PHPUnit: Expects in setUp is bad usage

[ScreamingDev]

Let's start with common details:

Subject	Details
Issue type	Feature request
Plugin	Php Inspections (EA Extended) or Php Inspections (EA Ultimate), which version

Current behaviour (description/screenshot:)

class FistTest extends TestCase {
  function setUp() {
    $this->arrayMock = $this->createMock(\ArrayAccess::class);
    $this->arrayMock->expects($this->once())->method('getArrayCopy')->willReturn([1337]);
  } 

  function testFoo() {
    static::assertEquals(1337, $this-arrayMock()->getArrayCopy()[0]);
  }
}

class SimilarTest extend FirstTest {
  function testBar() {
    static::assertEquals( 'flat', (new World())->getShape() );
  }
}

(unsure if code valid) The second test fails because it did not call getArrayCopy (which is expected once).

Expected behaviour

It should not fail. So using expect in the setUp seems like bad usage to me. But I dunno what a phpUnit author would say. I would expect the setUp to just use $mock->method('foo')->willReturn('bar') without any expect at all. In my opinion using expect in setUp is bad usage but until well discussed or some phpUnit dev is asked I suggest this to be an optional check.