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// Copyright 2025 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "chrome/browser/ui/webui/privacy_sandbox/privacy_sandbox_internals_handler.h"
#include "base/test/bind.h"
#include "base/test/test_future.h"
#include "chrome/browser/prefs/browser_prefs.h"
#include "chrome/browser/ui/webui/privacy_sandbox/privacy_sandbox_internals.mojom.h"
#include "chrome/test/base/testing_profile.h"
#include "components/prefs/pref_registry_simple.h"
#include "components/prefs/pref_service.h"
#include "components/prefs/testing_pref_service.h"
#include "components/sync_preferences/testing_pref_service_syncable.h"
#include "content/public/test/browser_task_environment.h"
#include "mojo/public/cpp/bindings/remote.h"
#include "mojo/public/cpp/system/functions.h"
#include "testing/gmock/include/gmock/gmock-matchers.h"
namespace privacy_sandbox_internals {
namespace {
using ::testing::_;
using ::testing::AllOf;
using ::testing::Each;
using ::testing::Field;
using ::testing::Pointee;
using ::testing::Property;
using ::testing::StartsWith;
using ::testing::StrEq;
using ReadPrefsWithPrefixesResultType = std::vector<
privacy_sandbox_internals::mojom::PrivacySandboxInternalsPrefPtr>;
static const char kPrefixA[] = "foo.bar";
static const char kPrefixB[] = "bar.foo";
static const char kShortPrefixA[] = "foo";
static std::vector<std::string> kPrefixAPrefNames = {"foo.bar.baz1",
"foo.bar.baz2"};
static std::vector<std::string> kPrefixBPrefNames = {
"bar.foo.moo1", "bar.foo.moo2", "bar.foo.moo3"};
static std::vector<std::string> kPrefixCPrefNames = {"moo.foo.baz"};
static const char kPrefAValue[] = "This is a prefix A pref value ";
static const char kPrefBValue[] = "This is a prefix B pref value ";
static const char kPrefCValue[] = "This is a prefix C pref value ";
class PrivacySandboxInternalsHandlerUnitTest : public testing::Test {
public:
PrivacySandboxInternalsHandlerUnitTest()
: browser_task_environment_(
base::test::TaskEnvironment::TimeSource::MOCK_TIME) {}
void SetUp() override {
auto prefs_ =
std::make_unique<sync_preferences::TestingPrefServiceSyncable>();
RegisterUserProfilePrefs(prefs_->registry());
RegisterTestPrefs(prefs_->registry());
TestingProfile::Builder builder;
builder.SetPrefService(std::move(prefs_));
profile_ = builder.Build();
handler_ = std::make_unique<PrivacySandboxInternalsHandler>(
profile_.get(), remote_.BindNewPipeAndPassReceiver());
}
void RegisterTestPrefs(PrefRegistrySimple* registry) {
for (auto prefName : kPrefixAPrefNames) {
registry->RegisterStringPref(prefName, kPrefAValue);
}
for (auto prefName : kPrefixBPrefNames) {
registry->RegisterStringPref(prefName, kPrefBValue);
}
for (auto prefName : kPrefixCPrefNames) {
registry->RegisterStringPref(prefName, kPrefCValue);
}
}
protected:
content::BrowserTaskEnvironment browser_task_environment_;
std::unique_ptr<PrivacySandboxInternalsHandler> handler_;
mojo::Remote<mojom::PageHandler> remote_;
std::unique_ptr<TestingProfile> profile_;
};
TEST_F(PrivacySandboxInternalsHandlerUnitTest,
ReadPrefsWithPrefixes_OnlyReturnsPrefsThatStartPrefixes) {
base::test::TestFuture<ReadPrefsWithPrefixesResultType> future;
remote_->ReadPrefsWithPrefixes({kPrefixA, kPrefixB}, future.GetCallback());
auto& cb_data = future.Get();
EXPECT_THAT(
cb_data,
Each(Pointee(Field(
&privacy_sandbox_internals::mojom::PrivacySandboxInternalsPref::name,
AnyOf(StartsWith(kPrefixA), StartsWith(kPrefixB))))));
EXPECT_THAT(cb_data.size(),
kPrefixAPrefNames.size() + kPrefixBPrefNames.size());
}
TEST_F(PrivacySandboxInternalsHandlerUnitTest,
ReadPrefsWithPrefixes_HandlesOverlappingPrefixes) {
base::test::TestFuture<ReadPrefsWithPrefixesResultType> future;
remote_->ReadPrefsWithPrefixes({kShortPrefixA, kPrefixA},
future.GetCallback());
auto& cb_data = future.Get();
EXPECT_THAT(cb_data.size(), kPrefixAPrefNames.size());
}
TEST_F(PrivacySandboxInternalsHandlerUnitTest,
ReadPrefsWithPrefixes_EmptyStringInPrefixListReportsBadMessage) {
std::string received_error;
mojo::SetDefaultProcessErrorHandler(base::BindLambdaForTesting(
[&](const std::string& error) { received_error = error; }));
remote_->ReadPrefsWithPrefixes({kPrefixA, ""}, base::DoNothing());
remote_.FlushForTesting();
EXPECT_EQ(received_error, "Empty prefixes are invalid.");
}
TEST_F(PrivacySandboxInternalsHandlerUnitTest,
ReadPrefsWithPrefixes_DuplicatedPrefixInPrefixListReportsBadMessage) {
std::string received_error;
mojo::SetDefaultProcessErrorHandler(base::BindLambdaForTesting(
[&](const std::string& error) { received_error = error; }));
remote_->ReadPrefsWithPrefixes({kPrefixA, kPrefixB, kPrefixB},
base::DoNothing());
remote_.FlushForTesting();
EXPECT_EQ(received_error, "Duplicate prefixes are invalid.");
}
TEST_F(PrivacySandboxInternalsHandlerUnitTest,
ReadPrefsWithPrefixes_ResultContainsPrefValues) {
base::test::TestFuture<ReadPrefsWithPrefixesResultType> future;
remote_->ReadPrefsWithPrefixes({kPrefixA, kPrefixB}, future.GetCallback());
auto& cb_data = future.Get();
EXPECT_THAT(
cb_data,
Each(Pointee(AnyOf(
AllOf(Field(&privacy_sandbox_internals::mojom::
PrivacySandboxInternalsPref::name,
StartsWith(kPrefixA)),
Field(&privacy_sandbox_internals::mojom::
PrivacySandboxInternalsPref::value,
Property(&base::Value::GetString, StrEq(kPrefAValue)))),
AllOf(
Field(&privacy_sandbox_internals::mojom::
PrivacySandboxInternalsPref::name,
StartsWith(kPrefixB)),
Field(&privacy_sandbox_internals::mojom::
PrivacySandboxInternalsPref::value,
Property(&base::Value::GetString, StrEq(kPrefBValue))))))));
}
} // namespace
} // namespace privacy_sandbox_internals
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