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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 | // Copyright 2026 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/constrained_decoding/llg_constraint_provider.h"
#include <memory>
#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/string_view.h" // from @com_google_absl
#include "runtime/components/constrained_decoding/llg_constraint_config.h"
#include "runtime/components/tokenizer.h"
#include "runtime/util/test_utils.h" // NOLINT
namespace litert::lm {
namespace {
using ::testing::Return;
class MockTokenizer : public Tokenizer {
public:
MOCK_METHOD(TokenizerType, GetTokenizerType, (), (const, override));
MOCK_METHOD(absl::StatusOr<TokenIds>, TextToTokenIds, (absl::string_view),
(override));
MOCK_METHOD(absl::StatusOr<int>, TokenToId, (absl::string_view), (override));
MOCK_METHOD(absl::StatusOr<std::string>, TokenIdsToText, (const TokenIds&),
(override));
MOCK_METHOD(std::vector<std::string>, GetTokens, (), (const, override));
};
class LlgConstraintProviderTest : public ::testing::Test {
protected:
MockTokenizer tokenizer_;
};
TEST_F(LlgConstraintProviderTest, CreateSuccess) {
LlGuidanceConfig config;
config.eos_id = 1;
EXPECT_CALL(tokenizer_, GetTokens())
.WillOnce(Return(std::vector<std::string>{"<pad>", "<eos>", "a", "b"}));
auto provider = LlgConstraintProvider::Create(tokenizer_, config);
EXPECT_TRUE(provider.ok());
}
TEST_F(LlgConstraintProviderTest, CreateFailsWithoutEosId) {
LlGuidanceConfig config;
auto provider = LlgConstraintProvider::Create(tokenizer_, config);
EXPECT_FALSE(provider.ok());
EXPECT_EQ(provider.status().code(), absl::StatusCode::kInvalidArgument);
}
TEST_F(LlgConstraintProviderTest, CreateConstraintProviderSuccess) {
LlGuidanceConfig config;
config.eos_id = 1;
EXPECT_CALL(tokenizer_, GetTokens())
.WillOnce(Return(std::vector<std::string>{"<pad>", "<eos>", "a", "b"}));
auto constraint_provider = LlgConstraintProvider::Create(tokenizer_, config);
ASSERT_TRUE(constraint_provider.ok());
}
TEST_F(LlgConstraintProviderTest, CreateConstraintSuccess) {
LlGuidanceConfig config;
config.eos_id = 1;
EXPECT_CALL(tokenizer_, GetTokens())
.WillOnce(Return(std::vector<std::string>{"<pad>", "<eos>", "a", "b"}));
auto constraint_provider = LlgConstraintProvider::Create(tokenizer_, config);
ASSERT_TRUE(constraint_provider.ok());
auto provider = std::move(constraint_provider.value());
auto constraint = provider->CreateConstraint(LlGuidanceConstraintArg{
.constraint_type = LlgConstraintType::kRegex, .constraint_string = "a+"});
EXPECT_TRUE(constraint.ok());
}
} // namespace
} // namespace litert::lm
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