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// Copyright 2016 Google Inc.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.!
#include "builder.h"
#include "common.h"
#include "filesystem.h"
#include "normalizer.h"
#include "sentencepiece_trainer.h"
#include "testharness.h"
#include "third_party/absl/strings/str_cat.h"
#include "util.h"
namespace sentencepiece {
namespace normalizer {
// Space symbol
#define WS "\xe2\x96\x81"
TEST(BuilderTest, RemoveRedundantMapTest) {
Builder::CharsMap chars_map;
// ab => AB, a => A, b => B, abc => BCA
chars_map[{0x0061}] = {0x0041};
chars_map[{0x0062}] = {0x0042};
chars_map[{0x0061, 0x0062}] = {0x0041, 0x0042};
chars_map[{0x0061, 0x0062, 0x0063}] = {0x0043, 0x0042, 0x0041};
EXPECT_TRUE(Builder::RemoveRedundantMap(&chars_map).ok());
EXPECT_EQ(3, chars_map.size());
EXPECT_EQ(chars_map.end(), chars_map.find({0x0061, 0x0062}));
EXPECT_NE(chars_map.end(), chars_map.find({0x0061}));
EXPECT_NE(chars_map.end(), chars_map.find({0x0062}));
EXPECT_NE(chars_map.end(), chars_map.find({0x0061, 0x0062, 0x0063}));
}
TEST(BuilderTest, GetPrecompiledCharsMapWithInvalidNameTest) {
std::string output;
EXPECT_FALSE(Builder::GetPrecompiledCharsMap("", &output).ok());
EXPECT_FALSE(Builder::GetPrecompiledCharsMap("__UNKNOWN__", &output).ok());
}
TEST(BuilderTest, BuildNFKCMapTest) {
Builder::CharsMap chars_map;
#ifdef ENABLE_NFKC_COMPILE
EXPECT_TRUE(Builder::BuildNFKCMap(&chars_map).ok());
EXPECT_TRUE(!chars_map.empty());
#else
EXPECT_TRUE(Builder::BuildNFKCMap(&chars_map).ok());
#endif
}
TEST(BuilderTest, GetPrecompiledCharsMapTest) {
{
const NormalizerSpec spec =
SentencePieceTrainer::GetNormalizerSpec("nmt_nfkc");
const Normalizer normalizer(spec);
EXPECT_EQ(WS "ABC", normalizer.Normalize("ＡＢＣ"));
EXPECT_EQ(WS "(株)", normalizer.Normalize("㈱"));
EXPECT_EQ(WS "グーグル", normalizer.Normalize("ｸﾞｰｸﾞﾙ"));
}
{
const NormalizerSpec spec =
SentencePieceTrainer::GetNormalizerSpec("nfkc_cf");
const Normalizer normalizer(spec);
EXPECT_EQ(WS "abc", normalizer.Normalize("ＡＢＣ"));
EXPECT_EQ(WS "abc", normalizer.Normalize("ABC"));
}
{
const NormalizerSpec spec =
SentencePieceTrainer::GetNormalizerSpec("nmt_nfkc_cf");
const Normalizer normalizer(spec);
EXPECT_EQ(WS "abc", normalizer.Normalize("ＡＢＣ"));
EXPECT_EQ(WS "abc", normalizer.Normalize("ABC"));
}
{
const NormalizerSpec spec =
SentencePieceTrainer::GetNormalizerSpec("identity");
EXPECT_TRUE(spec.precompiled_charsmap().empty());
const Normalizer normalizer(spec);
EXPECT_EQ(WS "ＡＢＣ", normalizer.Normalize("ＡＢＣ"));
EXPECT_EQ(WS "㈱", normalizer.Normalize("㈱"));
EXPECT_EQ(WS "ｸﾞｰｸﾞﾙ", normalizer.Normalize("ｸﾞｰｸﾞﾙ"));
}
}
TEST(BuilderTest, CompileCharsMap) {
Builder::CharsMap chars_map;
// Lowercase => Uppercase
for (char32 lc = static_cast<char32>('a'); lc <= static_cast<char32>('z');
++lc) {
const char32 uc = lc + 'A' - 'a';
chars_map[{lc}] = {uc};
}
// あいう => abc
chars_map[{0x3042, 0x3044, 0x3046}] = {0x0061, 0x0062, 0x0063};
// えお => remove
chars_map[{0x3048, 0x304A}] = {};
NormalizerSpec spec;
EXPECT_TRUE(
Builder::CompileCharsMap(chars_map, spec.mutable_precompiled_charsmap())
.ok());
Builder::CharsMap decompiled_chars_map;
EXPECT_TRUE(Builder::DecompileCharsMap(spec.precompiled_charsmap(),
&decompiled_chars_map)
.ok());
EXPECT_EQ(chars_map, decompiled_chars_map);
spec.set_add_dummy_prefix(false);
const Normalizer normalizer(spec);
EXPECT_EQ("ABC", normalizer.Normalize("abc"));
EXPECT_EQ("ABC", normalizer.Normalize("ABC"));
EXPECT_EQ("XY" WS "Z", normalizer.Normalize("xy z"));
EXPECT_EQ("あ", normalizer.Normalize("あ"));
EXPECT_EQ("abc", normalizer.Normalize("あいう"));
EXPECT_EQ("abcえ", normalizer.Normalize("あいうえ"));
EXPECT_EQ("ABCabcD", normalizer.Normalize("abcあいうd"));
EXPECT_EQ("abcか", normalizer.Normalize("あいうえおか"));
}
static constexpr char kTestInputData[] = "nfkc.tsv";
TEST(BuilderTest, LoadCharsMapTest) {
Builder::CharsMap chars_map;
ASSERT_TRUE(
Builder::LoadCharsMap(
util::JoinPath(::testing::SrcDir(), kTestInputData),
&chars_map)
.ok());
std::string precompiled, expected;
ASSERT_TRUE(Builder::CompileCharsMap(chars_map, &precompiled).ok());
// Round-trip.
Builder::CharsMap decompiled_chars_map;
ASSERT_TRUE(
Builder::DecompileCharsMap(precompiled, &decompiled_chars_map).ok());
EXPECT_EQ(chars_map, decompiled_chars_map);
ASSERT_TRUE(
Builder::SaveCharsMap(
util::JoinPath(::testing::TempDir(), "output.tsv"),
chars_map)
.ok());
Builder::CharsMap saved_chars_map;
ASSERT_TRUE(
Builder::LoadCharsMap(
util::JoinPath(::testing::TempDir(), "output.tsv"),
&saved_chars_map)
.ok());
EXPECT_EQ(chars_map, saved_chars_map);
#ifdef ENABLE_NFKC_COMPILE
Builder::CharsMap nfkc_map;
ASSERT_TRUE(Builder::BuildNFKCMap(&nfkc_map).ok());
ASSERT_TRUE(Builder::CompileCharsMap(nfkc_map, &expected).ok());
#endif
}
TEST(BuilderTest, LoadCharsMapWithEmptyeTest) {
{
auto output = filesystem::NewWritableFile(
util::JoinPath(::testing::TempDir(), "test.tsv"));
output->WriteLine("0061\t0041");
output->WriteLine("0062");
output->WriteLine("0063\t\t#foo=>bar");
}
Builder::CharsMap chars_map;
EXPECT_TRUE(Builder::LoadCharsMap(
util::JoinPath(::testing::TempDir(), "test.tsv"),
&chars_map)
.ok());
EXPECT_EQ(3, chars_map.size());
EXPECT_EQ(std::vector<char32>({0x0041}), chars_map[{0x0061}]);
EXPECT_EQ(std::vector<char32>({}), chars_map[{0x0062}]);
EXPECT_EQ(std::vector<char32>({}), chars_map[{0x0063}]);
EXPECT_TRUE(
Builder::SaveCharsMap(
util::JoinPath(::testing::TempDir(), "test_out.tsv"),
chars_map)
.ok());
Builder::CharsMap new_chars_map;
EXPECT_TRUE(
Builder::LoadCharsMap(
util::JoinPath(::testing::TempDir(), "test_out.tsv"),
&new_chars_map)
.ok());
EXPECT_EQ(chars_map, new_chars_map);
}
TEST(BuilderTest, ContainsTooManySharedPrefixTest) {
Builder::CharsMap chars_map;
std::vector<char32> keys;
// chars_map contains too many shared prefix ("aaaa...");
for (int i = 0; i < 100; ++i) {
keys.push_back('a');
chars_map[keys] = {'b'};
}
std::string output;
EXPECT_FALSE(Builder::CompileCharsMap(chars_map, &output).ok());
}
} // namespace normalizer
} // namespace sentencepiece
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