diff --git a/pkg/target/customconfigofbuiltinplugin_test.go b/pkg/target/customconfigofbuiltinplugin_test.go
new file mode 100644
index 000000000..212aa6c71
--- /dev/null
+++ b/pkg/target/customconfigofbuiltinplugin_test.go
@@ -0,0 +1,102 @@
+// Copyright 2019 The Kubernetes Authors.
+// SPDX-License-Identifier: Apache-2.0
+
+package target_test
+
+import (
+	"testing"
+
+	kusttest_test "sigs.k8s.io/kustomize/v3/pkg/kusttest"
+	plugins_test "sigs.k8s.io/kustomize/v3/pkg/plugins/test"
+)
+
+// Demo custom configuration of a builtin transformation.
+// This is a NamePrefixer that only touches Deployments
+// and Services.
+func TestCustomNamePrefixer(t *testing.T) {
+	tc := plugins_test.NewEnvForTest(t).Set()
+	defer tc.Reset()
+
+	tc.BuildGoPlugin(
+		"builtin", "", "PrefixSuffixTransformer")
+
+	th := kusttest_test.NewKustTestPluginHarness(t, "/app")
+
+	th.WriteK("/app", `
+resources:
+- deployment.yaml
+- role.yaml
+- service.yaml
+transformers:
+- prefixer.yaml
+`)
+	th.WriteF("/app/prefixer.yaml", `
+apiVersion: builtin
+kind: PrefixSuffixTransformer
+metadata:
+  name: customPrefixer
+prefix: zzz-
+fieldSpecs:
+- kind: Deployment
+  path: metadata/name
+- kind: Service
+  path: metadata/name
+`)
+	th.WriteF("/app/deployment.yaml", `
+apiVersion: apps/v1
+kind: Deployment
+metadata:
+  name: myDeployment
+spec:
+  template:
+    metadata:
+      labels:
+        backend: awesome
+    spec:
+      containers:
+      - name: whatever
+        image: whatever
+`)
+	th.WriteF("/app/role.yaml", `
+apiVersion: v1
+kind: Role
+metadata:
+  name: myRole
+`)
+	th.WriteF("/app/service.yaml", `
+apiVersion: v1
+kind: Service
+metadata:
+  name: myService
+`)
+
+	m, err := th.MakeKustTarget().MakeCustomizedResMap()
+	if err != nil {
+		t.Fatalf("Err: %v", err)
+	}
+	th.AssertActualEqualsExpected(m, `
+apiVersion: apps/v1
+kind: Deployment
+metadata:
+  name: zzz-myDeployment
+spec:
+  template:
+    metadata:
+      labels:
+        backend: awesome
+    spec:
+      containers:
+      - image: whatever
+        name: whatever
+---
+apiVersion: v1
+kind: Role
+metadata:
+  name: myRole
+---
+apiVersion: v1
+kind: Service
+metadata:
+  name: zzz-myService
+`)
+}