[Bug]: Datasets with only one named parameter result in tests failing

[parapente]

What Happened

Following the pest docs about named parameters in datasets, I had setup some tests with a dataset that uses an associative array with only one key. The tests were running correctly in pest version 2, 3 and 4 but are now failing to run after upgrading to pest 5. It seems that pest handles arrays with a count of 1 as an indexed array and then this line https://github.com/sonalidudhia/pest/blob/974546d49f3813456826ee6e58bc611812f9b52d/src/Factories/TestCaseMethodFactory.php#L238 tries to read array index 0 and fails.

How to Reproduce

You can try to following simple example:

it('has user data', function (array $data) {
    expect($data['name'])->toBeString();
    expect($data['email'])->toContain('@');
})->with([
    ['data' => ['name' => 'Taylor', 'email' => 'taylor@laravel.com']],
    ['data' => ['name' => 'Nuno', 'email' => 'enunomaduro@gmail.com']],
]);

Execution:

php artisan test tests/Feature/MiniTest.php                                                                                                  776ms

   FAIL  Tests\Feature\MiniTest
  ⨯ it has user data with (['Taylor', 'taylor@laravel.com'])                                                                           0.10s  
  ⨯ it has user data with (['Nuno', 'enunomaduro@gmail.com'])                                                                          0.03s  
  ──────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────  
   FAILED  Tests\Feature\MiniTest > it has user data with (['Taylor', 'taylor@laravel.com'])                                 ErrorException   
  Undefined array key 0

  ──────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────  
   FAILED  Tests\Feature\MiniTest > it has user data with (['Nuno', 'enunomaduro@gmail.com'])                                ErrorException   
  Undefined array key 0


  Tests:    2 failed (0 assertions)
  Duration: 0.19s

Sample Repository

No response

Pest Version

5.1.1

PHP Version

8.4.20

Operation System

Linux

Notes

No response