How to test custom validation rule in Laravel 5.8 - laravel

Question

i would like to write a test for my custom rules.
my example looks like this.
I'm check if the user gives the correct current password.
my custom rule:
public function passes($attribute, $value)
{
return Hash::check($value, auth()->user()->password);
}
public function message()
{
return 'Your current password is incorrect.';
}
and the test for this rule:
class CurrentPasswordTest extends TestCase
{
use WithFaker, RefreshDatabase;
/** #test */
public function current_password_must_be_valid()
{
$rule = new CurrentPassword();
$user = factory(User::class)->create(['password' => '1234']);
$this->assertTrue($rule->passes('current_password','1234'), $user->password);
}
}
but i'm getting an error:
Tests\Unit\CurrentPasswordTest::current_password_must_be_valid
ErrorException: Trying to get property 'password' of non-object
what i'm doing wrong in this example ?

Answer 1

You need to log in your user before you can use your passes() method - otherwise auth()->user() will be null. You can do that using the be($user) method like this:
/** #test */
public function current_password_must_be_valid()
{
$rule = new CurrentPassword();
$user = factory(User::class)->create(['password' => '1234']);
$this->be($user);
$this->assertTrue($rule->passes('current_password','1234'), $user->password);
}
It would also be advisable to guard against null values in your passes() method to prevent errors. If there is no user logged in, it should probably just return false.