Isolated content of pkg/kustomize

pkg/commands/util_test.go

@@ -0,0 +1,90 @@
+/*
+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 commands
+
+import (
+	"reflect"
+	"strings"
+	"testing"
+
+	"k8s.io/kubectl/pkg/kustomize/constants"
+	"k8s.io/kubectl/pkg/kustomize/types"
+	"k8s.io/kubectl/pkg/kustomize/util/fs"
+)
+
+func TestWriteAndRead(t *testing.T) {
+	kustomization := &types.Kustomization{
+		NamePrefix: "prefix",
+	}
+
+	fsys := fs.MakeFakeFS()
+	fsys.Create(constants.KustomizationFileName)
+	mf, err := newKustomizationFile(constants.KustomizationFileName, fsys)
+	if err != nil {
+		t.Fatalf("Unexpected Error: %v", err)
+	}
+
+	if err := mf.write(kustomization); err != nil {
+		t.Fatalf("Couldn't write kustomization file: %v\n", err)
+	}
+
+	content, err := mf.read()
+	if err != nil {
+		t.Fatalf("Couldn't read kustomization file: %v\n", err)
+	}
+	if !reflect.DeepEqual(kustomization, content) {
+		t.Fatal("Read kustomization is different from written kustomization")
+	}
+}
+
+func TestEmptyFile(t *testing.T) {
+	fsys := fs.MakeFakeFS()
+	_, err := newKustomizationFile("", fsys)
+	if err == nil {
+		t.Fatalf("Create kustomizationFile from empty filename should fail")
+	}
+}
+
+func TestNewNotExist(t *testing.T) {
+	badSuffix := "foo.bar"
+	fakeFS := fs.MakeFakeFS()
+	fakeFS.Mkdir(".", 0644)
+	fakeFS.Create(badSuffix)
+	_, err := newKustomizationFile(constants.KustomizationFileName, fakeFS)
+	if err == nil {
+		t.Fatalf("expect an error")
+	}
+	contained := "Missing kustomization file"
+	if !strings.Contains(err.Error(), contained) {
+		t.Fatalf("expect an error contains %q, but got %v", contained, err)
+	}
+	_, err = newKustomizationFile(constants.KustomizationFileName, fakeFS)
+	if err == nil {
+		t.Fatalf("expect an error")
+	}
+	if !strings.Contains(err.Error(), contained) {
+		t.Fatalf("expect an error contains %q, but got %v", contained, err)
+	}
+	_, err = newKustomizationFile(badSuffix, fakeFS)
+	if err == nil {
+		t.Fatalf("expect an error")
+	}
+	contained = "should have .yaml suffix"
+	if !strings.Contains(err.Error(), contained) {
+		t.Fatalf("expect an error contains %q, but got %v", contained, err)
+	}
+}