public function testSetTooManyCookies() { /** @var PublicCookieMetadata $publicCookieMetadata */ $publicCookieMetadata = $this->objectManager->getObject('Magento\\Framework\\Stdlib\\Cookie\\PublicCookieMetadata'); $cookieValue = 'some_value'; // Set self::MAX_NUM_COOKIES number of cookies in superglobal $_COOKIE. for ($i = count($_COOKIE); $i < self::MAX_NUM_COOKIES; $i++) { $_COOKIE['test_cookie_' . $i] = 'some_value'; } $this->scopeMock->expects($this->once())->method('getPublicCookieMetadata')->with()->will($this->returnValue($publicCookieMetadata)); try { $this->cookieManager->setPublicCookie(self::MAX_COOKIE_SIZE_TEST_NAME, $cookieValue, $publicCookieMetadata); $this->fail('Failed to throw exception of too many cookies.'); } catch (CookieSizeLimitReachedException $e) { $this->assertEquals('Unable to send the cookie. Maximum number of cookies would be exceeded.', $e->getMessage()); } }