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// Copyright 2014 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include <X11/extensions/Xrandr.h>
#undef Bool
#undef None
#include "chromeos/display/native_display_delegate_x11.h"
#include "chromeos/display/native_display_event_dispatcher_x11.h"
#include "testing/gtest/include/gtest/gtest.h"
namespace chromeos {
namespace {
OutputConfigurator::OutputSnapshot CreateOutput(
RROutput output, RRCrtc crtc, RRMode mode) {
OutputConfigurator::OutputSnapshot snapshot;
snapshot.output = output;
snapshot.crtc = crtc;
snapshot.current_mode = mode;
return snapshot;
}
class TestHelperDelegate : public NativeDisplayDelegateX11::HelperDelegate {
public:
TestHelperDelegate();
virtual ~TestHelperDelegate();
int num_calls_update_xrandr_config() const {
return num_calls_update_xrandr_config_;
}
int num_calls_notify_observers() const {
return num_calls_notify_observers_;
}
void set_cached_outputs(
const std::vector<OutputConfigurator::OutputSnapshot>& outputs) {
cached_outputs_ = outputs;
}
// NativeDisplayDelegateX11::HelperDelegate overrides:
virtual void UpdateXRandRConfiguration(
const base::NativeEvent& event) OVERRIDE;
virtual const std::vector<OutputConfigurator::OutputSnapshot>&
GetCachedOutputs() const OVERRIDE;
virtual void NotifyDisplayObservers() OVERRIDE;
private:
int num_calls_update_xrandr_config_;
int num_calls_notify_observers_;
std::vector<OutputConfigurator::OutputSnapshot> cached_outputs_;
DISALLOW_COPY_AND_ASSIGN(TestHelperDelegate);
};
TestHelperDelegate::TestHelperDelegate()
: num_calls_update_xrandr_config_(0),
num_calls_notify_observers_(0) {}
TestHelperDelegate::~TestHelperDelegate() {}
void TestHelperDelegate::UpdateXRandRConfiguration(
const base::NativeEvent& event) {
++num_calls_update_xrandr_config_;
}
const std::vector<OutputConfigurator::OutputSnapshot>&
TestHelperDelegate::GetCachedOutputs() const {
return cached_outputs_;
}
void TestHelperDelegate::NotifyDisplayObservers() {
++num_calls_notify_observers_;
}
////////////////////////////////////////////////////////////////////////////////
// NativeDisplayEventDispatcherX11Test
class NativeDisplayEventDispatcherX11Test : public testing::Test {
public:
NativeDisplayEventDispatcherX11Test();
virtual ~NativeDisplayEventDispatcherX11Test();
protected:
void DispatchScreenChangeEvent();
void DispatchOutputChangeEvent(
RROutput output, RRCrtc crtc, RRMode mode, bool connected);
int xrandr_event_base_;
scoped_ptr<TestHelperDelegate> helper_delegate_;
scoped_ptr<NativeDisplayEventDispatcherX11> dispatcher_;
private:
DISALLOW_COPY_AND_ASSIGN(NativeDisplayEventDispatcherX11Test);
};
NativeDisplayEventDispatcherX11Test::NativeDisplayEventDispatcherX11Test()
: xrandr_event_base_(10),
helper_delegate_(new TestHelperDelegate()),
dispatcher_(new NativeDisplayEventDispatcherX11(helper_delegate_.get(),
xrandr_event_base_)) {
}
NativeDisplayEventDispatcherX11Test::~NativeDisplayEventDispatcherX11Test() {}
void NativeDisplayEventDispatcherX11Test::DispatchScreenChangeEvent() {
XRRScreenChangeNotifyEvent event = {0};
event.type = xrandr_event_base_ + RRScreenChangeNotify;
dispatcher_->Dispatch(reinterpret_cast<const base::NativeEvent>(&event));
}
void NativeDisplayEventDispatcherX11Test::DispatchOutputChangeEvent(
RROutput output, RRCrtc crtc, RRMode mode, bool connected) {
XRROutputChangeNotifyEvent event = {0};
event.type = xrandr_event_base_ + RRNotify;
event.subtype = RRNotify_OutputChange;
event.output = output;
event.crtc = crtc;
event.mode = mode;
event.connection = connected ? RR_Connected : RR_Disconnected;
dispatcher_->Dispatch(reinterpret_cast<const base::NativeEvent>(&event));
}
} // namespace
TEST_F(NativeDisplayEventDispatcherX11Test, OnScreenChangedEvent) {
DispatchScreenChangeEvent();
EXPECT_EQ(1, helper_delegate_->num_calls_update_xrandr_config());
EXPECT_EQ(0, helper_delegate_->num_calls_notify_observers());
}
TEST_F(NativeDisplayEventDispatcherX11Test, CheckNotificationOnFirstEvent) {
DispatchOutputChangeEvent(1, 10, 20, true);
EXPECT_EQ(0, helper_delegate_->num_calls_update_xrandr_config());
EXPECT_EQ(1, helper_delegate_->num_calls_notify_observers());
}
TEST_F(NativeDisplayEventDispatcherX11Test, CheckNotificationAfterSecondEvent) {
DispatchOutputChangeEvent(1, 10, 20, true);
// Simulate addition of the first output to the cached output list.
std::vector<OutputConfigurator::OutputSnapshot> outputs;
outputs.push_back(CreateOutput(1, 10, 20));
helper_delegate_->set_cached_outputs(outputs);
DispatchOutputChangeEvent(2, 11, 20, true);
EXPECT_EQ(2, helper_delegate_->num_calls_notify_observers());
}
TEST_F(NativeDisplayEventDispatcherX11Test, AvoidNotificationOnDuplicateEvent) {
std::vector<OutputConfigurator::OutputSnapshot> outputs;
outputs.push_back(CreateOutput(1, 10, 20));
helper_delegate_->set_cached_outputs(outputs);
DispatchOutputChangeEvent(1, 10, 20, true);
EXPECT_EQ(0, helper_delegate_->num_calls_notify_observers());
}
TEST_F(NativeDisplayEventDispatcherX11Test, CheckNotificationOnDisconnect) {
std::vector<OutputConfigurator::OutputSnapshot> outputs;
outputs.push_back(CreateOutput(1, 10, 20));
helper_delegate_->set_cached_outputs(outputs);
DispatchOutputChangeEvent(1, 10, 20, false);
EXPECT_EQ(1, helper_delegate_->num_calls_notify_observers());
}
TEST_F(NativeDisplayEventDispatcherX11Test, CheckNotificationOnModeChange) {
std::vector<OutputConfigurator::OutputSnapshot> outputs;
outputs.push_back(CreateOutput(1, 10, 20));
helper_delegate_->set_cached_outputs(outputs);
DispatchOutputChangeEvent(1, 10, 21, true);
EXPECT_EQ(1, helper_delegate_->num_calls_notify_observers());
}
TEST_F(NativeDisplayEventDispatcherX11Test, CheckNotificationOnSecondOutput) {
std::vector<OutputConfigurator::OutputSnapshot> outputs;
outputs.push_back(CreateOutput(1, 10, 20));
helper_delegate_->set_cached_outputs(outputs);
DispatchOutputChangeEvent(2, 11, 20, true);
EXPECT_EQ(1, helper_delegate_->num_calls_notify_observers());
}
TEST_F(NativeDisplayEventDispatcherX11Test, CheckNotificationOnDifferentCrtc) {
std::vector<OutputConfigurator::OutputSnapshot> outputs;
outputs.push_back(CreateOutput(1, 10, 20));
helper_delegate_->set_cached_outputs(outputs);
DispatchOutputChangeEvent(1, 11, 20, true);
EXPECT_EQ(1, helper_delegate_->num_calls_notify_observers());
}
TEST_F(NativeDisplayEventDispatcherX11Test,
CheckNotificationOnSecondOutputDisconnect) {
std::vector<OutputConfigurator::OutputSnapshot> outputs;
outputs.push_back(CreateOutput(1, 10, 20));
outputs.push_back(CreateOutput(2, 11, 20));
helper_delegate_->set_cached_outputs(outputs);
DispatchOutputChangeEvent(2, 11, 20, false);
EXPECT_EQ(1, helper_delegate_->num_calls_notify_observers());
}
TEST_F(NativeDisplayEventDispatcherX11Test,
AvoidDuplicateNotificationOnSecondOutputDisconnect) {
std::vector<OutputConfigurator::OutputSnapshot> outputs;
outputs.push_back(CreateOutput(1, 10, 20));
outputs.push_back(CreateOutput(2, 11, 20));
helper_delegate_->set_cached_outputs(outputs);
DispatchOutputChangeEvent(2, 11, 20, false);
EXPECT_EQ(1, helper_delegate_->num_calls_notify_observers());
// Simulate removal of second output from cached output list.
outputs.erase(outputs.begin() + 1);
helper_delegate_->set_cached_outputs(outputs);
DispatchOutputChangeEvent(2, 11, 20, false);
EXPECT_EQ(1, helper_delegate_->num_calls_notify_observers());
}
} // namespace chromeos
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