Test Case Model Factory Utility Function with Signin Example

2.TestCase.php

<?php
abstract class TestCase extends BaseTestCase
{
    use CreatesApplication;

    protected function setUp()
    {
        parent::setUp();

        $this->disableExceptionHandling();
    }

    protected function signIn($user = null)
    {
        $user = $user ?: create('App\User');

        $this->actingAs($user);

        return $this;
    }
}

functions.php

<?php

function create($class, $attributes = [], $times = null)
{
    return factory($class, $times)->create($attributes);
}

function make($class, $attributes = [], $times = null)
{
    return factory($class, $times)->make($attributes);
}

Then autoload functions.php like below.
"autoload-dev": {
"psr-4": {
"Tests\": "tests/"
},
"files": ["tests/utilities/functions.php"]
},