https://github.com/webmozarts/strict-phpunit
Enables type-safe comparisons of objects in PHPUnit.
https://github.com/webmozarts/strict-phpunit
phpunit strict-types
Last synced: about 2 months ago
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Enables type-safe comparisons of objects in PHPUnit.
- Host: GitHub
- URL: https://github.com/webmozarts/strict-phpunit
- Owner: webmozarts
- License: mit
- Created: 2021-04-07T16:25:51.000Z (about 4 years ago)
- Default Branch: main
- Last Pushed: 2025-03-25T10:38:17.000Z (2 months ago)
- Last Synced: 2025-04-05T20:49:15.384Z (about 2 months ago)
- Topics: phpunit, strict-types
- Language: PHP
- Homepage:
- Size: 138 KB
- Stars: 29
- Watchers: 5
- Forks: 1
- Open Issues: 0
-
Metadata Files:
- Readme: README.md
- Changelog: CHANGELOG.md
- License: LICENSE
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README
# Strict PHPUnit
Enables type-safe comparisons of objects in PHPUnit.
## Problem
PHPUnit has a very powerful comparison system that helps you comparing objects
with expected values:
```php
class ValueObject
{
public ?string $property;
public function __construct(?string $property)
{
$this->property = $property;
}
}
$actual = new ValueObject('foo!');
self::assertEquals(new ValueObject('foo'), $actual);
// => fails with a very helpful error message
```
This comparison system will give you a meaningful exception that guides you
precisely to the problem that caused the assertion to fail. Strings are
furthermore diffed so that you see exactly which character of the string
causes a mismatch.
PHPUnit compares each scalar property of an object with relaxed types. It is a
little more intelligent than using just `==` under the hood, but still that
will not always provide the results you want:
```php
var_dump('Hi' == true);
// => true
self::assertEquals(new ValueObject('Hi'), new ValueObject(true));
// => fails
var_dump('' == null);
// => true
self::assertEquals(new ValueObject(''), new ValueObject(null));
// => succeeds
```
## Solution
This extension enables a comparator for scalar values that fights this problem.
With this extension, whenever PHPUnit finds a scalar value during
`assertEquals()` (even recursively within objects or arrays), it will compare
the value with `===`.
Objects are still not checked for identity, hence you can still construct
example objects to compare against.
Error messages stay meaningful.
```php
self::assertEquals(new ValueObject(''), new ValueObject(null));
// => fails with a meaningful error
self::assertEquals(new ValueObject('foo!'), new ValueObject('foo'));
// => fails with a meaningful error
self::assertEquals(new ValueObject('foo!'), new ValueObject('foo!'));
// => succeeds
```
## Installation
The extension can be installed with Composer:
```bash
$ composer require --dev webmozarts/strict-phpunit
```
Add the extension to your `phpunit.xml.dist` file to enable it:
```xml
```
## Authors
* [Bernhard Schussek]
* [The Community Contributors]
## Contribute
Contributions to the package are always welcome!
* Report any bugs or issues you find on the [issue tracker].
* You can grab the source code at the package's [Git repository].
Note that this repository is a subtree-split of a monorepo and hence read only.
PRs will be ported to the (internal) monorepo.
License
-------
All contents of this package are licensed under the [MIT license].
[Composer]: https://getcomposer.org
[Bernhard Schussek]: http://webmozarts.com
[The Community Contributors]: https://github.com/webmozarts/strict-phpunit/graphs/contributors
[issue tracker]: https://github.com/webmozarts/strict-phpunit/issues
[Git repository]: https://github.com/webmozarts/strict-phpunit
[MIT license]: LICENSE