#coding:utf-8

"""
ID:          issue-1306
ISSUE:       1306
TITLE:       Server crash on violation of NOT NULL constraint
DESCRIPTION:
JIRA:        CORE-907
FBTEST:      bugs.core_0907
"""

import pytest
from firebird.qa import *

init_script = """
    recreate table crash (a1 integer,a2 integer,a3 integer, a4 integer) ;
    commit;
    insert into crash (a1, a2, a3, a4) values ( 1, 2, 3, 4);
    insert into crash (a1, a2, a3    ) values ( 2, 3, 4   );
    insert into crash (a1, a2,     a4) values ( 2, 3,    4);
    commit;
    alter table crash add a5 computed by (a2*a3*a4);
    commit;
"""

db = db_factory(init=init_script)

test_script = """
    -- Since 3.0 one may do like this (and NOT by updating RDB tables):
    -- ALTER TABLE <table name> ALTER <field name> [NOT] NULL
    -- ALTER DOMAIN <domain name> [NOT] NULL
    -- :::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::
    -- 02.04.2015: since rev. 61204 (build 3.0.0.31767)syntax of altering nullability for
    -- domains and tables has been changed: mandatory SET | DROP clause now needed, i.e.:
    -- ALTER TABLE <table name> ALTER <field name> {DROP | SET} NOT NULL
    -- ALTER DOMAIN <domain name> {DROP | SET} NOT NULL
    -- :::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::

    -- This attempt will FAIL with message:
    -- -Cannot make field A5 of table CRASH NOT NULL because there are NULLs present
    alter table crash alter a5 SET not null;
    commit;

    update crash set a3=1 where a3 is null;
    update crash set a4=1 where a4 is null;
    commit;

    alter table crash alter a1 SET not null;
    alter table crash alter a2 SET not null;
    alter table crash alter a3 SET not null;
    alter table crash alter a4 SET not null;
    alter table crash alter a5 SET not null;
    commit;
    update crash set a1=null, a2=null, a3=null,a4=null rows 1;
    commit;
    show table crash;
"""

act = isql_act('db', test_script)

expected_stdout = """
    A1                              INTEGER Not Null
    A2                              INTEGER Not Null
    A3                              INTEGER Not Null
    A4                              INTEGER Not Null
    A5                              Computed by: (a2*a3*a4)
"""

expected_stderr = """
    Statement failed, SQLSTATE = 22006
    unsuccessful metadata update
    -Cannot make field A5 of table CRASH NOT NULL because there are NULLs present
    Statement failed, SQLSTATE = 23000
    validation error for column "CRASH"."A1", value "*** null ***"
"""

@pytest.mark.version('>=3.0')
def test_1(act: Action):
    act.expected_stdout = expected_stdout
    act.expected_stderr = expected_stderr
    act.execute()
    assert (act.clean_stderr == act.clean_expected_stderr and
            act.clean_stdout == act.clean_expected_stdout)