Trying to configure method "first" which cannot be configured because it does not exist, has not been specified, is final, or is static

Question

I'll try to create a mock objet to test my application and i've got an error thant i can't fix :

    $userOwnLevy = $this->createMock(User::class);

    $userHasContract = $this->createMock(UserHasContract::class);
    $userHasContract->method('getUser')->willReturn($userOwnLevy);

    $firstUserHasContract = $this
        ->getMockBuilder(UserHasContract::class)
        ->getMock()
        ->method('first')
        ->willReturn($userHasContract);

    $contract = $this->createMock(Contract::class);
    $contract->method('getUserHasContract')->willReturnMap([$firstUserHasContract]);

    $levy = $this->createMock(Levy::class);
    $levy->method('getContract')->willReturn($contract);

The goal is to mock this object :

$levy->getContract()->getUserHasContract()->first()->getUser();

I try this :

        $firstUserHasContract = $this
        ->getMockBuilder(UserHasContract::class)
        ->setMethods(['first'])
        ->getMock()
        ->method('first')
        ->willReturn($userHasContract);

But i got this error

Call to a member function first() on null

So if everyone could help me to understand ? Thanks by advance

Answer 1

Please change willReturnMap to willReturn:

$contract->method('getUserHasContract')->willReturn([$firstUserHasContract]);

Answer 2

Let's declare our mock by chronological order

$userOwnLevy = $this->createMock(User::class);
$contract = $this->createMock(Contract::class);
$userHasContractCollection = $this->getMockBuilder(ArrayCollection::class);
$firstUserHasContract = $this->createMock(UserHasContract::class);
$userHasContract = $this->getMockBuilder(UserHasContract::class);

Then declare the methods by the opposite order of $levy->getContract()->getUserHasContract()->first()->getUser();

$firstUserHasContract->method('getUser')->willReturn($userHasContract);
$userHasContractCollection->method('first')->willReturn($firstUserHasContract);
$contract->method('getUserHasContract')->willReturn($userHasContractCollection);
$userOwnLevy->method('getContract')->willReturn($contract);