AsyncTestCase example with amphp

aysnc-test-example.php

<?php

// We assume that your PHPUnit bootstrap will include the appropriate class loader and setup your environment

use Amp\Delayed;
use Amp\Promise;
use Amp\PHPUnit\AsyncTestCase;

use function Amp\call;

class AsyncTestSubject {
    
    public function doSomething() : Promise {
        return call(function() {
            yield new Delayed(250); // emulate a network call
            yield new Delayed(100); // emulate a call to a file system
            return 'We did it!';
        });
    }
  
  
}

class AsyncTestExample extends AsyncTestCase {

    public function testThatWeCanDoIt() {
        $subject = new AsyncTestSubject();
        $response = yield $subject->doSomething();
        $this->assertSame('We did it!', $response);
    }
    
}