import "@std/mem"
import "@std/testing"

handles_interning test {
    pool := init(mem.c_allocator)
    defer deinit(&pool)

    input [5]mut u8 := ['h', 'e', 'l', 'l', 'o']
    id :: try intern(&pool, input[..])
    duplicate :: try intern(&pool, "hello")
    input[0] = 'j'

    same_id :: get_id(&pool, "hello")
    mutated_id :: get_id(&pool, input[..])
    hello_str :: get_str(&pool, id)
    invalid_str :: get_str(&pool, id + 1)

    try testing.expect_equal(0, id)
    try testing.expect_equal(id, duplicate)
    try testing.expect_equal(id, same_id?)
    try testing.expect_equal(null, mutated_id)
    try testing.expect_equal(null, invalid_str)
    try testing.expect_equal("hello", hello_str?)
}

keeps_independent_pool_ids_local test {
    first := init(mem.c_allocator)
    defer deinit(&first)
    second := init(mem.c_allocator)
    defer deinit(&second)
    hello :: try intern(&first, "hello")
    world :: try intern(&second, "world")
    try testing.expect_equal(hello, world)
    try testing.expect_equal("hello", get_str(&first, hello)?)
    try testing.expect_equal("world", get_str(&second, world)?)
    different :: try intern(&first, "world")
    try testing.expect(different != hello)
    try testing.expect_equal(hello, try intern(&first, "hello"))
    try testing.expect_equal(world, try intern(&second, "world"))
}