PHPUNIT expects not resetting between methods, how to win?

Question

PHP

In setUp I create a class mock

protected function setUp(): void
  {
    parent::setUp(); // TODO: Change the autogenerated stub
    $this->importMock = $this->getMockBuilder(WriteoffsImportService::class)
      ->disableOriginalConstructor()->getMock();
    }

After that, in the method I set the check for execution 1 time

$this->importMock->expects(self::once())->method('importWriteoffs');

The test is running, everything is fine
In the next test, I also set
$this->importMock->expects(self::once())->method('importWriteoffs');
But when I try to execute the test, it says to me that the method cannot be executed more than 1 time.
How is the state saved if the mock is initialized in setUp on a new one and how to make sure that for each test the check for the number of executions is different, and not one for the whole class?

Answer 1

reset after execution in the tearDown() method and/or use the globals-backup option