Nsa Laravel Package

Getting Started

nyholm/nsa is a lightweight testing utility focused on simplifying test code by providing quick, no-boilerplate access to PHP's internal state—particularly reflection, closures, and private/protected members—without relying on reflection manually. To start:

• Require it via composer require --dev nyholm/nsa
• In your tests, use the Nsa class directly: use Nsa\Nsa;
• First use case: accessing private properties on objects for assertions:

  $user = new User('Alice');
  $name = Nsa::getProperty($user, 'name'); // returns 'Alice' even if private
  $this->assertEquals('Alice', $name);
  

Implementation Patterns

• Property Access: Bypass visibility modifiers with Nsa::getProperty() and Nsa::setProperty()—ideal for testing internal state without changing it to public.
• Method Invocation: Call private/protected methods via Nsa::getMethod($object, 'methodName')->invoke($object, ...).
• Closure Creation: Use Nsa::getClosure($object, 'methodName') to get a reusable closure for repeated calls (e.g., in data providers).
• Namespace & Trait Helpers: When testing traits, Nsa::getNamespace() and Nsa::getTraits() help introspect classes dynamically.
• Integration: Commonly used in unit tests ( PHPUnit, Pest) where real behavior must be verified without refactoring production code. Often paired with test doubles to assert calls to internal methods.

Gotchas and Tips

• Performance: Avoid repeated calls to Nsa::getMethod() in loops—cache the method closure instead:

  $method = Nsa::getMethod($service, 'compute');  
  $result = $method->invoke($service, $input);
  

• PHP Version: Requires PHP 7.0+; uses ReflectionMethod, ReflectionProperty, and closures under the hood.
• Not for Production: Strictly a dev dependency—do not autoload in production. Ensure nyholm/nsa is listed under require-dev in composer.json.
• Limited Scope: Only handles objects and class methods/properties; not designed for static properties or global functions (use other tools like Roave\BetterReflection for advanced cases).
• Typical Bug: Forgetting to pass the object instance when invoking methods—e.g., $method->invoke(null) fails. Always use Nsa::getMethod($object, 'foo') → $method->invoke($object, ...).
• Extensibility: The package is tiny (~200 LoC)—consider extending it with your own helper like Nsa::invoke($obj, 'method', ...) to streamline common patterns.