test: Set different feature gates for versions before 3.1.x

Signed-off-by: Jintao Zhang <[email protected]>

test/e2e/features_test.go

@@ -250,7 +250,7 @@ func TestDeployAllInOneDBLESSGateway(t *testing.T) {
 	for i, container := range controllerDeployment.Spec.Template.Spec.Containers {
 		if container.Name == controllerContainerName {
 			controllerDeployment.Spec.Template.Spec.Containers[i].Env = append(controllerDeployment.Spec.Template.Spec.Containers[i].Env,
-				corev1.EnvVar{Name: "CONTROLLER_FEATURE_GATES", Value: consts.DefaultFeatureGates})
+				corev1.EnvVar{Name: "CONTROLLER_FEATURE_GATES", Value: testenv.GetFeatureGates()})
 		}
 	}
 

test/internal/testenv/feature_gates.go

@@ -1,7 +1,32 @@
 package testenv
 
-import "github.com/kong/kubernetes-ingress-controller/v3/test/consts"
+import (
+	"github.com/blang/semver/v4"
 
-func getFeatureGates() string {
+	"github.com/kong/kubernetes-ingress-controller/v3/test/consts"
+)
+
+func GetFeatureGates() string {
+	// Due to the possibility of running tests between different versions,
+	// it is necessary to adjust feature gates according to different KIC versions.
+	//
+	// Versions below 3.1.x cannot recognize the KongServiceFacade feature gate.
+	// We only need to set `GatewayAlpha=true`.
+	//
+	// https://github.com/Kong/kubernetes-ingress-controller/issues/5373
+	tag := ControllerTag()
+	if tag != "" {
+		// Currently, the latest version is 3.0.x, once 3.1.x is released,
+		// we can remove this logic.
+		if tag == "latest" {
+			return "GatewayAlpha=true"
+		}
+		if v, err := semver.Make(tag); err == nil {
+			minVersion, _ := semver.ParseRange("<3.1.x")
+			if minVersion(v) {
+				return "GatewayAlpha=true"
+			}
+		}
+	}
 	return consts.DefaultFeatureGates
 }

test/internal/testenv/testenv.go

@@ -104,7 +104,6 @@ func ControllerImageTag() string {
 	return ""
 }
 
-// KongEffectiveVersion is the effective semver of kong gateway.
 // KongEffectiveVersion is the effective semver of kong gateway.
 // When testing against "nightly" image of kong gateway, we need to set the effective version for parsing semver in chart templates.
 func KongEffectiveVersion() string {
@@ -205,7 +204,7 @@ func GithubRunID() string {
 func ControllerFeatureGates() string {
 	featureGates := os.Getenv("KONG_CONTROLLER_FEATURE_GATES")
 	if featureGates == "" {
-		featureGates = getFeatureGates()
+		featureGates = GetFeatureGates()
 	}
 	return featureGates
 }