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// -*- Mode: C++; tab-width:2; indent-tabs-mode: nil; c-basic-offset: 2 -*-
// vi:tw=80:et:ts=2:sts=2
//
// -----------------------------------------------------------------------
//
// This file is part of RLVM, a RealLive virtual machine clone.
//
// -----------------------------------------------------------------------
//
// Copyright (C) 2007 Elliot Glaysher
//
// This program is free software; you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation; either version 3 of the License, or
// (at your option) any later version.
//
// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU General Public License for more details.
//
// You should have received a copy of the GNU General Public License
// along with this program; if not, write to the Free Software
// Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA.
//
// -----------------------------------------------------------------------
#include "gtest/gtest.h"
#include <boost/archive/text_iarchive.hpp>
#include <boost/archive/text_oarchive.hpp>
#include <boost/serialization/export.hpp>
#include <boost/serialization/tracking.hpp>
#include "utilities/lazy_array.h"
#include "test_utils.h"
#include <iostream>
#include <algorithm>
using namespace std;
const int SIZE = 10;
class LazyArrayTest : public ::testing::Test {
public:
// Helper class because boost::serialization doesn't like the
// concept of serializing an int*
class IntWrapper {
private:
friend class boost::serialization::access;
template <class Archive>
void serialize(Archive& ar, const unsigned int version) {
ar& num;
}
int num;
public:
IntWrapper() : num(0) {}
IntWrapper& operator=(int in) {
num = in;
return *this;
}
operator int() const { return num; }
};
protected:
template <typename T>
void populateIntArray(T& lazyArray) {
// Set each even slot to its number
for (int i = 0; i < SIZE; ++i)
if (i % 2 == 0)
lazyArray[i] = i;
}
template <typename T>
void checkArray(LazyArray<T>& in) {
// iterating across everything; every other cell should report
// being unallocated
FullLazyArrayIterator<T> it = in.full_begin();
FullLazyArrayIterator<T> end = in.full_end();
for (int i = 0; it != end && i < SIZE; ++it, ++i) {
if (it.pos() % 2 == 0) {
EXPECT_TRUE(it.valid()) << "Invalid in valid position";
EXPECT_EQ(i, it.pos()) << "Pointing to correct item";
EXPECT_EQ(i, *it) << "Correct value";
} else {
EXPECT_FALSE(it.valid()) << "Valid in invalid position";
}
}
}
};
// -----------------------------------------------------------------------
BOOST_CLASS_EXPORT(LazyArrayTest::IntWrapper);
BOOST_CLASS_TRACKING(LazyArrayTest::IntWrapper,
boost::serialization::track_always);
// -----------------------------------------------------------------------
TEST_F(LazyArrayTest, EmptyArray) {
// Empty lazy arrays should simply set size
LazyArray<int> lazyArray(SIZE);
EXPECT_EQ(SIZE, lazyArray.size()) << "Lazy Array didn't remember its size";
EXPECT_TRUE(lazyArray.begin() == lazyArray.end())
<< "Allocated Lazy iterator is valid on an empty array";
// iterating across everything; each cell should report being unallocated
FullLazyArrayIterator<int> it = lazyArray.full_begin();
FullLazyArrayIterator<int> end = lazyArray.full_end();
for (; it != end; ++it) {
EXPECT_FALSE(it.valid())
<< "LazyArray with no items says something is valid";
}
}
TEST_F(LazyArrayTest, AllozatedLazyArrayIterator) {
LazyArray<int> lazyArray(SIZE);
EXPECT_EQ(SIZE, lazyArray.size()) << "Lazy Array didn't remember its size";
populateIntArray(lazyArray);
checkArray(lazyArray);
// Test to make sure that when we use AllocatedLazyArrayIterator, we
// only stop on items that are valid.
AllocatedLazyArrayIterator<int> ait = lazyArray.begin();
AllocatedLazyArrayIterator<int> aend = lazyArray.end();
EXPECT_TRUE(ait != aend)
<< "Allocated Lazy iterator is invalid on an array with items in it";
for (int i = 0; ait != aend && i < SIZE; ++ait, i += 2) {
EXPECT_EQ(0, ait.pos() % 2) << "Stopped on invalid item!";
EXPECT_EQ(i, *ait) << "Correct value";
}
}
TEST_F(LazyArrayTest, BothIterators) {
// Allocate even objects and then these
LazyArray<int> lazyArray(SIZE);
EXPECT_EQ(SIZE, lazyArray.size()) << "Lazy Array didn't remember its size";
// Go through each item in the array (by FullLazyArrayIterator) and
// set the values.
FullLazyArrayIterator<int> it = lazyArray.full_begin();
FullLazyArrayIterator<int> end = lazyArray.full_end();
for (int i = 0; it != end && i < SIZE; ++it, ++i) {
EXPECT_FALSE(it.valid()) << "Position starts off invalid.";
*it = i;
EXPECT_TRUE(it.valid()) << "Position ends up valid after writing.";
}
// Now we should be able to iterate across all the items with
// AllocatedLazyArrayIterator, and make sure their values are correct.
AllocatedLazyArrayIterator<int> ait = lazyArray.begin();
AllocatedLazyArrayIterator<int> aend = lazyArray.end();
for (int i = 0; ait != aend && i < SIZE; ++ait, ++i) {
EXPECT_EQ(i, *ait) << "Correct value in position";
}
}
TEST_F(LazyArrayTest, Serialization) {
stringstream ss;
LazyArray<IntWrapper> lazyArray(SIZE);
EXPECT_EQ(SIZE, lazyArray.size()) << "Lazy Array didn't remember its size";
populateIntArray(lazyArray);
{
boost::archive::text_oarchive oa(ss);
oa << const_cast<const LazyArray<IntWrapper>&>(lazyArray);
}
{
// Thaw the data that was saved into a different LazyArray and
// make sure that it's the same data.
LazyArray<IntWrapper> newArray(SIZE);
boost::archive::text_iarchive ia(ss);
ia >> newArray;
checkArray(newArray);
}
}
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