Laravel特性测试-插入数据

我有一个元数据表，需要测试插入数据：

public function test_insert_unique_data()
{
    $response = Metadata::create([
        'metable_id' => '1',
        'metable_type' => File::class,
        'type' => 'resolution',
        'key' => 'width',
        'value' => 1000,
    ]);
    $response->assertCreated();
}

这是表的迁移：文章源自玩技e族-https://www.playezu.com/180051.html

Schema::create(..., function (Blueprint $table) {
    $table->id();
    $table->bigInteger('metable_id')->unsigned()->index();
    $table->string('metable_type')->index();
    $table->string('type')->default('default');
    $table->string('key')->index();
    $table->text('value');
    $table->timestamps();

每次都会失败，所以我只能假设测试写错了。有什么指示吗？文章源自玩技e族-https://www.playezu.com/180051.html 文章源自玩技e族-https://www.playezu.com/180051.html