public function testGetErrorStacks()
{
$errorStack = $this->prophesize(ErrorStack::class);
$this->bench1->getSubjects()->willReturn([$this->subject1->reveal()]);
$this->subject1->getVariants()->willReturn([$this->variant1->reveal()]);
$this->variant1->hasErrorStack()->willReturn(true);
$this->variant1->getErrorStack()->willReturn($errorStack->reveal());
$suite = $this->createSuite([$this->bench1->reveal()], [$this->env1->reveal()]);
$this->assertSame([$errorStack->reveal()], $suite->getErrorStacks());
}