如何在不连接数据库的情况下测试服务功能答案

【问题标题】：How to test service function without connecting on database如何在不连接数据库的情况下测试服务功能
【发布时间】：2019-05-12 04:29:38
【问题描述】：

我再次向你们求助，因为我在这个“任务”上花费了相当多的时间，但我仍然无法弄清楚如何测试我的服务方法，没有我在数据库上的函数连接（我必须模拟存储库函数）

这是我的服务功能

public function getInfo($history, $name)
{
    $requestRepository = $this->em->getRepository(Request::class);

    if ($history) {
        $requests = [];
        foreach ($requestRepository->getRequestsByName($name) as $request) {
            $requests[] = $requestRepository->transform($request);
        }
        return $requests;
    } else {
        $request = $requestRepository->getCompletedRequestByName($name);
        if (!is_null($request)) {
            return $requestRepository->transform($request);
        } else {
            return null;
        }
    }
}

这是我的测试

public function testGetInfo()
{
    /* This returns errors, because it tries to connect to DATABASE, but I don't wan't that, that's why I figure out I need to mock this
    $requestManager = new RequestManager($this->entityManager);
    $test = $requestManager->getInfo('histroy', 'antrax.com');
    */

    $requestManager = $this->getMockBuilder(RequestManager::class)->disableOriginalConstructor()->setMethods(['getInfo'])
        ->getMock();

    // And rest of this are just my FAILED attempts to figure out, how to test my methods
    $queryBuilder = $this->getMockBuilder(RequestRepository::class)->disableOriginalConstructor()
        ->setMethods(['getInfo'])->getMock();

    $test = $queryBuilder->method('getInfo')->willReturnSelf();

    $queryBuilder->method('getInfo')->willReturnCallback(function ($field, $value) use ($queryBuilder, $test){
        if ($field == 'newStatus') {
            $this->assertSame('EXPIRED', $value);
        }
        return $queryBuilder;
    });
}

请有人帮助我如何为我的方法 getInfo 编写一个测试，以便它有 100% 的覆盖率。如果您需要任何其他信息，请告诉我，我会提供。谢谢！

【问题讨论】：

您正在函数内创建存储库。我认为这就是为什么你无法让它像你想要的那样工作的主要原因。我将使存储库成为在您的构造函数中初始化的变量，以便您可以轻松地模拟存储库。嘲笑requestManager 没有多大意义，因为这是您要测试的东西。

标签： symfony service doctrine-orm phpunit symfony4

【解决方案1】：

这是我的问题的答案

public function testGetInfo()
{
    $mockEntity = $this->mockEntityManager;

    $name = 'antrax.com';
    $requestMock = new RequestEntity();
    $transformedRequest = [
        'id' => 1
    ];

    $requestRepo = $this->getMockBuilder(RequestRepository::class)->disableOriginalConstructor()
    ->setMethods(['getRequestsByName', 'transform', 'getCompletedRequestByName'])->getMock();

    $requestRepo->method('getRequestsByName')->willReturnCallback(function ($passedName) use ($name, $requestMock) {
        $this->assertSame($name, $passedName);

        return [$requestMock, $requestMock];
    });

    $requestRepo->method('transform')->willReturnCallback(function ($request) use ($requestMock, $transformedRequest) {
        $this->assertSame($requestMock, $request);

        return $transformedRequest;
    });

    $i = 0;
    $requestRepo->method('getCompletedRequestByName')->willReturnCallback(function ($passedName) use ($name, $requestMock, &$i) {
        $this->assertSame($name, $passedName);
        if ($i == 0) {
            $i+=1;
            return null;
        } else {
            return $requestMock;
        }
    });

    $mockEntity->method('getRepository')->willReturnCallback(function ($requestClass) use ($requestRepo) {
        $this->assertSame(RequestEntity::class, $requestClass);

        return $requestRepo;
    });

    $requestManager = new RequestManager($mockEntity);
    $this->assertSame([$transformedRequest, $transformedRequest], $requestManager->getInfo(true, $name));

    $this->assertNull($requestManager->getInfo(false, $name));

    $this->assertSame($transformedRequest, $requestManager->getInfo(false, $name));
}

【讨论】：