gecko/mfbt/tests/TestScopeExit.cpp

55 lines
928 B
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/ScopeExit.h"
using mozilla::MakeScopeExit;
#define CHECK(c) \
do { \
bool cond = !!(c); \
MOZ_RELEASE_ASSERT(cond, "Failed assertion: " #c); \
if (!cond) { \
return false; \
} \
} while (false)
static bool
Test()
{
int a = 1;
int b = 1;
{
a++;
auto guardA = MakeScopeExit([&] {
a--;
});
b++;
auto guardB = MakeScopeExit([&] {
b--;
});
guardB.release();
}
CHECK(a == 1);
CHECK(b == 2);
return true;
}
int
main()
{
if (!Test()) {
return 1;
}
return 0;
}