Adds info message after service create and delete operations (#95)

* Adds info message after service create operation

 Fixes #87

 Aligns the service delete info message with service create too.

* Updates per review comments

 Adds newline after std imports
 Line breaks at proper operator

pkg/kn/commands/service_create.go

@@ -16,6 +16,7 @@ package commands
 
 import (
 	"errors"
+	"fmt"
 
 	serving_lib "github.com/knative/client/pkg/serving"
 	servingv1alpha1 "github.com/knative/serving/pkg/apis/serving/v1alpha1"
@@ -73,7 +74,7 @@ func NewServiceCreateCommand(p *KnParams) *cobra.Command {
 			if err != nil {
 				return err
 			}
-
+			fmt.Fprintf(cmd.OutOrStdout(), "Service '%s' successfully created in namespace '%s'.\n", args[0], namespace)
 			return nil
 		},
 	}

pkg/kn/commands/service_create_test.go

@@ -19,6 +19,7 @@ import (
 	"errors"
 	"fmt"
 	"reflect"
+	"strings"
 	"testing"
 
 	servinglib "github.com/knative/client/pkg/serving"
@@ -66,9 +67,8 @@ func fakeServiceCreate(args []string) (
 }
 
 func TestServiceCreateImage(t *testing.T) {
-	action, created, _, err := fakeServiceCreate([]string{
+	action, created, output, err := fakeServiceCreate([]string{
 		"service", "create", "foo", "--image", "gcr.io/foo/bar:baz"})
-
 	if err != nil {
 		t.Fatal(err)
 	} else if !action.Matches("create", "services") {
@@ -79,6 +79,9 @@ func TestServiceCreateImage(t *testing.T) {
 		t.Fatal(err)
 	} else if conf.RevisionTemplate.Spec.Container.Image != "gcr.io/foo/bar:baz" {
 		t.Fatalf("wrong image set: %v", conf.RevisionTemplate.Spec.Container.Image)
+	} else if !strings.Contains(output, "foo") || !strings.Contains(output, "created") ||
+		!strings.Contains(output, "default") {
+		t.Fatalf("wrong stdout message: %v", output)
 	}
 }
 

pkg/kn/commands/service_delete.go

@@ -53,7 +53,7 @@ func NewServiceDeleteCommand(p *KnParams) *cobra.Command {
 			if err != nil {
 				return err
 			}
-			fmt.Fprintf(cmd.OutOrStdout(), "Deleted %s in %s namespace.\n", args[0], namespace)
+			fmt.Fprintf(cmd.OutOrStdout(), "Service '%s' successfully deleted in namespace '%s'.\n", args[0], namespace)
 			return nil
 		},
 	}