Bug fixes #2

* Written more test cases (e.g. concurrent transactions)

Author: codercms

src/Driver/MakisePostgres/PooledMakisePostgresDriver.php

@@ -533,6 +533,8 @@ protected function statement(
             }
 
             if (($conn = $this->getTransactionConn()) !== null && isset($statement)) {
+                // statements cannot be deallocated inside broken transaction block
+                // so statements de-allocation should be delayed until transaction rollback
                 $conn->addStatementToDeallocate($statement);
             }