/*
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* Copyright (C) 2018 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#include <vector>
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#include "gmock/gmock.h"
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#include "gtest/gtest.h"
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#include "utils/base/integral_types.h"
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#include "utils/sentencepiece/sorted_strings_table.h"
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namespace libtextclassifier3 {
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namespace {
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TEST(SortedStringsTest, Lookup) {
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const char pieces[] = "hell\0hello\0o\0there\0";
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const uint32 offsets[] = {0, 5, 11, 13};
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SortedStringsTable table(/*num_pieces=*/4, offsets, StringPiece(pieces, 18),
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/*use_linear_scan_threshold=*/1);
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{
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std::vector<TrieMatch> matches;
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EXPECT_TRUE(table.FindAllPrefixMatches("hello there", &matches));
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EXPECT_EQ(matches.size(), 2);
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EXPECT_EQ(matches[0].id, 0 /*hell*/);
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EXPECT_EQ(matches[0].match_length, 4 /*hell*/);
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EXPECT_EQ(matches[1].id, 1 /*hello*/);
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EXPECT_EQ(matches[1].match_length, 5 /*hello*/);
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}
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{
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std::vector<TrieMatch> matches;
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EXPECT_TRUE(table.FindAllPrefixMatches("he", &matches));
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EXPECT_THAT(matches, testing::IsEmpty());
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}
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{
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std::vector<TrieMatch> matches;
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EXPECT_TRUE(table.FindAllPrefixMatches("he", &matches));
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EXPECT_THAT(matches, testing::IsEmpty());
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}
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{
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std::vector<TrieMatch> matches;
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EXPECT_TRUE(table.FindAllPrefixMatches("abcd", &matches));
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EXPECT_THAT(matches, testing::IsEmpty());
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}
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{
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std::vector<TrieMatch> matches;
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EXPECT_TRUE(table.FindAllPrefixMatches("", &matches));
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EXPECT_THAT(matches, testing::IsEmpty());
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}
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{
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std::vector<TrieMatch> matches;
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EXPECT_TRUE(table.FindAllPrefixMatches("hi there", &matches));
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EXPECT_THAT(matches, testing::IsEmpty());
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}
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{
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std::vector<TrieMatch> matches;
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EXPECT_TRUE(table.FindAllPrefixMatches(StringPiece("\0", 1), &matches));
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EXPECT_THAT(matches, testing::IsEmpty());
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}
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{
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std::vector<TrieMatch> matches;
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EXPECT_TRUE(
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table.FindAllPrefixMatches(StringPiece("\xff, \xfe", 2), &matches));
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EXPECT_THAT(matches, testing::IsEmpty());
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}
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{
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TrieMatch match;
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EXPECT_TRUE(table.LongestPrefixMatch("hella there", &match));
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EXPECT_EQ(match.id, 0 /*hell*/);
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}
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{
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TrieMatch match;
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EXPECT_TRUE(table.LongestPrefixMatch("hello there", &match));
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EXPECT_EQ(match.id, 1 /*hello*/);
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}
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{
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TrieMatch match;
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EXPECT_TRUE(table.LongestPrefixMatch("abcd", &match));
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EXPECT_EQ(match.id, -1);
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}
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{
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TrieMatch match;
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EXPECT_TRUE(table.LongestPrefixMatch("", &match));
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EXPECT_EQ(match.id, -1);
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}
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}
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} // namespace
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} // namespace libtextclassifier3
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