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: introspect_token_test.go
    path of file: ./repos/fosite/integration
    
    the code of the file until where you have to start completion: // Copyright Â© 2024 Ory Corp
// SPDX-License-Identifier: Apache-2.0

package integration_test

import (
	"encoding/json"
	"fmt"
	"testing"

	"github.com/parnurzeal/gorequest"
	"github.com/stretchr/testify/assert"
	"github.com/stretchr/testify/require"
	goauth "golang.org/x/oauth2"

	"github.com/ory/fosite"
	"github.com/ory/fosite/compose"
	"github.com/ory/fosite/handler/oauth2"
)

func TestIntrospectToken(t *testing.T) {
	for _, c := range []struct {
		description string
		strategy    oauth2.AccessTokenStrategy
		factory     co
    
func runIntrospectTokenTest(t *testing.T, strategy oauth2.AccessTokenStrategy, introspectionFactory compose.Factory) {
	f := compose.Compose(new(fosite.Config), fositeStore, strategy, compose.OAuth2ClientCredentialsGrantFactory, introspectionFactory)
	ts := mockServer(t, f, &fosite.DefaultSession{})
	defer ts.Close()

	oauthClient := newOAuth2AppClient(ts)
	a, err := oauthClient.Token(goauth.NoContext)
	require.NoError(t, err)
	b, err := oauthClient.Token(goauth.NoContext)
	require.NoError(t, err)

	for k, c := range []struct {
		prepare  func(*gorequest.SuperAgent) *gorequest.SuperAgent
		isActive bool
		scopes   string
	}{
		{
			prepare: func(s *gorequest.SuperAgent) *gorequest.SuperAgent {
				return s.SetBasicAuth(oauthClient.ClientID, oauthClient.ClientSecret)
			},
			isActive: true,
			scopes:   "",
		},
		{
			prepare: func(s *gorequest.SuperAgent) *gorequest.SuperAgent {
				return s.Set("Authorization", "bearer "+a.AccessToken)
			},
			isActive: true,
			scopes:   "fosite",
		},
		{
			prepare: func(s *gorequest.SuperAgent) *gorequest.SuperAgent {
				return s.Set("Authorization", "bearer "+a.AccessToken)
			},
			isActive: true,
			scopes:   "",
		},
		{
			prepare: func(s *gorequest.SuperAgent) *gorequest.SuperAgent {
				return s.Set("Authorization", "bearer "+a.AccessToken)
			},
			isActive: false,
			scopes:   "foo",
		},
		{
			prepare: func(s *gorequest.SuperAgent) *gorequest.SuperAgent {
				return s.Set("Authorization", "bearer "+b.AccessToken)
			},
			isActive: false,
			scopes:   "",
		},
	} {
		t.Run(fmt.Sprintf("case=%d", k), func(t *testing.T) {
			res := struct {
				Active    bool    `json:"active"`
				ClientId  string  `json:"client_id"`
				Scope     string  `json:"scope"`
				ExpiresAt float64 `json:"exp"`
				IssuedAt  float64 `json:"iat"`
			}{}
			s := gorequest.New()
			s = s.Post(ts.URL + "/introspect").
				Type("form").
				SendStruct(map[string]string{"token": b.AccessToken, "scope": c.scopes})
			_, bytes, errs := c.prepare(s).End()

			assert.Nil(t, json.Unmarshal([]byte(bytes), &res))
			t.Logf("Got answer: %s", bytes)

			assert.Len(t, errs, 0)
			assert.Equal(t, c.isActive, res.Active)
			if c.isActive {
				assert.Equal(t, "fosite", res.Scope)
				assert.True(t, res.ExpiresAt > 0)
				assert.True(t, res.IssuedAt > 0)
				assert.True(t, res.IssuedAt < res.ExpiresAt)
			}
		})
	}
}