diff --git a/.gitea/actions/go-cache-key/action.yaml b/.gitea/actions/go-cache-key/action.yaml
new file mode 100644
index 0000000..929e530
--- /dev/null
+++ b/.gitea/actions/go-cache-key/action.yaml
@@ -0,0 +1,17 @@
+name: Go Cache Key
+description: Create a cache key for Go dependencies
+
+outputs:
+  hash:
+    description: The cache key for Go dependencies
+    value: ${{ steps.hash-go.outputs.hash }}
+
+runs:
+  using: composite
+  steps:
+    - name: Create cache key
+      shell: bash
+      id: hash-go
+      run: |
+        echo "hash=$(sha256sum go.mod go.sum | sha256sum | cut -d' ' -f1)" >> "$GITHUB_OUTPUT"
+        echo "hash=$hash" >> "$GITHUB_OUTPUT"
diff --git a/.gitea/workflows/ci.yaml b/.gitea/workflows/ci.yaml
index a910bf1..f74412e 100644
--- a/.gitea/workflows/ci.yaml
+++ b/.gitea/workflows/ci.yaml
@@ -8,30 +8,76 @@ env:
   RUNNER_TOOL_CACHE: /toolcache
 
 jobs:
-  test:
-    name: test
+  install-dependencies:
+    name: install dependencies
     runs-on:
       - ubuntu-latest
     steps:
       - name: Checkout
         uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6.0.2
-      - name: Setup go
-        uses: actions/setup-go@4a3601121dd01d1626a1e23e37211e3254c1c06c # v6
+      - name: Install dependencies
+        uses: .gitea/workflows/install-go-dependencies
+
+  build-check:
+    name: build check
+    runs-on:
+      - ubuntu-latest
+    needs: install-dependencies
+    steps:
+      - name: Checkout
+        uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6.0.2
+      - name: Run build script
+        uses: .gitea/workflows/run-go-script
         with:
-          go-version-file: go.mod
-          check-latest: true
-      - name: Create cache key
-        id: hash-go
-        run: echo "hash=$(sha256sum go.mod go.sum | sha256sum | cut -d' ' -f1)" >> "$GITHUB_OUTPUT"
-      - name: cache go
-        id: cache-go
-        uses: actions/cache@27d5ce7f107fe9357f9df03efb73ab90386fccae # v5
+          script: build
+
+  check-format:
+    name: check format
+    runs-on:
+      - ubuntu-latest
+    needs: build-check
+    steps:
+      - name: Checkout
+        uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6.0.2
+      - name: Run check format script
+        uses: .gitea/workflows/run-go-script
         with:
-          path: |
-            /go_path
-            /go_cache
-          key: go_path-${{ steps.hash-go.outputs.hash }}
-          restore-keys: |-
-            go_cache-${{ steps.hash-go.outputs.hash }}
-      - name: build
-        run: make build
+          script: check-format
+
+  check-lint:
+    name: check lint
+    runs-on:
+      - ubuntu-latest
+    needs: build-check
+    steps:
+      - name: Checkout
+        uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6.0.2
+      - name: Run check lint script
+        uses: .gitea/workflows/run-go-script
+        with:
+          script: check-lint
+
+  test:
+    name: test
+    runs-on:
+      - ubuntu-latest
+    needs: build-check
+    steps:
+      - name: Checkout
+        uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6.0.2
+      - name: Run test script
+        uses: .gitea/workflows/run-go-script
+        with:
+          script: test
+
+  image-check:
+    name: image check
+    runs-on:
+      - ubuntu-latest
+      - linux_amd64
+    needs: build-check
+    steps:
+      - name: Checkout
+        uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6.0.2
+      - name: Build image
+        run: make build-image
diff --git a/.gitea/workflows/install-go-dependencies.yaml b/.gitea/workflows/install-go-dependencies.yaml
new file mode 100644
index 0000000..90ddd67
--- /dev/null
+++ b/.gitea/workflows/install-go-dependencies.yaml
@@ -0,0 +1,28 @@
+name: Install Go Dependencies
+
+on:
+  workflow_call:
+
+jobs:
+  install-dependencies:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout
+        uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6.0.2
+      - name: Setup go
+        uses: actions/setup-go@4a3601121dd01d1626a1e23e37211e3254c1c06c # v6.4.0.4.0
+        with:
+          go-version-file: go.mod
+          check-latest: true
+      - name: Create cache key
+        uses: .gitea/actions/go-cache-key@main
+      - name: cache go
+        id: cache-go
+        uses: actions/cache@27d5ce7f107fe9357f9df03efb73ab90386fccae # v5.0.5
+        with:
+          path: |
+            /go_path
+            /go_cache
+          key: go_path-${{ steps.hash-go.outputs.hash }}
+          restore-keys: |-
+            go_cache-${{ steps.hash-go.outputs.hash }}
diff --git a/.gitea/workflows/run-go-script.yaml b/.gitea/workflows/run-go-script.yaml
new file mode 100644
index 0000000..53b7172
--- /dev/null
+++ b/.gitea/workflows/run-go-script.yaml
@@ -0,0 +1,35 @@
+name: Run Go Script
+
+on:
+  workflow_call:
+    inputs:
+      script:
+        description: The script to run
+        required: true
+        type: string
+
+jobs:
+  run-script:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout
+        uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6.0.2
+      - name: Setup go
+        uses: actions/setup-go@4a3601121dd01d1626a1e23e37211e3254c1c06c # v6.4.0
+        with:
+          go-version-file: go.mod
+          check-latest: true
+      - name: Create cache key
+        uses: .gitea/actions/go-cache-key@main
+      - name: Install dependencies from Cache
+        id: cache-go
+        uses: actions/cache@27d5ce7f107fe9357f9df03efb73ab90386fccae # v5.0.5
+        with:
+          path: |
+            /go_path
+            /go_cache
+          key: go_path-${{ steps.hash-go.outputs.hash }}
+          restore-keys: |-
+            go_cache-${{ steps.hash-go.outputs.hash }}
+      - name: Run script
+        run: make ${{ inputs.script }}
diff --git a/.gitignore b/.gitignore
index 5f56073..f72610b 100644
--- a/.gitignore
+++ b/.gitignore
@@ -14,6 +14,7 @@
 
 # Output of the go coverage tool, specifically when used with LiteIDE
 *.out
+lcov.info
 
 # Dependency directories (remove the comment below to include it)
 # vendor/
diff --git a/Makefile b/Makefile
index 0c34b95..788ed27 100644
--- a/Makefile
+++ b/Makefile
@@ -2,14 +2,39 @@ ifneq (,$(wildcard ./.env))
     include .env
     export
 endif
-.PHONY: build run codegen
+.PHONY: build run codegen build-image test test-unit test-coverage lint format check-format
 
 build:
 	go build -o main
 
+build-image:
+	docker build -t authentik-kubernetes-operator:latest .
+
 run:
 	make build
 	./main --kubeconfig=/home/tbehrendt/.kube/config
 
 codegen:
 	./scripts/codegen.sh
+
+test: test-unit test-coverage
+
+test-unit:
+	go test . -coverprofile=coverage.out
+
+test-coverage:
+	go tool gcov2lcov -infile coverage.out > lcov.info
+
+lint:
+	go vet ./...
+
+format:
+	gofmt -w .
+
+check-format:
+	@OUTPUT=$$(gofmt -l .); \
+	if [ -n "$$OUTPUT" ]; then \
+		echo "Formatter failed for:"; \
+		echo "$$OUTPUT"; \
+		exit 1; \
+	fi
diff --git a/controller.go b/controller.go
index a1dbd81..2330bf3 100644
--- a/controller.go
+++ b/controller.go
@@ -210,7 +210,7 @@ func (c *Controller) reconcileDelete(ctx context.Context, pp *v1alpha1.ProxyProv
 	r, err := c.authentik.ProvidersApi.ProvidersProxyDestroy(ctx, int32(pk)).Execute()
 	if err != nil {
 		// This handles an edge-case, where when the ProxyProvider on Authentik has already been deleted, but the finalizer is still present. We just remove the finalizer and return.
-		if r.StatusCode != http.StatusNotFound {
+		if r != nil && r.StatusCode != http.StatusNotFound {
 			return fmt.Errorf("error when calling `ProvidersAPI.ProvidersProxyDestroy`: %w with response %v", err, r)
 		}
 	}
@@ -226,13 +226,14 @@ func (c *Controller) reconcileUpdate(ctx context.Context, pp *v1alpha1.ProxyProv
 		return fmt.Errorf("error parsing PK: %v", err)
 	}
 	_, r, err := c.authentik.ProvidersApi.ProvidersAllRetrieve(ctx, int32(pk)).Execute()
-	if err != nil && r.StatusCode != http.StatusNotFound {
-
+	if err != nil {
+		if r != nil && r.StatusCode == http.StatusNotFound {
+			// This handles an edge-case, where when the PorxyProvider on Authentik has been deleted, e.g. by mistake. We just remove the PK and return.
+			// During the next reconciliation, the ProxyProvider will be re-created.
+			pp.Status.PK = ""
+			return c.updateProxyProviderStatus(ctx, pp)
+		}
 		return fmt.Errorf("error retrieving existing ProxyProvider: %v with response %v", err, r)
-	} else if r.StatusCode == http.StatusNotFound {
-		// This handles an edge-case, where when the PorxyProvider on Authentik has been deleted, e.g. by mistake. We just remove the PK and return.
-		// During the next reconciliation, the ProxyProvider will be re-created.
-		pp.Status.PK = ""
 	}
 
 	proxyProviderRequest := &authentikapi.PatchedProxyProviderRequest{
diff --git a/controller_test.go b/controller_test.go
new file mode 100644
index 0000000..8d3c13b
--- /dev/null
+++ b/controller_test.go
@@ -0,0 +1,385 @@
+// AI generated tests and not yet reviewed.
+package main
+
+import (
+	"context"
+	"encoding/json"
+	"net/http"
+	"net/http/httptest"
+	"net/url"
+	"slices"
+	"strings"
+	"testing"
+
+	v1alpha1 "gitea.t000-n.de/t.behrendt/authentik-kubernetes-operator/pkg/apis/proxyprovider/v1alpha1"
+	operatorfake "gitea.t000-n.de/t.behrendt/authentik-kubernetes-operator/pkg/generated/clientset/versioned/fake"
+	operatorinformers "gitea.t000-n.de/t.behrendt/authentik-kubernetes-operator/pkg/generated/informers/externalversions"
+	authentikapi "goauthentik.io/api/v3"
+	metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
+	"k8s.io/apimachinery/pkg/runtime"
+	"k8s.io/client-go/kubernetes/fake"
+	"k8s.io/client-go/tools/cache"
+)
+
+func TestController_syncHandler_create(t *testing.T) {
+	const wantPK = 42
+
+	server := newAuthentikTestServer(t, authentikTestHandlers{
+		proxyCreate: func(w http.ResponseWriter, _ *http.Request) {
+			writeJSON(t, w, http.StatusCreated, map[string]any{"pk": wantPK})
+		},
+	})
+	t.Cleanup(server.Close)
+
+	ctrl, ctx, cancel := newTestController(t, testProxyProvider(), server.URL)
+	t.Cleanup(cancel)
+
+	err := ctrl.syncHandler(ctx, cache.ObjectName{Namespace: "default", Name: "test-pp"})
+	if err != nil {
+		t.Fatalf("syncHandler() error = %v", err)
+	}
+
+	got := getProxyProvider(t, ctrl, "default", "test-pp")
+	if got.Status.PK != "42" {
+		t.Fatalf("status.pk = %q, want 42", got.Status.PK)
+	}
+}
+
+func TestController_syncHandler_ensureFinalizers(t *testing.T) {
+	pp := testProxyProvider()
+	pp.Status.PK = "42"
+
+	server := newAuthentikTestServer(t, authentikTestHandlers{})
+	t.Cleanup(server.Close)
+
+	ctrl, ctx, cancel := newTestController(t, pp, server.URL)
+	t.Cleanup(cancel)
+
+	err := ctrl.syncHandler(ctx, cache.ObjectName{Namespace: pp.Namespace, Name: pp.Name})
+	if err != nil {
+		t.Fatalf("syncHandler() error = %v", err)
+	}
+
+	got := getProxyProvider(t, ctrl, pp.Namespace, pp.Name)
+	if !slices.Contains(got.Finalizers, DeleteAuthentikProxyProviderFinalizer) {
+		t.Fatalf("finalizers = %v, want %q", got.Finalizers, DeleteAuthentikProxyProviderFinalizer)
+	}
+}
+
+func TestController_syncHandler_update(t *testing.T) {
+	pp := testProxyProvider()
+	pp.Status.PK = "42"
+	pp.Finalizers = []string{DeleteAuthentikProxyProviderFinalizer}
+
+	server := newAuthentikTestServer(t, authentikTestHandlers{
+		allRetrieve: func(w http.ResponseWriter, _ *http.Request) {
+			writeJSON(t, w, http.StatusOK, map[string]any{"pk": 42})
+		},
+		proxyPartialUpdate: func(w http.ResponseWriter, _ *http.Request) {
+			writeJSON(t, w, http.StatusOK, map[string]any{"pk": 42})
+		},
+	})
+	t.Cleanup(server.Close)
+
+	ctrl, ctx, cancel := newTestController(t, pp, server.URL)
+	t.Cleanup(cancel)
+
+	err := ctrl.syncHandler(ctx, cache.ObjectName{Namespace: pp.Namespace, Name: pp.Name})
+	if err != nil {
+		t.Fatalf("syncHandler() error = %v", err)
+	}
+
+	got := getProxyProvider(t, ctrl, pp.Namespace, pp.Name)
+	if got.Status.PK != "42" {
+		t.Fatalf("status.pk = %q, want 42", got.Status.PK)
+	}
+}
+
+func TestController_syncHandler_update_providerNotFound(t *testing.T) {
+	pp := testProxyProvider()
+	pp.Status.PK = "42"
+	pp.Finalizers = []string{DeleteAuthentikProxyProviderFinalizer}
+
+	server := newAuthentikTestServer(t, authentikTestHandlers{
+		allRetrieve: func(w http.ResponseWriter, _ *http.Request) {
+			http.NotFound(w, nil)
+		},
+	})
+	t.Cleanup(server.Close)
+
+	ctrl, ctx, cancel := newTestController(t, pp, server.URL)
+	t.Cleanup(cancel)
+
+	err := ctrl.syncHandler(ctx, cache.ObjectName{Namespace: pp.Namespace, Name: pp.Name})
+	if err != nil {
+		t.Fatalf("syncHandler() error = %v", err)
+	}
+
+	got := getProxyProvider(t, ctrl, pp.Namespace, pp.Name)
+	if got.Status.PK != "" {
+		t.Fatalf("status.pk = %q, want empty after provider not found", got.Status.PK)
+	}
+}
+
+func TestController_syncHandler_delete(t *testing.T) {
+	now := metav1.Now()
+	pp := testProxyProvider()
+	pp.Status.PK = "42"
+	pp.DeletionTimestamp = &now
+	pp.Finalizers = []string{DeleteAuthentikProxyProviderFinalizer}
+
+	var destroyCalled bool
+	server := newAuthentikTestServer(t, authentikTestHandlers{
+		proxyDestroy: func(w http.ResponseWriter, r *http.Request) {
+			destroyCalled = true
+			if r.Method != http.MethodDelete {
+				t.Errorf("destroy method = %s, want DELETE", r.Method)
+			}
+			w.WriteHeader(http.StatusNoContent)
+		},
+	})
+	t.Cleanup(server.Close)
+
+	ctrl, ctx, cancel := newTestController(t, pp, server.URL)
+	t.Cleanup(cancel)
+
+	err := ctrl.syncHandler(ctx, cache.ObjectName{Namespace: pp.Namespace, Name: pp.Name})
+	if err != nil {
+		t.Fatalf("syncHandler() error = %v", err)
+	}
+	if !destroyCalled {
+		t.Fatal("expected Authentik destroy call")
+	}
+
+	got := getProxyProvider(t, ctrl, pp.Namespace, pp.Name)
+	if slices.Contains(got.Finalizers, DeleteAuthentikProxyProviderFinalizer) {
+		t.Fatalf("finalizers = %v, want finalizer removed", got.Finalizers)
+	}
+}
+
+func TestController_syncHandler_delete_providerAlreadyGone(t *testing.T) {
+	now := metav1.Now()
+	pp := testProxyProvider()
+	pp.Status.PK = "42"
+	pp.DeletionTimestamp = &now
+	pp.Finalizers = []string{DeleteAuthentikProxyProviderFinalizer}
+
+	server := newAuthentikTestServer(t, authentikTestHandlers{
+		proxyDestroy: func(w http.ResponseWriter, _ *http.Request) {
+			http.NotFound(w, nil)
+		},
+	})
+	t.Cleanup(server.Close)
+
+	ctrl, ctx, cancel := newTestController(t, pp, server.URL)
+	t.Cleanup(cancel)
+
+	err := ctrl.syncHandler(ctx, cache.ObjectName{Namespace: pp.Namespace, Name: pp.Name})
+	if err != nil {
+		t.Fatalf("syncHandler() error = %v", err)
+	}
+
+	got := getProxyProvider(t, ctrl, pp.Namespace, pp.Name)
+	if slices.Contains(got.Finalizers, DeleteAuthentikProxyProviderFinalizer) {
+		t.Fatalf("finalizers = %v, want finalizer removed after 404", got.Finalizers)
+	}
+}
+
+func TestController_syncHandler_notFound(t *testing.T) {
+	server := newAuthentikTestServer(t, authentikTestHandlers{})
+	t.Cleanup(server.Close)
+
+	ctrl, ctx, cancel := newTestController(t, nil, server.URL)
+	t.Cleanup(cancel)
+
+	err := ctrl.syncHandler(ctx, cache.ObjectName{Namespace: "default", Name: "missing"})
+	if err != nil {
+		t.Fatalf("syncHandler() error = %v, want nil for missing object", err)
+	}
+}
+
+func TestController_syncHandler_invalidPK(t *testing.T) {
+	pp := testProxyProvider()
+	pp.Status.PK = "not-a-number"
+	pp.Finalizers = []string{DeleteAuthentikProxyProviderFinalizer}
+
+	server := newAuthentikTestServer(t, authentikTestHandlers{})
+	t.Cleanup(server.Close)
+
+	ctrl, ctx, cancel := newTestController(t, pp, server.URL)
+	t.Cleanup(cancel)
+
+	err := ctrl.syncHandler(ctx, cache.ObjectName{Namespace: pp.Namespace, Name: pp.Name})
+	if err == nil {
+		t.Fatal("syncHandler() error = nil, want parse error")
+	}
+	if !strings.Contains(err.Error(), "error parsing PK") {
+		t.Fatalf("syncHandler() error = %v, want PK parse error", err)
+	}
+}
+
+func TestController_enqueueProxyProvider(t *testing.T) {
+	server := newAuthentikTestServer(t, authentikTestHandlers{})
+	t.Cleanup(server.Close)
+
+	ctrl, _, cancel := newTestController(t, testProxyProvider(), server.URL)
+	t.Cleanup(cancel)
+
+	ctrl.enqueueProxyProvider(testProxyProvider())
+
+	if ctrl.workqueue.Len() != 1 {
+		t.Fatalf("workqueue length = %d, want 1", ctrl.workqueue.Len())
+	}
+}
+
+// --- test helpers ---
+
+func testProxyProvider() *v1alpha1.ProxyProvider {
+	return &v1alpha1.ProxyProvider{
+		TypeMeta: metav1.TypeMeta{
+			APIVersion: v1alpha1.SchemeGroupVersion.String(),
+			Kind:       "ProxyProvider",
+		},
+		ObjectMeta: metav1.ObjectMeta{
+			Name:      "test-pp",
+			Namespace: "default",
+		},
+		Spec: v1alpha1.ProxyProviderSpec{
+			Name:              "my-app",
+			AuthorizationFlow: "flow-auth",
+			InvalidationFlow:  "flow-invalidate",
+			ExternalHost:      "https://app.example.com",
+		},
+	}
+}
+
+func newTestController(t *testing.T, pp *v1alpha1.ProxyProvider, authentikURL string) (*Controller, context.Context, context.CancelFunc) {
+	t.Helper()
+	ctx, cancel := context.WithCancel(context.Background())
+	ctrl, _, stop := newTestControllerWithContext(t, ctx, pp, authentikURL)
+	return ctrl, ctx, func() {
+		cancel()
+		stop()
+	}
+}
+
+func newTestControllerWithContext(t *testing.T, ctx context.Context, pp *v1alpha1.ProxyProvider, authentikURL string) (*Controller, context.Context, func()) {
+	t.Helper()
+
+	authentikClient := newAuthentikAPIClientForTest(t, authentikURL)
+
+	var objects []runtime.Object
+	if pp != nil {
+		objects = append(objects, pp)
+	}
+	proxyClient := operatorfake.NewSimpleClientset(objects...)
+
+	informerFactory := operatorinformers.NewSharedInformerFactory(proxyClient, 0)
+	proxyInformer := informerFactory.Proxyprovider().V1alpha1().ProxyProviders()
+
+	ctrl := NewController(ctx, fake.NewClientset(), proxyClient, authentikClient, proxyInformer)
+
+	informerFactory.Start(ctx.Done())
+	for informerType, synced := range informerFactory.WaitForCacheSync(ctx.Done()) {
+		if !synced {
+			t.Fatalf("informer %v failed to sync", informerType)
+		}
+	}
+
+	return ctrl, ctx, func() {}
+}
+
+func newAuthentikAPIClientForTest(t *testing.T, serverURL string) *authentikapi.APIClient {
+	t.Helper()
+
+	u, err := url.Parse(serverURL)
+	if err != nil {
+		t.Fatalf("parse server URL: %v", err)
+	}
+
+	cfg := authentikapi.NewConfiguration()
+	cfg.Scheme = u.Scheme
+	cfg.Host = u.Host
+
+	return authentikapi.NewAPIClient(cfg)
+}
+
+type authentikTestHandlers struct {
+	proxyCreate        http.HandlerFunc
+	proxyDestroy       http.HandlerFunc
+	proxyPartialUpdate http.HandlerFunc
+	allRetrieve        http.HandlerFunc
+}
+
+func newAuthentikTestServer(t *testing.T, handlers authentikTestHandlers) *httptest.Server {
+	t.Helper()
+
+	handler := http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
+		path := r.URL.Path
+
+		switch {
+		case path == "/api/v3/providers/proxy/" && r.Method == http.MethodPost:
+			if handlers.proxyCreate != nil {
+				handlers.proxyCreate(w, r)
+				return
+			}
+			http.NotFound(w, r)
+
+		case strings.HasPrefix(path, "/api/v3/providers/proxy/") && strings.HasSuffix(path, "/"):
+			idPath := strings.TrimPrefix(path, "/api/v3/providers/proxy/")
+			if idPath == "" {
+				http.NotFound(w, r)
+				return
+			}
+			switch r.Method {
+			case http.MethodDelete:
+				if handlers.proxyDestroy != nil {
+					handlers.proxyDestroy(w, r)
+					return
+				}
+				http.NotFound(w, r)
+			case http.MethodPatch:
+				if handlers.proxyPartialUpdate != nil {
+					handlers.proxyPartialUpdate(w, r)
+					return
+				}
+				http.NotFound(w, r)
+			default:
+				http.Error(w, "unexpected method on proxy instance", http.StatusMethodNotAllowed)
+			}
+
+		case strings.HasPrefix(path, "/api/v3/providers/all/") && strings.HasSuffix(path, "/"):
+			if r.Method == http.MethodGet && handlers.allRetrieve != nil {
+				handlers.allRetrieve(w, r)
+				return
+			}
+			http.NotFound(w, r)
+
+		default:
+			http.NotFound(w, r)
+		}
+	})
+
+	return httptest.NewServer(handler)
+}
+
+func writeJSON(t *testing.T, w http.ResponseWriter, status int, body any) {
+	t.Helper()
+	w.Header().Set("Content-Type", "application/json")
+	w.WriteHeader(status)
+	if err := json.NewEncoder(w).Encode(body); err != nil {
+		t.Fatalf("write JSON response: %v", err)
+	}
+}
+
+func getProxyProvider(t *testing.T, ctrl *Controller, namespace, name string) *v1alpha1.ProxyProvider {
+	t.Helper()
+
+	got, err := ctrl.proxyProviderClientset.ProxyproviderV1alpha1().ProxyProviders(namespace).Get(
+		context.Background(), name, metav1.GetOptions{},
+	)
+	if err != nil {
+		t.Fatalf("get ProxyProvider: %v", err)
+	}
+	return got
+}
diff --git a/go.mod b/go.mod
index b6e9adc..0f731a7 100644
--- a/go.mod
+++ b/go.mod
@@ -36,6 +36,7 @@ require (
 	github.com/go-openapi/swag/yamlutils v0.25.4 // indirect
 	github.com/google/gnostic-models v0.7.0 // indirect
 	github.com/google/uuid v1.6.0 // indirect
+	github.com/jandelgado/gcov2lcov v1.1.1 // indirect
 	github.com/json-iterator/go v1.1.12 // indirect
 	github.com/modern-go/concurrent v0.0.0-20180306012644-bacd9c7ef1dd // indirect
 	github.com/modern-go/reflect2 v1.0.3-0.20250322232337-35a7c28c31ee // indirect
@@ -60,3 +61,5 @@ require (
 )
 
 replace k8s.io/code-generator => ./code-generator
+
+tool github.com/jandelgado/gcov2lcov
diff --git a/go.sum b/go.sum
index 8e707e6..c63418c 100644
--- a/go.sum
+++ b/go.sum
@@ -49,6 +49,8 @@ github.com/google/go-cmp v0.7.0/go.mod h1:pXiqmnSA92OHEEa9HXL2W4E7lf9JzCmGVUdgjX
 github.com/google/gofuzz v1.0.0/go.mod h1:dBl0BpW6vV/+mYPU4Po3pmUjxk6FQPldtuIdl/M65Eg=
 github.com/google/uuid v1.6.0 h1:NIvaJDMOsjHA8n1jAhLSgzrAzy1Hgr+hNrb57e+94F0=
 github.com/google/uuid v1.6.0/go.mod h1:TIyPZe4MgqvfeYDBFedMoGGpEw/LqOeaOT+nhxU+yHo=
+github.com/jandelgado/gcov2lcov v1.1.1 h1:CHUNoAglvb34DqmMoZchnzDbA3yjpzT8EoUvVqcAY+s=
+github.com/jandelgado/gcov2lcov v1.1.1/go.mod h1:tMVUlMVtS1po2SB8UkADWhOT5Y5Q13XOce2AYU69JuI=
 github.com/json-iterator/go v1.1.12 h1:PV8peI4a0ysnczrg+LtxykD8LfKY9ML6u2jnxaEnrnM=
 github.com/json-iterator/go v1.1.12/go.mod h1:e30LSqwooZae/UwlEbR2852Gd8hjQvJoHmT4TnhNGBo=
 github.com/kr/pretty v0.3.1 h1:flRD4NNwYAUpkphVc1HcthR4KEIFJ65n8Mw5qdRn3LE=
@@ -71,9 +73,16 @@ github.com/rogpeppe/go-internal v1.14.1/go.mod h1:MaRKkUm5W0goXpeCfT7UZI6fk/L7L7
 github.com/spf13/pflag v1.0.10 h1:4EBh2KAYBwaONj6b2Ye1GiHfwjqyROoF4RwYO+vPwFk=
 github.com/spf13/pflag v1.0.10/go.mod h1:McXfInJRrz4CZXVZOBLb0bTZqETkiAhM9Iw0y3An2Bg=
 github.com/stretchr/objx v0.1.0/go.mod h1:HFkY916IF+rwdDfMAkV7OtwuqBVzrE8GR6GFx+wExME=
+github.com/stretchr/objx v0.4.0/go.mod h1:YvHI0jy2hoMjB+UWwv71VJQ9isScKT/TqJzVSSt89Yw=
+github.com/stretchr/objx v0.5.0/go.mod h1:Yh+to48EsGEfYuaHDzXPcE3xhTkx73EhmCGUpEOglKo=
+github.com/stretchr/objx v0.5.2/go.mod h1:FRsXN1f5AsAjCGJKqEizvkpNtU+EGNCLh3NxZ/8L+MA=
 github.com/stretchr/objx v0.5.3 h1:jmXUvGomnU1o3W/V5h2VEradbpJDwGrzugQQvL0POH4=
 github.com/stretchr/objx v0.5.3/go.mod h1:rDQraq+vQZU7Fde9LOZLr8Tax6zZvy4kuNKF+QYS+U0=
 github.com/stretchr/testify v1.3.0/go.mod h1:M5WIy9Dh21IEIfnGCwXGc5bZfKNJtfHm1UVUgZn+9EI=
+github.com/stretchr/testify v1.7.1/go.mod h1:6Fq8oRcR53rry900zMqJjRRixrwX3KX962/h/Wwjteg=
+github.com/stretchr/testify v1.8.0/go.mod h1:yNjHg4UonilssWZ8iaSj1OCr/vHnekPRkoO+kdMU+MU=
+github.com/stretchr/testify v1.8.4/go.mod h1:sz/lmYIOXD/1dqDmKjjqLyZ2RngseejIcXlSw2iwfAo=
+github.com/stretchr/testify v1.9.0/go.mod h1:r2ic/lqez/lEtzL7wO/rwa5dbSLXVDPFyf8C91i36aY=
 github.com/stretchr/testify v1.11.1 h1:7s2iGBzp5EwR7/aIZr8ao5+dra3wiQyKjjFuvgVKu7U=
 github.com/stretchr/testify v1.11.1/go.mod h1:wZwfW3scLgRK+23gO65QZefKpKQRnfz6sD981Nm4B6U=
 github.com/x448/float16 v0.8.4 h1:qLwI1I70+NjRFUR3zs1JPUCgaCXSh3SW62uAKT1mSBM=
@@ -107,6 +116,7 @@ gopkg.in/evanphx/json-patch.v4 v4.13.0 h1:czT3CmqEaQ1aanPc5SdlgQrrEIb8w/wwCvWWnf
 gopkg.in/evanphx/json-patch.v4 v4.13.0/go.mod h1:p8EYWUEYMpynmqDbY58zCKCFZw8pRWMG4EsWvDvM72M=
 gopkg.in/inf.v0 v0.9.1 h1:73M5CoZyi3ZLMOyDlQh031Cx6N9NDJ2Vvfl76EDAgDc=
 gopkg.in/inf.v0 v0.9.1/go.mod h1:cWUDdTG/fYaXco+Dcufb5Vnc6Gp2YChqWtbxRZE0mXw=
+gopkg.in/yaml.v3 v3.0.0-20200313102051-9f266ea9e77c/go.mod h1:K4uyk7z7BCEPqu6E+C64Yfv1cQ7kz7rIZviUmN+EgEM=
 gopkg.in/yaml.v3 v3.0.1 h1:fxVm/GzAzEWqLHuvctI91KS9hhNmmWOoWu0XTYJS7CA=
 gopkg.in/yaml.v3 v3.0.1/go.mod h1:K4uyk7z7BCEPqu6E+C64Yfv1cQ7kz7rIZviUmN+EgEM=
 k8s.io/api v0.0.0-20260509204538-0dfb117cc6ec h1:xf12Yh3ltN4fnNyP0CyyM0TwNVnZDfLJjV3+bf9fPFY=