Added/Updated tests\functional\table\alter\test_10.py: Removed SHOW command for check result because its output often changes. It is enough for this test to obtain similar data from RDB tables. Created view and stored function to obtain type name by rdb$fields.rdb$field_type and .rdb$field_sub_type.

tests/functional/table/alter/test_10.py

@@ -5,30 +5,44 @@ ID:          table.alter-10
 TITLE:       ALTER TABLE - DROP CONSTRAINT - PRIMARY KEY
 DESCRIPTION:
 FBTEST:      functional.table.alter.10
+NOTES:
+    [06.10.2023] pzotov
+    Removed SHOW command. It is enough to check that we can add duplicate values in the table w/o PK.
 """
 
 import pytest
 from firebird.qa import *
 
-init_script = """CREATE TABLE test( id INTEGER NOT NULL CONSTRAINT pk PRIMARY KEY,
-                   text VARCHAR(32));
-commit;
-"""
+db = db_factory(charset = 'utf8')
 
-db = db_factory(init=init_script)
+test_script = """
+    set bail on;
+    set list on;
+    create table test(id int, constraint test_pk primary key(id));
+    alter table test drop constraint test_pk;
+    commit;
+    insert into test(id) values(1);
+    insert into test(id) values(1);
+    commit;
+    -- this must show two records with the same value:
+    select * from test;
+    commit;
 
-test_script = """ALTER TABLE test DROP CONSTRAINT pk;
-SHOW TABLE test;
+    -- thist must FAIL because NOT NULL still active for ID:
+    insert into test(id) values(null);
 """
 
 act = isql_act('db', test_script)
 
-expected_stdout = """ID                              INTEGER Not Null
-TEXT                            VARCHAR(32) Nullable
+expected_stdout = """
+    ID                              1
+    ID                              1
+    Statement failed, SQLSTATE = 23000
+    validation error for column "TEST"."ID", value "*** null ***"
 """
 
-@pytest.mark.version('>=3.0')
+@pytest.mark.version('>=3')
 def test_1(act: Action):
     act.expected_stdout = expected_stdout
-    act.execute()
+    act.execute(combine_output = True)
     assert act.clean_stdout == act.clean_expected_stdout