Fix regression 4388

api/krusty/legacy_order_test.go

@@ -0,0 +1,62 @@
+package krusty_test
+
+import (
+	"testing"
+
+	kusttest_test "sigs.k8s.io/kustomize/api/testutils/kusttest"
+)
+
+func TestIssue4388(t *testing.T) {
+	th := kusttest_test.MakeHarness(t)
+	th.WriteK(".", `
+resources:
+- resources.yaml
+`)
+	th.WriteF("resources.yaml", `
+apiVersion: v1
+kind: ConfigMap
+metadata:
+  name: testing
+data:
+  key: value
+---
+apiVersion: v1
+kind: ConfigMap
+metadata:
+  name: testing-one
+data:
+  key: value
+---
+apiVersion: v1
+kind: ConfigMap
+metadata:
+  name: testing-two
+data:
+  key: value
+`)
+	opts := th.MakeDefaultOptions()
+	opts.DoLegacyResourceSort = true
+	m := th.Run(".", opts)
+	th.AssertActualEqualsExpected(m, `
+apiVersion: v1
+data:
+  key: value
+kind: ConfigMap
+metadata:
+  name: testing
+---
+apiVersion: v1
+data:
+  key: value
+kind: ConfigMap
+metadata:
+  name: testing-one
+---
+apiVersion: v1
+data:
+  key: value
+kind: ConfigMap
+metadata:
+  name: testing-two
+`)
+}