TestEnumeratedArray.cpp

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/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */

/* vim: set ts=8 sts=2 et sw=2 tw=80: */

/* This Source Code Form is subject to the terms of the Mozilla Public

 * License, v. 2.0. If a copy of the MPL was not distributed with this file,

 * You can obtain one at http://mozilla.org/MPL/2.0/. */

#include "mozilla/ArrayUtils.h"

#include "mozilla/EnumeratedArray.h"

#include "mozilla/EnumTypeTraits.h"

using mozilla::EnumeratedArray;

enum class AnimalSpecies { Cow, Sheep, Pig };

template <>

struct mozilla::MaxContiguousEnumValue<AnimalSpecies> {

  static constexpr AnimalSpecies value = AnimalSpecies::Pig;

};

using TestArray = EnumeratedArray<AnimalSpecies, int>;

void TestInitialValueByConstructor() {

  // Style 1

  TestArray headCount(1, 2, 3);

  MOZ_RELEASE_ASSERT(mozilla::ArrayLength(headCount) == 3);

  MOZ_RELEASE_ASSERT(headCount[AnimalSpecies::Cow] == 1);

  MOZ_RELEASE_ASSERT(headCount[AnimalSpecies::Sheep] == 2);

  MOZ_RELEASE_ASSERT(headCount[AnimalSpecies::Pig] == 3);

  // Style 2

  TestArray headCount2{5, 6, 7};

  MOZ_RELEASE_ASSERT(headCount2[AnimalSpecies::Cow] == 5);

  MOZ_RELEASE_ASSERT(headCount2[AnimalSpecies::Sheep] == 6);

  MOZ_RELEASE_ASSERT(headCount2[AnimalSpecies::Pig] == 7);

  // Style 3

  TestArray headCount3({8, 9, 10});

  MOZ_RELEASE_ASSERT(headCount3[AnimalSpecies::Cow] == 8);

  MOZ_RELEASE_ASSERT(headCount3[AnimalSpecies::Sheep] == 9);

  MOZ_RELEASE_ASSERT(headCount3[AnimalSpecies::Pig] == 10);

void TestAssignment() {

  TestArray headCount{8, 9, 10};

  TestArray headCount2;

  headCount2 = headCount;

  MOZ_RELEASE_ASSERT(headCount2[AnimalSpecies::Cow] == 8);

  MOZ_RELEASE_ASSERT(headCount2[AnimalSpecies::Sheep] == 9);

  MOZ_RELEASE_ASSERT(headCount2[AnimalSpecies::Pig] == 10);

int main() {

  TestInitialValueByConstructor();

  TestAssignment();

  return 0;