Added/Updated tests\bugs\gh_7823_test.py: Checked on 6.0.0.223

Author: pavel-zotov

tests/bugs/gh_7823_test.py

@@ -0,0 +1,61 @@
+#coding:utf-8
+
+"""
+ID:          issue-7823
+ISSUE:       https://github.com/FirebirdSQL/firebird/issues/7823
+TITLE:       ISQL command SHOW DATABASE crashes in absence of firebird.msg
+NOTES:
+    [24.01.2024] pzotov
+    Test implemented only for Windows.
+    Confirmed bug on 6.0.0.222: ISQL crashes after 'show database' and further statements are not executed.
+    Checked on 6.0.0.223 - all fine.
+"""
+import shutil
+import subprocess
+from pathlib import Path
+import pytest
+from firebird.qa import *
+
+db = db_factory()
+act = python_act('db', substitutions = [('^((?!(SUCCESS_MSG)).)*$', ''), ('[ \t]+', ' ')])
+
+expected_stdout = """
+    SUCCESS_MSG Ok
+"""
+
+tmp_isql = temp_file('isql.exe')
+tmp_clnt = temp_file('fbclient.dll')
+tmp_sql = temp_file('check.sql')
+tmp_log = temp_file('check.log')
+
+@pytest.mark.version('>=6.0')
+@pytest.mark.platform('Windows')
+def test_1(act: Action, tmp_isql: Path, tmp_clnt: Path, tmp_sql: Path, tmp_log: Path, capsys):
+    print(Path(act.vars['bin-dir'],'isql.exe'))
+    print(tmp_isql)
+    shutil.copy2(Path(act.vars['bin-dir'],'isql.exe'), tmp_isql)
+    shutil.copy2(Path(act.vars['bin-dir'],'fbclient.dll'), tmp_clnt)
+
+    #cmd_isql = [str(tmp_isql), act.db.dsn, '-user', act.db.user, '-pas', act.db.password, '-i', str(tmp_sql)]
+    cmd_isql = [str(tmp_isql), act.vars['host']+'/'+act.vars['port']+':'+str(act.db.db_path), '-user', act.db.user, '-pas', act.db.password, '-i', str(tmp_sql)]
+    cmd_line = ' '.join(cmd_isql)
+    sql_text = f"""
+        -- {cmd_line}
+        set list on;
+        -- this cased crash of ISQL:
+        show database;
+        -- this was not executed before fix:
+        select 'Ok' as success_msg from rdb$database;
+    """
+    tmp_sql.write_text(sql_text)
+
+    with open(tmp_log, 'w') as f:
+        subprocess.run( cmd_isql, stdout = f, stderr = subprocess.STDOUT)
+    
+    with open(tmp_log, 'r') as f:
+        for line in f:
+            print(line)
+
+    act.expected_stdout = expected_stdout
+    act.stdout = capsys.readouterr().out
+    assert act.clean_stdout == act.clean_expected_stdout