Added/Updated tests\bugs\gh_8618_test.py: Checked on 6.0.0.1020

Author: pavel-zotov

tests/bugs/gh_8618_test.py

@@ -0,0 +1,91 @@
+#coding:utf-8
+
+"""
+ID:          n/a
+ISSUE:       https://github.com/FirebirdSQL/firebird/issues/8618
+TITLE:       Extra quotes in plan when using UNLIST function
+DESCRIPTION:
+NOTES:
+    [17.07.2025] pzotov
+    Confirmed problem on 6.0.0.845.
+    Checked on 6.0.0.1020
+"""
+
+import pytest
+from firebird.qa import *
+from firebird.driver import DatabaseError
+
+db = db_factory()
+
+act = python_act('db')
+
+#-----------------------------------------------------------
+
+def replace_leading(source, char="."):
+    stripped = source.lstrip()
+    return char * (len(source) - len(stripped)) + stripped
+
+#-----------------------------------------------------------
+
+@pytest.mark.version('>=6')
+def test_1(act: Action, capsys):
+
+    qry_list = (
+        "select count(*) from unlist('1,2,3') as system(n)"
+        ,"select count(*) from unlist('1,2,3') as public(n)"
+        ,'''select count(*) as """" from unlist('1,2,3') as """"(n)'''
+    )
+
+    with act.db.connect() as con:
+        cur = con.cursor()
+        for test_sql in qry_list:
+            ps, rs =  None, None
+            try:
+                cur = con.cursor()
+                ps = cur.prepare(test_sql)
+                print(test_sql)
+                # Print explained plan with padding eash line by dots in order to see indentations:
+                print( '\n'.join([replace_leading(s) for s in ps.detailed_plan.split('\n')]) )
+
+                # ::: NB ::: 'ps' returns data, i.e. this is SELECTABLE expression.
+                # We have to store result of cur.execute(<psInstance>) in order to
+                # close it explicitly.
+                # Otherwise AV can occur during Python garbage collection and this
+                # causes pytest to hang on its final point.
+                # Explained by hvlad, email 26.10.24 17:42
+                rs = cur.execute(ps)
+                cur_cols = cur.description
+                for r in rs:
+                    for i in range(0,len(cur_cols)):
+                        print( cur_cols[i][0], ':', r[i] )
+
+            except DatabaseError as e:
+                print(e.__str__())
+                print(e.gds_codes)
+            finally:
+                if rs:
+                    rs.close() # <<< EXPLICITLY CLOSING CURSOR RESULTS
+                if ps:
+                    ps.free()
+
+    act.expected_stdout = f'''
+        {qry_list[0]}
+        Select Expression
+        ....-> Aggregate
+        ........-> Function "UNLIST" as "SYSTEM" Scan
+        COUNT : 3
+
+        {qry_list[1]}
+        Select Expression
+        ....-> Aggregate
+        ........-> Function "UNLIST" as "PUBLIC" Scan
+        COUNT : 3
+
+        {qry_list[2]}
+        Select Expression
+        ....-> Aggregate
+        ........-> Function "UNLIST" as """" Scan
+        " : 3
+    '''
+    act.stdout = capsys.readouterr().out
+    assert act.clean_stdout == act.clean_expected_stdout