Cannot use "mixed" as class name

[lindelius]

We're getting the following error when running our PHPUnit suite:

Cannot use 'mixed' as class name as it is reserved in /tmp/MockerykqgHQz on line 1

PHP version: 8.0.8
Mockery version: 1.4.4
PHPUnit version: 9.5.10

---

The contents of the generated file:

<?php class mixed {} 

[ghostwriter]

Attempting to declare a class with name mixed in PHP 8: mixed-type results the following error:
Fatal error: Cannot use 'mixed' as class name as it is reserved in ... on line … https://3v4l.org/hebJi

do you have a test, that attempts to mock a class with the name mixed?

[lindelius]

Hi,

The issue is apparently caused by having methods with a return type of mixed, and then when mocking that class adding shouldReceive that then expects the method to return an object. It's resolved by simply removing the mixed type hint.

interface MyInterface {
    public function getSomething(): mixed;
}

$object = Mockery::mock(MyInterface::class);
$object->shouldReceive('getSomething->someMethod')->andReturn("someValue");

Seems like Mockery should know that mixed is a reserved keyword and just treat it as a stdClass object or whatever. The same code works fine without the return type on the method.

[ramsey]

I have a reproducible example in #1155, which is the same type of bug with the static return type.

[ghostwriter]

Hey @lindelius and @ramsey,

your respective issues have been resolved via #1156 and #1157 (awaiting code review cc: @davedevelopment @padraic).