use ClassName::class syntax

Author: dg

tests/Database/Table/Selection.insert().phpt

@@ -45,7 +45,7 @@ if ($driverName !== 'sqlsrv') {
 			'name' => 'Jon Snow',
 			'web' => 'http://example.com',
 		]);
-	}, '\PDOException');
+	}, PDOException::class);
 }
 
 

tests/Database/Table/SqlBuilder.addWhere().phpt

@@ -240,5 +240,5 @@ test(function () use ($driverName, $context, $connection, $structure) {
 
 	Assert::exception(function () use ($e) {
 		throw $e->getPrevious();
-	}, 'LogicException', "Table 'book_tag' does not have a primary key.");
+	}, LogicException::class, "Table 'book_tag' does not have a primary key.");
 });