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#include <gtest/gtest.h>
#include <memory>
#include <sstream>
#include <vector>
#include <boost/archive/text_iarchive.hpp>
#include <boost/archive/text_oarchive.hpp>
#include "mocks/mock_data_array.h"
#include "mocks/mock_suffix_array.h"
#include "precomputation.h"
using namespace std;
using namespace ::testing;
namespace ar = boost::archive;
namespace extractor {
namespace {
class PrecomputationTest : public Test {
protected:
virtual void SetUp() {
data = {4, 2, 3, 5, 7, 2, 3, 5, 2, 3, 4, 2, 1};
data_array = make_shared<MockDataArray>();
EXPECT_CALL(*data_array, GetData()).WillRepeatedly(ReturnRef(data));
vector<int> suffixes{12, 8, 5, 1, 9, 6, 2, 0, 10, 7, 3, 4, 13};
vector<int> lcp{-1, 0, 2, 3, 1, 0, 1, 2, 0, 2, 0, 1, 0, 0};
suffix_array = make_shared<MockSuffixArray>();
EXPECT_CALL(*suffix_array, GetData()).WillRepeatedly(Return(data_array));
for (size_t i = 0; i < suffixes.size(); ++i) {
EXPECT_CALL(*suffix_array,
GetSuffix(i)).WillRepeatedly(Return(suffixes[i]));
}
EXPECT_CALL(*suffix_array, BuildLCPArray()).WillRepeatedly(Return(lcp));
precomputation = Precomputation(suffix_array, 3, 3, 10, 5, 1, 4, 2);
}
void CheckCollocation(const Collocations& collocations,
const vector<int>& collocation,
const vector<vector<int>>& locations) {
for (auto location: locations) {
auto item = make_pair(collocation, location);
EXPECT_FALSE(find(collocations.begin(), collocations.end(), item) ==
collocations.end());
}
}
void CheckIllegalCollocation(const Collocations& collocations,
const vector<int>& collocation) {
for (auto item: collocations) {
EXPECT_FALSE(collocation == item.first);
}
}
vector<int> data;
shared_ptr<MockDataArray> data_array;
shared_ptr<MockSuffixArray> suffix_array;
Precomputation precomputation;
};
TEST_F(PrecomputationTest, TestCollocations) {
Collocations collocations = precomputation.GetCollocations();
EXPECT_EQ(50, collocations.size());
vector<int> collocation = {2, 3, -1, 2};
vector<vector<int>> locations = {{1, 5}, {1, 8}, {5, 8}, {5, 11}, {8, 11}};
CheckCollocation(collocations, collocation, locations);
collocation = {2, 3, -1, 2, 3};
locations = {{1, 5}, {1, 8}, {5, 8}};
CheckCollocation(collocations, collocation, locations);
collocation = {2, 3, -1, 3};
locations = {{1, 6}, {1, 9}, {5, 9}};
CheckCollocation(collocations, collocation, locations);
collocation = {3, -1, 2};
locations = {{2, 5}, {2, 8}, {2, 11}, {6, 8}, {6, 11}, {9, 11}};
CheckCollocation(collocations, collocation, locations);
collocation = {3, -1, 3};
locations = {{2, 6}, {2, 9}, {6, 9}};
CheckCollocation(collocations, collocation, locations);
collocation = {3, -1, 2, 3};
locations = {{2, 5}, {2, 8}, {6, 8}};
CheckCollocation(collocations, collocation, locations);
collocation = {2, -1, 2};
locations = {{1, 5}, {1, 8}, {5, 8}, {5, 11}, {8, 11}};
CheckCollocation(collocations, collocation, locations);
collocation = {2, -1, 2, 3};
locations = {{1, 5}, {1, 8}, {5, 8}};
CheckCollocation(collocations, collocation, locations);
collocation = {2, -1, 3};
locations = {{1, 6}, {1, 9}, {5, 9}};
CheckCollocation(collocations, collocation, locations);
collocation = {2, -1, 2, -2, 2};
locations = {{1, 5, 8}, {5, 8, 11}};
CheckCollocation(collocations, collocation, locations);
collocation = {2, -1, 2, -2, 3};
locations = {{1, 5, 9}};
CheckCollocation(collocations, collocation, locations);
collocation = {2, -1, 3, -2, 2};
locations = {{1, 6, 8}, {5, 9, 11}};
CheckCollocation(collocations, collocation, locations);
collocation = {2, -1, 3, -2, 3};
locations = {{1, 6, 9}};
CheckCollocation(collocations, collocation, locations);
collocation = {3, -1, 2, -2, 2};
locations = {{2, 5, 8}, {2, 5, 11}, {2, 8, 11}, {6, 8, 11}};
CheckCollocation(collocations, collocation, locations);
collocation = {3, -1, 2, -2, 3};
locations = {{2, 5, 9}};
CheckCollocation(collocations, collocation, locations);
collocation = {3, -1, 3, -2, 2};
locations = {{2, 6, 8}, {2, 6, 11}, {2, 9, 11}, {6, 9, 11}};
CheckCollocation(collocations, collocation, locations);
collocation = {3, -1, 3, -2, 3};
locations = {{2, 6, 9}};
CheckCollocation(collocations, collocation, locations);
// Collocation exceeds max_rule_symbols.
collocation = {2, -1, 2, -2, 2, 3};
CheckIllegalCollocation(collocations, collocation);
// Collocation contains non frequent pattern.
collocation = {2, -1, 5};
CheckIllegalCollocation(collocations, collocation);
}
TEST_F(PrecomputationTest, TestSerialization) {
stringstream stream(ios_base::out | ios_base::in);
ar::text_oarchive output_stream(stream, ar::no_header);
output_stream << precomputation;
Precomputation precomputation_copy;
ar::text_iarchive input_stream(stream, ar::no_header);
input_stream >> precomputation_copy;
EXPECT_EQ(precomputation, precomputation_copy);
}
} // namespace
} // namespace extractor
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