You are an expert in writing code in many different languages. Your goal is to perform code completion for the following code, keeping in mind the rest of the code and the file meta data.
    Metadata details:
    filename: emf_test.go
    path of file: ./repos/aws-sdk-go-v2/aws/middleware/private/metrics/emf
    
    the code of the file until where you have to start completion: // This package is designated as private and is intended for use only by the
// smithy client runtime. The exported API therein is not considered stable and
// is subject to breaking changes without notice.

package emf

import (
	"fmt"
	"reflect"
	"testing
    
func TestCreateNewEntry(t *testing.T) {

	sdk.NowTime = func() time.Time {
		return time.Unix(1234, 0)
	}

	cases := map[string]struct {
		Namespace     string
		ExpectedEntry Entry
	}{
		"success": {
			Namespace: "testNamespace",
			ExpectedEntry: Entry{
				namespace:  "testNamespace",
				serializer: metrics.DefaultSerializer{},
				metrics:    []metric{},
				dimensions: [][]string{{}},
				fields:     map[string]interface{}{},
			},
		},
	}

	for name, c := range cases {
		t.Run(name, func(t *testing.T) {
			actualEntry := NewEntry(c.Namespace, metrics.DefaultSerializer{})
			if !reflect.DeepEqual(actualEntry, c.ExpectedEntry) {
				t.Errorf("Entry contained unexpected values")
			}
		})
	}
}