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: providers_mirror_test.go
    path of file: ./repos/terraform/internal/command/e2etest
    
    the code of the file until where you have to start completion: // Copyright (c) HashiCorp, Inc.
// SPDX-License-Identifier: BUSL-1.1

package e2etest

import (
	"os"
	"path/filepath"
	"sort"
	"testing"

	"github.com/google/go-cmp/cmp"
	"github.com/hashicorp/terraform/internal/e2e"
)

// The tests in this file ar
    
func testTerraformProvidersMirror(t *testing.T, fixture string) {
	// This test reaches out to releases.hashicorp.com to download the
	// template and null providers, so it can only run if network access is
	// allowed.
	skipIfCannotAccessNetwork(t)

	outputDir := t.TempDir()
	t.Logf("creating mirror directory in %s", outputDir)

	fixturePath := filepath.Join("testdata", fixture)
	tf := e2e.NewBinary(t, terraformBin, fixturePath)

	stdout, stderr, err := tf.Run("providers", "mirror", "-platform=linux_amd64", "-platform=windows_386", outputDir)
	if err != nil {
		t.Fatalf("unexpected error: %s\nstdout:\n%s\nstderr:\n%s", err, stdout, stderr)
	}

	// The test fixture includes exact version constraints for the two
	// providers it depends on so that the following should remain stable.
	// In the (unlikely) event that these particular versions of these
	// providers are removed from the registry, this test will start to fail.
	want := []string{
		"registry.terraform.io/hashicorp/null/2.1.0.json",
		"registry.terraform.io/hashicorp/null/index.json",
		"registry.terraform.io/hashicorp/null/terraform-provider-null_2.1.0_linux_amd64.zip",
		"registry.terraform.io/hashicorp/null/terraform-provider-null_2.1.0_windows_386.zip",
		"registry.terraform.io/hashicorp/template/2.1.1.json",
		"registry.terraform.io/hashicorp/template/index.json",
		"registry.terraform.io/hashicorp/template/terraform-provider-template_2.1.1_linux_amd64.zip",
		"registry.terraform.io/hashicorp/template/terraform-provider-template_2.1.1_windows_386.zip",
	}
	var got []string
	walkErr := filepath.Walk(outputDir, func(path string, info os.FileInfo, err error) error {
		if err != nil {
			return err
		}
		if info.IsDir() {
			return nil // we only care about leaf files for this test
		}
		relPath, err := filepath.Rel(outputDir, path)
		if err != nil {
			return err
		}
		got = append(got, filepath.ToSlash(relPath))
		return nil
	})
	if walkErr != nil {
		t.Fatal(walkErr)
	}
	sort.Strings(got)

	if diff := cmp.Diff(want, got); diff != "" {
		t.Errorf("unexpected files in result\n%s", diff)
	}
}