setup
{
    CREATE TABLE test_insert_concurrency (a int, b int) USING columnar;

    CREATE OR REPLACE FUNCTION columnar_relation_storageid(relid oid) RETURNS bigint
        LANGUAGE C STABLE STRICT
        AS 'citus', $$columnar_relation_storageid$$;
}

teardown
{
    DROP TABLE IF EXISTS test_insert_concurrency CASCADE;
}

session "s1"

step "s1-begin"
{
    BEGIN;
}

step "s1-insert"
{
    INSERT INTO test_insert_concurrency SELECT i, 2 * i FROM generate_series(1, 3) i;
}

step "s1-insert-10000-rows"
{
    INSERT INTO test_insert_concurrency SELECT i, 2 * i FROM generate_series(1, 10000) i;
}

step "s1-copy"
{
    COPY test_insert_concurrency(a) FROM PROGRAM 'seq 11 13';
}

step "s1-select"
{
    SELECT * FROM test_insert_concurrency ORDER BY a;
}

step "s1-truncate"
{
    TRUNCATE test_insert_concurrency;
}

step "s1-commit"
{
    COMMIT;
}

session "s2"

step "s2-begin"
{
    BEGIN;
}

step "s2-begin-repeatable"
{
    BEGIN TRANSACTION ISOLATION LEVEL REPEATABLE READ;
}

step "s2-insert"
{
    INSERT INTO test_insert_concurrency SELECT i, 2 * i FROM generate_series(4, 6) i;
}

step "s2-select"
{
    SELECT * FROM test_insert_concurrency ORDER BY a;
}

step "s2-commit"
{
    COMMIT;
}

// writes shouldn't block writes or reads
permutation "s1-begin" "s2-begin" "s1-insert" "s2-insert" "s1-select" "s2-select" "s1-commit" "s2-commit" "s1-select"

// copy vs insert
permutation "s1-begin" "s2-begin" "s1-copy" "s2-insert" "s1-select" "s2-select" "s1-commit" "s2-commit" "s1-select"

// insert vs copy
permutation "s1-begin" "s2-begin" "s2-insert" "s1-copy" "s1-select" "s2-select" "s1-commit" "s2-commit" "s1-select"

permutation "s1-truncate" "s1-begin" "s1-insert-10000-rows" "s2-begin" "s2-insert" "s2-commit" "s1-commit"

permutation "s1-begin" "s2-begin-repeatable" "s1-insert" "s2-insert" "s2-select" "s1-commit" "s2-select" "s2-commit"