test(gateway): add test with GatewayClass.Spec.ParametersRef

Signed-off-by: Mike Beaumont <mjboamail@gmail.com>

test/e2e/gateway/gatewayapi/gateway_api.go

@@ -2,6 +2,7 @@ package gatewayapi
 
 import (
 	"net"
+	"time"
 
 	"github.com/gruntwork-io/terratest/modules/k8s"
 	. "github.com/onsi/ginkgo/v2"
@@ -115,6 +116,56 @@ func GatewayAPI() {
 		return ip
 	}
 
+	Describe("GatewayClass parametersRef", Ordered, func() {
+		haGatewayClass := `
+apiVersion: gateway.networking.k8s.io/v1alpha2
+kind: GatewayClass
+metadata:
+  name: kuma
+spec:
+  controllerName: gateways.kuma.io/controller
+  parametersRef:
+    kind: MeshGatewayConfig
+	group: kuma.io
+	name: haConfig`
+
+		haConfig := `
+apiVersion: kuma.io/v1alpha1
+kind: MeshGatewayConfig
+metadata:
+  name: haConfig
+spec:
+  replicas: 3`
+
+		haGateway := `
+apiVersion: gateway.networking.k8s.io/v1alpha2
+kind: Gateway
+metadata:
+  name: kuma
+  namespace: kuma-test
+spec:
+  gatewayClassName: kuma
+  listeners:
+  - name: proxy
+    port: 8080
+    protocol: HTTP`
+
+		BeforeAll(func() {
+			E2EDeferCleanup(func() error {
+				return k8s.RunKubectlE(cluster.GetTesting(), cluster.GetKubectlOptions(TestNamespace), "delete", "gateway", "kuma")
+			})
+			Expect(YamlK8s(haConfig)(cluster)).To(Succeed())
+			// TODO this shouldn't be necessary, need to reconcile on MeshGatewayConfig
+			time.Sleep(10 * time.Second)
+			Expect(YamlK8s(haGatewayClass)(cluster)).To(Succeed())
+			Expect(YamlK8s(haGateway)(cluster)).To(Succeed())
+		})
+
+		It("should create the right number of pods", func() {
+			Expect(cluster.WaitApp("kuma", "kuma-test", 3)).To(Succeed())
+		})
+	})
+
 	Context("HTTP Gateway", Ordered, func() {
 		gateway := `
 apiVersion: gateway.networking.k8s.io/v1alpha2