Added/Updated tests\bugs\gh_5537_test.py: Checked on 3.0.13.33794, 4.0.6.3165, 5.0.2.1553, 6.0.0.520

tests/bugs/gh_5537_test.py

@@ -0,0 +1,38 @@
+#coding:utf-8
+
+"""
+ID:          issue-5537
+ISSUE:       https://github.com/FirebirdSQL/firebird/issues/5537
+TITLE:       Non US-ASCII field names treated as unicode, although charset non-unicode, lowering max field length [CORE5258]
+DESCRIPTION:
+NOTES:
+    [09.11.2024] pzotov
+    FB-3.x must raise "Name longer than database column size", all others must work fine.
+    Checked on 3.0.13.33794, 4.0.6.3165, 5.0.2.1553, 6.0.0.520
+"""
+from pathlib import Path
+import pytest
+from firebird.qa import *
+
+db = db_factory()
+act = python_act('db', substitutions = [(r'After line \d+ .*', '')])
+tmp_file = temp_file('tmp_5537.sql')
+
+@pytest.mark.intl
+@pytest.mark.version('>=3')
+def test_1(act: Action, tmp_file: Path):
+    
+    NON_ASCII_TXT = 'Поле в 26 символов!'
+    tmp_file.write_bytes(f"""set list on; select '' as "{NON_ASCII_TXT}" from rdb$database;""".encode('cp1251'))
+
+    expected_3x = """
+        Statement failed, SQLSTATE = 42000
+        Dynamic SQL Error
+        -SQL error code = -104
+        -Name longer than database column size
+    """
+    expected_4x = f"{NON_ASCII_TXT}"
+
+    act.expected_stdout = expected_3x if act.is_version('<4') else expected_4x
+    act.isql(switches = ['-q'], input_file = tmp_file, charset = 'win1251', io_enc = 'cp1251', combine_output = True)
+    assert act.clean_stdout == act.clean_expected_stdout