Added/Updated tests\functional\tabloid\test_crash_when_too_long_username_for_auth.py: see notes

tests/functional/tabloid/test_crash_when_too_long_username_for_auth.py

@@ -0,0 +1,40 @@
+#coding:utf-8
+
+"""
+TITLE:       crash on assert or memory corruption when too long username is used for authentication
+NOTES:
+    [19.07.2023] pzotov
+    Confirmed problem on 3.x only (3.0.11.33690).
+    FB 4.0.3.2956 and 5.0.0.1093 (builds before 29-JUN-2023) issued "SQLSTATE = 28000 / Your user name and password..." but not crashed.
+    After fix, all three FB issue "SQLSTATE = 08006 / Error occurred during login, please check server firebird.log for details"
+    Checked on 3.0.11.33965 -- all OK.
+"""
+import locale
+import re
+from difflib import unified_diff
+
+import pytest
+from firebird.qa import *
+
+db = db_factory() # charset = 'utf8', init = init_sql)
+
+act = python_act( 'db', substitutions=[('[ \t]+',' ')] )
+
+@pytest.mark.version('>=3.0.11')
+def test_1(act: Action, capsys):
+
+    MAX_NAME_LEN = 31 if act.is_version('<=3') else 63
+    TOO_LONG_USR = 'u1111111111222222222233333333334444444444555555555566666666667777777777'
+    test_sql = f"""
+        connect '{act.db.dsn}' user '{TOO_LONG_USR}' password 'qqq';
+        quit;
+    """
+
+    expected_stdout = """
+        Statement failed, SQLSTATE = 08006
+        Error occurred during login, please check server firebird.log for details
+    """
+
+    act.expected_stdout = expected_stdout
+    act.isql(switches=['-q'], charset = 'win1251', credentials = False, connect_db = False, input = test_sql, combine_output = True, io_enc = locale.getpreferredencoding())
+    assert act.clean_stdout == act.clean_expected_stdout