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// Copyright 2023 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "components/segmentation_platform/internal/database/cached_result_provider.h"
#include "components/prefs/pref_registry_simple.h"
#include "components/prefs/testing_pref_service.h"
#include "components/segmentation_platform/internal/constants.h"
#include "components/segmentation_platform/internal/database/client_result_prefs.h"
#include "components/segmentation_platform/internal/metadata/metadata_utils.h"
#include "components/segmentation_platform/internal/metadata/metadata_writer.h"
#include "components/segmentation_platform/public/config.h"
#include "components/segmentation_platform/public/proto/prediction_result.pb.h"
#include "testing/gmock/include/gmock/gmock.h"
#include "testing/gtest/include/gtest/gtest.h"
using testing::_;
using testing::Invoke;
using testing::Return;
using testing::SaveArg;
namespace segmentation_platform {
namespace proto {
class SegmentInfo;
} // namespace proto
namespace {
const char kClientKey[] = "test_key";
// Labels for MultiClassClassifier.
constexpr std::array<const char*, 5> kMultiClassLabels{
"Vanilla", "Chocolate", "Strawberry", "Mango", "Peach"};
std::unique_ptr<Config> CreateTestConfig() {
auto config = std::make_unique<Config>();
config->segmentation_key = kClientKey;
config->segmentation_uma_name = "test_key";
config->segment_selection_ttl = base::Days(28);
config->unknown_selection_ttl = base::Days(14);
config->AddSegmentId(SegmentId::OPTIMIZATION_TARGET_SEGMENTATION_SHARE);
return config;
}
proto::OutputConfig GetTestOutputConfigForMultiClassClassifier() {
proto::SegmentationModelMetadata model_metadata;
MetadataWriter writer(&model_metadata);
writer.AddOutputConfigForMultiClassClassifier(
kMultiClassLabels,
/*top_k_outputs=*/kMultiClassLabels.size(), /*threshold=*/0.1);
return model_metadata.output_config();
}
} // namespace
class CachedResultProviderTest : public testing::Test {
public:
CachedResultProviderTest() = default;
~CachedResultProviderTest() override = default;
void SetUp() override {
result_prefs_ = std::make_unique<ClientResultPrefs>(&pref_service_);
pref_service_.registry()->RegisterStringPref(kSegmentationClientResultPrefs,
std::string());
configs_.push_back(CreateTestConfig());
}
protected:
TestingPrefServiceSimple pref_service_;
std::unique_ptr<ClientResultPrefs> result_prefs_;
std::unique_ptr<CachedResultProvider> cached_result_provider_;
std::vector<std::unique_ptr<Config>> configs_;
};
TEST_F(CachedResultProviderTest, CachedResultProviderWithEmptyPrefs) {
cached_result_provider_ =
std::make_unique<CachedResultProvider>(result_prefs_.get(), configs_);
std::optional<proto::PredictionResult> retrieved_prediction_result =
cached_result_provider_->GetPredictionResultForClient(kClientKey);
EXPECT_FALSE(retrieved_prediction_result);
}
TEST_F(CachedResultProviderTest,
GetPredictionResultForClient_WithNonEmptyResult) {
std::vector<float> model_scores = {0, 0, 1, 0, 0};
proto::PredictionResult saved_prediction_result =
metadata_utils::CreatePredictionResult(
model_scores, GetTestOutputConfigForMultiClassClassifier(),
/*timestamp=*/base::Time::Now(), /*model_version=*/1);
result_prefs_->SaveClientResultToPrefs(
kClientKey, metadata_utils::CreateClientResultFromPredResult(
saved_prediction_result,
/*timestamp=*/base::Time::Now()));
cached_result_provider_ =
std::make_unique<CachedResultProvider>(result_prefs_.get(), configs_);
std::optional<proto::PredictionResult> retrieved_prediction_result =
cached_result_provider_->GetPredictionResultForClient(kClientKey);
EXPECT_TRUE(retrieved_prediction_result.has_value());
EXPECT_EQ(saved_prediction_result.result_size(),
retrieved_prediction_result.value().result_size());
for (int i = 0; i < saved_prediction_result.result_size(); i++) {
EXPECT_EQ(saved_prediction_result.result(i),
retrieved_prediction_result.value().result(i));
}
}
TEST_F(CachedResultProviderTest, GetPredictionResultForClient_WithNoResult) {
cached_result_provider_ =
std::make_unique<CachedResultProvider>(result_prefs_.get(), configs_);
std::optional<proto::PredictionResult> retrieved_prediction_result =
cached_result_provider_->GetPredictionResultForClient(kClientKey);
EXPECT_FALSE(retrieved_prediction_result.has_value());
}
} // namespace segmentation_platform
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