setup
{
  DROP TABLE IF EXISTS foo;
  CREATE TABLE foo (
	key		int PRIMARY KEY,
	value	int
  );

  INSERT INTO foo VALUES (1, 1);
}

teardown
{
  DROP TABLE foo;
}

session "s1"
setup { SET log_lock_waits = on; SET client_min_messages = LOG; }
step "s1-update"	{ BEGIN; UPDATE foo SET value = 2; }
step "s1-commit"	{ SELECT pg_sleep(1.5); COMMIT; }

session "s2"
setup { SET log_lock_waits = on; SET client_min_messages = LOG; BEGIN; }
step "s2-update"	{ UPDATE foo SET value = 3; }
teardown { ROLLBACK; }

permutation "s1-update" "s2-update" "s1-commit"