/*
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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 "annotator/zlib-utils.h"
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#include <memory>
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#include "annotator/model_generated.h"
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#include "utils/zlib/zlib.h"
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#include "gmock/gmock.h"
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#include "gtest/gtest.h"
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namespace libtextclassifier3 {
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TEST(ZlibUtilsTest, CompressModel) {
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ModelT model;
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model.regex_model.reset(new RegexModelT);
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model.regex_model->patterns.emplace_back(new RegexModel_::PatternT);
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model.regex_model->patterns.back()->pattern = "this is a test pattern";
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model.regex_model->patterns.emplace_back(new RegexModel_::PatternT);
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model.regex_model->patterns.back()->pattern = "this is a second test pattern";
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model.datetime_model.reset(new DatetimeModelT);
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model.datetime_model->patterns.emplace_back(new DatetimeModelPatternT);
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model.datetime_model->patterns.back()->regexes.emplace_back(
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new DatetimeModelPattern_::RegexT);
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model.datetime_model->patterns.back()->regexes.back()->pattern =
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"an example datetime pattern";
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model.datetime_model->extractors.emplace_back(new DatetimeModelExtractorT);
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model.datetime_model->extractors.back()->pattern =
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"an example datetime extractor";
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// Compress the model.
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EXPECT_TRUE(CompressModel(&model));
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// Sanity check that uncompressed field is removed.
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EXPECT_TRUE(model.regex_model->patterns[0]->pattern.empty());
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EXPECT_TRUE(model.regex_model->patterns[1]->pattern.empty());
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EXPECT_TRUE(model.datetime_model->patterns[0]->regexes[0]->pattern.empty());
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EXPECT_TRUE(model.datetime_model->extractors[0]->pattern.empty());
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// Pack and load the model.
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flatbuffers::FlatBufferBuilder builder;
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builder.Finish(Model::Pack(builder, &model));
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const Model* compressed_model =
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GetModel(reinterpret_cast<const char*>(builder.GetBufferPointer()));
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ASSERT_TRUE(compressed_model != nullptr);
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// Decompress the fields again and check that they match the original.
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std::unique_ptr<ZlibDecompressor> decompressor = ZlibDecompressor::Instance();
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ASSERT_TRUE(decompressor != nullptr);
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std::string uncompressed_pattern;
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EXPECT_TRUE(decompressor->MaybeDecompress(
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compressed_model->regex_model()->patterns()->Get(0)->compressed_pattern(),
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&uncompressed_pattern));
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EXPECT_EQ(uncompressed_pattern, "this is a test pattern");
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EXPECT_TRUE(decompressor->MaybeDecompress(
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compressed_model->regex_model()->patterns()->Get(1)->compressed_pattern(),
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&uncompressed_pattern));
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EXPECT_EQ(uncompressed_pattern, "this is a second test pattern");
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EXPECT_TRUE(decompressor->MaybeDecompress(compressed_model->datetime_model()
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->patterns()
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->Get(0)
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->regexes()
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->Get(0)
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->compressed_pattern(),
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&uncompressed_pattern));
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EXPECT_EQ(uncompressed_pattern, "an example datetime pattern");
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EXPECT_TRUE(decompressor->MaybeDecompress(compressed_model->datetime_model()
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->extractors()
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->Get(0)
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->compressed_pattern(),
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&uncompressed_pattern));
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EXPECT_EQ(uncompressed_pattern, "an example datetime extractor");
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EXPECT_TRUE(DecompressModel(&model));
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EXPECT_EQ(model.regex_model->patterns[0]->pattern, "this is a test pattern");
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EXPECT_EQ(model.regex_model->patterns[1]->pattern,
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"this is a second test pattern");
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EXPECT_EQ(model.datetime_model->patterns[0]->regexes[0]->pattern,
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"an example datetime pattern");
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EXPECT_EQ(model.datetime_model->extractors[0]->pattern,
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"an example datetime extractor");
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}
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} // namespace libtextclassifier3
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