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// Copyright 2023 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/views/dark_mode_manager_linux.h"
#include "dbus/mock_bus.h"
#include "dbus/mock_object_proxy.h"
#include "testing/gmock/include/gmock/gmock.h"
#include "testing/gtest/include/gtest/gtest.h"
#include "ui/linux/fake_linux_ui.h"
#include "ui/native_theme/native_theme.h"
namespace ui {
namespace {
class MockLinuxUi : public FakeLinuxUi {
public:
MOCK_METHOD(ui::NativeTheme*, GetNativeTheme, (), (const override));
MOCK_METHOD(void, SetDarkTheme, (bool dark), (override));
};
class MockNativeTheme : public NativeTheme {
public:
MockNativeTheme() : NativeTheme(false) {}
~MockNativeTheme() override = default;
void SetUseDarkColors(bool use_dark_colors) {
set_use_dark_colors(use_dark_colors);
set_preferred_color_scheme(use_dark_colors
? NativeTheme::PreferredColorScheme::kDark
: NativeTheme::PreferredColorScheme::kLight);
NotifyOnNativeThemeUpdated();
}
// Mock some pure-virtual methods even though they're not used.
MOCK_METHOD(gfx::Size,
GetPartSize,
(Part part, State state, const ExtraParams& extra),
(const override));
MOCK_METHOD(void,
Paint,
(cc::PaintCanvas * canvas,
const ui::ColorProvider* color_provider,
Part part,
State state,
const gfx::Rect& rect,
const ExtraParams& extra,
ColorScheme color_scheme,
const absl::optional<SkColor>& accent_color),
(const override));
MOCK_METHOD(bool, SupportsNinePatch, (Part part), (const override));
MOCK_METHOD(gfx::Size, GetNinePatchCanvasSize, (Part part), (const override));
MOCK_METHOD(gfx::Rect, GetNinePatchAperture, (Part part), (const override));
};
ACTION_P2(RegisterSignalCallback, signal_callback, connected_callback) {
*signal_callback = arg2;
*connected_callback = std::move(*arg3);
}
ACTION_P(MethodCallback, response_callback, error_callback) {
*response_callback = std::move(*arg2);
*error_callback = std::move(*arg3);
}
// Matches a method call to the specified dbus target.
MATCHER_P2(Calls, interface, member, "") {
return arg->GetInterface() == interface && arg->GetMember() == member;
}
} // namespace
using testing::_;
using testing::ByMove;
using testing::Return;
using testing::StrictMock;
class DarkModeManagerLinuxTest : public testing::Test {
public:
~DarkModeManagerLinuxTest() override = default;
protected:
bool ManagerPrefersDarkTheme() const { return manager_->prefer_dark_theme(); }
dbus::ObjectProxy::SignalCallback& setting_changed_callback() {
return setting_changed_callback_;
}
dbus::ObjectProxy::OnConnectedCallback& signal_connected_callback() {
return signal_connected_callback_;
}
dbus::MockObjectProxy::ResponseCallback& response_callback() {
return response_callback_;
}
dbus::MockObjectProxy::ErrorCallback& error_callback() {
return error_callback_;
}
MockNativeTheme* mock_native_theme() { return mock_native_theme_.get(); }
MockLinuxUi* mock_linux_ui() { return mock_linux_ui_.get(); }
private:
void SetUp() override {
mock_bus_ = base::MakeRefCounted<dbus::MockBus>(dbus::Bus::Options());
mock_portal_proxy_ =
base::MakeRefCounted<StrictMock<dbus::MockObjectProxy>>(
mock_bus_.get(), DarkModeManagerLinux::kFreedesktopSettingsService,
dbus::ObjectPath(
DarkModeManagerLinux::kFreedesktopSettingsObjectPath));
EXPECT_CALL(*mock_bus_,
GetObjectProxy(
DarkModeManagerLinux::kFreedesktopSettingsService,
dbus::ObjectPath(
DarkModeManagerLinux::kFreedesktopSettingsObjectPath)))
.WillOnce(Return(mock_portal_proxy_.get()));
EXPECT_CALL(
*mock_portal_proxy_,
DoConnectToSignal(DarkModeManagerLinux::kFreedesktopSettingsInterface,
DarkModeManagerLinux::kSettingChangedSignal, _, _))
.WillOnce(RegisterSignalCallback(&setting_changed_callback_,
&signal_connected_callback_));
EXPECT_CALL(*mock_portal_proxy_,
DoCallMethodWithErrorCallback(
Calls(DarkModeManagerLinux::kFreedesktopSettingsInterface,
DarkModeManagerLinux::kReadMethod),
_, _, _))
.WillOnce(MethodCallback(&response_callback_, &error_callback_));
mock_linux_ui_ = std::make_unique<MockLinuxUi>();
linux_ui_themes_ = std::vector<LinuxUiTheme*>{mock_linux_ui_.get()};
mock_native_theme_ = std::make_unique<MockNativeTheme>();
EXPECT_CALL(*mock_linux_ui_, GetNativeTheme())
.WillOnce(Return(mock_native_theme_.get()));
manager_ = std::make_unique<DarkModeManagerLinux>(
mock_bus_, mock_linux_ui_.get(), &linux_ui_themes_,
std::vector<NativeTheme*>{mock_native_theme_.get()});
EXPECT_FALSE(manager_->prefer_dark_theme());
EXPECT_FALSE(mock_native_theme_->ShouldUseDarkColors());
EXPECT_EQ(mock_native_theme_->GetPreferredColorScheme(),
NativeTheme::PreferredColorScheme::kLight);
}
void TearDown() override {
EXPECT_CALL(*mock_bus_, GetDBusTaskRunner()).WillOnce(Return(nullptr));
manager_.reset();
}
std::unique_ptr<MockLinuxUi> mock_linux_ui_;
std::vector<LinuxUiTheme*> linux_ui_themes_;
std::unique_ptr<MockNativeTheme> mock_native_theme_;
scoped_refptr<dbus::MockBus> mock_bus_;
scoped_refptr<dbus::MockObjectProxy> mock_portal_proxy_;
dbus::ObjectProxy::SignalCallback setting_changed_callback_;
dbus::ObjectProxy::OnConnectedCallback signal_connected_callback_;
dbus::MockObjectProxy::ResponseCallback response_callback_;
dbus::MockObjectProxy::ErrorCallback error_callback_;
std::unique_ptr<DarkModeManagerLinux> manager_;
};
TEST_F(DarkModeManagerLinuxTest, UseNativeThemeSetting) {
// Set the native theme preference before the async DBus calls complete.
mock_native_theme()->SetUseDarkColors(true);
EXPECT_TRUE(ManagerPrefersDarkTheme());
mock_native_theme()->SetUseDarkColors(false);
EXPECT_FALSE(ManagerPrefersDarkTheme());
// Let the manager know the DBus method call and signal connection failed.
dbus::MethodCall method_call(
DarkModeManagerLinux::kFreedesktopSettingsInterface,
DarkModeManagerLinux::kReadMethod);
method_call.SetSerial(123);
auto error = dbus::ErrorResponse::FromMethodCall(
&method_call, "org.freedesktop.DBus.Error.Failed", "");
std::move(error_callback()).Run(error.get());
std::move(signal_connected_callback())
.Run(DarkModeManagerLinux::kFreedesktopSettingsInterface,
DarkModeManagerLinux::kSettingChangedSignal, false);
// The native theme preference should still toggle the manager preference.
mock_native_theme()->SetUseDarkColors(true);
EXPECT_TRUE(ManagerPrefersDarkTheme());
mock_native_theme()->SetUseDarkColors(false);
EXPECT_FALSE(ManagerPrefersDarkTheme());
}
TEST_F(DarkModeManagerLinuxTest, UsePortalSetting) {
// Let the manager know the DBus method call and signal connection succeeded.
dbus::MethodCall method_call(
DarkModeManagerLinux::kFreedesktopSettingsInterface,
DarkModeManagerLinux::kReadMethod);
method_call.SetSerial(123);
auto response = dbus::Response::FromMethodCall(&method_call);
dbus::MessageWriter writer(response.get());
dbus::MessageWriter variant_writer(nullptr);
writer.OpenVariant("v", &variant_writer);
variant_writer.AppendVariantOfUint32(
DarkModeManagerLinux::kFreedesktopColorSchemeDark);
writer.CloseContainer(&variant_writer);
EXPECT_CALL(*mock_linux_ui(), SetDarkTheme(true));
std::move(response_callback()).Run(response.get());
EXPECT_TRUE(ManagerPrefersDarkTheme());
EXPECT_TRUE(mock_native_theme()->ShouldUseDarkColors());
EXPECT_EQ(mock_native_theme()->GetPreferredColorScheme(),
NativeTheme::PreferredColorScheme::kDark);
// Changes in the portal preference should be processed by the manager and the
// native theme should be updated.
dbus::Signal signal(DarkModeManagerLinux::kFreedesktopSettingsInterface,
DarkModeManagerLinux::kSettingChangedSignal);
dbus::MessageWriter signal_writer(&signal);
signal_writer.AppendString(DarkModeManagerLinux::kSettingsNamespace);
signal_writer.AppendString(DarkModeManagerLinux::kColorSchemeKey);
signal_writer.AppendVariantOfUint32(0);
EXPECT_CALL(*mock_linux_ui(), SetDarkTheme(false));
std::move(setting_changed_callback()).Run(&signal);
EXPECT_FALSE(ManagerPrefersDarkTheme());
EXPECT_FALSE(mock_native_theme()->ShouldUseDarkColors());
EXPECT_EQ(mock_native_theme()->GetPreferredColorScheme(),
NativeTheme::PreferredColorScheme::kLight);
// The native theme preference should have no effect when the portal
// preference is being used.
mock_native_theme()->SetUseDarkColors(true);
EXPECT_FALSE(ManagerPrefersDarkTheme());
mock_native_theme()->SetUseDarkColors(false);
EXPECT_FALSE(ManagerPrefersDarkTheme());
}
} // namespace ui
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