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// Copyright 2024 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/sync/service/trusted_vault_synthetic_field_trial.h"
#include <string>
#include "base/strings/stringprintf.h"
#include "base/test/metrics/histogram_tester.h"
#include "components/sync/protocol/nigori_specifics.pb.h"
#include "google_apis/gaia/gaia_id.h"
#include "testing/gmock/include/gmock/gmock.h"
#include "testing/gtest/include/gtest/gtest.h"
namespace syncer {
namespace {
using testing::Eq;
using testing::FloatNear;
using testing::IsEmpty;
MATCHER(IsNotValid, "") {
return !arg.is_valid();
}
MATCHER_P(IsValidWithName, expected_name, "") {
return arg.is_valid() && arg.name() == expected_name;
}
sync_pb::TrustedVaultAutoUpgradeExperimentGroup BuildTestProto(
int cohort,
sync_pb::TrustedVaultAutoUpgradeExperimentGroup::Type type,
int type_index) {
sync_pb::TrustedVaultAutoUpgradeExperimentGroup proto;
proto.set_cohort(cohort);
proto.set_type(type);
proto.set_type_index(type_index);
return proto;
}
TEST(TrustedVaultSyntheticFieldTrialTest, ShouldBuildInvalidGroup) {
EXPECT_THAT(
TrustedVaultAutoUpgradeSyntheticFieldTrialGroup::FromProto(BuildTestProto(
/*cohort=*/1,
sync_pb::TrustedVaultAutoUpgradeExperimentGroup::TYPE_UNSPECIFIED,
/*type_index=*/0)),
IsNotValid());
EXPECT_THAT(
TrustedVaultAutoUpgradeSyntheticFieldTrialGroup::FromProto(BuildTestProto(
/*cohort=*/0,
sync_pb::TrustedVaultAutoUpgradeExperimentGroup::CONTROL,
/*type_index=*/0)),
IsNotValid());
EXPECT_THAT(
TrustedVaultAutoUpgradeSyntheticFieldTrialGroup::FromProto(BuildTestProto(
/*cohort=*/-1,
sync_pb::TrustedVaultAutoUpgradeExperimentGroup::CONTROL,
/*type_index=*/0)),
IsNotValid());
EXPECT_THAT(
TrustedVaultAutoUpgradeSyntheticFieldTrialGroup::FromProto(BuildTestProto(
/*cohort=*/101,
sync_pb::TrustedVaultAutoUpgradeExperimentGroup::CONTROL,
/*type_index=*/0)),
IsNotValid());
EXPECT_THAT(
TrustedVaultAutoUpgradeSyntheticFieldTrialGroup::FromProto(BuildTestProto(
/*cohort=*/6,
sync_pb::TrustedVaultAutoUpgradeExperimentGroup::CONTROL,
/*type_index=*/-1)),
IsNotValid());
EXPECT_THAT(
TrustedVaultAutoUpgradeSyntheticFieldTrialGroup::FromProto(BuildTestProto(
/*cohort=*/6,
sync_pb::TrustedVaultAutoUpgradeExperimentGroup::CONTROL,
/*type_index=*/51)),
IsNotValid());
}
TEST(TrustedVaultSyntheticFieldTrialTest,
ShouldBuildInvalidGroupFromProtoDefaults) {
EXPECT_THAT(TrustedVaultAutoUpgradeSyntheticFieldTrialGroup::FromProto(
sync_pb::TrustedVaultAutoUpgradeExperimentGroup()),
IsNotValid());
}
TEST(TrustedVaultSyntheticFieldTrialTest, ShouldGetValidGroupName) {
EXPECT_THAT(
TrustedVaultAutoUpgradeSyntheticFieldTrialGroup::FromProto(BuildTestProto(
/*cohort=*/5,
sync_pb::TrustedVaultAutoUpgradeExperimentGroup::TREATMENT,
/*type_index=*/0)),
IsValidWithName("Cohort5_Treatment"));
EXPECT_THAT(
TrustedVaultAutoUpgradeSyntheticFieldTrialGroup::FromProto(BuildTestProto(
/*cohort=*/6,
sync_pb::TrustedVaultAutoUpgradeExperimentGroup::CONTROL,
/*type_index=*/0)),
IsValidWithName("Cohort6_Control"));
EXPECT_THAT(
TrustedVaultAutoUpgradeSyntheticFieldTrialGroup::FromProto(BuildTestProto(
/*cohort=*/7,
sync_pb::TrustedVaultAutoUpgradeExperimentGroup::VALIDATION,
/*type_index=*/0)),
IsValidWithName("Cohort7_Validation"));
}
TEST(TrustedVaultSyntheticFieldTrialTest,
ShouldGetValidGroupNameWithTypeIndex) {
EXPECT_THAT(
TrustedVaultAutoUpgradeSyntheticFieldTrialGroup::FromProto(BuildTestProto(
/*cohort=*/5,
sync_pb::TrustedVaultAutoUpgradeExperimentGroup::TREATMENT,
/*type_index=*/1)),
IsValidWithName("Cohort5_Treatment1"));
EXPECT_THAT(
TrustedVaultAutoUpgradeSyntheticFieldTrialGroup::FromProto(BuildTestProto(
/*cohort=*/6,
sync_pb::TrustedVaultAutoUpgradeExperimentGroup::CONTROL,
/*type_index=*/2)),
IsValidWithName("Cohort6_Control2"));
EXPECT_THAT(
TrustedVaultAutoUpgradeSyntheticFieldTrialGroup::FromProto(BuildTestProto(
/*cohort=*/7,
sync_pb::TrustedVaultAutoUpgradeExperimentGroup::VALIDATION,
/*type_index=*/3)),
IsValidWithName("Cohort7_Validation3"));
EXPECT_THAT(
TrustedVaultAutoUpgradeSyntheticFieldTrialGroup::FromProto(BuildTestProto(
/*cohort=*/8,
sync_pb::TrustedVaultAutoUpgradeExperimentGroup::VALIDATION,
/*type_index=*/50)),
IsValidWithName("Cohort8_Validation50"));
}
TEST(TrustedVaultSyntheticFieldTrialTest,
ShouldProduceDeterministicFloatBetweenZeroAndOneFromGaiaId) {
// Tolerance used in case floating point operations may differ slightly across
// platforms.
const float kEpsilon = 1E-6f;
// Expected values have been computed empirically. They are all between zero
// and one as expected and appear to be uniformly distributed.
struct {
std::string gaia_id_str;
std::string salt;
float expected_value;
} test_cases[] = {
{"gaia_id_1", "salt1", 0.18181f},
{"gaia_id_2", "salt1", 0.46258f},
{"gaia_id_3", "salt1", 0.08043f},
{"gaia_id_3", "salt2", 0.82853f},
{"gaia_id_3", "salt3", 0.10936f},
{"gaia_id_3", "", 0.76956f},
// Specific value used in other tests (found empirically).
{"gaia_id_49", "UserSampling", 0.00543f},
{"gaia_id_49", "OnProfileLoadSampled", 0.05258f},
};
for (const auto& test_case : test_cases) {
EXPECT_THAT(TrustedVaultAutoUpgradeSyntheticFieldTrialGroup::
DeterministicFloatBetweenZeroAndOneFromGaiaIdForTest(
GaiaId(test_case.gaia_id_str), test_case.salt),
FloatNear(test_case.expected_value, kEpsilon))
<< " for " << test_case.gaia_id_str << " and salt " << test_case.salt;
}
}
TEST(TrustedVaultSyntheticFieldTrialTest,
ShouldSampleGaiaIdsWithTenPercentProbability) {
const int kNumGaiaIdsToTest = 50;
int num_sampled_gaia_ids = 0;
for (int i = 0; i < kNumGaiaIdsToTest; i++) {
if (TrustedVaultAutoUpgradeSyntheticFieldTrialGroup::
ShouldSampleGaiaIdWithTenPercentProbabilityForTest(
GaiaId(base::StringPrintf("gaia_id_%d", i)))) {
num_sampled_gaia_ids++;
}
}
// About 10% of the gaia IDs should have returned true (i.e. should be
// sampled). In this case, as empirically observed, it is off by one.
EXPECT_THAT(num_sampled_gaia_ids, Eq(kNumGaiaIdsToTest / 10 + 1));
}
TEST(TrustedVaultSyntheticFieldTrialTest,
ShouldLogValidationMetricsUponOnProfileLoad) {
const int kCohort = 6; // Not relevant in this test.
const int kTypeIndex = 7; // Not relevant in this test.
const auto control_group =
TrustedVaultAutoUpgradeSyntheticFieldTrialGroup::FromProto(BuildTestProto(
kCohort, sync_pb::TrustedVaultAutoUpgradeExperimentGroup::CONTROL,
kTypeIndex));
const auto validation_group =
TrustedVaultAutoUpgradeSyntheticFieldTrialGroup::FromProto(BuildTestProto(
kCohort, sync_pb::TrustedVaultAutoUpgradeExperimentGroup::VALIDATION,
kTypeIndex));
// String chosen from previous tests, given the convenient float value
// computed from it.
const GaiaId kGaiaId("gaia_id_49");
ASSERT_TRUE(TrustedVaultAutoUpgradeSyntheticFieldTrialGroup::
ShouldSampleGaiaIdWithTenPercentProbabilityForTest(kGaiaId));
ASSERT_THAT(TrustedVaultAutoUpgradeSyntheticFieldTrialGroup::
DeterministicFloatBetweenZeroAndOneFromGaiaIdForTest(
kGaiaId, /*salt=*/"OnProfileLoadSampled"),
FloatNear(0.05258f, 1E-6));
// Control group.
{
base::HistogramTester tester;
control_group.LogValidationMetricsUponOnProfileLoad(kGaiaId);
// Metrics with account consistency record a deterministic bucket.
tester.ExpectUniqueSample(
"Sync.TrustedVaultAutoUpgrade.Validation.OnProfileLoadSampled."
"WithAccountConsistency.Binary_C01_V01",
false, /*expected_bucket_count=*/1);
tester.ExpectUniqueSample(
"Sync.TrustedVaultAutoUpgrade.Validation.OnProfileLoadSampled."
"WithAccountConsistency.Binary_C01_V04",
false, /*expected_bucket_count=*/1);
tester.ExpectUniqueSample(
"Sync.TrustedVaultAutoUpgrade.Validation.OnProfileLoadSampled."
"WithAccountConsistency.Binary_C01_V06",
false, /*expected_bucket_count=*/1);
tester.ExpectUniqueSample(
"Sync.TrustedVaultAutoUpgrade.Validation.OnProfileLoadSampled."
"WithAccountConsistency.Binary_C01_V09",
false, /*expected_bucket_count=*/1);
// Thresholds larger than 0.05258f record `true`.
tester.ExpectUniqueSample(
"Sync.TrustedVaultAutoUpgrade.Validation.OnProfileLoadSampled."
"WithAccountConsistency.Binary_C20_V20",
true, /*expected_bucket_count=*/1);
tester.ExpectUniqueSample(
"Sync.TrustedVaultAutoUpgrade.Validation.OnProfileLoadSampled."
"WithAccountConsistency.Binary_C20_V23",
true, /*expected_bucket_count=*/1);
tester.ExpectUniqueSample(
"Sync.TrustedVaultAutoUpgrade.Validation.OnProfileLoadSampled."
"WithAccountConsistency.Binary_C20_V25",
true, /*expected_bucket_count=*/1);
tester.ExpectUniqueSample(
"Sync.TrustedVaultAutoUpgrade.Validation.OnProfileLoadSampled."
"WithAccountConsistency.Binary_C20_V28",
true, /*expected_bucket_count=*/1);
tester.ExpectUniqueSample(
"Sync.TrustedVaultAutoUpgrade.Validation.OnProfileLoadSampled."
"WithAccountConsistency.Binary_C50_V50",
true, /*expected_bucket_count=*/1);
tester.ExpectUniqueSample(
"Sync.TrustedVaultAutoUpgrade.Validation.OnProfileLoadSampled."
"WithAccountConsistency.Binary_C50_V53",
true, /*expected_bucket_count=*/1);
tester.ExpectUniqueSample(
"Sync.TrustedVaultAutoUpgrade.Validation.OnProfileLoadSampled."
"WithAccountConsistency.Binary_C50_V55",
true, /*expected_bucket_count=*/1);
tester.ExpectUniqueSample(
"Sync.TrustedVaultAutoUpgrade.Validation.OnProfileLoadSampled."
"WithAccountConsistency.Binary_C50_V58",
true, /*expected_bucket_count=*/1);
// Metrics without account consistency are known to record one value, but
// the value is random.
tester.ExpectTotalCount(
"Sync.TrustedVaultAutoUpgrade.Validation.OnProfileLoadSampled."
"WithoutAccountConsistency.Binary_C01_V01",
1);
tester.ExpectTotalCount(
"Sync.TrustedVaultAutoUpgrade.Validation.OnProfileLoadSampled."
"WithoutAccountConsistency.Binary_C01_V04",
1);
tester.ExpectTotalCount(
"Sync.TrustedVaultAutoUpgrade.Validation.OnProfileLoadSampled."
"WithoutAccountConsistency.Binary_C01_V06",
1);
tester.ExpectTotalCount(
"Sync.TrustedVaultAutoUpgrade.Validation.OnProfileLoadSampled."
"WithoutAccountConsistency.Binary_C01_V09",
1);
tester.ExpectTotalCount(
"Sync.TrustedVaultAutoUpgrade.Validation.OnProfileLoadSampled."
"WithoutAccountConsistency.Binary_C20_V20",
1);
tester.ExpectTotalCount(
"Sync.TrustedVaultAutoUpgrade.Validation.OnProfileLoadSampled."
"WithoutAccountConsistency.Binary_C20_V23",
1);
tester.ExpectTotalCount(
"Sync.TrustedVaultAutoUpgrade.Validation.OnProfileLoadSampled."
"WithoutAccountConsistency.Binary_C20_V25",
1);
tester.ExpectTotalCount(
"Sync.TrustedVaultAutoUpgrade.Validation.OnProfileLoadSampled."
"WithoutAccountConsistency.Binary_C20_V28",
1);
tester.ExpectTotalCount(
"Sync.TrustedVaultAutoUpgrade.Validation.OnProfileLoadSampled."
"WithoutAccountConsistency.Binary_C50_V50",
1);
tester.ExpectTotalCount(
"Sync.TrustedVaultAutoUpgrade.Validation.OnProfileLoadSampled."
"WithoutAccountConsistency.Binary_C50_V53",
1);
tester.ExpectTotalCount(
"Sync.TrustedVaultAutoUpgrade.Validation.OnProfileLoadSampled."
"WithoutAccountConsistency.Binary_C50_V55",
1);
tester.ExpectTotalCount(
"Sync.TrustedVaultAutoUpgrade.Validation.OnProfileLoadSampled."
"WithoutAccountConsistency.Binary_C50_V58",
1);
}
// Validation group.
{
base::HistogramTester tester;
validation_group.LogValidationMetricsUponOnProfileLoad(kGaiaId);
// Metrics with account consistency record a deterministic bucket.
tester.ExpectUniqueSample(
"Sync.TrustedVaultAutoUpgrade.Validation.OnProfileLoadSampled."
"WithAccountConsistency.Binary_C01_V01",
false, /*expected_bucket_count=*/1);
tester.ExpectUniqueSample(
"Sync.TrustedVaultAutoUpgrade.Validation.OnProfileLoadSampled."
"WithAccountConsistency.Binary_C01_V04",
false, /*expected_bucket_count=*/1);
// Thresholds larger than 0.05258f record `true`. Note that this includes
// two additional metrics compared to control group tested earlier.
tester.ExpectUniqueSample(
"Sync.TrustedVaultAutoUpgrade.Validation.OnProfileLoadSampled."
"WithAccountConsistency.Binary_C01_V06",
true, /*expected_bucket_count=*/1);
tester.ExpectUniqueSample(
"Sync.TrustedVaultAutoUpgrade.Validation.OnProfileLoadSampled."
"WithAccountConsistency.Binary_C01_V09",
true, /*expected_bucket_count=*/1);
tester.ExpectUniqueSample(
"Sync.TrustedVaultAutoUpgrade.Validation.OnProfileLoadSampled."
"WithAccountConsistency.Binary_C20_V20",
true, /*expected_bucket_count=*/1);
tester.ExpectUniqueSample(
"Sync.TrustedVaultAutoUpgrade.Validation.OnProfileLoadSampled."
"WithAccountConsistency.Binary_C20_V23",
true, /*expected_bucket_count=*/1);
tester.ExpectUniqueSample(
"Sync.TrustedVaultAutoUpgrade.Validation.OnProfileLoadSampled."
"WithAccountConsistency.Binary_C20_V25",
true, /*expected_bucket_count=*/1);
tester.ExpectUniqueSample(
"Sync.TrustedVaultAutoUpgrade.Validation.OnProfileLoadSampled."
"WithAccountConsistency.Binary_C20_V28",
true, /*expected_bucket_count=*/1);
tester.ExpectUniqueSample(
"Sync.TrustedVaultAutoUpgrade.Validation.OnProfileLoadSampled."
"WithAccountConsistency.Binary_C50_V50",
true, /*expected_bucket_count=*/1);
tester.ExpectUniqueSample(
"Sync.TrustedVaultAutoUpgrade.Validation.OnProfileLoadSampled."
"WithAccountConsistency.Binary_C50_V53",
true, /*expected_bucket_count=*/1);
tester.ExpectUniqueSample(
"Sync.TrustedVaultAutoUpgrade.Validation.OnProfileLoadSampled."
"WithAccountConsistency.Binary_C50_V55",
true, /*expected_bucket_count=*/1);
tester.ExpectUniqueSample(
"Sync.TrustedVaultAutoUpgrade.Validation.OnProfileLoadSampled."
"WithAccountConsistency.Binary_C50_V58",
true, /*expected_bucket_count=*/1);
}
}
TEST(TrustedVaultSyntheticFieldTrialTest,
ShouldNotLogValidationMetricsUponOnProfileLoadDueToSampling) {
const int kCohort = 6; // Not relevant in this test.
const int kTypeIndex = 7; // Not relevant in this test.
const auto control_group =
TrustedVaultAutoUpgradeSyntheticFieldTrialGroup::FromProto(BuildTestProto(
kCohort, sync_pb::TrustedVaultAutoUpgradeExperimentGroup::CONTROL,
kTypeIndex));
const auto validation_group =
TrustedVaultAutoUpgradeSyntheticFieldTrialGroup::FromProto(BuildTestProto(
kCohort, sync_pb::TrustedVaultAutoUpgradeExperimentGroup::VALIDATION,
kTypeIndex));
// String chosen from previous tests.
const GaiaId kGaiaId("gaia_id_1");
ASSERT_FALSE(TrustedVaultAutoUpgradeSyntheticFieldTrialGroup::
ShouldSampleGaiaIdWithTenPercentProbabilityForTest(kGaiaId));
base::HistogramTester tester;
control_group.LogValidationMetricsUponOnProfileLoad(kGaiaId);
validation_group.LogValidationMetricsUponOnProfileLoad(kGaiaId);
// As per ASSERT_FALSE above, `kGaiaId` should be filtered out during sampling
// and therefore no histograms should be recorded.
EXPECT_THAT(tester.GetTotalCountsForPrefix("Sync."), IsEmpty());
}
} // namespace
} // namespace syncer
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