milroyfraser/pest-plugin-gwt

Given When Then (GWT) Plugin for Pest

A simple API allows you to structure your tests focused on the behaviour. Given-When-Then separation makes the test easier to understand at a glance.

Install

composer require milroyfraser/pest-plugin-gwt --dev

Usage

use App\Exceptions\BlockedUserException;
use App\Models\User;
use function Pest\Gwt\scenario;
use function Pest\Laravel\assertDatabaseHas;

scenario('activate user')
    ->given(fn() => User::factory()->create())
    ->when(fn(User $user) => $user->activate())
    ->then(fn(User $user) => assertDatabaseHas('users', [
        'id' => $user->id,
        'activated' => true,
    ]));

scenario('activate blocked user')
    ->given(fn() => User::factory()->blocked()->create())
    ->when(fn(User $user) => $user->activate())
    ->throws(BlockedUserException::class);

more examples

Given a state

Given method accepts a Closure. This is where we Arrange application state. The return values will become argument/s of the when closure.

When I do something

When method accepts a Closure. This is where we Act (perform) the operation. The return values will become argument/s of the then closure.

Then I expect an outcome

Then method accepts a Closure. This is where we Assert the outcome.

If you want to start testing your application with Pest, visit the main Pest Repository.

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Pest was created by Nuno Maduro under the Sponsorware license. It got open-sourced and is now licensed under the MIT license.