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// Copyright 2020 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "content/browser/attribution_reporting/attribution_resolver_delegate_impl.h"
#include <stdint.h>
#include <cmath>
#include <limits>
#include <optional>
#include <vector>
#include "base/containers/flat_map.h"
#include "base/time/time.h"
#include "components/attribution_reporting/event_report_windows.h"
#include "components/attribution_reporting/privacy_math.h"
#include "components/attribution_reporting/source_type.mojom.h"
#include "content/browser/attribution_reporting/attribution_report.h"
#include "content/browser/attribution_reporting/attribution_test_utils.h"
#include "content/browser/attribution_reporting/common_source_info.h"
#include "content/browser/attribution_reporting/stored_source.h"
#include "testing/gtest/include/gtest/gtest.h"
namespace content {
namespace {
using ::attribution_reporting::EventReportWindows;
using ::attribution_reporting::mojom::SourceType;
using ::testing::AllOf;
using ::testing::Ge;
using ::testing::IsEmpty;
using ::testing::Le;
using ::testing::Lt;
using ::testing::SizeIs;
// This is more comprehensively tested in
// //components/attribution_reporting/event_report_windows_unittest.cc.
TEST(AttributionResolverDelegateImplTest, GetEventLevelReportTime) {
constexpr base::Time kSourceTime;
constexpr base::Time kTriggerTime = kSourceTime + base::Seconds(1);
constexpr base::TimeDelta kEnd = base::Days(3);
EXPECT_EQ(kSourceTime + kEnd,
AttributionResolverDelegateImpl().GetEventLevelReportTime(
*EventReportWindows::Create(/*start_time=*/base::Seconds(0),
/*end_times=*/{kEnd}),
kSourceTime, kTriggerTime));
}
TEST(AttributionResolverDelegateImplTest, GetAggregatableReportTime) {
base::Time trigger_time = base::Time::Now();
EXPECT_THAT(
AttributionResolverDelegateImpl().GetAggregatableReportTime(trigger_time),
AllOf(Ge(trigger_time), Lt(trigger_time + base::Minutes(10))));
}
TEST(AttributionResolverDelegateImplTest, NewReportID_IsValidGUID) {
EXPECT_TRUE(AttributionResolverDelegateImpl().NewReportID().is_valid());
}
TEST(AttributionResolverDelegateImplTest,
RandomizedResponse_NoNoiseModeReturnsRealRateAndNullResponse) {
for (auto source_type : {SourceType::kNavigation, SourceType::kEvent}) {
const auto source =
SourceBuilder()
.SetSourceType(source_type)
.SetMaxEventLevelReports(
source_type ==
attribution_reporting::mojom::SourceType::kNavigation
? 3
: 1)
.BuildStored();
auto result =
AttributionResolverDelegateImpl(AttributionNoiseMode::kNone)
.GetRandomizedResponse(
source.common_info().source_type(), source.trigger_data(),
source.event_report_windows(), source.max_event_level_reports(),
source.event_level_epsilon(),
/*attribution_scope_data=*/std::nullopt);
ASSERT_TRUE(result.has_value());
ASSERT_GT(result->rate(), 0);
ASSERT_EQ(result->response(), std::nullopt);
}
}
TEST(AttributionResolverDelegateImplTest,
RandomizedResponse_ExceedsLimit_ReturnsError) {
const struct {
SourceType source_type;
double max_navigation_info_gain = std::numeric_limits<double>::infinity();
double max_event_info_gain = std::numeric_limits<double>::infinity();
bool expected_ok;
} kTestCases[] = {
{
.source_type = SourceType::kNavigation,
.max_event_info_gain = 0.1,
.expected_ok = true,
},
{
.source_type = SourceType::kNavigation,
.max_navigation_info_gain = 0.1,
.expected_ok = false,
},
{
.source_type = SourceType::kEvent,
.max_navigation_info_gain = 0.1,
.expected_ok = true,
},
{
.source_type = SourceType::kEvent,
.max_event_info_gain = 0.1,
.expected_ok = false,
},
};
for (const auto& test_case : kTestCases) {
AttributionConfig config;
config.privacy_math_config.max_channel_capacity_navigation =
test_case.max_navigation_info_gain;
config.privacy_math_config.max_channel_capacity_event =
test_case.max_event_info_gain;
auto delegate = AttributionResolverDelegateImpl::CreateForTesting(
AttributionNoiseMode::kDefault, AttributionDelayMode::kDefault, config);
const auto source =
SourceBuilder().SetSourceType(test_case.source_type).BuildStored();
auto result = delegate->GetRandomizedResponse(
test_case.source_type, source.trigger_data(),
source.event_report_windows(), source.max_event_level_reports(),
source.event_level_epsilon(),
/*attribution_scope_data=*/std::nullopt);
EXPECT_EQ(result.has_value(), test_case.expected_ok);
}
}
} // namespace
} // namespace content
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