Handy filesystem helpers for your Pest tests

Testing with Pest is an absolute pleasure, but sometimes you just need that little bit extra. In my case, that extra was a set of expectations and functions to interact with the filesystem and make assertions on it. Below I made a list with all the helpers currently available. Enjoy!

Expectations
Higher-order expectations
1. expect(...)->contents->toBe(...)
Functions

Expectations

expect(...)->toHaveContents()

Test whether a file has certain contents:

file_put_contents(__DIR__ . '/tmp/fileA.php', 'I\'m a test file!');
file_put_contents(__DIR__ . '/tmp/fileB.php', 'I\'m a second test file!');

expect(__DIR__ . '/tmp/fileA.php')->toHaveContents('I\'m a test file!');
expect(__DIR__ . '/tmp/fileB.php')->not->toHaveContents('I\'m a test file!');

expect(...)->toExist()

Test whether a file exists:

expect(__DIR__ . '/tmp/fileA.php')->toExist();

expect(...)->toHaveNamespace()

Test whether a file has a certain namespace (PHP-only):

expect(__DIR__ . '/tmp/fileA.php')->toHaveNamespace('App\Models');

Higher-order expectations

expect(...)->contents->toBe(...)

Make assertions on the contents of a file:

file_put_contents(__DIR__ . '/tmp/fileA.php', 'I\'m a test file!');

expect(__DIR__ . '/tmp/fileA.php')
    ->contents->toBe('I\'m a test file!')
    ->toContain('test file')
    ->not->toContain('Hello world');

Functions

rm($path, $allowNonExisting)

Completely remove a file or directory:

use function RalphJSmit\PestPluginFilesystem\rm;

rm(__DIR__ . '/tmp'); // Make sure that this file or directory doesn't exist

file_put_contents(__DIR__ . '/tmp/fileA.php', 'I\'m a test file!');
file_put_contents(__DIR__ . '/tmp/fileB.php', 'I\'m a second test file!');

// Other code

rmdir_recursive($dir)

This function recursively deletes a folder, including its contents. Internally this is used by the rm() function:

use function RalphJSmit\PestPluginFilesystem\rmdir_recursive;

rmdir_recursive(__DIR__ . '/tmp'); // Recursively remove this directory

contents($path)

Gets the file contents of a certain file. Its simply a shorter wrapper for file_get_contents():

use function RalphJSmit\PestPluginFilesystem\contents;

expect(
    contents(__DIR__ . '/tmp/fileA.php')
)->toBe(
    contents(__DIR__ . '/tmp/fileB.php')
);

expectFailedAssertion()

Note that this helper will be added to another package soon and thus be removed here.

Expect a failed assertion. Helpful for testing your own custom Pest assertions:

use function RalphJSmit\PestPluginFilesystem\expectFailedAssertion;

expectFailedAssertion();
expect(true)->toBe(false);

// This test will pass

// Somewhere
expect()->extend('toBeHello', function () {
    return $this->toBe('Hello there');
});

// In your test
use function RalphJSmit\PestPluginFilesystem\expectFailedAssertion;

expect('Hello there')->toBeHello(); // This will pass

expectFailedAssertion();
expect('Bye')->toBeHello(); // This will pass

expectFailedAssertion();
expect('Hello there')->toBeHello(); // This will fail

General

🐞 If you spot a bug, please submit a detailed issue and I'll try to fix it as soon as possible.

🔐 If you discover a vulnerability, please review our security policy.

🙌 If you want to contribute, please submit a pull request. All PRs will be fully credited. If you're unsure whether I'd accept your idea, feel free to contact me!

🙋‍♂️ Ralph J. Smit

ralphjsmit/pest-plugin-filesystem

ralphjsmit

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