From c113c41c9cc63ed8d08b440de5bc49ce5eabd790 Mon Sep 17 00:00:00 2001
From: jregan <jregan@google.com>
Date: Mon, 28 Dec 2020 09:53:34 -0800
Subject: [PATCH] Regression coverage for configmap generation.

---
 api/krusty/configmaps_test.go | 31 +++++++++++++++++++++++++++++++
 1 file changed, 31 insertions(+)

diff --git a/api/krusty/configmaps_test.go b/api/krusty/configmaps_test.go
index 5736206c8..7fa15ce46 100644
--- a/api/krusty/configmaps_test.go
+++ b/api/krusty/configmaps_test.go
@@ -258,6 +258,37 @@ metadata:
 `)
 }
 
+func TestIssue3393(t *testing.T) {
+	th := kusttest_test.MakeHarness(t)
+	th.WriteK(".", `
+resources:
+- cm.yaml
+configMapGenerator:
+  - name: project
+    behavior: merge
+    literals:
+    - ANOTHER_ENV_VARIABLE="bar"
+`)
+	th.WriteF("cm.yaml", `
+apiVersion: v1
+kind: ConfigMap
+metadata:
+  name: project
+data:
+  A_FIRST_ENV_VARIABLE: "foo"
+`)
+	m := th.Run(".", th.MakeDefaultOptions())
+	th.AssertActualEqualsExpected(m, `
+apiVersion: v1
+data:
+  A_FIRST_ENV_VARIABLE: foo
+  ANOTHER_ENV_VARIABLE: bar
+kind: ConfigMap
+metadata:
+  name: project
+`)
+}
+
 func TestGeneratorSimpleOverlay(t *testing.T) {
 	th := kusttest_test.MakeHarness(t)
 	th.WriteK("base", `