getActiveSheet(); self::assertSame($spreadsheet, $worksheet->getParent()); self::assertSame($spreadsheet, $worksheet->getParentOrThrow()); } public function testGetParent(): void { $worksheet = new Worksheet(); self::assertNull($worksheet->getParent()); } public function testGetParentOrThrow(): void { $this->expectException(SpException::class); $this->expectExceptionMessage('Sheet does not have a parent'); $worksheet = new Worksheet(); $worksheet->getParentOrThrow(); } }