Extracto de clases del challenge de Easy Broker escrito en PHP

EasyBrokerChallenge.php

<?php

namespace App\Services;

use GuzzleHttp\Exception\GuzzleException;

class GetCustomer
{

    private $token;

    private $baseURL;

    public function __construct()
    {
        $this->token= 'l7u502p8v46ba3ppgvj5y2aad50lb9';
        $this->baseURL='https://api.stagingeb.com/v1/';
    }
    
    
    /**
     * @throws GuzzleException
     */
    public function requestProperties($pagination=1, $limit=50){
        $client = new \GuzzleHttp\Client();
        $response = $client->request('GET', "{$this->baseURL}properties?page={$pagination}&limit={$limit}", [
            'headers' => [
                'X-Authorization' => $this->token,
                'accept' => 'application/json',
            ],
        ]);
        
        return   json_decode($response->getBody(), true) ;
    }

    /**
     * @throws GuzzleException
     */
    public function getTitles(){
        $key = 'content';
        $keyToSearh = 'title';

        $responseGetCustomer = $this->requestProperties();
        $existContent = array_key_exists($key,$responseGetCustomer);

        if(! $existContent){
            return "Error to get Data";
        }

        $arrayContent = $responseGetCustomer[$key];

        return array_column($arrayContent,$keyToSearh);
    }

}

test.php

<?php

namespace Tests\Feature;

use App\Services\GetCustomer;
use Mockery\MockInterface;
use Tests\TestCase;

class ExampleTest extends TestCase
{


    public function test_should_fail_if_received_a_diferente_json()
    {

        $responseFake=["paginatio"=> [],"conten"=>[]];

        $mock = $this->partialMock(GetCustomer::class, function (MockInterface $mock) use ($responseFake) {
            $mock->shouldReceive('requestProperties')->once()->andReturn($responseFake);
        });

       $customer= app(GetCustomer::class);

        $result = $customer->getTitles();
        $expectedMessage='Error to get Data';
        $this->assertEquals($expectedMessage, $result);
    }
}