Writing a basic Feature Test with PhpUnit in Laravel

Create Event controller, migration, model and seed some datas.

php artisan make:test EventTest

Browse to tests/Feature/EventTest.php

We are going to check if Event::all is returning properly with a JSON structure:

<?php

namespace Tests\Feature;

use Illuminate\Foundation\Testing\RefreshDatabase;
use Illuminate\Foundation\Testing\WithFaker;
use Tests\TestCase;
use App\Models\Event;

class EventTest extends TestCase
{
    /**
     * A basic feature test example.
     */
    public function test_example(): void
    {
        $response = $this->get('/');

        $response->assertStatus(200);
    }

    public function test_for_get_all_events()
    {
        $events = Event::all();
        $resposne = $this->get('/view')->assertStatus(200)->assertJsonStructure(
            [
                'code',
                'message',
                'data' =>
                [
                    [
                    'id',
                    'name',
                    'country',
                    'random_no',
                    'created_at',
                    'updated_at'
                    ],
                ],
            ]
        );
    }
}

Function which is being tested:

public function view(): String
    {
        $a = Event::all();


        return json_encode([
            'code' => 200,
            'message' => 'Successful',
            'data' =>$a
        ]);
    }

To run tests exec: php artisan test

The function's Json structure matches with the Test's JSON structure hence the test passes