Laravel Dusk Tests running very slow - laravel

Question

Even when running a single simple test like the following:
public function test_simple()
{
$user = factory(User::class)->create();
$this->browse(function ($browser) use($user){
$browser->visit('/login')
->type('email', $user->email)
->type('password', 'secret')
->press('Login')
->assertPathIs('/home');
});
}
Laravel Dusk runs very slow with speed of 14-16 seconds for this test alone.
How can I speed it up ? Because if I will be running like 100 tests it would take extremely long.
Any Solutions ?

Answer 1

For me the thing that was taking lots of time was running migrations before each test and migrate:rollback after each test done by DatabaseMigrations trait. Here is how I solved it on my project:
Remove usage of DatabaseMigrations trait from you test cases.
Before starting tests call ./artisan migrate:fresh --seed --env=dusk. I do it in bash file that I call to run tests.
In your base DuskTestCase class in setUp method call a command to delete all data in your tables. Here is what I do for MySQL (inside Artisan command):
$command = 'mysql -u test_database -Nse "show tables" test_database | while read table; do mysql -u test_database -e "SET FOREIGN_KEY_CHECKS = 0; delete from $table" test_database; done;';
$result = exec($command);
After above command run $this->artisan('db:seed');
Now tests running much faster.

Answer 2

Solving your issue might depend on many things (your dev environment setup, your database or some other issues).
In my case it was migrations that were taking much time for every test. When you are using Laravel Dusk you are using DatabaseMigrations trait that is running migrations over and over so if you can improve this part it might be you a big gain. You talked about 100 tests. So assuming applying your migrations takes 10 seconds and you could decrease to 4 seconds, in total you would gain 600 seconds.
You can read more about it how I made my Laravel Dusk tests 3 times faster than they were initially - https://laradevtips.com/2018/07/23/make-laravel-dusk-tests-3-times-faster/ - I don't know if it will solve the issue in your case but in my case (tested today) the gain is really impressive.