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5f923cd | 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 | // Copyright 2025 The ODML Authors.
//
// 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 "runtime/components/huggingface_tokenizer.h"
#include <fcntl.h>
#include <filesystem> // NOLINT: Required for path manipulation.
#include <fstream>
#include <iterator>
#include <string>
#include <utility>
#include <vector>
#include <gmock/gmock.h>
#include <gtest/gtest.h>
#include "absl/status/status.h" // from @com_google_absl
#include "absl/status/statusor.h" // from @com_google_absl
#include "absl/strings/str_cat.h" // from @com_google_absl
#include "absl/strings/string_view.h" // from @com_google_absl
#include "runtime/components/tokenizer.h"
#include "runtime/util/status_macros.h" // IWYU pragma: keep
#include "runtime/util/test_utils.h" // IWYU pragma: keep
namespace litert::lm {
namespace {
using ::testing::status::IsOkAndHolds;
constexpr char kTestdataDir[] =
"litert_lm/runtime/components/testdata/";
std::string GetHuggingFaceModelPath() {
return (std::filesystem::path(::testing::SrcDir()) / kTestdataDir /
"tokenizer.json")
.string();
}
absl::StatusOr<std::string> GetContents(const std::string& path) {
std::ifstream input_stream(path);
if (!input_stream.is_open()) {
return absl::InternalError(absl::StrCat("Could not open file: ", path));
}
std::string content;
content.assign((std::istreambuf_iterator<char>(input_stream)),
(std::istreambuf_iterator<char>()));
return std::move(content);
}
TEST(HuggingFaceTokenizerTtest, CreateFromFile) {
auto tokenizer_or =
HuggingFaceTokenizer::CreateFromFile(GetHuggingFaceModelPath());
EXPECT_TRUE(tokenizer_or.ok());
}
TEST(HuggingFaceTokenizerTtest, CreateFromBuffer) {
ASSERT_OK_AND_ASSIGN(auto json, GetContents(GetHuggingFaceModelPath()));
auto tokenizer_or = HuggingFaceTokenizer::CreateFromJson(json);
EXPECT_TRUE(tokenizer_or.ok());
}
TEST(HuggingFaceTokenizerTtest, Create) {
auto tokenizer_or =
HuggingFaceTokenizer::CreateFromFile(GetHuggingFaceModelPath());
EXPECT_TRUE(tokenizer_or.ok());
}
TEST(HuggingFaceTokenizerTtest, GetTokenizerType) {
auto tokenizer_or =
HuggingFaceTokenizer::CreateFromFile(GetHuggingFaceModelPath());
EXPECT_EQ(tokenizer_or.value()->GetTokenizerType(),
TokenizerType::kHuggingFace);
EXPECT_TRUE(tokenizer_or.ok());
}
TEST(HuggingFaceTokenizerTest, TextToTokenIds) {
auto tokenizer_or =
HuggingFaceTokenizer::CreateFromFile(GetHuggingFaceModelPath());
ASSERT_OK(tokenizer_or);
auto tokenizer = std::move(tokenizer_or.value());
absl::string_view text = "How's it going?";
auto ids_or = tokenizer->TextToTokenIds(text);
ASSERT_OK(ids_or);
EXPECT_THAT(ids_or.value(), ::testing::ElementsAre(2020, 506, 357, 2045, 47));
}
TEST(HuggingFaceTokenizerTest, TokenToId) {
ASSERT_OK_AND_ASSIGN(auto tokenizer, HuggingFaceTokenizer::CreateFromFile(
GetHuggingFaceModelPath()));
EXPECT_THAT(tokenizer->TokenToId("X"), IsOkAndHolds(72));
}
TEST(HuggingFaceTokenizerTest, TokenIdsToText) {
auto tokenizer_or =
HuggingFaceTokenizer::CreateFromFile(GetHuggingFaceModelPath());
ASSERT_OK(tokenizer_or);
auto tokenizer = std::move(tokenizer_or.value());
const std::vector<int> ids = {2020, 506, 357, 2045, 47};
auto text_or = tokenizer->TokenIdsToText(ids);
ASSERT_OK(text_or);
EXPECT_EQ(text_or.value(), "How's it going?");
}
TEST(HuggingFaceTokenizerTest, GetTokens) {
ASSERT_OK_AND_ASSIGN(auto tokenizer, HuggingFaceTokenizer::CreateFromFile(
GetHuggingFaceModelPath()));
std::vector<std::string> tokens = tokenizer->GetTokens();
// Check number of tokens.
EXPECT_EQ(tokens.size(), 49152);
// Check a few tokens.
EXPECT_EQ(tokens[0], "<|endoftext|>");
EXPECT_EQ(tokens[1], "<|im_start|>");
EXPECT_EQ(tokens[3], "<repo_name>");
EXPECT_EQ(tokens[17], "!");
EXPECT_EQ(tokens[47], "?");
EXPECT_EQ(tokens[72], "X");
}
} // namespace
} // namespace litert::lm
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