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#include <gtest/gtest.h>
#include <memory>
#include "mocks/mock_data_array.h"
#include "mocks/mock_suffix_array.h"
#include "suffix_array_sampler.h"
using namespace std;
using namespace ::testing;
namespace extractor {
namespace {
class SuffixArraySamplerTest : public Test {
protected:
virtual void SetUp() {
data_array = make_shared<MockDataArray>();
for (int i = 0; i < 10; ++i) {
EXPECT_CALL(*data_array, GetSentenceId(i)).WillRepeatedly(Return(i));
}
suffix_array = make_shared<MockSuffixArray>();
EXPECT_CALL(*suffix_array, GetData()).WillRepeatedly(Return(data_array));
for (int i = 0; i < 10; ++i) {
EXPECT_CALL(*suffix_array, GetSuffix(i)).WillRepeatedly(Return(i));
}
}
shared_ptr<MockDataArray> data_array;
shared_ptr<MockSuffixArray> suffix_array;
};
TEST_F(SuffixArraySamplerTest, TestSample) {
PhraseLocation location(0, 10);
unordered_set<int> blacklisted_sentence_ids;
SuffixArrayRangeSampler sampler(suffix_array, 1);
vector<int> expected_locations = {0};
EXPECT_EQ(PhraseLocation(expected_locations, 1),
sampler.Sample(location, blacklisted_sentence_ids));
sampler = SuffixArrayRangeSampler(suffix_array, 2);
expected_locations = {0, 5};
EXPECT_EQ(PhraseLocation(expected_locations, 1),
sampler.Sample(location, blacklisted_sentence_ids));
sampler = SuffixArrayRangeSampler(suffix_array, 3);
expected_locations = {0, 3, 7};
EXPECT_EQ(PhraseLocation(expected_locations, 1),
sampler.Sample(location, blacklisted_sentence_ids));
sampler = SuffixArrayRangeSampler(suffix_array, 4);
expected_locations = {0, 3, 5, 8};
EXPECT_EQ(PhraseLocation(expected_locations, 1),
sampler.Sample(location, blacklisted_sentence_ids));
sampler = SuffixArrayRangeSampler(suffix_array, 100);
expected_locations = {0, 1, 2, 3, 4, 5, 6, 7, 8, 9};
EXPECT_EQ(PhraseLocation(expected_locations, 1),
sampler.Sample(location, blacklisted_sentence_ids));
}
TEST_F(SuffixArraySamplerTest, TestBackoffSample) {
PhraseLocation location(0, 10);
SuffixArrayRangeSampler sampler(suffix_array, 1);
unordered_set<int> blacklisted_sentence_ids = {0};
vector<int> expected_locations = {1};
EXPECT_EQ(PhraseLocation(expected_locations, 1),
sampler.Sample(location, blacklisted_sentence_ids));
blacklisted_sentence_ids = {0, 1, 2, 3, 4, 5, 6, 7, 8};
expected_locations = {9};
EXPECT_EQ(PhraseLocation(expected_locations, 1),
sampler.Sample(location, blacklisted_sentence_ids));
sampler = SuffixArrayRangeSampler(suffix_array, 2);
blacklisted_sentence_ids = {0, 5};
expected_locations = {1, 4};
EXPECT_EQ(PhraseLocation(expected_locations, 1),
sampler.Sample(location, blacklisted_sentence_ids));
blacklisted_sentence_ids = {0, 1, 2, 3};
expected_locations = {4, 5};
EXPECT_EQ(PhraseLocation(expected_locations, 1),
sampler.Sample(location, blacklisted_sentence_ids));
sampler = SuffixArrayRangeSampler(suffix_array, 3);
blacklisted_sentence_ids = {0, 3, 7};
expected_locations = {1, 2, 6};
EXPECT_EQ(PhraseLocation(expected_locations, 1),
sampler.Sample(location, blacklisted_sentence_ids));
sampler = SuffixArrayRangeSampler(suffix_array, 4);
blacklisted_sentence_ids = {0, 3, 5, 8};
expected_locations = {1, 2, 4, 7};
EXPECT_EQ(PhraseLocation(expected_locations, 1),
sampler.Sample(location, blacklisted_sentence_ids));
sampler = SuffixArrayRangeSampler(suffix_array, 100);
blacklisted_sentence_ids = {0};
expected_locations = {1, 2, 3, 4, 5, 6, 7, 8, 9};
EXPECT_EQ(PhraseLocation(expected_locations, 1),
sampler.Sample(location, blacklisted_sentence_ids));
blacklisted_sentence_ids = {9};
expected_locations = {0, 1, 2, 3, 4, 5, 6, 7, 8};
EXPECT_EQ(PhraseLocation(expected_locations, 1),
sampler.Sample(location, blacklisted_sentence_ids));
}
}
} // namespace extractor
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