e2e: add e2e test for MergeGateways feature

test/config/gatewayclass.yaml

@@ -86,4 +86,23 @@ spec:
     kubernetes:
       envoyDeployment:
         replicas: 2
-
+---
+kind: GatewayClass
+apiVersion: gateway.networking.k8s.io/v1
+metadata:
+  name: merge-gateways
+spec:
+  controllerName: gateway.envoyproxy.io/gatewayclass-controller
+  parametersRef:
+    group: gateway.envoyproxy.io
+    kind: EnvoyProxy
+    name: merge-gateways-config
+    namespace: envoy-gateway-system
+---
+apiVersion: gateway.envoyproxy.io/v1alpha1
+kind: EnvoyProxy
+metadata:
+  name: merge-gateways-config
+  namespace: envoy-gateway-system
+spec:
+  mergeGateways: true

test/e2e/merge-gateways/merge_gateways_test.go

@@ -0,0 +1,66 @@
+// Copyright Envoy Gateway Authors
+// SPDX-License-Identifier: Apache-2.0
+// The full text of the Apache license is available in the LICENSE file at
+// the root of the repo.
+
+//go:build e2e
+// +build e2e
+
+package e2e
+
+import (
+	"flag"
+	"testing"
+
+	"github.com/stretchr/testify/require"
+	"sigs.k8s.io/controller-runtime/pkg/client"
+	"sigs.k8s.io/controller-runtime/pkg/client/config"
+	gwapiv1 "sigs.k8s.io/gateway-api/apis/v1"
+	gwapiv1a2 "sigs.k8s.io/gateway-api/apis/v1alpha2"
+	"sigs.k8s.io/gateway-api/conformance/utils/flags"
+	"sigs.k8s.io/gateway-api/conformance/utils/kubernetes"
+	"sigs.k8s.io/gateway-api/conformance/utils/suite"
+
+	egv1a1 "github.com/envoyproxy/gateway/api/v1alpha1"
+	"github.com/envoyproxy/gateway/test/e2e"
+	"github.com/envoyproxy/gateway/test/e2e/tests"
+)
+
+func TestMergeGateways(t *testing.T) {
+	flag.Parse()
+
+	cfg, err := config.GetConfig()
+	require.NoError(t, err)
+
+	c, err := client.New(cfg, client.Options{})
+	require.NoError(t, err)
+	require.NoError(t, gwapiv1a2.AddToScheme(c.Scheme()))
+	require.NoError(t, gwapiv1.AddToScheme(c.Scheme()))
+	require.NoError(t, egv1a1.AddToScheme(c.Scheme()))
+
+	if flags.RunTest != nil && *flags.RunTest != "" {
+		t.Logf("Running E2E test %s with %s GatewayClass\n cleanup: %t\n debug: %t",
+			*flags.RunTest, *flags.GatewayClassName, *flags.CleanupBaseResources, *flags.ShowDebug)
+	} else {
+		t.Logf("Running E2E tests with %s GatewayClass\n cleanup: %t\n debug: %t",
+			*flags.GatewayClassName, *flags.CleanupBaseResources, *flags.ShowDebug)
+	}
+
+	cSuite := suite.New(suite.Options{
+		Client:               c,
+		GatewayClassName:     *flags.GatewayClassName,
+		Debug:                *flags.ShowDebug,
+		CleanupBaseResources: *flags.CleanupBaseResources,
+		RunTest:              *flags.RunTest,
+	})
+
+	// Setting up the necessary arguments for the suite instead of calling Suite.Setup method again,
+	// since this test suite reuse the base resources of previous test suite.
+	cSuite.Applier.FS = e2e.Manifests
+	cSuite.Applier.GatewayClass = *flags.GatewayClassName
+	cSuite.ControllerName = kubernetes.GWCMustHaveAcceptedConditionTrue(t,
+		cSuite.Client, cSuite.TimeoutConfig, cSuite.GatewayClassName)
+
+	t.Logf("Running %d MergeGateways tests", len(tests.MergeGatewaysTests))
+	cSuite.Run(t, tests.MergeGatewaysTests)
+}

test/e2e/testdata/basic-merge-gateways.yaml

@@ -0,0 +1,147 @@
+apiVersion: gateway.networking.k8s.io/v1
+kind: Gateway
+metadata:
+  name: merged-gateway-1
+  namespace: gateway-conformance-infra
+spec:
+  gatewayClassName: merge-gateways
+  listeners:
+    - allowedRoutes:
+        namespaces:
+          from: Same
+      name: http1
+      port: 8080
+      protocol: HTTP
+---
+apiVersion: gateway.networking.k8s.io/v1
+kind: Gateway
+metadata:
+  name: merged-gateway-2
+  namespace: gateway-conformance-infra
+spec:
+  gatewayClassName: merge-gateways
+  listeners:
+    - allowedRoutes:
+        namespaces:
+          from: Same
+      name: http2
+      port: 8081
+      protocol: HTTP
+---
+apiVersion: gateway.networking.k8s.io/v1
+kind: Gateway
+metadata:
+  name: merged-gateway-3
+  namespace: gateway-conformance-infra
+spec:
+  gatewayClassName: merge-gateways
+  listeners:
+    - allowedRoutes:
+        namespaces:
+          from: Same
+      name: http3
+      port: 8082
+      protocol: HTTP
+---
+apiVersion: gateway.networking.k8s.io/v1
+kind: Gateway
+metadata:
+  name: merged-gateway-4
+  namespace: gateway-conformance-infra
+spec:
+  gatewayClassName: merge-gateways
+  listeners:
+    - allowedRoutes:
+        namespaces:
+          from: Same
+      name: http3
+      port: 8082
+      protocol: HTTP
+---
+apiVersion: gateway.networking.k8s.io/v1
+kind: HTTPRoute
+metadata:
+  name: merged-gateway-route-1
+  namespace: gateway-conformance-infra
+spec:
+  parentRefs:
+    - name: merged-gateway-1
+  hostnames:
+    - "www.example1.com"
+  rules:
+    - backendRefs:
+        - group: ""
+          kind: Service
+          name: infra-backend-v1
+          port: 8080
+          weight: 1
+      matches:
+        - path:
+            type: PathPrefix
+            value: /merge1
+---
+apiVersion: gateway.networking.k8s.io/v1
+kind: HTTPRoute
+metadata:
+  name: merged-gateway-route-2
+  namespace: gateway-conformance-infra
+spec:
+  parentRefs:
+    - name: merged-gateway-2
+  hostnames:
+    - "www.example2.com"
+  rules:
+    - backendRefs:
+        - group: ""
+          kind: Service
+          name: infra-backend-v2
+          port: 8080
+          weight: 1
+      matches:
+        - path:
+            type: PathPrefix
+            value: /merge2
+---
+apiVersion: gateway.networking.k8s.io/v1
+kind: HTTPRoute
+metadata:
+  name: merged-gateway-route-3
+  namespace: gateway-conformance-infra
+spec:
+  parentRefs:
+    - name: merged-gateway-3
+  hostnames:
+    - "www.example3.com"
+  rules:
+    - backendRefs:
+        - group: ""
+          kind: Service
+          name: infra-backend-v3
+          port: 8080
+          weight: 1
+      matches:
+        - path:
+            type: PathPrefix
+            value: /merge3
+---
+apiVersion: gateway.networking.k8s.io/v1
+kind: HTTPRoute
+metadata:
+  name: merged-gateway-route-4
+  namespace: gateway-conformance-infra
+spec:
+  parentRefs:
+    - name: merged-gateway-4
+  hostnames:
+    - "www.example4.com"
+  rules:
+    - backendRefs:
+        - group: ""
+          kind: Service
+          name: infra-backend-v3
+          port: 8080
+          weight: 1
+      matches:
+        - path:
+            type: PathPrefix
+            value: /merge4

test/e2e/tests/eg_upgrade.go

@@ -24,6 +24,10 @@ import (
 	"sigs.k8s.io/gateway-api/conformance/utils/suite"
 )
 
+func init() {
+	UpgradeTests = append(UpgradeTests, EGUpgradeTest)
+}
+
 var EGUpgradeTest = suite.ConformanceTest{
 	ShortName:   "EGUpgrade",
 	Description: "Upgrading from the last eg version should not lead to failures",