Move typemeta.go to api/meta/meta.go

Prepares for the meta object to front multiple underlying types
when TypeMeta and ObjectMeta is split in internal and v1beta3, but
combined in v1beta1 and v1beta2

pkg/api/meta/meta_test.go

@@ -0,0 +1,197 @@
+/*
+Copyright 2014 Google Inc. All rights reserved.
+
+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 meta
+
+import (
+	"reflect"
+	"testing"
+
+	"github.com/GoogleCloudPlatform/kubernetes/pkg/runtime"
+	"github.com/GoogleCloudPlatform/kubernetes/pkg/util"
+)
+
+func TestGenericTypeMeta(t *testing.T) {
+	type TypeMeta struct {
+		Kind              string    `json:"kind,omitempty" yaml:"kind,omitempty"`
+		Name              string    `json:"name,omitempty" yaml:"name,omitempty"`
+		CreationTimestamp util.Time `json:"creationTimestamp,omitempty" yaml:"creationTimestamp,omitempty"`
+		SelfLink          string    `json:"selfLink,omitempty" yaml:"selfLink,omitempty"`
+		ResourceVersion   string    `json:"resourceVersion,omitempty" yaml:"resourceVersion,omitempty"`
+		APIVersion        string    `json:"apiVersion,omitempty" yaml:"apiVersion,omitempty"`
+	}
+	j := TypeMeta{
+		Name:            "foo",
+		APIVersion:      "a",
+		Kind:            "b",
+		ResourceVersion: "1",
+		SelfLink:        "some/place/only/we/know",
+	}
+	g, err := newGenericTypeMeta(reflect.ValueOf(&j).Elem())
+	if err != nil {
+		t.Fatalf("new err: %v", err)
+	}
+	// Prove g supports TypeMetaInterface.
+	jbi := TypeMetaInterface(g)
+	if e, a := "foo", jbi.ID(); e != a {
+		t.Errorf("expected %v, got %v", e, a)
+	}
+	if e, a := "a", jbi.APIVersion(); e != a {
+		t.Errorf("expected %v, got %v", e, a)
+	}
+	if e, a := "b", jbi.Kind(); e != a {
+		t.Errorf("expected %v, got %v", e, a)
+	}
+	if e, a := "1", jbi.ResourceVersion(); e != a {
+		t.Errorf("expected %v, got %v", e, a)
+	}
+	if e, a := "some/place/only/we/know", jbi.SelfLink(); e != a {
+		t.Errorf("expected %v, got %v", e, a)
+	}
+
+	jbi.SetID("bar")
+	jbi.SetAPIVersion("c")
+	jbi.SetKind("d")
+	jbi.SetResourceVersion("2")
+	jbi.SetSelfLink("google.com")
+
+	// Prove that jbi changes the original object.
+	if e, a := "bar", j.Name; e != a {
+		t.Errorf("expected %v, got %v", e, a)
+	}
+	if e, a := "c", j.APIVersion; e != a {
+		t.Errorf("expected %v, got %v", e, a)
+	}
+	if e, a := "d", j.Kind; e != a {
+		t.Errorf("expected %v, got %v", e, a)
+	}
+	if e, a := "2", j.ResourceVersion; e != a {
+		t.Errorf("expected %v, got %v", e, a)
+	}
+	if e, a := "google.com", j.SelfLink; e != a {
+		t.Errorf("expected %v, got %v", e, a)
+	}
+}
+
+type MyAPIObject struct {
+	runtime.TypeMeta `yaml:",inline" json:",inline"`
+}
+
+func (*MyAPIObject) IsAnAPIObject() {}
+
+type MyIncorrectlyMarkedAsAPIObject struct {
+}
+
+func (*MyIncorrectlyMarkedAsAPIObject) IsAnAPIObject() {}
+
+func TestResourceVersionerOfAPI(t *testing.T) {
+	type T struct {
+		runtime.Object
+		Expected string
+	}
+	testCases := map[string]T{
+		"empty api object":                   {&MyAPIObject{}, ""},
+		"api object with version":            {&MyAPIObject{TypeMeta: runtime.TypeMeta{ResourceVersion: "1"}}, "1"},
+		"pointer to api object with version": {&MyAPIObject{TypeMeta: runtime.TypeMeta{ResourceVersion: "1"}}, "1"},
+	}
+	versioning := NewTypeMetaResourceVersioner()
+	for key, testCase := range testCases {
+		actual, err := versioning.ResourceVersion(testCase.Object)
+		if err != nil {
+			t.Errorf("%s: unexpected error %#v", key, err)
+		}
+		if actual != testCase.Expected {
+			t.Errorf("%s: expected %v, got %v", key, testCase.Expected, actual)
+		}
+	}
+
+	failingCases := map[string]struct {
+		runtime.Object
+		Expected string
+	}{
+		"not a valid object to try": {&MyIncorrectlyMarkedAsAPIObject{}, "1"},
+	}
+	for key, testCase := range failingCases {
+		_, err := versioning.ResourceVersion(testCase.Object)
+		if err == nil {
+			t.Errorf("%s: expected error, got nil", key)
+		}
+	}
+
+	setCases := map[string]struct {
+		runtime.Object
+		Expected string
+	}{
+		"pointer to api object with version": {&MyAPIObject{TypeMeta: runtime.TypeMeta{ResourceVersion: "1"}}, "1"},
+	}
+	for key, testCase := range setCases {
+		if err := versioning.SetResourceVersion(testCase.Object, "5"); err != nil {
+			t.Errorf("%s: unexpected error %#v", key, err)
+		}
+		actual, err := versioning.ResourceVersion(testCase.Object)
+		if err != nil {
+			t.Errorf("%s: unexpected error %#v", key, err)
+		}
+		if actual != "5" {
+			t.Errorf("%s: expected %v, got %v", key, "5", actual)
+		}
+	}
+}
+
+func TestTypeMetaSelfLinker(t *testing.T) {
+	table := map[string]struct {
+		obj     runtime.Object
+		expect  string
+		try     string
+		succeed bool
+	}{
+		"normal": {
+			obj:     &MyAPIObject{TypeMeta: runtime.TypeMeta{SelfLink: "foobar"}},
+			expect:  "foobar",
+			try:     "newbar",
+			succeed: true,
+		},
+		"fail": {
+			obj:     &MyIncorrectlyMarkedAsAPIObject{},
+			succeed: false,
+		},
+	}
+
+	linker := NewTypeMetaSelfLinker()
+	for name, item := range table {
+		got, err := linker.SelfLink(item.obj)
+		if e, a := item.succeed, err == nil; e != a {
+			t.Errorf("%v: expected %v, got %v", name, e, a)
+		}
+		if e, a := item.expect, got; item.succeed && e != a {
+			t.Errorf("%v: expected %v, got %v", name, e, a)
+		}
+
+		err = linker.SetSelfLink(item.obj, item.try)
+		if e, a := item.succeed, err == nil; e != a {
+			t.Errorf("%v: expected %v, got %v", name, e, a)
+		}
+		if item.succeed {
+			got, err := linker.SelfLink(item.obj)
+			if err != nil {
+				t.Errorf("%v: expected no err, got %v", name, err)
+			}
+			if e, a := item.try, got; e != a {
+				t.Errorf("%v: expected %v, got %v", name, e, a)
+			}
+		}
+	}
+}