portable_compare.test.ts

// Copyright Amazon.com Inc. or its affiliates. All Rights Reserved.
// SPDX-License-Identifier: Apache-2.0

/* eslint-env mocha */

import { expect } from 'chai'
import { compare } from '../src/portable_compare'

describe('compare', () => {
  const a = new Uint8Array([0, 0])
  const b = new Uint8Array([1, 0])
  const c = new Uint8Array([0, 1])
  const d = new Uint8Array([1])
  const e = new Uint8Array([0])
  it('a == a', () => {
    expect(compare(a, a)).to.equal(0)
  })
  it('b > a', () => {
    expect(compare(b, a)).to.equal(1)
  })
  it('a < b', () => {
    expect(compare(a, b)).to.equal(-1)
  })
  it('c > a', () => {
    expect(compare(c, a)).to.equal(1)
  })
  it('a < c', () => {
    expect(compare(a, c)).to.equal(-1)
  })
  it('d > a', () => {
    expect(compare(d, a)).to.equal(1)
  })
  it('a < d', () => {
    expect(compare(a, d)).to.equal(-1)
  })
  it('b > d', () => {
    expect(compare(b, d)).to.equal(1)
  })
  it('d < b', () => {
    expect(compare(d, b)).to.equal(-1)
  })
  it('a > e', () => {
    expect(compare(a, e)).to.equal(1)
  })
  it('e < a', () => {
    expect(compare(e, a)).to.equal(-1)
  })
})