MAGETWO-44162: Wrong password validation for Sign In on checkout

Author: Stanislav Idolov

app/code/Magento/Customer/Controller/Account/LoginPost.php

@@ -92,15 +92,12 @@ public function execute()
                     );
                     $this->messageManager->addError($message);
                     $this->session->setUsername($login['username']);
-                }
-                catch (AuthenticationException $e) {
+                } catch (AuthenticationException $e) {
                     $message = __('Invalid login or password.');
                     $this->messageManager->addError($message);
                     $this->session->setUsername($login['username']);
                 } catch (\Exception $e) {
-                    $this->messageManager->addError(
-                        __('Something went wrong while validating the login and password.')
-                    );
+                    $this->messageManager->addError(__('Invalid login or password.'));
                 }
             } else {
                 $this->messageManager->addError(__('A login and a password are required.'));

app/code/Magento/Customer/Controller/Ajax/Login.php

@@ -116,7 +116,7 @@ public function execute()
         } catch (\Exception $e) {
             $response = [
                 'errors' => true,
-                'message' => __('Something went wrong while validating the login and password.')
+                'message' => __('Invalid login or password.')
             ];
         }
         /** @var \Magento\Framework\Controller\Result\Json $resultJson */

app/code/Magento/Customer/Test/Unit/Controller/Account/LoginPostTest.php

@@ -423,7 +423,7 @@ protected function mockExceptions($exception, $username)
             case '\Exception':
                 $this->messageManager->expects($this->once())
                     ->method('addError')
-                    ->with(__('Something went wrong while validating the login and password.'))
+                    ->with(__('Invalid login or password.'))
                     ->willReturnSelf();
                 break;
         }