Add unittests for CastTouchDeviceManager
Ensure the touch device events are scaled correctly.
Bug: b/72054342
Test: Compiled and ran unittests
Change-Id: I40b9d1dac5f49f7c4cf7f38bf047f8a75e908d49
Reviewed-on: https://chromium-review.googlesource.com/932962
Commit-Queue: Daniel Nicoara <[email protected]>
Reviewed-by: Michael Spang <[email protected]>
Reviewed-by: Sergey Volk <[email protected]>
Cr-Commit-Position: refs/heads/master@{#539521}diff --git a/chromecast/browser/cast_touch_device_manager_unittest.cc b/chromecast/browser/cast_touch_device_manager_unittest.cc
new file mode 100644
index 0000000..e435a12
--- /dev/null
+++ b/chromecast/browser/cast_touch_device_manager_unittest.cc
@@ -0,0 +1,128 @@
+// Copyright 2018 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 "chromecast/browser/cast_touch_device_manager.h"
+#include "testing/gtest/include/gtest/gtest.h"
+#include "ui/events/devices/device_data_manager.h"
+#include "ui/events/devices/device_hotplug_event_observer.h"
+#include "ui/gfx/geometry/rect.h"
+
+namespace {
+
+constexpr int64_t kDisplayId = 1;
+constexpr int kTouchDeviceId = 100;
+
+} // namespace
+
+class CastTouchDeviceManagerTest : public testing::Test {
+ public:
+ CastTouchDeviceManagerTest() {}
+
+ void SetUp() override {
+ ui::DeviceDataManager::CreateInstance();
+ touch_device_manager_ =
+ std::make_unique<chromecast::shell::CastTouchDeviceManager>();
+ }
+
+ void TearDown() override {
+ touch_device_manager_.reset();
+ ui::DeviceDataManager::DeleteInstance();
+ }
+
+ ui::DeviceHotplugEventObserver* GetHotplugObserver() {
+ return ui::DeviceDataManager::GetInstance();
+ }
+
+ protected:
+ std::unique_ptr<chromecast::shell::CastTouchDeviceManager>
+ touch_device_manager_;
+};
+
+TEST_F(CastTouchDeviceManagerTest, CheckOneToOneMapping) {
+ std::vector<ui::TouchscreenDevice> touchscreens;
+ const gfx::Size display_size = gfx::Size(1280, 720);
+ touch_device_manager_->OnDisplayConfigured(
+ kDisplayId, display::Display::ROTATE_0, gfx::Rect(display_size));
+ touchscreens.push_back(ui::TouchscreenDevice(kTouchDeviceId,
+ ui::INPUT_DEVICE_INTERNAL,
+ "Touchscreen", display_size, 1));
+ GetHotplugObserver()->OnTouchscreenDevicesUpdated(touchscreens);
+
+ // 1:1 mapping for touch coordinates to display coordinates.
+ {
+ float x = display_size.width(), y = display_size.height();
+ ui::DeviceDataManager::GetInstance()->ApplyTouchTransformer(kTouchDeviceId,
+ &x, &y);
+ EXPECT_EQ(display_size.width(), x);
+ EXPECT_EQ(display_size.height(), y);
+ }
+
+ {
+ float x = display_size.width(), y = 0;
+ ui::DeviceDataManager::GetInstance()->ApplyTouchTransformer(kTouchDeviceId,
+ &x, &y);
+ EXPECT_EQ(display_size.width(), x);
+ EXPECT_EQ(0, y);
+ }
+
+ {
+ float x = 0, y = display_size.height();
+ ui::DeviceDataManager::GetInstance()->ApplyTouchTransformer(kTouchDeviceId,
+ &x, &y);
+ EXPECT_EQ(0, x);
+ EXPECT_EQ(display_size.height(), y);
+ }
+
+ {
+ float x = display_size.width() / 2, y = display_size.height() / 2;
+ ui::DeviceDataManager::GetInstance()->ApplyTouchTransformer(1, &x, &y);
+ EXPECT_EQ(display_size.width() / 2, x);
+ EXPECT_EQ(display_size.height() / 2, y);
+ }
+}
+
+TEST_F(CastTouchDeviceManagerTest, CheckMappingWithLargerTouchscreen) {
+ std::vector<ui::TouchscreenDevice> touchscreens;
+ const gfx::Size display_size = gfx::Size(1280, 720);
+ touch_device_manager_->OnDisplayConfigured(
+ kDisplayId, display::Display::ROTATE_0, gfx::Rect(display_size));
+ touchscreens.push_back(ui::TouchscreenDevice(
+ kTouchDeviceId, ui::INPUT_DEVICE_INTERNAL, "Touchscreen",
+ gfx::ScaleToRoundedSize(display_size, 2, 2), 1));
+ GetHotplugObserver()->OnTouchscreenDevicesUpdated(touchscreens);
+
+ // Touch screen is twice the size, so transformed events will be half the
+ // reported value.
+ {
+ float x = display_size.width(), y = display_size.height();
+ ui::DeviceDataManager::GetInstance()->ApplyTouchTransformer(kTouchDeviceId,
+ &x, &y);
+ EXPECT_EQ(display_size.width() / 2, x);
+ EXPECT_EQ(display_size.height() / 2, y);
+ }
+
+ {
+ float x = display_size.width(), y = 0;
+ ui::DeviceDataManager::GetInstance()->ApplyTouchTransformer(kTouchDeviceId,
+ &x, &y);
+ EXPECT_EQ(display_size.width() / 2, x);
+ EXPECT_EQ(0, y);
+ }
+
+ {
+ float x = 0, y = display_size.height();
+ ui::DeviceDataManager::GetInstance()->ApplyTouchTransformer(kTouchDeviceId,
+ &x, &y);
+ EXPECT_EQ(0, x);
+ EXPECT_EQ(display_size.height() / 2, y);
+ }
+
+ {
+ float x = display_size.width() / 2, y = display_size.height() / 2;
+ ui::DeviceDataManager::GetInstance()->ApplyTouchTransformer(kTouchDeviceId,
+ &x, &y);
+ EXPECT_EQ(display_size.width() / 4, x);
+ EXPECT_EQ(display_size.height() / 4, y);
+ }
+}
