test: add more tests (#1154)

core/timex/ticker_test.go

@@ -41,3 +41,10 @@ func TestFakeTicker(t *testing.T) {
 	assert.Nil(t, ticker.Wait(time.Second))
 	assert.Equal(t, int32(total), atomic.LoadInt32(&count))
 }
+
+func TestFakeTickerTimeout(t *testing.T) {
+	ticker := NewFakeTicker()
+	defer ticker.Stop()
+
+	assert.NotNil(t, ticker.Wait(time.Millisecond))
+}