.go

@@ -0,0 +1,61 @@
+package monitor
+
+import (
+	"testing"
+	"time"
+)
+
+func Test_Item(t *testing.T) {
+	a := NewItem("localhost:12345", time.Second)
+	b := NewItem("localhost:54321", time.Minute)
+	if a.Compare(b) != -1 {
+		t.Errorf("incorrect item comparison")
+	}
+	was := b.next
+	if was == b.increment().next {
+		t.Errorf("increment didn't apply")
+	}
+}
+
+func Test_ItemCompare(t *testing.T) {
+	cases := []struct {
+		inter  [2]time.Duration
+		nexts  [2]time.Time
+		result int
+	}{
+		{
+			nexts:  [2]time.Time{time.Unix(0, 0), time.Unix(10, 10)},
+			result: -1,
+		},
+		{
+			nexts:  [2]time.Time{time.Unix(10, 10), time.Unix(0, 0)},
+			result: 1,
+		},
+		{
+			nexts:  [2]time.Time{time.Unix(10, 10), time.Unix(10, 10)},
+			result: 0,
+		},
+		{
+			nexts:  [2]time.Time{time.Unix(0, 0), time.Unix(10, 10)},
+			result: -1,
+		},
+		{
+			inter:  [2]time.Duration{time.Second, time.Minute},
+			result: -1,
+		},
+		{
+			inter:  [2]time.Duration{time.Minute, time.Second},
+			result: 1,
+		},
+		{
+			inter:  [2]time.Duration{time.Second, time.Second},
+			result: 0,
+		},
+	}
+	for _, c := range cases {
+		comparison := (&Item{next: c.nexts[0], interval: c.inter[0]}).Compare(&Item{next: c.nexts[1], interval: c.inter[1]})
+		if comparison != c.result {
+			t.Errorf("failed to compare %v: got %v, expected %v", c.nexts, comparison, c.result)
+		}
+	}
+}