mozilla-central/mfbt/tests/TestSmallPointerArray.cpp (file symbol)

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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/SmallPointerArray.h"
#define PTR1 (void*)0x4
#define PTR2 (void*)0x5
#define PTR3 (void*)0x6
// We explicitly test sizes up to 3 here, as that is when SmallPointerArray<>
// switches to the storage method used for larger arrays.
void TestArrayManipulation() {
using namespace mozilla;
SmallPointerArray<void> testArray;
MOZ_RELEASE_ASSERT(testArray.Length() == 0);
MOZ_RELEASE_ASSERT(sizeof(testArray) == 2 * sizeof(void*));
MOZ_RELEASE_ASSERT(!testArray.Contains(PTR1));
testArray.AppendElement(PTR1);
MOZ_RELEASE_ASSERT(testArray.Length() == 1);
MOZ_RELEASE_ASSERT(testArray[0] == PTR1);
MOZ_RELEASE_ASSERT(testArray.ElementAt(0) == PTR1);
MOZ_RELEASE_ASSERT(testArray.Contains(PTR1));
testArray.AppendElement(PTR2);
MOZ_RELEASE_ASSERT(testArray.Length() == 2);
MOZ_RELEASE_ASSERT(testArray[0] == PTR1);
MOZ_RELEASE_ASSERT(testArray.ElementAt(0) == PTR1);
MOZ_RELEASE_ASSERT(testArray[1] == PTR2);
MOZ_RELEASE_ASSERT(testArray.ElementAt(1) == PTR2);
MOZ_RELEASE_ASSERT(testArray.Contains(PTR2));
MOZ_RELEASE_ASSERT(testArray.RemoveElement(PTR1));
MOZ_RELEASE_ASSERT(!testArray.RemoveElement(PTR1));
MOZ_RELEASE_ASSERT(testArray.Length() == 1);
MOZ_RELEASE_ASSERT(testArray[0] == PTR2);
MOZ_RELEASE_ASSERT(testArray.ElementAt(0) == PTR2);
MOZ_RELEASE_ASSERT(!testArray.Contains(PTR1));
testArray.AppendElement(PTR1);
MOZ_RELEASE_ASSERT(testArray.Length() == 2);
MOZ_RELEASE_ASSERT(testArray[0] == PTR2);
MOZ_RELEASE_ASSERT(testArray.ElementAt(0) == PTR2);
MOZ_RELEASE_ASSERT(testArray[1] == PTR1);
MOZ_RELEASE_ASSERT(testArray.ElementAt(1) == PTR1);
MOZ_RELEASE_ASSERT(testArray.Contains(PTR1));
testArray.AppendElement(PTR3);
MOZ_RELEASE_ASSERT(testArray.Length() == 3);
MOZ_RELEASE_ASSERT(testArray[0] == PTR2);
MOZ_RELEASE_ASSERT(testArray.ElementAt(0) == PTR2);
MOZ_RELEASE_ASSERT(testArray[1] == PTR1);
MOZ_RELEASE_ASSERT(testArray.ElementAt(1) == PTR1);
MOZ_RELEASE_ASSERT(testArray[2] == PTR3);
MOZ_RELEASE_ASSERT(testArray.ElementAt(2) == PTR3);
MOZ_RELEASE_ASSERT(testArray.Contains(PTR3));
MOZ_RELEASE_ASSERT(testArray.RemoveElement(PTR1));
MOZ_RELEASE_ASSERT(testArray.Length() == 2);
MOZ_RELEASE_ASSERT(testArray[0] == PTR2);
MOZ_RELEASE_ASSERT(testArray.ElementAt(0) == PTR2);
MOZ_RELEASE_ASSERT(testArray[1] == PTR3);
MOZ_RELEASE_ASSERT(testArray.ElementAt(1) == PTR3);
MOZ_RELEASE_ASSERT(testArray.RemoveElement(PTR2));
MOZ_RELEASE_ASSERT(testArray.Length() == 1);
MOZ_RELEASE_ASSERT(testArray[0] == PTR3);
MOZ_RELEASE_ASSERT(testArray.ElementAt(0) == PTR3);
MOZ_RELEASE_ASSERT(testArray.RemoveElement(PTR3));
MOZ_RELEASE_ASSERT(testArray.Length() == 0);
testArray.Clear();
MOZ_RELEASE_ASSERT(testArray.Length() == 0);
testArray.AppendElement(PTR1);
MOZ_RELEASE_ASSERT(testArray.Length() == 1);
MOZ_RELEASE_ASSERT(testArray[0] == PTR1);
MOZ_RELEASE_ASSERT(testArray.ElementAt(0) == PTR1);
testArray.AppendElement(PTR2);
MOZ_RELEASE_ASSERT(testArray.Length() == 2);
MOZ_RELEASE_ASSERT(testArray[0] == PTR1);
MOZ_RELEASE_ASSERT(testArray.ElementAt(0) == PTR1);
MOZ_RELEASE_ASSERT(testArray[1] == PTR2);
MOZ_RELEASE_ASSERT(testArray.ElementAt(1) == PTR2);
MOZ_RELEASE_ASSERT(testArray.RemoveElement(PTR2));
MOZ_RELEASE_ASSERT(testArray.Length() == 1);
MOZ_RELEASE_ASSERT(testArray[0] == PTR1);
MOZ_RELEASE_ASSERT(testArray.ElementAt(0) == PTR1);
MOZ_RELEASE_ASSERT(!testArray.RemoveElement(PTR3));
MOZ_RELEASE_ASSERT(testArray.Length() == 1);
MOZ_RELEASE_ASSERT(testArray[0] == PTR1);
MOZ_RELEASE_ASSERT(testArray.ElementAt(0) == PTR1);
}
void TestRangeBasedLoops() {
using namespace mozilla;
SmallPointerArray<void> testArray;
void* verification[3];
uint32_t entries = 0;
for (void* test : testArray) {
verification[entries++] = test;
}
MOZ_RELEASE_ASSERT(entries == 0);
testArray.AppendElement(PTR1);
for (void* test : testArray) {
verification[entries++] = test;
}
MOZ_RELEASE_ASSERT(entries == 1);
MOZ_RELEASE_ASSERT(verification[0] == PTR1);
entries = 0;
testArray.AppendElement(PTR2);
for (void* test : testArray) {
verification[entries++] = test;
}
MOZ_RELEASE_ASSERT(entries == 2);
MOZ_RELEASE_ASSERT(verification[0] == PTR1);
MOZ_RELEASE_ASSERT(verification[1] == PTR2);
entries = 0;
testArray.RemoveElement(PTR1);
for (void* test : testArray) {
verification[entries++] = test;
}
MOZ_RELEASE_ASSERT(entries == 1);
MOZ_RELEASE_ASSERT(verification[0] == PTR2);
entries = 0;
testArray.AppendElement(PTR1);
testArray.AppendElement(PTR3);
for (void* test : testArray) {
verification[entries++] = test;
}
MOZ_RELEASE_ASSERT(entries == 3);
MOZ_RELEASE_ASSERT(verification[0] == PTR2);
MOZ_RELEASE_ASSERT(verification[1] == PTR1);
MOZ_RELEASE_ASSERT(verification[2] == PTR3);
entries = 0;
testArray.RemoveElement(PTR1);
testArray.RemoveElement(PTR2);
testArray.RemoveElement(PTR3);
for (void* test : testArray) {
verification[entries++] = test;
}
MOZ_RELEASE_ASSERT(entries == 0);
testArray.Clear();
for (void* test : testArray) {
verification[entries++] = test;
}
MOZ_RELEASE_ASSERT(entries == 0);
}
void TestMove() {
using namespace mozilla;
SmallPointerArray<void> testArray;
testArray.AppendElement(PTR1);
testArray.AppendElement(PTR2);
SmallPointerArray<void> moved = std::move(testArray);
MOZ_RELEASE_ASSERT(testArray.IsEmpty());
MOZ_RELEASE_ASSERT(moved.Length() == 2);
MOZ_RELEASE_ASSERT(moved[0] == PTR1);
MOZ_RELEASE_ASSERT(moved[1] == PTR2);
// Heap case.
moved.AppendElement(PTR3);
SmallPointerArray<void> another = std::move(moved);
MOZ_RELEASE_ASSERT(testArray.IsEmpty());
MOZ_RELEASE_ASSERT(moved.IsEmpty());
MOZ_RELEASE_ASSERT(another.Length() == 3);
MOZ_RELEASE_ASSERT(another[0] == PTR1);
MOZ_RELEASE_ASSERT(another[1] == PTR2);
MOZ_RELEASE_ASSERT(another[2] == PTR3);
// Move assignment.
testArray = std::move(another);
MOZ_RELEASE_ASSERT(moved.IsEmpty());
MOZ_RELEASE_ASSERT(another.IsEmpty());
MOZ_RELEASE_ASSERT(testArray.Length() == 3);
MOZ_RELEASE_ASSERT(testArray[0] == PTR1);
MOZ_RELEASE_ASSERT(testArray[1] == PTR2);
MOZ_RELEASE_ASSERT(testArray[2] == PTR3);
}
int main() {
TestArrayManipulation();
TestRangeBasedLoops();
TestMove();
return 0;
}