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#include "Ngram.h"
#define BOOST_TEST_MODULE MertNgram
#include <boost/test/unit_test.hpp>
using namespace MosesTuning;
BOOST_AUTO_TEST_CASE(ngram_basic)
{
NgramCounts counts;
NgramCounts::Key key;
key.push_back(1);
key.push_back(2);
key.push_back(4);
counts.Add(key);
BOOST_REQUIRE(!counts.empty());
BOOST_CHECK_EQUAL(counts.size(), 1);
NgramCounts::const_iterator it = counts.find(key);
BOOST_CHECK(it != counts.end());
BOOST_CHECK_EQUAL(it->first.size(), key.size());
for (std::size_t i = 0; i < key.size(); ++i) {
BOOST_CHECK_EQUAL(it->first[i], key[i]);
}
BOOST_CHECK_EQUAL(it->second, 1);
}
BOOST_AUTO_TEST_CASE(ngram_Add)
{
NgramCounts counts;
NgramCounts::Key key;
key.push_back(1);
key.push_back(2);
counts.Add(key);
BOOST_REQUIRE(!counts.empty());
BOOST_CHECK_EQUAL(counts[key], counts.get_default_count());
NgramCounts::Key key2;
key2.push_back(1);
key2.push_back(2);
counts.Add(key2);
BOOST_CHECK_EQUAL(counts.size(), 1);
BOOST_CHECK_EQUAL(counts[key], counts.get_default_count() + 1);
BOOST_CHECK_EQUAL(counts[key2], counts.get_default_count() + 1);
NgramCounts::Key key3;
key3.push_back(10);
counts.Add(key3);
BOOST_CHECK_EQUAL(counts.size(), 2);
BOOST_CHECK_EQUAL(counts[key3], counts.get_default_count());
}
BOOST_AUTO_TEST_CASE(ngram_lookup)
{
NgramCounts counts;
NgramCounts::Key key;
key.push_back(1);
key.push_back(2);
key.push_back(4);
counts.Add(key);
{
NgramCounts::Value v;
BOOST_REQUIRE(counts.Lookup(key, &v));
BOOST_CHECK_EQUAL(v, 1);
}
// the case the key is not found.
{
NgramCounts::Key key2;
key2.push_back(0);
key2.push_back(4);
NgramCounts::Value v;
// We only check the return value;
// we don't check the value of "v" because it makes sense
// to check the value when the specified ngram is found.
BOOST_REQUIRE(!counts.Lookup(key2, &v));
}
// test after clear
counts.clear();
BOOST_CHECK(counts.empty());
{
NgramCounts::Value v;
BOOST_CHECK(!counts.Lookup(key, &v));
}
}
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