import { describe, expect, test } from "vitest";
import { expectDataViewEqual } from '.';
import { filledDataView, sizedDataView } from '../src'
import { Int, parse, serialize, sizeof } from "../src";

describe(Int.name, () => {

  const Type = Int(32, 'unsigned')
  const type = 512
  const type_dv = filledDataView([0x00, 0x00, 0x02, 0x00])

  test('serialize', () => {
    let actual = sizedDataView(3);
    expect(() => serialize(actual, type, Type)).toThrow()

    actual = sizedDataView(sizeof(Type))
    serialize(actual, type, Type)

    expectDataViewEqual(actual, type_dv)
  })

  test('parse', () => {
    expect(parse(type_dv, Type)).toEqual(type)
  })

  test('serialize, overflow', () => {
    expect(() => serialize(sizedDataView(1), 128, Int(8, 'signed'))).toThrow()
    expect(() => serialize(sizedDataView(1), -129, Int(8, 'signed'))).toThrow()
  })
})