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# If transaction A holds a lock, and transaction B does an update,
# make sure we don't forget the lock if B aborts.
setup
{
CREATE TABLE dont_forget (
value int
);
INSERT INTO dont_forget VALUES (1);
}
teardown
{
DROP TABLE dont_forget;
}
session "s1"
setup { BEGIN; }
step "s1_show" { SELECT current_setting('default_transaction_isolation') <> 'read committed'; }
step "s1_lock" { SELECT * FROM dont_forget FOR KEY SHARE; }
step "s1_commit" { COMMIT; }
session "s2"
setup { BEGIN; }
step "s2_update" { UPDATE dont_forget SET value = 2; }
step "s2_abort" { ROLLBACK; }
step "s2_commit" { COMMIT; }
session "s3"
# try cases with both a non-conflicting lock with s1's and a conflicting one
step "s3_forkeyshr" { SELECT * FROM dont_forget FOR KEY SHARE; }
step "s3_fornokeyupd" { SELECT * FROM dont_forget FOR NO KEY UPDATE; }
step "s3_forupd" { SELECT * FROM dont_forget FOR UPDATE; }
permutation "s1_show" "s1_commit" "s2_commit"
permutation "s1_lock" "s2_update" "s2_abort" "s3_forkeyshr" "s1_commit"
permutation "s1_lock" "s2_update" "s2_commit" "s3_forkeyshr" "s1_commit"
permutation "s1_lock" "s2_update" "s1_commit" "s3_forkeyshr" "s2_commit"
permutation "s1_lock" "s2_update" "s2_abort" "s3_fornokeyupd" "s1_commit"
permutation "s1_lock" "s2_update" "s2_commit" "s3_fornokeyupd" "s1_commit"
permutation "s1_lock" "s2_update" "s1_commit" "s3_fornokeyupd" "s2_commit"
permutation "s1_lock" "s2_update" "s2_abort" "s3_forupd" "s1_commit"
permutation "s1_lock" "s2_update" "s2_commit" "s3_forupd" "s1_commit"
permutation "s1_lock" "s2_update" "s1_commit" "s3_forupd" "s2_commit"
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