// 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 "chromecast/base/cast_features.h"
#include "base/metrics/field_trial_params.h"
#include "base/values.h"
#include "testing/gmock/include/gmock/gmock.h"
#include "testing/gtest/include/gtest/gtest.h"
namespace chromecast {
namespace {
const char kTestBooleanFeatureName[] = "test_boolean_feature";
const char kTestBooleanFeatureName2[] = "test_boolean_feature_2";
const char kTestBooleanFeatureName3[] = "test_boolean_feature_3";
const char kTestBooleanFeatureName4[] = "test_boolean_feature_4";
const char kTestParamsFeatureName[] = "test_params_feature";
} // namespace
class CastFeaturesTest : public testing::Test {
public:
CastFeaturesTest() {}
CastFeaturesTest(const CastFeaturesTest&) = delete;
CastFeaturesTest& operator=(const CastFeaturesTest&) = delete;
~CastFeaturesTest() override {}
// testing::Test implementation:
void SetUp() override {
original_feature_list_ = base::FeatureList::ClearInstanceForTesting();
ResetCastFeaturesForTesting();
}
void TearDown() override {
ResetCastFeaturesForTesting();
base::FeatureList::RestoreInstanceForTesting(
std::move(original_feature_list_));
}
private:
std::unique_ptr<base::FeatureList> original_feature_list_;
};
TEST_F(CastFeaturesTest, EnableDisableMultipleBooleanFeatures) {
// Declare several boolean features.
static BASE_FEATURE(bool_feature, kTestBooleanFeatureName,
base::FEATURE_DISABLED_BY_DEFAULT);
static BASE_FEATURE(bool_feature_2, kTestBooleanFeatureName2,
base::FEATURE_ENABLED_BY_DEFAULT);
static BASE_FEATURE(bool_feature_3, kTestBooleanFeatureName3,
base::FEATURE_DISABLED_BY_DEFAULT);
static BASE_FEATURE(bool_feature_4, kTestBooleanFeatureName4,
base::FEATURE_ENABLED_BY_DEFAULT);
// Properly register them
chromecast::SetFeaturesForTest(
{&bool_feature, &bool_feature_2, &bool_feature_3, &bool_feature_4});
// Override those features with DCS configs.
base::Value::List experiments;
base::Value::Dict features;
features.Set(kTestBooleanFeatureName, false);
features.Set(kTestBooleanFeatureName2, false);
features.Set(kTestBooleanFeatureName3, true);
features.Set(kTestBooleanFeatureName4, true);
InitializeFeatureList(features, experiments, "", "", "", "");
// Test that features are properly enabled (they should match the
// DCS config).
ASSERT_FALSE(chromecast::IsFeatureEnabled(bool_feature));
ASSERT_FALSE(chromecast::IsFeatureEnabled(bool_feature_2));
ASSERT_TRUE(chromecast::IsFeatureEnabled(bool_feature_3));
ASSERT_TRUE(chromecast::IsFeatureEnabled(bool_feature_4));
}
TEST_F(CastFeaturesTest, EnableSingleFeatureWithParams) {
// Define a feature with params.
static BASE_FEATURE(test_feature, kTestParamsFeatureName,
base::FEATURE_DISABLED_BY_DEFAULT);
chromecast::SetFeaturesForTest({&test_feature});
// Pass params via DCS.
base::Value::List experiments;
base::Value::Dict features;
base::Value::Dict params;
params.Set("foo_key", "foo");
params.Set("bar_key", "bar");
params.Set("doub_key", "3.14159");
params.Set("long_doub_key", "1.23459999999999999");
params.Set("int_key", "4242");
params.Set("bool_key", "true");
features.Set(kTestParamsFeatureName, std::move(params));
InitializeFeatureList(features, experiments, "", "", "", "");
// Test that this feature is enabled, and params are correct.
ASSERT_TRUE(chromecast::IsFeatureEnabled(test_feature));
ASSERT_EQ("foo",
base::GetFieldTrialParamValueByFeature(test_feature, "foo_key"));
ASSERT_EQ("bar",
base::GetFieldTrialParamValueByFeature(test_feature, "bar_key"));
ASSERT_EQ(3.14159, base::GetFieldTrialParamByFeatureAsDouble(
test_feature, "doub_key", 0.000));
ASSERT_EQ(1.23459999999999999, base::GetFieldTrialParamByFeatureAsDouble(
test_feature, "long_doub_key", 0.000));
ASSERT_EQ(4242, base::GetFieldTrialParamByFeatureAsInt(test_feature,
"int_key", -1));
ASSERT_EQ(true, base::GetFieldTrialParamByFeatureAsBool(test_feature,
"bool_key", false));
}
TEST_F(CastFeaturesTest, CommandLineOverridesDcsAndDefault) {
// Declare several boolean features.
static BASE_FEATURE(bool_feature, kTestBooleanFeatureName,
base::FEATURE_DISABLED_BY_DEFAULT);
static BASE_FEATURE(bool_feature_2, kTestBooleanFeatureName2,
base::FEATURE_ENABLED_BY_DEFAULT);
static BASE_FEATURE(bool_feature_3, kTestBooleanFeatureName3,
base::FEATURE_DISABLED_BY_DEFAULT);
static BASE_FEATURE(bool_feature_4, kTestBooleanFeatureName4,
base::FEATURE_ENABLED_BY_DEFAULT);
// Override those features with DCS configs.
base::Value::List experiments;
base::Value::Dict features;
features.Set(kTestBooleanFeatureName, false);
features.Set(kTestBooleanFeatureName2, false);
features.Set(kTestBooleanFeatureName3, true);
features.Set(kTestBooleanFeatureName4, true);
// Also override a param feature with DCS config.
static BASE_FEATURE(params_feature, kTestParamsFeatureName,
base::FEATURE_ENABLED_BY_DEFAULT);
chromecast::SetFeaturesForTest({&bool_feature, &bool_feature_2,
&bool_feature_3, &bool_feature_4,
¶ms_feature});
base::Value::Dict params;
params.Set("foo_key", "foo");
features.Set(kTestParamsFeatureName, std::move(params));
// Now override with command line flags. Command line flags should have the
// final say.
std::string enabled_features = std::string(kTestBooleanFeatureName)
.append(",")
.append(kTestBooleanFeatureName2);
std::string disabled_features = std::string(kTestBooleanFeatureName4)
.append(",")
.append(kTestParamsFeatureName);
InitializeFeatureList(features, experiments, enabled_features,
disabled_features, "", "");
// Test that features are properly enabled (they should match the
// DCS config).
ASSERT_TRUE(chromecast::IsFeatureEnabled(bool_feature));
ASSERT_TRUE(chromecast::IsFeatureEnabled(bool_feature_2));
ASSERT_TRUE(chromecast::IsFeatureEnabled(bool_feature_3));
ASSERT_FALSE(chromecast::IsFeatureEnabled(bool_feature_4));
// Test that the params feature is disabled, and params are not set.
ASSERT_FALSE(chromecast::IsFeatureEnabled(params_feature));
ASSERT_EQ("",
base::GetFieldTrialParamValueByFeature(params_feature, "foo_key"));
}
TEST_F(CastFeaturesTest, SetEmptyExperiments) {
// Override those features with DCS configs.
base::Value::List experiments;
base::Value::Dict features;
InitializeFeatureList(features, experiments, "", "", "", "");
ASSERT_EQ(0u, GetDCSExperimentIds().size());
}
TEST_F(CastFeaturesTest, SetGoodExperiments) {
// Override those features with DCS configs.
base::Value::List experiments;
base::Value::Dict features;
int32_t ids[] = {12345678, 123, 0, -1};
std::unordered_set<int32_t> expected;
for (int32_t id : ids) {
experiments.Append(id);
expected.insert(id);
}
InitializeFeatureList(features, experiments, "", "", "", "");
ASSERT_EQ(expected, GetDCSExperimentIds());
}
TEST_F(CastFeaturesTest, SetSomeGoodExperiments) {
// Override those features with DCS configs.
base::Value::List experiments;
base::Value::Dict features;
experiments.Append(1234);
experiments.Append("foobar");
experiments.Append(true);
experiments.Append(1);
experiments.Append(1.23456);
std::unordered_set<int32_t> expected;
expected.insert(1234);
expected.insert(1);
InitializeFeatureList(features, experiments, "", "", "", "");
ASSERT_EQ(expected, GetDCSExperimentIds());
}
TEST_F(CastFeaturesTest, SetAllBadExperiments) {
// Override those features with DCS configs.
base::Value::List experiments;
base::Value::Dict features;
experiments.Append("foobar");
experiments.Append(true);
experiments.Append(1.23456);
std::unordered_set<int32_t> expected;
InitializeFeatureList(features, experiments, "", "", "", "");
ASSERT_EQ(expected, GetDCSExperimentIds());
}
TEST_F(CastFeaturesTest, GetOverriddenFeaturesForStorage) {
base::Value::Dict features;
features.Set("bool_key", false);
features.Set("bool_key_2", true);
base::Value::Dict params;
params.Set("foo_key", "foo");
params.Set("bar_key", "bar");
params.Set("doub_key", 3.14159);
params.Set("long_doub_key", 1.234599999999999);
params.Set("int_key", 4242);
params.Set("negint_key", -273);
params.Set("bool_key", true);
features.Set("params_key", std::move(params));
auto dict = GetOverriddenFeaturesForStorage(features);
ASSERT_EQ(3u, dict.size());
auto bval = dict.FindBool("bool_key");
ASSERT_TRUE(bval.has_value());
ASSERT_EQ(false, *bval);
bval = dict.FindBool("bool_key_2");
ASSERT_TRUE(bval.has_value());
ASSERT_EQ(true, *bval);
const auto* dval = dict.FindDict("params_key");
const std::string* sval = nullptr;
ASSERT_TRUE(dval);
ASSERT_EQ(7u, dval->size());
sval = dval->FindString("foo_key");
ASSERT_TRUE(sval);
ASSERT_EQ("foo", *sval);
sval = dval->FindString("bar_key");
ASSERT_TRUE(sval);
ASSERT_EQ("bar", *sval);
sval = dval->FindString("doub_key");
ASSERT_TRUE(sval);
ASSERT_EQ("3.14159", *sval);
sval = dval->FindString("long_doub_key");
ASSERT_TRUE(sval);
ASSERT_EQ("1.234599999999999", *sval);
sval = dval->FindString("int_key");
ASSERT_TRUE(sval);
ASSERT_EQ("4242", *sval);
sval = dval->FindString("negint_key");
ASSERT_TRUE(sval);
ASSERT_EQ("-273", *sval);
sval = dval->FindString("bool_key");
ASSERT_TRUE(sval);
ASSERT_EQ("true", *sval);
}
TEST_F(CastFeaturesTest, GetOverriddenFeaturesForStorage_BadParams) {
base::Value::Dict features;
features.Set("bool_key", false);
features.Set("str_key", "foobar");
features.Set("int_key", 12345);
features.Set("doub_key", 4.5678);
base::Value::Dict params;
params.Set("foo_key", "foo");
features.Set("params_key", std::move(params));
auto dict = GetOverriddenFeaturesForStorage(features);
ASSERT_EQ(2u, dict.size());
auto bval = dict.FindBool("bool_key");
ASSERT_TRUE(bval.has_value());
ASSERT_EQ(false, *bval);
const auto* dval = dict.FindDict("params_key");
ASSERT_TRUE(dval);
ASSERT_EQ(1u, dval->size());
const auto* sval = dval->FindString("foo_key");
ASSERT_TRUE(sval);
ASSERT_EQ("foo", *sval);
}
} // namespace chromecast
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