Function TestReset

kv/consul/client_test.go:92–131

(t *testing.T)

}

func TestReset(t *testing.T) {
	c, closer := NewInMemoryClient(codec.String{}, testLogger{}, prometheus.NewPedanticRegistry())
	t.Cleanup(func() {
		assert.NoError(t, closer.Close())
	})

	const key = "test"
	const max = 5

	ch := make(chan error)
	go func() {
		defer close(ch)
		for i := 0; i <= max; i++ {
			t.Log("ts", time.Now(), "msg", "writing value", "val", i)
			_, _ = c.kv.Put(&consul.KVPair{Key: key, Value: []byte(fmt.Sprintf("%d", i))}, nil)
			if i == 1 {
				c.kv.(*mockKV).ResetIndex()
			}
			if i == 2 {
				c.kv.(*mockKV).ResetIndexForKey(key)
			}
			time.Sleep(10 * time.Millisecond)
		}
	}()

	observed := observeValueForSomeTime(t, c, key, 25*max*time.Millisecond)

	// wait until updater finishes
	<-ch

	// Let's see how many updates we have observed. Given the rate limit and our observing time, we should see all numeric values
	if testing.Verbose() {
		t.Log(observed)
	}
	if len(observed) < max {
		t.Error("Expected all values, got", observed)
	} else if observed[len(observed)-1] != fmt.Sprintf("%d", max) {
		t.Error("Expected to see last written value, got", observed)
	}
}

func observeValueForSomeTime(t *testing.T, client *Client, key string, timeout time.Duration) []string {
	t.Helper()