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

describe(ConstArray.name, () => {
  test('serialize, Number', () => {
    const expected = filledDataView([
      0x3F, 0xF0, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
      0x40, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
    ])
    let dv = sizedDataView(15)
    expect(() => serialize(dv, [1, 2], ConstArray(2), Number)).toThrow()

    dv = sizedDataView(sizeof(ConstArray(2), Number))
    expect(16).toEqual(dv.byteLength)

    serialize(dv, [1, 2], ConstArray(2), Number)
    expectDataViewEqual(dv, expected)
  })

  test('parse, Number', () => {
    const expected = [1, 2]
    const dv = filledDataView([
      0x3F, 0xF0, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
      0x40, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
    ])
    const actual = parse(dv, ConstArray(2), Number)
    expectDataViewEqual(actual, expected)
  })

  test('sizeof', () => {
    expect(sizeofHead(ConstArray(2), Number)).toEqual(16)
  })
})