testMem.cc

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/*
 * Copyright (C) 1996-2025 The Squid Software Foundation and contributors
 *
 * Squid software is distributed under GPLv2+ license and includes
 * contributions from numerous individuals and organizations.
 * Please see the COPYING and CONTRIBUTORS files for details.
 */
 
#include "squid.h"
#include "compat/cppunit.h"
#include "mem/Allocator.h"
#include "mem/Pool.h"
#include "unitTestMain.h"
 
#include <iostream>
#include <stdexcept>
 
class TestMem : public CPPUNIT_NS::TestFixture
{
    CPPUNIT_TEST_SUITE(TestMem);
    /* note the statement here and then the actual prototype below */
    CPPUNIT_TEST(testMemPool);
    CPPUNIT_TEST(testMemProxy);
    CPPUNIT_TEST_SUITE_END();
 
public:
protected:
    void testMemPool();
    void testMemProxy();
};
CPPUNIT_TEST_SUITE_REGISTRATION(TestMem);
 
class SomethingToAlloc
{
public:
    int aValue;
};
 
class MoreToAlloc
{
    MEMPROXY_CLASS(MoreToAlloc);
 
public:
    int aValue = 0;
};
 
void
TestMem::testMemPool()
{
    const auto Pool = memPoolCreate("Test Pool", sizeof(SomethingToAlloc));
    CPPUNIT_ASSERT(Pool);
 
    auto *something = static_cast<SomethingToAlloc *>(Pool->alloc());
    CPPUNIT_ASSERT(something);
    CPPUNIT_ASSERT_EQUAL(something->aValue, 0);
    something->aValue = 5;
    Pool->freeOne(something);
 
    // Pool should use the FreeList to allocate next object
    auto *otherthing = static_cast<SomethingToAlloc *>(Pool->alloc());
    CPPUNIT_ASSERT_EQUAL(otherthing, something);
    CPPUNIT_ASSERT_EQUAL(otherthing->aValue, 0);
    Pool->freeOne(otherthing);
 
    delete Pool;
}
 
void
TestMem::testMemProxy()
{
    auto *something = new MoreToAlloc;
    CPPUNIT_ASSERT(something);
    CPPUNIT_ASSERT_EQUAL(something->aValue, 0);
    something->aValue = 5;
    delete something;
 
    // The MEMPROXY pool should use its FreeList to allocate next object
    auto *otherthing = new MoreToAlloc;
    CPPUNIT_ASSERT_EQUAL(otherthing, something);
    CPPUNIT_ASSERT_EQUAL(otherthing->aValue, 0);
}
 
int
main(int argc, char *argv[])
{
    return TestProgram().run(argc, argv);
}