有可能返回一个引用.测试PHPUnit 10.3 .

注意事项

这没有用ObjectProphecy测试过，因为它似乎没有实现默认的mocking对象。所以对于这个示例代码，我使用了原生的PHPUnit MockObject。

<?php declare(strict_types=1);

use PHPUnit\Framework\MockObject\MockObject;
use PHPUnit\Framework\TestCase;

// Never used, but neccessary to have a class to be able to create a mock
class MyFoo {
    public function foo(): array
    {
        var_dump('called foo()');

        return ['foo'];
    }
}

final class ReturnTest extends TestCase
{
    private MockObject $mock;
    private array      $x;

    protected function setUp(): void
    {
        $this->x = [];
        $this->mock = $this->createMock(MyFoo::class);
        $this->mock->method('foo')->willReturnReference($this->x);
    }

    public function test(): void
    {
        $this->assertEquals([], $this->mock->foo());
        $this->x = [1];
        $this->assertEquals([1], $this->mock->foo());
    }
}