gecko-dev/mfbt/tests/TestBinarySearch.cpp
Nicholas Nethercote 6c3f5d7b8e Bug 1041914 - Convert the fourth quarter of MFBT to Gecko style. r=Ms2ger.
--HG--
extra : rebase_source : 588fa9c0d1e819e1826835c4ef4a1428a927bf93
2014-07-22 20:54:41 -07:00

81 lines
2.9 KiB
C++

/* -*- 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/Assertions.h"
#include "mozilla/BinarySearch.h"
#include "mozilla/Vector.h"
using mozilla::Vector;
using mozilla::BinarySearch;
struct Person
{
int mAge;
int mId;
Person(int aAge, int aId) : mAge(aAge), mId(aId) {}
};
struct GetAge
{
Vector<Person>& mV;
explicit GetAge(Vector<Person>& aV) : mV(aV) {}
int operator[](size_t index) const { return mV[index].mAge; }
};
int
main()
{
size_t m;
Vector<int> v1;
v1.append(2);
v1.append(4);
v1.append(6);
v1.append(8);
MOZ_RELEASE_ASSERT(!BinarySearch(v1, 0, v1.length(), 1, &m) && m == 0);
MOZ_RELEASE_ASSERT( BinarySearch(v1, 0, v1.length(), 2, &m) && m == 0);
MOZ_RELEASE_ASSERT(!BinarySearch(v1, 0, v1.length(), 3, &m) && m == 1);
MOZ_RELEASE_ASSERT( BinarySearch(v1, 0, v1.length(), 4, &m) && m == 1);
MOZ_RELEASE_ASSERT(!BinarySearch(v1, 0, v1.length(), 5, &m) && m == 2);
MOZ_RELEASE_ASSERT( BinarySearch(v1, 0, v1.length(), 6, &m) && m == 2);
MOZ_RELEASE_ASSERT(!BinarySearch(v1, 0, v1.length(), 7, &m) && m == 3);
MOZ_RELEASE_ASSERT( BinarySearch(v1, 0, v1.length(), 8, &m) && m == 3);
MOZ_RELEASE_ASSERT(!BinarySearch(v1, 0, v1.length(), 9, &m) && m == 4);
MOZ_RELEASE_ASSERT(!BinarySearch(v1, 1, 3, 1, &m) && m == 1);
MOZ_RELEASE_ASSERT(!BinarySearch(v1, 1, 3, 2, &m) && m == 1);
MOZ_RELEASE_ASSERT(!BinarySearch(v1, 1, 3, 3, &m) && m == 1);
MOZ_RELEASE_ASSERT( BinarySearch(v1, 1, 3, 4, &m) && m == 1);
MOZ_RELEASE_ASSERT(!BinarySearch(v1, 1, 3, 5, &m) && m == 2);
MOZ_RELEASE_ASSERT( BinarySearch(v1, 1, 3, 6, &m) && m == 2);
MOZ_RELEASE_ASSERT(!BinarySearch(v1, 1, 3, 7, &m) && m == 3);
MOZ_RELEASE_ASSERT(!BinarySearch(v1, 1, 3, 8, &m) && m == 3);
MOZ_RELEASE_ASSERT(!BinarySearch(v1, 1, 3, 9, &m) && m == 3);
MOZ_RELEASE_ASSERT(!BinarySearch(v1, 0, 0, 0, &m) && m == 0);
MOZ_RELEASE_ASSERT(!BinarySearch(v1, 0, 0, 9, &m) && m == 0);
Vector<int> v2;
MOZ_RELEASE_ASSERT(!BinarySearch(v2, 0, 0, 0, &m) && m == 0);
MOZ_RELEASE_ASSERT(!BinarySearch(v2, 0, 0, 9, &m) && m == 0);
Vector<Person> v3;
v3.append(Person(2, 42));
v3.append(Person(4, 13));
v3.append(Person(6, 360));
#define A(a) MOZ_RELEASE_ASSERT(a)
A(!BinarySearch(GetAge(v3), 0, v3.length(), 1, &m) && m == 0);
A( BinarySearch(GetAge(v3), 0, v3.length(), 2, &m) && m == 0);
A(!BinarySearch(GetAge(v3), 0, v3.length(), 3, &m) && m == 1);
A( BinarySearch(GetAge(v3), 0, v3.length(), 4, &m) && m == 1);
A(!BinarySearch(GetAge(v3), 0, v3.length(), 5, &m) && m == 2);
A( BinarySearch(GetAge(v3), 0, v3.length(), 6, &m) && m == 2);
A(!BinarySearch(GetAge(v3), 0, v3.length(), 7, &m) && m == 3);
return 0;
}