Add event client and easy creation library

pkg/client/record/event_test.go

@@ -0,0 +1,112 @@
+/*
+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 record_test
+
+import (
+	"fmt"
+	"reflect"
+	"testing"
+
+	"github.com/GoogleCloudPlatform/kubernetes/pkg/api"
+	"github.com/GoogleCloudPlatform/kubernetes/pkg/client/record"
+	"github.com/GoogleCloudPlatform/kubernetes/pkg/runtime"
+	"github.com/GoogleCloudPlatform/kubernetes/pkg/util"
+)
+
+type testEventRecorder struct {
+	OnEvent func(e *api.Event) (*api.Event, error)
+}
+
+// CreateEvent records the event for testing.
+func (t *testEventRecorder) CreateEvent(e *api.Event) (*api.Event, error) {
+	if t.OnEvent != nil {
+		return t.OnEvent(e)
+	}
+	return e, nil
+}
+
+func (t *testEventRecorder) clearOnEvent() {
+	t.OnEvent = nil
+}
+
+func TestEventf(t *testing.T) {
+	table := []struct {
+		obj                       runtime.Object
+		fieldPath, status, reason string
+		messageFmt                string
+		elements                  []interface{}
+		expect                    *api.Event
+		expectLog                 string
+	}{
+		{
+			obj: &api.Pod{
+				TypeMeta: api.TypeMeta{
+					SelfLink: "/api/v1beta1/pods/foo",
+					ID:       "foo",
+				},
+			},
+			fieldPath:  "desiredState.manifest.containers[2]",
+			status:     "running",
+			reason:     "started",
+			messageFmt: "some verbose message: %v",
+			elements:   []interface{}{1},
+			expect: &api.Event{
+				InvolvedObject: api.ObjectReference{
+					Kind:       "Pod",
+					Name:       "foo",
+					UID:        "foo",
+					APIVersion: "v1beta1",
+					FieldPath:  "desiredState.manifest.containers[2]",
+				},
+				Status:  "running",
+				Reason:  "started",
+				Message: "some verbose message: 1",
+				Source:  "eventTest",
+			},
+			expectLog: `Event(api.ObjectReference{Kind:"Pod", Namespace:"", Name:"foo", UID:"foo", APIVersion:"v1beta1", ResourceVersion:"", FieldPath:"desiredState.manifest.containers[2]"}): status: 'running', reason: 'started' some verbose message: 1`,
+		},
+	}
+
+	for _, item := range table {
+		called := make(chan struct{})
+		testEvents := testEventRecorder{
+			OnEvent: func(a *api.Event) (*api.Event, error) {
+				if e := item.expect; !reflect.DeepEqual(e, a) {
+					t.Errorf("diff: %s", util.ObjectDiff(e, a))
+				}
+				called <- struct{}{}
+				return a, nil
+			},
+		}
+		recorder := record.StartRecording(&testEvents, "eventTest")
+		logger := record.StartLogging(t.Logf) // Prove that it is useful
+		logger2 := record.StartLogging(func(formatter string, args ...interface{}) {
+			if e, a := item.expectLog, fmt.Sprintf(formatter, args...); e != a {
+				t.Errorf("Expected '%v', got '%v'", e, a)
+			}
+			called <- struct{}{}
+		})
+
+		record.Eventf(item.obj, item.fieldPath, item.status, item.reason, item.messageFmt, item.elements...)
+
+		<-called
+		<-called
+		recorder.Stop()
+		logger.Stop()
+		logger2.Stop()
+	}
+}