put namespace objects first in the output

pkg/resmap/idslice_test.go

@@ -0,0 +1,45 @@
+/*
+Copyright 2018 The Kubernetes Authors.
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/
+
+package resmap
+
+import (
+	"reflect"
+	"sort"
+	"testing"
+
+	"github.com/kubernetes-sigs/kustomize/pkg/resource"
+	"k8s.io/apimachinery/pkg/runtime/schema"
+)
+
+func TestLess(t *testing.T) {
+	ids := IdSlice{
+		resource.NewResId(schema.GroupVersionKind{Kind: "ConfigMap"}, "cm"),
+		resource.NewResId(schema.GroupVersionKind{Kind: "Pod"}, "pod"),
+		resource.NewResId(schema.GroupVersionKind{Kind: "Namespace"}, "ns1"),
+		resource.NewResId(schema.GroupVersionKind{Kind: "Namespace"}, "ns2"),
+	}
+	expected := IdSlice{
+		resource.NewResId(schema.GroupVersionKind{Kind: "Namespace"}, "ns1"),
+		resource.NewResId(schema.GroupVersionKind{Kind: "Namespace"}, "ns2"),
+		resource.NewResId(schema.GroupVersionKind{Kind: "ConfigMap"}, "cm"),
+		resource.NewResId(schema.GroupVersionKind{Kind: "Pod"}, "pod"),
+	}
+	sort.Sort(ids)
+	if !reflect.DeepEqual(ids, expected) {
+		t.Fatalf("expected %+v but got %+v", expected, ids)
+	}
+}