add test for manually triggered calls

ticker.go

@@ -29,7 +29,7 @@ func (c *CallTicker) Reset(d time.Duration) {
 	c.ticker.Reset(d)
 }
 
-func (c *CallTicker) Trigger() {
+func (c *CallTicker) Force() {
 	c.manualTrigger <- true
 	c.Reset(c.duration)
 }

ticker_test.go

@@ -28,4 +28,12 @@ func TestTicker(t *testing.T) {
 	if num != 5 {
 		t.Errorf("expected calls to stop")
 	}
+
+	ticker.Force()
+	time.Sleep(time.Millisecond * 10)
+
+	if num != 6 {
+		t.Errorf("forced call did not run")
+	}
+
 }