Add APIObject for generic inclusion of API objects.

Includes test and json/yaml getters and setters.

pkg/api/apiobj_test.go

@@ -0,0 +1,72 @@
+/*
+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 api
+
+import (
+	"encoding/json"
+	"reflect"
+	"testing"
+)
+
+func TestAPIObject(t *testing.T) {
+	type EmbeddedTest struct {
+		JSONBase    `yaml:",inline" json:",inline"`
+		Object      APIObject `yaml:"object,omitempty" json:"object,omitempty"`
+		EmptyObject APIObject `yaml:"emptyObject,omitempty" json:"emptyObject,omitempty"`
+	}
+
+	AddKnownTypes(EmbeddedTest{})
+
+	outer := &EmbeddedTest{
+		JSONBase: JSONBase{ID: "outer"},
+		Object: APIObject{
+			&EmbeddedTest{
+				JSONBase: JSONBase{ID: "inner"},
+			},
+		},
+	}
+
+	wire, err := Encode(outer)
+	if err != nil {
+		t.Fatalf("Unexpected encode error '%v'", err)
+	}
+
+	t.Logf("Wire format is:\n%v\n", string(wire))
+
+	decoded, err := Decode(wire)
+	if err != nil {
+		t.Fatalf("Unexpected decode error %v", err)
+	}
+
+	if e, a := outer, decoded; !reflect.DeepEqual(e, a) {
+		t.Errorf("Expected: %#v but got %#v", e, a)
+	}
+
+	// test JSON decoding, too, since api.Decode uses yaml unmarshalling.
+	var decodedViaJSON EmbeddedTest
+	err = json.Unmarshal(wire, &decodedViaJSON)
+	if err != nil {
+		t.Fatalf("Unexpected decode error %v", err)
+	}
+
+	// Things that Decode would have done for us:
+	decodedViaJSON.Kind = ""
+
+	if e, a := outer, &decodedViaJSON; !reflect.DeepEqual(e, a) {
+		t.Errorf("Expected: %#v but got %#v", e, a)
+	}
+}