regression test for panic on duplicate keys

api/krusty/duplicatekeys_test.go

@@ -0,0 +1,39 @@
+package krusty_test
+
+import (
+	"testing"
+
+	kusttest_test "sigs.k8s.io/kustomize/api/testutils/kusttest"
+)
+
+func TestDuplicateKeys(t *testing.T) {
+	th := kusttest_test.MakeHarness(t)
+	th.WriteK(".", `
+resources:
+- resources.yaml
+`)
+	th.WriteF("resources.yaml", `
+apiVersion: apps/v1
+kind: Deployment
+metadata:
+  name: podinfo
+spec:
+  selector:
+    matchLabels:
+      app: podinfo
+  template:
+    spec:
+      containers:
+      - name: podinfod
+        image: ghcr.io/stefanprodan/podinfo:5.0.3 
+        command:
+        - ./podinfo
+        env:
+        - name: PODINFO_UI_COLOR
+          value: "#34577c"
+        env:
+          - name: PODINFO_UI_COLOR
+            value: "#34577c"
+`)
+	th.RunWithErr(".", th.MakeDefaultOptions())
+}