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Example code of patchlevel/event-sourcing-phpunit

Informations about the package event-sourcing-phpunit

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Testing utilities

With this library you can ease the testing for your event-sourcing project when using PHPUnit. It comes with utilities for aggregates and subscribers.

Installation

Testing Aggregates

There is a special TestCase for aggregate tests which you can extend from. Extending from AggregateRootTestCase enables you to use the given / when / then notation. This makes it very clear what the test is doing. When extending the class you will need to implement a method which provides the FQCN of the aggregate you want to test.

When this is done, you already can start testing your behaviour. For example testing that a event is recorded.

You can also provide multiple given events and expect multiple events:

You can also test the creation of the aggregate:

And expect an exception and the message of it:

Using Commandbus like syntax

When using the command bus and the #[Handle] attributes in your aggregate you can also provide the command directly for the when method.

If more parameters than the command is needed, these can also be provided as additional parameters for when. In this example the we need a string which will be directly passed to the event.

Testing Subscriber

For testing a subscriber there is a utility class which you can use. Using SubscriberUtilities will provide you a bunch of dx features which makes the testing easier. First, you will need to provide the utility class the subscriptions you will want to test, this is done when initialiszing the class. After that, you can call these 3 methods: executeSetup, executeRun and executeTeardown. These methods will be calling the right methods which are defined via the attributes. For our example we are taking as simplified subscriber:

With this, we can now write our test for it:

This Util class can be used for integration or unit tests.

All versions of event-sourcing-phpunit with dependencies

PHP Build Version
Package Version
Requires php Version ~8.2.0 || ~8.3.0 || ~8.4.0
patchlevel/event-sourcing Version ^3.10.0
phpunit/phpunit Version ^10.5.45 || ^11.0.0 || ^12.0.0
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