Added import DatabaseError needed to proper handlingog possible exception

Author: pavel-zotov

tests/bugs/core_0203_test.py

@@ -28,6 +28,7 @@
 
 import pytest
 from firebird.qa import *
+from firebird.driver import DatabaseError
 
 init_script = """
     set bail on;

tests/bugs/core_1549_test.py

@@ -18,6 +18,7 @@
 
 import pytest
 from firebird.qa import *
+from firebird.driver import DatabaseError
 
 init_script = """
     recreate table t(id int);

tests/bugs/core_4285_test.py

@@ -18,6 +18,7 @@
 
 import pytest
 from firebird.qa import *
+from firebird.driver import DatabaseError
 
 init_script = """
     set bail on;

tests/bugs/core_4921_test.py

@@ -23,6 +23,7 @@
 
 import pytest
 from firebird.qa import *
+from firebird.driver import DatabaseError
 
 init_script = """
     create or alter view v_test as select 1 id from rdb$database;

tests/bugs/core_5020_test.py

@@ -22,6 +22,7 @@
 
 import pytest
 from firebird.qa import *
+from firebird.driver import DatabaseError
 
 init_sql = """
     recreate table zf(

tests/bugs/core_5070_test.py

@@ -17,6 +17,7 @@
 
 import pytest
 from firebird.qa import *
+from firebird.driver import DatabaseError
 
 init_script = """
     recreate table test1 (

tests/bugs/core_5501_test.py

@@ -76,7 +76,7 @@
 from difflib import unified_diff
 from struct import unpack_from
 from firebird.qa import *
-from firebird.driver import Connection
+from firebird.driver import Connection, DatabaseError
 
 ###########################
 ###   S E T T I N G S   ###

tests/bugs/gh_6992_test.py

@@ -15,6 +15,7 @@
 
 import pytest
 from firebird.qa import *
+from firebird.driver import DatabaseError
 
 init_script = """
     set bail on;

tests/bugs/gh_8429_test.py

@@ -45,7 +45,8 @@
 
 import pytest
 from firebird.qa import *
-from firebird.driver import create_database, ShutdownMode, ShutdownMethod
+from firebird.driver import create_database, ShutdownMode, ShutdownMethod, DatabaseError
+
 
 ###########################
 ###   S E T T I N G S   ###