Add ConfigMapGenerator and test.

plugin/builtin/ConfigMapGenerator_test.go

@@ -0,0 +1,53 @@
+package builtin
+
+import (
+	"testing"
+
+	"sigs.k8s.io/kustomize/internal/plugintest"
+	"sigs.k8s.io/kustomize/k8sdeps/kv/plugin"
+	"sigs.k8s.io/kustomize/pkg/kusttest"
+	"sigs.k8s.io/kustomize/pkg/loader"
+)
+
+func TestConfigMapGenerator(t *testing.T) {
+	tc := plugintest_test.NewPluginTestEnv(t).Set()
+	defer tc.Reset()
+
+	tc.BuildGoPlugin(
+		"builtin", "", "ConfigMapGenerator")
+
+	th := kusttest_test.NewKustTestHarnessFull(
+		t, "/app", loader.RestrictionRootOnly, plugin.ActivePluginConfig())
+
+	th.WriteF("/app/devops.env", `
+SERVICE_PORT=32
+`)
+	th.WriteF("/app/uxteam.env", `
+COLOR=red
+`)
+
+	rm := th.LoadAndRunGenerator(`
+apiVersion: builtin
+kind: ConfigMapGenerator
+metadata:
+  name: myMap
+envFiles:
+- devops.env
+- uxteam.env
+literals:
+- FRUIT=apple
+- VEGETABLE=carrot
+`)
+
+	th.AssertActualEqualsExpected(rm, `
+apiVersion: v1
+data:
+  COLOR: red
+  FRUIT: apple
+  SERVICE_PORT: "32"
+  VEGETABLE: carrot
+kind: ConfigMap
+metadata:
+  name: myMap
+`)
+}