Added/Updated tests\bugs\gh_6807_test.py: Checked on 5.0.0.959

tests/bugs/gh_6807_test.py

@@ -0,0 +1,43 @@
+#coding:utf-8
+
+"""
+ID:          issue-6807
+ISSUE:       https://github.com/FirebirdSQL/firebird/issues/6807
+TITLE:       Regression in FB 4.x : "Unexpected end of command" with incorrect line/column info
+NOTES:
+    [25.02.2023] pzotov
+    COncrete values of line/number are ignored.
+    We pay attention only for these values greater than 0 (see substitution part: "line [1-9]+, column [1-9]+")
+    Checked on 5.0.0.959
+"""
+
+import pytest
+from firebird.qa import *
+
+db = db_factory()
+
+test_script = """
+    recreate table test(id int);
+    insert into test(id) values(null);
+    set term ^;
+    execute block as
+        declare v_id int;
+    begin
+        update test set id = -id returning id as v_id;
+    end
+    ^
+    set term ;^
+"""
+
+act = isql_act('db', test_script, substitutions = [('^((?!Unexpected end of command - line [1-9]+, column [1-9]+|SQLSTATE).)*$', ''), ('[ \t]+', ' '), ('line [1-9]+, column [1-9]+', 'line, column')])
+
+expected_stderr = """
+    Statement failed, SQLSTATE = 42000
+    -Unexpected end of command - line 4, column 44
+"""
+
+@pytest.mark.version('>=5.0')
+def test_1(act: Action):
+    act.expected_stderr = expected_stderr
+    act.execute()
+    assert act.clean_stderr == act.clean_expected_stderr