/** * Testing \Magento\Framework\Validator\Exception::getMessage * @return void */ public function testGetMessage() { $expectedMessage = 'error1' . PHP_EOL . 'error2' . PHP_EOL . 'error3'; $messages = ['field1' => ['error1', 'error2'], 'field2' => ['error3']]; $exception = new \Magento\Framework\Validator\Exception(null, null, $messages); $this->assertEquals($expectedMessage, $exception->getMessage()); }