add PatchJson6902Factory to make transformer

pkg/patch/transformer/factory_test.go

@@ -0,0 +1,156 @@
+/*
+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 transformer
+
+import (
+	"strings"
+	"testing"
+
+	yaml "gopkg.in/yaml.v2"
+
+	"github.com/kubernetes-sigs/kustomize/pkg/internal/loadertest"
+	"github.com/kubernetes-sigs/kustomize/pkg/patch"
+)
+
+func TestNewPatchJson6902FactoryNull(t *testing.T) {
+	p := patch.PatchJson6902{
+		Target: &patch.Target{
+			Name: "some-name",
+		},
+	}
+	f, err := NewPatchJson6902Factory(nil, p)
+	if err != nil {
+		t.Fatalf("unexpected error : %v", err)
+	}
+	if f != nil {
+		t.Fatal("a nil should be returned")
+	}
+}
+
+func TestNewPatchJson6902FactoryNoTarget(t *testing.T) {
+	p := patch.PatchJson6902{}
+	_, err := NewPatchJson6902Factory(nil, p)
+	if err == nil {
+		t.Fatal("expected error")
+	}
+	if !strings.Contains(err.Error(), "must specify the target field in patchesJson6902") {
+		t.Fatalf("incorrect error returned: %v", err)
+	}
+}
+
+func TestNewPatchJson6902FactoryConflict(t *testing.T) {
+	jsonPatch := []byte(`
+target:
+  name: some-name
+  kind: Deployment
+jsonPatch:
+  - op: replace
+    path: /spec/template/spec/containers/0/name
+    value: my-nginx
+  - op: add
+    path: /spec/template/spec/containers/0/command
+    value: [arg1,arg2,arg3]
+path: /some/dir/some/file
+`)
+	p := patch.PatchJson6902{}
+	err := yaml.Unmarshal(jsonPatch, &p)
+	if err != nil {
+		t.Fatalf("expected error %v", err)
+	}
+	_, err = NewPatchJson6902Factory(nil, p)
+	if err == nil {
+		t.Fatal("expected error")
+	}
+	if !strings.Contains(err.Error(), "cannot specify path and jsonPath at the same time") {
+		t.Fatalf("incorrect error returned %v", err)
+	}
+}
+
+func TestNewPatchJson6902FactoryJSON(t *testing.T) {
+	ldr := loadertest.NewFakeLoader("/testpath")
+	operations := []byte(`[
+        {"op": "replace", "path": "/spec/template/spec/containers/0/name", "value": "my-nginx"},
+        {"op": "add", "path": "/spec/replica", "value": "3"},
+        {"op": "add", "path": "/spec/template/spec/containers/0/command", "value": ["arg1", "arg2", "arg3"]}
+]`)
+	err := ldr.AddFile("/testpath/patch.json", operations)
+	if err != nil {
+		t.Fatalf("Failed to setup fake ldr.")
+	}
+
+	jsonPatch := []byte(`
+target:
+  kind: Deployment
+  name: some-name
+path: /testpath/patch.json
+`)
+	p := patch.PatchJson6902{}
+	err = yaml.Unmarshal(jsonPatch, &p)
+	if err != nil {
+		t.Fatal("expected error")
+	}
+
+	f, err := NewPatchJson6902Factory(ldr, p)
+	if err != nil {
+		t.Fatalf("unexpected error : %v", err)
+	}
+	if f == nil {
+		t.Fatalf("the returned factory shouldn't be nil ")
+	}
+
+	_, err = f.MakePatchJson6902Transformer()
+	if err != nil {
+		t.Fatalf("unexpected error : %v", err)
+	}
+}
+
+func TestNewPatchJson6902FactoryYAML(t *testing.T) {
+	jsonPatch := []byte(`
+target:
+  name: some-name
+  kind: Deployment
+jsonPatch:
+- op: replace
+  path: /spec/template/spec/containers/0/name
+  value: my-nginx
+- op: add
+  path: /spec/replica
+  value: 3
+- op: add
+  path: /spec/template/spec/containers/0/command
+  value: ["arg1", "arg2", "arg3"]
+`)
+	p := patch.PatchJson6902{}
+	err := yaml.Unmarshal(jsonPatch, &p)
+	if err != nil {
+		t.Fatalf("unexpected error : %v", err)
+	}
+
+	f, err := NewPatchJson6902Factory(nil, p)
+	if err != nil {
+		t.Fatalf("unexpected error : %v", err)
+	}
+	if f == nil {
+		t.Fatalf("the returned factory shouldn't be nil ")
+	}
+
+	_, err = f.MakePatchJson6902Transformer()
+	if err != nil {
+		t.Fatalf("unexpected error : %v", err)
+	}
+
+}