Erimax

postgres:
    image: postgres
    restart: unless-stopped
    tty: true
    environment:
      POSTGRES_USER: root
      POSTGRES_PASSWORD: root
      POSTGRES_DB: data
    ports:
      - "5432:5432"
    volumes:
      - ./docker/postgres:/var/lib/postgresql/data
    networks:
      - laravel

DB_CONNECTION=pgsql
DB_HOST=postgres
DB_PORT=5432
DB_DATABASE=data
DB_USERNAME=root
DB_PASSWORD=root

<?php

namespace App\Tests;

use ApiPlatform\Core\Bridge\Symfony\Bundle\Test\ApiTestCase;
use App\Service\DaDataService;
use Mockery;

class ApiTest extends ApiTestCase
{
    public function testDaDataRequest(): void
    {
        $client = static::createClient();
/*        $mock = $this->getMockBuilder(DaDataService::class)
            ->disableOriginalConstructor()
            ->getMock();

        $mock->expects($this->once())
            ->method('getDaData')
            ->willReturn(20);*/

        $mock = Mockery::mock(DaDataService::class);

        $mock->shouldReceive('getDaData')
            ->zeroOrMoreTimes()
            ->andReturn(7);

        $client->getContainer()->set(DaDataService::class, $mock);
        $response = $client->request('GET', '/test');

        $content = json_decode($response->getContent(), true);

        self::assertEquals(7, $content['returnTest']);
        self::assertResponseIsSuccessful();
    }
}