tests: minor fixes

Author: gsmolk

tests/backup.py

@@ -1159,7 +1159,7 @@ def test_sigint_handling(self):
         gdb.remove_all_breakpoints()
 
         gdb._execute('signal SIGINT')
-        # gdb.continue_execution_until_exit()
+        gdb.continue_execution_until_error()
 
         backup_id = self.show_pb(backup_dir, 'node')[0]['id']
 
@@ -1197,7 +1197,7 @@ def test_sigterm_handling(self):
         gdb.remove_all_breakpoints()
 
         gdb._execute('signal SIGTERM')
-        gdb.continue_execution_until_exit()
+        gdb.continue_execution_until_error()
 
         backup_id = self.show_pb(backup_dir, 'node')[0]['id']
 
@@ -1235,7 +1235,7 @@ def test_sigquit_handling(self):
         gdb.remove_all_breakpoints()
 
         gdb._execute('signal SIGQUIT')
-        gdb.continue_execution_until_exit()
+        gdb.continue_execution_until_error()
 
         backup_id = self.show_pb(backup_dir, 'node')[0]['id']