diff --git a/api/krusty/helmchartinflationgenerator_test.go b/api/krusty/helmchartinflationgenerator_test.go
index b2a3539e5..b49d84ce5 100644
--- a/api/krusty/helmchartinflationgenerator_test.go
+++ b/api/krusty/helmchartinflationgenerator_test.go
@@ -81,3 +81,156 @@ helmCharts:
 	m := th.Run(th.GetRoot(), th.MakeOptionsPluginsEnabled())
 	th.AssertActualEqualsExpected(m, expectedHelm)
 }
+
+// Last mile helm - show how kustomize puts helm charts into different
+// namespaces with different customizations.
+func TestHelmChartProdVsDev(t *testing.T) {
+	th := kusttest_test.MakeEnhancedHarnessWithTmpRoot(t)
+	defer th.Reset()
+	if err := th.ErrIfNoHelm(); err != nil {
+		t.Skip("skipping: " + err.Error())
+	}
+	dirBase := th.MkDir("base")
+	dirProd := th.MkDir("prod")
+	dirDev := th.MkDir("dev")
+	dirBoth := th.MkDir("both")
+
+	th.WriteK(dirBase, `
+helmCharts:
+- name: minecraft
+  repo: https://itzg.github.io/minecraft-server-charts
+  version: 3.1.3
+  releaseName: test
+`)
+	th.WriteK(dirProd, `
+namespace: prod
+namePrefix: myProd-
+resources:
+- ../base
+`)
+	th.WriteK(dirDev, `
+namespace: dev
+namePrefix: myDev-
+resources:
+- ../base
+`)
+	th.WriteK(dirBoth, `
+resources:
+- ../dev
+- ../prod
+`)
+
+	// Base unchanged
+	m := th.Run(dirBase, th.MakeOptionsPluginsEnabled())
+	th.AssertActualEqualsExpected(m, expectedHelm)
+
+	// Prod has a "prod" namespace and a prefix.
+	m = th.Run(dirProd, th.MakeOptionsPluginsEnabled())
+	th.AssertActualEqualsExpected(m, `
+apiVersion: v1
+data:
+  rcon-password: Q0hBTkdFTUUh
+kind: Secret
+metadata:
+  labels:
+    app: test-minecraft
+    chart: minecraft-3.1.3
+    heritage: Helm
+    release: test
+  name: myProd-test-minecraft
+  namespace: prod
+type: Opaque
+---
+apiVersion: v1
+kind: Service
+metadata:
+  labels:
+    app: test-minecraft
+    chart: minecraft-3.1.3
+    heritage: Helm
+    release: test
+  name: myProd-test-minecraft
+  namespace: prod
+spec:
+  ports:
+  - name: minecraft
+    port: 25565
+    protocol: TCP
+    targetPort: minecraft
+  selector:
+    app: test-minecraft
+  type: ClusterIP
+`)
+
+	// Both has two namespaces.
+	m = th.Run(dirBoth, th.MakeOptionsPluginsEnabled())
+	th.AssertActualEqualsExpected(m, `
+apiVersion: v1
+data:
+  rcon-password: Q0hBTkdFTUUh
+kind: Secret
+metadata:
+  labels:
+    app: test-minecraft
+    chart: minecraft-3.1.3
+    heritage: Helm
+    release: test
+  name: myDev-test-minecraft
+  namespace: dev
+type: Opaque
+---
+apiVersion: v1
+kind: Service
+metadata:
+  labels:
+    app: test-minecraft
+    chart: minecraft-3.1.3
+    heritage: Helm
+    release: test
+  name: myDev-test-minecraft
+  namespace: dev
+spec:
+  ports:
+  - name: minecraft
+    port: 25565
+    protocol: TCP
+    targetPort: minecraft
+  selector:
+    app: test-minecraft
+  type: ClusterIP
+---
+apiVersion: v1
+data:
+  rcon-password: Q0hBTkdFTUUh
+kind: Secret
+metadata:
+  labels:
+    app: test-minecraft
+    chart: minecraft-3.1.3
+    heritage: Helm
+    release: test
+  name: myProd-test-minecraft
+  namespace: prod
+type: Opaque
+---
+apiVersion: v1
+kind: Service
+metadata:
+  labels:
+    app: test-minecraft
+    chart: minecraft-3.1.3
+    heritage: Helm
+    release: test
+  name: myProd-test-minecraft
+  namespace: prod
+spec:
+  ports:
+  - name: minecraft
+    port: 25565
+    protocol: TCP
+    targetPort: minecraft
+  selector:
+    app: test-minecraft
+  type: ClusterIP
+`)
+}