AsyncUnit

A testing framework, with a focus on integration testing, that treats Amp's Loop as a first-class citizen!

• Extend Cspray\Labrador\AsyncUnit\TestCase and annotate your tests with #[Test] to get started
• Setup and teardown your tests using a variety of hooks by annotating methods with attributes like #[BeforeEach] and #[AfterEach]
• Embrace a test suite as a first-class citizen with Cspray\Labrador\AsyncUnit\TestSuite and bring a layer of extra functionality to integration tests
• Assertion API with first-class async support and a clear
• Disable tests, TestCase, or a TestSuite with the #[Disabled] Attribute
• Utilize #[DataProvider] to reduce test duplication
• Expect exceptions with, or without, specific messages to be thrown by your tests
• Includes a bundled CLI application for running your tests

AsyncUnit is under active development! The project has a defined Roadmap and is currently implementing features for version 0.5.0.

Installation

composer require --dev cspray/labrador-async-unit

Hello, AsyncUnit

Although AsyncUnit can satisfy the needs of most unit and integration tests it was really designed for a specific type of test which can be challenging to run properly even in synchronous contexts. The "canonical" AsyncUnit test example is below and demonstrates the core functionality of the framework.

<?php

namespace Acme\MyApp;

use Cspray\Labrador\AsyncUnit\Attribute\AfterAll;
use Cspray\Labrador\AsyncUnit\Attribute\BeforeAll;
use Cspray\Labrador\AsyncUnit\Attribute\BeforeEachTest;
use Cspray\Labrador\AsyncUnit\Attribute\AfterEachTest;
use Cspray\Labrador\AsyncUnit\Attribute\BeforeEach;
use Cspray\Labrador\AsyncUnit\Attribute\Test;
use Cspray\Labrador\AsyncUnit\Attribute\AttachToTestSuite as UseTestSuite;
use Cspray\Labrador\AsyncUnit\TestCase;
use Cspray\Labrador\AsyncUnit\TestSuite;
use Amp\Success;
use Amp\Delayed;
use function Amp\Postgres\pool;

class DatabaseTestSuite extends TestSuite {

    #[BeforeAll]
    public function connectToDatabase() {
        // In test situations we want to make sure we're dealing with the same connection so we can properly clean up data
        $pool = pool(connectionConfig(), maxConnections: 1, resetConnections: false);
        $this->set('pool', $pool);
    }
    
    #[BeforeEachTest]
    public function startTransaction() {
        yield $this->get('pool')->query('START TRANSACTION');
    }
    
    #[AfterEachTest]
    public function rollback() {
        yield $this->get('pool')->query('ROLLBACK');
    }
    
    #[AfterAll]
    public function closeDatabase() {
        $this->get('pool')->close();
    }
    
}

// The name of this class doesn't matter... you only need to ensure you extend TestCase
#[UseTestSuite(DatabaseTestSuite::class)]
class MyDatabaseTestCase extends TestCase {

    // Again, none of the method names matter... just make sure you're annotating with the correct Attribute
    #[BeforeEach]
    public function loadFixture() {
        yield someMethodThatLoadsData($this->testSuite()->get('pool'));
    }
    
    #[Test]
    public function ensureSomethingHappens() {
        yield new Delayed(100); // just to show you we're on the loop
        // These values could be retrieved from the database
        $this->assert()->stringEquals('foo', 'foo');
    }
    
    #[Test]
    public function ensureSomethingAsyncHappens() {
        yield new Delayed(100);
        yield $this->asyncAssert()->stringEquals('foo', new Success('foo'));
    }
    
    #[Test]
    public function makeSureYouAssertSomething() {
        // a failed test because you didn't assert anything!
    }
    
}
    
class MyNormalTestCase extends TestCase {
    
    #[Test]
    public function ensurePoolNotAvailable() {
        $this->assert()->isNull($this->testSuite()->get('pool'));
    }
    
}

I hope you were able to see as much neatness in the above testing example as I do! If you're interested in seeing more examples there are two places to find them; the examples/ and acme_src/ directories. Otherwise, please check out the rest of this README for how to get started with the project.

Documentation

Whether you're a user learning how to write tests with the framework or you're a contributor wanting to make the library better our documentation should have what you're looking for! We walk you through everything you need to do get started, teach you about all the important concepts to know, and list out the assertions available. For contributors we give you a thorough overview of how everything works.

Online documentation at https://docs.labrador-kennel.io/asyncunit.

Documentation for Labrador AsyncUnit is sponsored by GitBook. Should absolutely check them out if you have the ned for developer-friendly, managed documentation hosting!

Discussion

Have an idea for the framework? Wondering how something works and have a question? Wanna interact with the maintainers? You're in the right place! This is the "social" part of AsyncUnit... go add to the Discussion!

Roadmap

AsyncUnit has a fairly well-defined roadmap leading to a stable API and a 1.0 release. Our Roadmap is not dated because the framework is currently maintained and implemented by 1 person in their free time. Instead, we have a series of 0.x releases with functionality that should enable increasingly complex tests until our canonical example can be executed. Check out the Roadmap to see what's in store for AsyncUnit! The features we're currently working on implemented can be tracked in our Active Sprint.