Issue #1992950 by xjm: Stop use-ing Exception.

core/lib/Drupal/Component/Archiver/ArchiveTar.php

@@ -42,8 +42,6 @@
 
 namespace Drupal\Component\Archiver;
 
-use Exception;
-
 //require_once 'PEAR.php';
 //
 //
@@ -636,7 +634,7 @@ class ArchiveTar // extends PEAR
     {
         // ----- To be completed
 //        $this->raiseError($p_message);
-        throw new Exception($p_message);
+        throw new \Exception($p_message);
     }
     // }}}
 
@@ -645,7 +643,7 @@ class ArchiveTar // extends PEAR
     {
         // ----- To be completed
 //        $this->raiseError($p_message);
-        throw new Exception($p_message);
+        throw new \Exception($p_message);
     }
     // }}}
 

core/lib/Drupal/Component/Archiver/ArchiverException.php

@@ -7,10 +7,8 @@
 
 namespace Drupal\Component\Archiver;
 
-use Exception;
-
 /**
  * Defines an exception class for Drupal\Component\Archiver\ArchiverInterface.
  */
-class ArchiverException extends Exception {
-}
+class ArchiverException extends \Exception {}
+

core/lib/Drupal/Component/Plugin/Exception/ContextException.php

@@ -7,9 +7,7 @@
 
 namespace Drupal\Component\Plugin\Exception;
 
-use Exception;
-
 /**
  * An exception class to be thrown for context plugin exceptions.
  */
-class ContextException extends Exception implements ExceptionInterface { }
+class ContextException extends \Exception implements ExceptionInterface { }

core/lib/Drupal/Component/Plugin/Exception/PluginException.php

@@ -6,10 +6,8 @@
 
 namespace Drupal\Component\Plugin\Exception;
 
-use Exception;
-
 /**
  * Generic Plugin exception class to be thrown when no more specific class
  * is applicable.
  */
-class PluginException extends Exception implements ExceptionInterface { }
+class PluginException extends \Exception implements ExceptionInterface { }

core/lib/Drupal/Core/Config/DatabaseStorage.php

@@ -9,7 +9,6 @@ namespace Drupal\Core\Config;
 
 use Drupal\Core\Database\Database;
 use Drupal\Core\Database\Connection;
-use Exception;
 
 /**
  * Defines the Database storage controller.
@@ -81,7 +80,7 @@ class DatabaseStorage implements StorageInterface {
         $data = $this->decode($raw);
       }
     }
-    catch (Exception $e) {
+    catch (\Exception $e) {
     }
     return $data;
   }

core/lib/Drupal/Core/Database/Driver/mysql/Schema.php

@@ -13,8 +13,6 @@ use Drupal\Core\Database\SchemaObjectExistsException;
 use Drupal\Core\Database\SchemaObjectDoesNotExistException;
 use Drupal\Core\Database\Schema as DatabaseSchema;
 
-use Exception;
-
 /**
  * @addtogroup schemaapi
  * @{
@@ -516,7 +514,7 @@ class Schema extends DatabaseSchema {
       $this->connection->queryRange("SELECT 1 FROM {" . $table . "}", 0, 1);
       return TRUE;
     }
-    catch (Exception $e) {
+    catch (\Exception $e) {
       return FALSE;
     }
   }
@@ -533,7 +531,7 @@ class Schema extends DatabaseSchema {
       $this->connection->queryRange("SELECT $column FROM {" . $table . "}", 0, 1);
       return TRUE;
     }
-    catch (Exception $e) {
+    catch (\Exception $e) {
       return FALSE;
     }
   }

core/lib/Drupal/Core/Database/Driver/pgsql/Install/Tasks.php

@@ -12,8 +12,6 @@ use Drupal\Core\Database\Install\Tasks as InstallTasks;
 use Drupal\Core\Database\Driver\pgsql\Connection;
 use Drupal\Core\Database\DatabaseNotFoundException;
 
-use Exception;
-
 /**
  * PostgreSQL specific install functions
  */
@@ -55,7 +53,7 @@ class Tasks extends InstallTasks {
       Database::getConnection();
       $this->pass('Drupal can CONNECT to the database ok.');
     }
-    catch (Exception $e) {
+    catch (\Exception $e) {
     // Attempt to create the database if it is not found.
       if ($e->getCode() == Connection::DATABASE_NOT_FOUND) {
         // Remove the database string from connection info.
@@ -118,7 +116,7 @@ class Tasks extends InstallTasks {
         $this->fail(st($text, $replacements));
       }
     }
-    catch (Exception $e) {
+    catch (\Exception $e) {
       $this->fail(st('Drupal could not determine the encoding of the database was set to UTF-8'));
     }
   }
@@ -145,7 +143,7 @@ class Tasks extends InstallTasks {
         try {
           db_query($query);
         }
-        catch (Exception $e) {
+        catch (\Exception $e) {
           // Ignore possible errors when the user doesn't have the necessary
           // privileges to ALTER the database.
         }
@@ -233,7 +231,7 @@ class Tasks extends InstallTasks {
 
       $this->pass(st('PostgreSQL has initialized itself.'));
     }
-    catch (Exception $e) {
+    catch (\Exception $e) {
       $this->fail(st('Drupal could not be correctly setup with the existing database. Revise any errors.'));
     }
   }

core/lib/Drupal/Core/Database/Driver/pgsql/Schema.php

@@ -13,8 +13,6 @@ use Drupal\Core\Database\SchemaObjectExistsException;
 use Drupal\Core\Database\SchemaObjectDoesNotExistException;
 use Drupal\Core\Database\Schema as DatabaseSchema;
 
-use Exception;
-
 /**
  * @addtogroup schemaapi
  * @{

core/lib/Drupal/Core/Database/Driver/sqlite/Connection.php

@@ -16,7 +16,6 @@ use Drupal\Core\Database\Driver\sqlite\Statement;
 use Drupal\Core\Database\Connection as DatabaseConnection;
 
 use PDO;
-use Exception;
 use SplFileInfo;
 
 /**
@@ -161,7 +160,7 @@ class Connection extends DatabaseConnection {
             unlink($this->connectionOptions['database'] . '-' . $prefix);
           }
         }
-        catch (Exception $e) {
+        catch (\Exception $e) {
           // Ignore the exception and continue. There is nothing we can do here
           // to report the error or fail safe.
         }

core/lib/Drupal/Core/Database/Driver/sqlite/Install/Tasks.php

@@ -12,8 +12,6 @@ use Drupal\Core\Database\Driver\sqlite\Connection;
 use Drupal\Core\Database\DatabaseNotFoundException;
 use Drupal\Core\Database\Install\Tasks as InstallTasks;
 
-use Exception;
-
 class Tasks extends InstallTasks {
   protected $pdoDriver = 'sqlite';
 
@@ -56,7 +54,7 @@ class Tasks extends InstallTasks {
       Database::getConnection();
       $this->pass('Drupal can CONNECT to the database ok.');
     }
-    catch (Exception $e) {
+    catch (\Exception $e) {
       // Attempt to create the database if it is not found.
       if ($e->getCode() == Connection::DATABASE_NOT_FOUND) {
         // Remove the database string from connection info.

core/lib/Drupal/Core/Database/Driver/sqlite/Schema.php

@@ -11,9 +11,6 @@ use Drupal\Core\Database\SchemaObjectExistsException;
 use Drupal\Core\Database\SchemaObjectDoesNotExistException;
 use Drupal\Core\Database\Schema as DatabaseSchema;
 
-use Exception;
-
-
 /**
  * @ingroup schemaapi
  * @{
@@ -451,7 +448,7 @@ class Schema extends DatabaseSchema {
         }
       }
       else {
-        new Exception("Unable to parse the column type " . $row->type);
+        new \Exception("Unable to parse the column type " . $row->type);
       }
     }
     $indexes = array();

core/lib/Drupal/Core/Database/Install/Tasks.php

@@ -10,7 +10,6 @@ namespace Drupal\Core\Database\Install;
 use Drupal\Core\Database\Database;
 
 use PDO;
-use Exception;
 
 /**
  * Database installer structure.
@@ -166,7 +165,7 @@ abstract class Tasks {
       Database::getConnection();
       $this->pass('Drupal can CONNECT to the database ok.');
     }
-    catch (Exception $e) {
+    catch (\Exception $e) {
       $this->fail(st('Failed to connect to your database server. The server reports the following message: %error.<ul><li>Is the database server running?</li><li>Does the database exist, and have you entered the correct database name?</li><li>Have you entered the correct username and password?</li><li>Have you entered the correct database hostname?</li></ul>', array('%error' => $e->getMessage())));
       return FALSE;
     }
@@ -181,7 +180,7 @@ abstract class Tasks {
       db_query($query);
       $this->pass(st($pass));
     }
-    catch (Exception $e) {
+    catch (\Exception $e) {
       $this->fail(st($fail, array('%query' => $query, '%error' => $e->getMessage(), '%name' => $this->name())));
       return !$fatal;
     }

core/lib/Drupal/Core/Database/Query/Insert.php

@@ -9,8 +9,6 @@ namespace Drupal\Core\Database\Query;
 
 use Drupal\Core\Database\Database;
 
-use Exception;
-
 /**
  * General class for an abstracted INSERT query.
  */
@@ -220,7 +218,7 @@ class Insert extends Query {
         $last_insert_id = $this->connection->query($sql, $insert_values, $this->queryOptions);
       }
     }
-    catch (Exception $e) {
+    catch (\Exception $e) {
       // One of the INSERTs failed, rollback the whole batch.
       $transaction->rollback();
       // Rethrow the exception for the calling code.

core/lib/Drupal/Core/Entity/EntityMalformedException.php

@@ -7,9 +7,7 @@
 
 namespace Drupal\Core\Entity;
 
-use Exception;
-
 /**
  * Defines an exception thrown when a malformed entity is passed.
  */
-class EntityMalformedException extends Exception { }
+class EntityMalformedException extends \Exception { }

core/lib/Drupal/Core/Entity/EntityStorageException.php

@@ -7,9 +7,7 @@
 
 namespace Drupal\Core\Entity;
 
-use Exception;
-
 /**
  * Defines an exception thrown when storage operations fail.
  */
-class EntityStorageException extends Exception { }
+class EntityStorageException extends \Exception { }

core/lib/Drupal/Core/Executable/ExecutableException.php

@@ -6,11 +6,9 @@
 
 namespace Drupal\Core\Executable;
 
-use Exception;
 use Drupal\Component\Plugin\Exception\ExceptionInterface;
 
 /**
  * Generic executable plugin exception class.
  */
-class ExecutableException extends Exception implements ExceptionInterface {
-}
+class ExecutableException extends \Exception implements ExceptionInterface {}

core/lib/Drupal/Core/TypedData/MissingContextException.php

@@ -7,11 +7,7 @@
 
 namespace Drupal\Core\TypedData;
 
-use Exception;
-
 /**
  * Exception thrown when data wrappers miss contextual information.
  */
-class MissingContextException extends Exception {
-
-}
+class MissingContextException extends \Exception {}

core/lib/Drupal/Core/TypedData/ReadOnlyException.php

@@ -7,11 +7,7 @@
 
 namespace Drupal\Core\TypedData;
 
-use Exception;
-
 /**
  * Exception thrown when trying to write or set ready-only data.
  */
-class ReadOnlyException extends Exception {
-
-}
+class ReadOnlyException extends \Exception {}

core/lib/Drupal/Core/Updater/UpdaterException.php

@@ -7,8 +7,6 @@
 
 namespace Drupal\Core\Updater;
 
-use Exception;
-
 /**
  * Defines a Exception class for the Drupal\Core\Updater\Updater class
  * hierarchy.
@@ -17,5 +15,4 @@ use Exception;
  * specific name so that call sites that want to tell the difference can
  * specifically catch these exceptions and treat them differently.
  */
-class UpdaterException extends Exception {
-}
+class UpdaterException extends \Exception {}

core/lib/Drupal/Core/Utility/UpdateException.php

@@ -7,9 +7,7 @@
 
 namespace Drupal\Core\Utility;
 
-use Exception;
-
 /**
  * Exception class used to throw error if a module update fails.
  */
-class UpdateException extends Exception { }
+class UpdateException extends \Exception { }

core/modules/field/lib/Drupal/field/Tests/CrudTest.php

@@ -8,7 +8,6 @@
 namespace Drupal\field\Tests;
 
 use Drupal\field\FieldException;
-use Exception;
 
 class CrudTest extends FieldUnitTestBase {
 
@@ -168,7 +167,7 @@ class CrudTest extends FieldUnitTestBase {
       $field = field_create_field($field_definition);
       $this->assertTrue(FALSE, 'Field creation (correctly) fails.');
     }
-    catch (Exception $e) {
+    catch (\Exception $e) {
       $this->assertTrue(TRUE, 'Field creation (correctly) fails.');
     }
 

core/modules/field_sql_storage/lib/Drupal/field_sql_storage/Tests/FieldSqlStorageTest.php

@@ -10,7 +10,6 @@ namespace Drupal\field_sql_storage\Tests;
 use Drupal\Core\Database\Database;
 use Drupal\field\FieldException;
 use Drupal\system\Tests\Entity\EntityUnitTestBase;
-use Exception;
 use PDO;
 
 /**
@@ -339,7 +338,7 @@ class FieldSqlStorageTest extends EntityUnitTestBase {
       field_update_field($field);
       $this->fail(t('Update succeeded.'));
     }
-    catch (Exception $e) {
+    catch (\Exception $e) {
       $this->pass(t('Update properly failed.'));
     }
 

core/modules/locale/lib/Drupal/locale/Gettext.php

@@ -10,7 +10,6 @@ namespace Drupal\locale;
 use Drupal\Component\Gettext\PoStreamReader;
 use Drupal\Component\Gettext\PoMemoryWriter;
 use Drupal\locale\PoDatabaseWriter;
-use Exception;
 
 /**
  * Static class providing Drupal specific Gettext functionality.
@@ -89,13 +88,13 @@ class Gettext {
     try {
       $reader->open();
     }
-    catch (Exception $exception) {
+    catch (\Exception $exception) {
       throw $exception;
     }
 
     $header = $reader->getHeader();
     if (!$header) {
-      throw new Exception('Missing or malformed header.');
+      throw new \Exception('Missing or malformed header.');
     }
 
     // Initialize the database writer.
@@ -115,7 +114,7 @@ class Gettext {
       }
       $writer->writeItems($reader, $options['items']);
     }
-    catch (Exception $exception) {
+    catch (\Exception $exception) {
       throw $exception;
     }
 

core/modules/locale/lib/Drupal/locale/StringStorageException.php

@@ -7,9 +7,7 @@
 
 namespace Drupal\locale;
 
-use Exception;
-
 /**
  * Defines an exception thrown when storage operations fail.
  */
-class StringStorageException extends Exception { }
+class StringStorageException extends \Exception { }

core/modules/node/lib/Drupal/node/Tests/NodeCreationTest.php

@@ -8,7 +8,6 @@
 namespace Drupal\node\Tests;
 
 use Drupal\Core\Database\Database;
-use Exception;
 
 /**
  * Tests creating and saving a node.
@@ -75,7 +74,7 @@ class NodeCreationTest extends NodeTestBase {
       entity_create('node', $edit)->save();
       $this->fail(t('Expected exception has not been thrown.'));
     }
-    catch (Exception $e) {
+    catch (\Exception $e) {
       $this->pass(t('Expected exception has been thrown.'));
     }
 

core/modules/node/lib/Drupal/node/Tests/NodeQueryAlterTest.php

@@ -7,8 +7,6 @@
 
 namespace Drupal\node\Tests;
 
-use Exception;
-
 /**
  * Tests node_query_node_access_alter().
  */
@@ -100,7 +98,7 @@ class NodeQueryAlterTest extends NodeTestBase {
       $result = $query->execute()->fetchAll();
       $this->assertEqual(count($result), 4, 'User with access can see correct nodes');
     }
-    catch (Exception $e) {
+    catch (\Exception $e) {
       $this->fail(t('Altered query is malformed'));
     }
   }
@@ -123,7 +121,7 @@ class NodeQueryAlterTest extends NodeTestBase {
       $result = $query->execute()->fetchAll();
       $this->assertEqual(count($result), 0, 'User with no access cannot see nodes');
     }
-    catch (Exception $e) {
+    catch (\Exception $e) {
       $this->fail(t('Altered query is malformed'));
     }
   }
@@ -146,7 +144,7 @@ class NodeQueryAlterTest extends NodeTestBase {
       $result = $query->execute()->fetchAll();
       $this->assertEqual(count($result), 0, 'User with view-only access cannot edit nodes');
     }
-    catch (Exception $e) {
+    catch (\Exception $e) {
       $this->fail($e->getMessage());
       $this->fail((string) $query);
       $this->fail(t('Altered query is malformed'));
@@ -186,7 +184,7 @@ class NodeQueryAlterTest extends NodeTestBase {
       $result = $query->execute()->fetchAll();
       $this->assertEqual(count($result), 0, 'User view privileges are not overridden');
     }
-    catch (Exception $e) {
+    catch (\Exception $e) {
       $this->fail(t('Altered query is malformed'));
     }
 
@@ -208,7 +206,7 @@ class NodeQueryAlterTest extends NodeTestBase {
       $result = $query->execute()->fetchAll();
       $this->assertEqual(count($result), 4, 'User view privileges are overridden');
     }
-    catch (Exception $e) {
+    catch (\Exception $e) {
       $this->fail(t('Altered query is malformed'));
     }
     state()->delete('node_access_test.no_access_uid');

core/modules/simpletest/lib/Drupal/simpletest/TestBase.php

@@ -14,7 +14,6 @@ use Drupal\Core\Database\ConnectionNotDefinedException;
 use Drupal\Core\DrupalKernel;
 use ReflectionMethod;
 use ReflectionObject;
-use Exception;
 
 /**
  * Base class for Drupal tests.
@@ -733,7 +732,7 @@ abstract class TestBase {
               $this->$method();
               // Finish up.
             }
-            catch (Exception $e) {
+            catch (\Exception $e) {
               $this->exceptionHandler($e);
             }
             $this->tearDown();

core/modules/system/lib/Drupal/system/Tests/Database/InvalidDataTest.php

@@ -8,7 +8,6 @@
 namespace Drupal\system\Tests\Database;
 
 use Drupal\Core\Database\IntegrityConstraintViolationException;
-use Exception;
 
 /**
  * Tests invalid data handling.

core/modules/system/lib/Drupal/system/Tests/Database/SchemaTest.php

@@ -10,8 +10,6 @@ namespace Drupal\system\Tests\Database;
 use Drupal\Core\Database\Database;
 use Drupal\simpletest\UnitTestBase;
 
-use Exception;
-
 /**
  * Tests the Schema API.
  */
@@ -141,7 +139,7 @@ class SchemaTest extends UnitTestBase {
     try {
       db_create_table('test_timestamp', $table_specification);
     }
-    catch (Exception $e) {}
+    catch (\Exception $e) {}
     $this->assertTrue(db_table_exists('test_timestamp'), 'Table with database specific datatype was created.');
   }
 
@@ -161,7 +159,7 @@ class SchemaTest extends UnitTestBase {
          ->execute();
       return TRUE;
     }
-    catch (Exception $e) {
+    catch (\Exception $e) {
       return FALSE;
     }
   }
@@ -233,7 +231,7 @@ class SchemaTest extends UnitTestBase {
          ->execute();
       return TRUE;
     }
-    catch (Exception $e) {
+    catch (\Exception $e) {
       return FALSE;
     }
   }

core/modules/system/lib/Drupal/system/Tests/Database/TransactionTest.php

@@ -10,7 +10,6 @@ namespace Drupal\system\Tests\Database;
 use Drupal\Core\Database\Database;
 use Drupal\Core\Database\TransactionOutOfOrderException;
 use Drupal\Core\Database\TransactionNoActiveException;
-use Exception;
 
 /**
  * Tests transaction support, particularly nesting.
@@ -176,7 +175,7 @@ class TransactionTest extends DatabaseTestBase {
       $saved_age = db_query('SELECT age FROM {test} WHERE name = :name', array(':name' => 'DanielB'))->fetchField();
       $this->assertNotIdentical($saved_age, '19', 'Cannot retrieve DanielB row after commit.');
     }
-    catch (Exception $e) {
+    catch (\Exception $e) {
       $this->fail($e->getMessage());
     }
   }
@@ -202,7 +201,7 @@ class TransactionTest extends DatabaseTestBase {
       $saved_age = db_query('SELECT age FROM {test} WHERE name = :name', array(':name' => 'DanielB'))->fetchField();
       $this->assertIdentical($saved_age, '19', 'DanielB not rolled back, since transactions are not supported.');
     }
-    catch (Exception $e) {
+    catch (\Exception $e) {
       $this->fail($e->getMessage());
     }
   }
@@ -224,7 +223,7 @@ class TransactionTest extends DatabaseTestBase {
       $saved_age = db_query('SELECT age FROM {test} WHERE name = :name', array(':name' => 'DanielA'))->fetchField();
       $this->assertIdentical($saved_age, '19', 'Can retrieve DanielA row after commit.');
     }
-    catch (Exception $e) {
+    catch (\Exception $e) {
       $this->fail($e->getMessage());
     }
   }

core/modules/system/lib/Drupal/system/Tests/Entity/EntityTranslationFormTest.php

@@ -7,8 +7,6 @@
 
 namespace Drupal\system\Tests\Entity;
 
-use Exception;
-use InvalidArgumentException;
 use Drupal\simpletest\WebTestBase;
 use Drupal\Core\Language\Language;
 

core/modules/system/lib/Drupal/system/Tests/Plugin/AlterDecoratorTest.php

@@ -8,7 +8,6 @@
 namespace Drupal\system\Tests\Plugin;
 
 use Drupal\Component\Plugin\Exception\ExceptionInterface;
-use Exception;
 use Drupal\plugin_test\Plugin\AlterDecoratorTestPluginManager;
 use Drupal\plugin_test\Plugin\TestPluginManager;
 use Drupal\simpletest\WebTestBase;

core/modules/system/lib/Drupal/system/Tests/Plugin/FactoryTest.php

@@ -8,7 +8,6 @@
 namespace Drupal\system\Tests\Plugin;
 
 use Drupal\Component\Plugin\Exception\ExceptionInterface;
-use Exception;
 
 /**
  * Tests that plugins are correctly instantiated.
@@ -41,7 +40,7 @@ class FactoryTest extends PluginTestBase {
     catch (ExceptionInterface $e) {
       $this->pass('Drupal\Component\Plugin\Exception\ExceptionInterface expected and caught.');
     }
-    catch (Exception $e) {
+    catch (\Exception $e) {
       $this->fail('Drupal\Component\Plugin\Exception\ExceptionInterface expected, but ' . get_class($e) . ' was thrown.');
     }
   }
@@ -78,7 +77,7 @@ class FactoryTest extends PluginTestBase {
       catch (ExceptionInterface $e) {
         $this->pass('Drupal\Component\Plugin\Exception\ExceptionInterface expected and caught.');
       }
-      catch (Exception $e) {
+      catch (\Exception $e) {
         $this->fail('An unexpected Exception of type "' . get_class($e) . '" was thrown with message ' . $e->getMessage());
       }
     }

core/modules/system/lib/Drupal/system/Tests/Routing/RouteProviderTest.php

@@ -18,8 +18,6 @@ use Drupal\Core\Routing\RouteProvider;
 use Drupal\Core\Database\Database;
 use Drupal\Core\Routing\MatcherDumper;
 
-use Exception;
-
 /**
  * Basic tests for the RouteProvider.
  */
@@ -329,7 +327,7 @@ class RouteProviderTest extends UnitTestBase {
       $routes = $provider->getRouteCollectionForRequest($request);
       $this->fail(t('No exception was thrown.'));
     }
-    catch (Exception $e) {
+    catch (\Exception $e) {
       $this->assertTrue($e instanceof ResourceNotFoundException, 'The correct exception was thrown.');
     }
   }

core/modules/system/lib/Drupal/system/Tests/Upgrade/UpgradePathTestBase.php

@@ -10,7 +10,6 @@ namespace Drupal\system\Tests\Upgrade;
 use Drupal\Component\Utility\Crypt;
 use Drupal\Core\Database\Database;
 use Drupal\simpletest\WebTestBase;
-use Exception;
 use Symfony\Component\DependencyInjection\Exception\InvalidArgumentException;
 use Symfony\Component\HttpFoundation\Request;
 
@@ -188,7 +187,7 @@ abstract class UpgradePathTestBase extends WebTestBase {
     }
     // Since cache_bootstrap won't exist in a Drupal 6 site, ignore the
     // exception if the above fails.
-    catch (Exception $e) {}
+    catch (\Exception $e) {}
   }
 
   /**
@@ -220,12 +219,12 @@ abstract class UpgradePathTestBase extends WebTestBase {
     // Load the first update screen.
     $this->getUpdatePhp();
     if (!$this->assertResponse(200)) {
-      throw new Exception('Initial GET to update.php did not return HTTP 200 status.');
+      throw new \Exception('Initial GET to update.php did not return HTTP 200 status.');
     }
 
     // Ensure that the first update screen appeared correctly.
     if (!$this->assertFieldByXPath('//input[@type="submit"]')) {
-      throw new Exception('An error was encountered during the first access to update.php.');
+      throw new \Exception('An error was encountered during the first access to update.php.');
     }
 
     // Initialize config directories and rebuild the service container after
@@ -236,7 +235,7 @@ abstract class UpgradePathTestBase extends WebTestBase {
     // Continue.
     $this->drupalPost(NULL, array(), t('Continue'));
     if (!$this->assertResponse(200)) {
-      throw new Exception('POST to continue update.php did not return HTTP 200 status.');
+      throw new \Exception('POST to continue update.php did not return HTTP 200 status.');
     }
 
     // The test should pass if there are no pending updates.
@@ -250,12 +249,12 @@ abstract class UpgradePathTestBase extends WebTestBase {
     // Go!
     $this->drupalPost(NULL, array(), t('Apply pending updates'));
     if (!$this->assertResponse(200)) {
-      throw new Exception('POST to update.php to apply pending updates did not return HTTP 200 status.');
+      throw new \Exception('POST to update.php to apply pending updates did not return HTTP 200 status.');
     }
 
     if (!$this->assertNoText(t('An unrecoverable error has occurred.'))) {
       // Error occured during update process.
-      throw new Exception('POST to update.php to apply pending updates detected an unrecoverable error.');
+      throw new \Exception('POST to update.php to apply pending updates detected an unrecoverable error.');
     }
 
     // Check for errors during the update process.
@@ -269,7 +268,7 @@ abstract class UpgradePathTestBase extends WebTestBase {
     if (!empty($this->upgradeErrors)) {
       // Upgrade failed, the installation might be in an inconsistent state,
       // don't process.
-      throw new Exception('Errors during update process.');
+      throw new \Exception('Errors during update process.');
     }
 
     // Allow tests to check the completion page.
@@ -279,7 +278,7 @@ abstract class UpgradePathTestBase extends WebTestBase {
     $this->getUpdatePhp();
     $this->drupalPost(NULL, array(), t('Continue'));
     if (!$this->assertText(t('No pending updates.'), 'No pending updates at the end of the update process.')) {
-      throw new Exception('update.php still shows pending updates after execution.');
+      throw new \Exception('update.php still shows pending updates after execution.');
     }
 
     // Upgrade succeed, rebuild the environment so that we can call the API