Add functions to testhelper package

pkg/testhelper/kube/webhook.go

@@ -0,0 +1,33 @@
+package kube
+
+import (
+	"context"
+	"time"
+
+	//nolint:staticcheck // ST1001
+	. "github.com/onsi/ginkgo/v2"
+	//nolint:staticcheck // ST1001
+	. "github.com/onsi/gomega"
+	admissionregistrationv1 "k8s.io/api/admissionregistration/v1"
+	"sigs.k8s.io/controller-runtime/pkg/client"
+)
+
+type Webhook struct {
+	client client.Client
+	config *Config
+	name   string
+}
+
+func (w *Webhook) WaitForWebhookToBeRegistered(ctx context.Context) {
+	By("Waiting for webhook " + w.name + " to be registered")
+
+	Eventually(func(g Gomega) {
+		// short per-attempt timeout to avoid hanging calls while Eventually polls
+		attemptCtx, cancel := context.WithTimeout(ctx, 10*time.Second)
+		defer cancel()
+
+		webhookConfig := &admissionregistrationv1.MutatingWebhookConfiguration{}
+		err := w.client.Get(attemptCtx, client.ObjectKey{Name: w.name}, webhookConfig)
+		g.Expect(err).ToNot(HaveOccurred())
+	}, w.config.TestConfig.Timeout, w.config.TestConfig.Interval).Should(Succeed())
+}