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// Copyright 2017 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/assist_ranker/base_predictor.h"
#include <memory>
#include "base/functional/bind.h"
#include "base/functional/callback_helpers.h"
#include "base/metrics/field_trial_params.h"
#include "base/test/scoped_feature_list.h"
#include "base/test/task_environment.h"
#include "components/assist_ranker/fake_ranker_model_loader.h"
#include "components/assist_ranker/predictor_config.h"
#include "components/assist_ranker/proto/ranker_example.pb.h"
#include "components/assist_ranker/ranker_model.h"
#include "components/ukm/test_ukm_recorder.h"
#include "testing/gtest/include/gtest/gtest.h"
#include "url/gurl.h"
namespace assist_ranker {
using ::assist_ranker::testing::FakeRankerModelLoader;
namespace {
// Predictor config for testing.
const char kTestModelName[] = "test_model";
// This name needs to be an entry in ukm.xml
const char kTestLoggingName[] = "ContextualSearch";
const char kTestUmaPrefixName[] = "Test.Ranker";
const char kTestUrlParamName[] = "ranker-model-url";
const char kTestDefaultModelUrl[] = "https://foo.bar/model.bin";
const char kTestNavigationUrl[] = "https://foo.com";
const base::flat_set<std::string> kFeatureAllowlist;
BASE_FEATURE(kTestRankerQuery,
"TestRankerQuery",
base::FEATURE_ENABLED_BY_DEFAULT);
const base::FeatureParam<std::string> kTestRankerUrl{
&kTestRankerQuery, kTestUrlParamName, kTestDefaultModelUrl};
const PredictorConfig kTestPredictorConfig =
PredictorConfig{kTestModelName, kTestLoggingName,
kTestUmaPrefixName, LOG_UKM,
&kFeatureAllowlist, &kTestRankerQuery,
&kTestRankerUrl, kNoPredictThresholdReplacement};
// Class that implements virtual functions of the base class.
class FakePredictor : public BasePredictor {
public:
// Creates a |FakePredictor| using the default config (from this file).
static std::unique_ptr<FakePredictor> Create() {
return Create(kTestPredictorConfig);
}
// Creates a |FakePredictor| using the |PredictorConfig| passed in
// |predictor_config|.
static std::unique_ptr<FakePredictor> Create(
PredictorConfig predictor_config);
FakePredictor(const FakePredictor&) = delete;
FakePredictor& operator=(const FakePredictor&) = delete;
~FakePredictor() override {}
// Validation will always succeed.
static RankerModelStatus ValidateModel(const RankerModel& model) {
return RankerModelStatus::kOk;
}
protected:
// Not implementing any inference logic.
bool Initialize() override { return true; }
private:
FakePredictor(const PredictorConfig& config) : BasePredictor(config) {}
};
std::unique_ptr<FakePredictor> FakePredictor::Create(
PredictorConfig predictor_config) {
std::unique_ptr<FakePredictor> predictor(new FakePredictor(predictor_config));
auto ranker_model = std::make_unique<RankerModel>();
auto fake_model_loader = std::make_unique<FakeRankerModelLoader>(
base::BindRepeating(&FakePredictor::ValidateModel),
base::BindRepeating(&FakePredictor::OnModelAvailable,
base::Unretained(predictor.get())),
std::move(ranker_model));
predictor->LoadModel(std::move(fake_model_loader));
return predictor;
}
} // namespace
class BasePredictorTest : public ::testing::Test {
public:
BasePredictorTest(const BasePredictorTest&) = delete;
BasePredictorTest& operator=(const BasePredictorTest&) = delete;
protected:
BasePredictorTest() = default;
void SetUp() override;
ukm::SourceId GetSourceId();
ukm::TestUkmRecorder* GetTestUkmRecorder() { return &test_ukm_recorder_; }
private:
// Sets up the task scheduling/task-runner environment for each test.
base::test::TaskEnvironment task_environment_;
// Sets itself as the global UkmRecorder on construction.
ukm::TestAutoSetUkmRecorder test_ukm_recorder_;
// Manages the enabling/disabling of features within the scope of a test.
base::test::ScopedFeatureList scoped_feature_list_;
};
void BasePredictorTest::SetUp() {
::testing::Test::SetUp();
scoped_feature_list_.Init();
}
ukm::SourceId BasePredictorTest::GetSourceId() {
ukm::SourceId source_id = ukm::UkmRecorder::GetNewSourceID();
test_ukm_recorder_.UpdateSourceURL(source_id, GURL(kTestNavigationUrl));
return source_id;
}
TEST_F(BasePredictorTest, BaseTest) {
auto predictor = FakePredictor::Create();
EXPECT_EQ(kTestModelName, predictor->GetModelName());
EXPECT_EQ(kTestDefaultModelUrl, predictor->GetModelUrl());
EXPECT_TRUE(predictor->is_query_enabled());
EXPECT_TRUE(predictor->IsReady());
}
TEST_F(BasePredictorTest, QueryDisabled) {
base::test::ScopedFeatureList scoped_feature_list;
scoped_feature_list.InitAndDisableFeature(kTestRankerQuery);
auto predictor = FakePredictor::Create();
EXPECT_EQ(kTestModelName, predictor->GetModelName());
EXPECT_EQ(kTestDefaultModelUrl, predictor->GetModelUrl());
EXPECT_FALSE(predictor->is_query_enabled());
EXPECT_FALSE(predictor->IsReady());
}
TEST_F(BasePredictorTest, GetPredictThresholdReplacement) {
float altered_threshold = 0.78f; // Arbitrary value.
const PredictorConfig altered_threshold_config{
kTestModelName, kTestLoggingName, kTestUmaPrefixName,
LOG_UKM, &kFeatureAllowlist, &kTestRankerQuery,
&kTestRankerUrl, altered_threshold};
auto predictor = FakePredictor::Create(altered_threshold_config);
EXPECT_EQ(altered_threshold, predictor->GetPredictThresholdReplacement());
}
} // namespace assist_ranker
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