e2e-tests (3/4): Add envtest mode for faster in-process e2e testing

Makefile

@@ -107,6 +107,11 @@ test-e2e-cluster: FORCE install-ginkgo
 	@printf "\e[1;36m>> ginkgo -procs=$(GINKGO_PROCS) -tags=cluster -timeout=20m -v ./test/e2e/ (PROVIDER=$(PROVIDER))\e[0m\n"
 	@KIND_CLUSTER=$(KIND_CLUSTER) E2E_PROVIDER=$(PROVIDER) ginkgo -procs=$(GINKGO_PROCS) -tags=cluster -timeout=20m -v ./test/e2e/
 
+# Run gNMI controller tests in envtest mode (no cluster required).
+test-e2e-envtest: FORCE install-setup-envtest
+	@printf "\e[1;36m>> go test ./test/e2e/ -tags=envtest -v -ginkgo.v (PROVIDER=$(PROVIDER))\e[0m\n"
+	@KUBEBUILDER_ASSETS=$$(setup-envtest use 1.32 -p path) E2E_PROVIDER=$(PROVIDER) go test ./test/e2e/ -tags=envtest -v -ginkgo.v
+
 docker-build: FORCE
 	@printf "\e[1;36m>> $(CONTAINER_TOOL) build --tag=$(IMG) .\e[0m\n"
 	@$(CONTAINER_TOOL) build --build-arg=BININFO_BUILD_DATE=$(BININFO_BUILD_DATE) --build-arg=BININFO_COMMIT_HASH=$(BININFO_COMMIT_HASH) --build-arg=BININFO_VERSION=$(BININFO_VERSION) --tag=$(IMG) .

Makefile.maker.yaml

@@ -149,6 +149,11 @@ verbatim: |
     @printf "\e[1;36m>> ginkgo -procs=$(GINKGO_PROCS) -tags=cluster -timeout=20m -v ./test/e2e/ (PROVIDER=$(PROVIDER))\e[0m\n"
     @KIND_CLUSTER=$(KIND_CLUSTER) E2E_PROVIDER=$(PROVIDER) ginkgo -procs=$(GINKGO_PROCS) -tags=cluster -timeout=20m -v ./test/e2e/
 
+  # Run gNMI controller tests in envtest mode (no cluster required).
+  test-e2e-envtest: FORCE install-setup-envtest
+    @printf "\e[1;36m>> go test ./test/e2e/ -tags=envtest -v -ginkgo.v (PROVIDER=$(PROVIDER))\e[0m\n"
+    @KUBEBUILDER_ASSETS=$$(setup-envtest use 1.32 -p path) E2E_PROVIDER=$(PROVIDER) go test ./test/e2e/ -tags=envtest -v -ginkgo.v
+
   docker-build: FORCE
     @printf "\e[1;36m>> $(CONTAINER_TOOL) build --tag=$(IMG) .\e[0m\n"
     @$(CONTAINER_TOOL) build --build-arg=BININFO_BUILD_DATE=$(BININFO_BUILD_DATE) --build-arg=BININFO_COMMIT_HASH=$(BININFO_COMMIT_HASH) --build-arg=BININFO_VERSION=$(BININFO_VERSION) --tag=$(IMG) .

go.mod

@@ -72,6 +72,7 @@ require (
 	github.com/google/uuid v1.6.0 // indirect
 	github.com/grpc-ecosystem/grpc-gateway/v2 v2.27.7 // indirect
 	github.com/inconshreveable/mousetrap v1.1.0 // indirect
+	github.com/ironcore-dev/gnmi-test-server v0.0.0-00010101000000-000000000000 // indirect
 	github.com/json-iterator/go v1.1.12 // indirect
 	github.com/kylelemons/godebug v1.1.0 // indirect
 	github.com/modern-go/concurrent v0.0.0-20180306012644-bacd9c7ef1dd // indirect
@@ -90,6 +91,7 @@ require (
 	github.com/stretchr/objx v0.5.2 // indirect
 	github.com/tidwall/match v1.1.1 // indirect
 	github.com/tidwall/pretty v1.2.1 // indirect
+	github.com/tidwall/sjson v1.2.5 // indirect
 	github.com/x448/float16 v0.8.4 // indirect
 	go.opentelemetry.io/auto/sdk v1.2.1 // indirect
 	go.opentelemetry.io/contrib/instrumentation/net/http/otelhttp v0.65.0 // indirect

test/e2e/envtest_suite_test.go

@@ -0,0 +1,42 @@
+// SPDX-FileCopyrightText: 2025 SAP SE or an SAP affiliate company and IronCore contributors
+// SPDX-License-Identifier: Apache-2.0
+
+//go:build envtest
+
+package e2e
+
+import (
+	"fmt"
+	"testing"
+	"time"
+
+	. "github.com/onsi/ginkgo/v2"
+	. "github.com/onsi/gomega"
+	logf "sigs.k8s.io/controller-runtime/pkg/log"
+	"sigs.k8s.io/controller-runtime/pkg/log/zap"
+
+	"github.com/ironcore-dev/network-operator/test/e2e/testutil"
+)
+
+// TestE2E runs the e2e test suite in envtest mode.
+func TestEnvtest(t *testing.T) {
+	RegisterFailHandler(Fail)
+	_, _ = fmt.Fprintf(GinkgoWriter, "Starting network-operator tests in ENVTEST mode\n")
+	RunSpecs(t, "e2e suite (envtest)")
+}
+
+// BeforeSuite initializes the envtest environment.
+// Envtest runs in-process, so no special parallel handling is needed.
+var _ = BeforeSuite(func(ctx SpecContext) {
+	logf.SetLogger(zap.New(zap.WriteTo(GinkgoWriter), zap.UseDevMode(true)))
+	SetDefaultEventuallyTimeout(testutil.DefaultTimeout)
+	SetDefaultEventuallyPollingInterval(time.Second)
+
+	initTestEnv(ctx)
+})
+
+// AfterSuite cleans up the envtest environment.
+var _ = AfterSuite(func(ctx SpecContext) {
+	fmt.Fprintf(GinkgoWriter, "Tearing down test environment...\n")
+	cleanupTestEnv(ctx)
+})