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: impersonation_test.go
    path of file: ./repos/grafana/pkg/services/apiserver/auth/authorizer
    
    the code of the file until where you have to start completion: package authorizer

import (
	"context"
	"testing"

	"github.com/stretchr/testify/require"
	"k8s.io/apiserver/pkg/authorization/authorizer"
)

func TestImpersonationAuthorizer_Authorize(t *testing.T) {
	auth := impersonationAuthorizer{}

	t.Run("impersonate verb", func(t *testing.T) {
		attrs := &fakeAttributes{
			verb: "impersonate",
		}

		authorized, reason, err := auth.Authorize(context.Background(), attrs)

		require.Equal(t, authorizer.DecisionDeny, authorized)
		require.Equal(t, "user impersonation is no
    
func TestImpersonationAuthorizer_Authorize(t *testing.T) {
	auth := impersonationAuthorizer{}

	t.Run("impersonate verb", func(t *testing.T) {
		attrs := &fakeAttributes{
			verb: "impersonate",
		}

		authorized, reason, err := auth.Authorize(context.Background(), attrs)

		require.Equal(t, authorizer.DecisionDeny, authorized)
		require.Equal(t, "user impersonation is not supported", reason)
		require.NoError(t, err)
	})

	t.Run("other verb", func(t *testing.T) {
		attrs := &fakeAttributes{
			verb: "get",
		}

		authorized, reason, err := auth.Authorize(context.Background(), attrs)

		require.Equal(t, authorizer.DecisionNoOpinion, authorized)
		require.Equal(t, "", reason)
		require.NoError(t, err)
	})
}