/home/palakars/workspace-inprogress/code-in-progress/aitools3/aitools3-aq-invertedindex-cpp/test/core/TestPostlistBuilder.cpp

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#include <boost/test/unit_test.hpp>
#include "PostlistBuilder.hpp"

using namespace aitools::invertedindex;

BOOST_AUTO_TEST_SUITE(postlist_builder);

BOOST_AUTO_TEST_CASE(default_ctor)
{
        PostlistBuilder builder;
        BOOST_CHECK(builder.empty());
        BOOST_CHECK_EQUAL(builder.length(), 0);
}

BOOST_AUTO_TEST_CASE(append)
{
        ByteBuffer buffer;
        unsigned length(100);
        PostlistBuilder builder;
        for (unsigned i(0); i != length; ++i)
        {
                buffer.resize(i);
                builder.append(buffer);
        }
        BOOST_CHECK_EQUAL(builder.length(), length);
        BOOST_CHECK(!builder.empty());
}

BOOST_AUTO_TEST_CASE(iterator)
{
        // empty postlist
        uint16_t checksum(123);
        PostlistBuilder builder;
        builder.set_checksum(checksum);
        Iterator::SharedPointer iterator(builder.build());
        BOOST_CHECK_EQUAL(iterator->checksum(), checksum);
        BOOST_CHECK_EQUAL(iterator->length(), 0);
        BOOST_CHECK_EQUAL(builder.length(), 0);
        BOOST_CHECK(builder.empty());

        // non empty postlist with constant entry size
        ByteBuffer buffer(1);
        unsigned length(100);
        for (unsigned i(0); i != length; ++i)
        {
                builder.append(buffer);
        }
        iterator = builder.build();
        BOOST_CHECK_EQUAL(iterator->length(), length);
        BOOST_CHECK_EQUAL(iterator->checksum(), 0);
        BOOST_CHECK_EQUAL(builder.length(), 0);
        BOOST_CHECK(builder.empty());
        for (unsigned i(0); i != length; ++i)
        {
                BOOST_CHECK_EQUAL(iterator->size(), 1);
                iterator->advance();
        }

        // non empty postlist with variable entry size
        for (unsigned i(0); i != length; ++i)
        {
                buffer.resize(i);
                builder.append(buffer);
        }
        iterator = builder.build();
        BOOST_CHECK_EQUAL(iterator->length(), length);
        BOOST_CHECK_EQUAL(iterator->checksum(), 0);
        BOOST_CHECK_EQUAL(builder.length(), 0);
        BOOST_CHECK(builder.empty());
        for (unsigned i(0); i != length; ++i)
        {
                BOOST_CHECK_EQUAL(iterator->size(), i);
                iterator->advance();
        }
}

BOOST_AUTO_TEST_SUITE_END();

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