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// Copyright 2016 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "ui/display/display_list.h"
#include <string>
#include <vector>
#include "base/strings/string_number_conversions.h"
#include "base/test/gtest_util.h"
#include "testing/gtest/include/gtest/gtest.h"
#include "ui/display/display.h"
#include "ui/display/display_observer.h"
namespace display {
namespace {
class DisplayObserverImpl : public DisplayObserver {
public:
DisplayObserverImpl() {}
DisplayObserverImpl(const DisplayObserverImpl&) = delete;
DisplayObserverImpl& operator=(const DisplayObserverImpl&) = delete;
~DisplayObserverImpl() override {}
std::string GetAndClearChanges() {
std::string changes;
std::swap(changes, changes_);
return changes;
}
private:
static void AddPartChange(uint32_t changed,
uint32_t part,
const std::string& description,
std::string* changed_string) {
if ((changed & part) != part)
return;
*changed_string += " ";
*changed_string += description;
}
void AddChange(const std::string& change) {
if (!changes_.empty())
changes_ += "\n";
changes_ += change;
}
void OnDisplayAdded(const Display& new_display) override {
AddChange("Added id=" + base::NumberToString(new_display.id()));
}
void OnDisplaysRemoved(const Displays& removed_displays) override {
for (const auto& display : removed_displays) {
AddChange("Removed id=" + base::NumberToString(display.id()));
}
}
void OnDisplayMetricsChanged(const Display& display,
uint32_t changed_metrics) override {
std::string parts;
AddPartChange(changed_metrics, DISPLAY_METRIC_BOUNDS, "bounds", &parts);
AddPartChange(changed_metrics, DISPLAY_METRIC_WORK_AREA, "work_area",
&parts);
AddPartChange(changed_metrics, DISPLAY_METRIC_DEVICE_SCALE_FACTOR,
"scale_factor", &parts);
AddPartChange(changed_metrics, DISPLAY_METRIC_ROTATION, "rotation", &parts);
AddPartChange(changed_metrics, DISPLAY_METRIC_PRIMARY, "primary", &parts);
AddPartChange(changed_metrics, DISPLAY_METRIC_LABEL, "label", &parts);
AddChange("Changed id=" + base::NumberToString(display.id()) + parts);
}
std::string changes_;
};
TEST(DisplayListTest, AddUpdateRemove) {
DisplayList display_list;
DisplayObserverImpl observer;
display_list.AddObserver(&observer);
display_list.AddDisplay(Display(2, gfx::Rect(0, 0, 801, 802)),
DisplayList::Type::PRIMARY);
EXPECT_EQ("Added id=2", observer.GetAndClearChanges());
// Update the bounds.
{
Display updated_display = *(display_list.displays().begin());
updated_display.set_bounds(gfx::Rect(0, 0, 803, 802));
display_list.UpdateDisplay(updated_display, DisplayList::Type::PRIMARY);
EXPECT_EQ("Changed id=2 bounds", observer.GetAndClearChanges());
}
// Update the label.
{
Display updated_display = *(display_list.displays().begin());
updated_display.set_label("new_label");
display_list.UpdateDisplay(updated_display, DisplayList::Type::PRIMARY);
EXPECT_EQ("Changed id=2 label", observer.GetAndClearChanges());
EXPECT_EQ("new_label", display_list.FindDisplayById(2)->label());
}
// Add another.
display_list.AddDisplay(Display(3, gfx::Rect(0, 0, 809, 802)),
DisplayList::Type::NOT_PRIMARY);
EXPECT_EQ("Added id=3", observer.GetAndClearChanges());
ASSERT_EQ(2u, display_list.displays().size());
EXPECT_EQ(2, display_list.displays()[0].id());
EXPECT_EQ(3, display_list.displays()[1].id());
EXPECT_EQ(2, display_list.GetPrimaryDisplayIterator()->id());
// Make the second the primary.
display_list.UpdateDisplay(display_list.displays()[1],
DisplayList::Type::PRIMARY);
EXPECT_EQ("Changed id=3 primary", observer.GetAndClearChanges());
EXPECT_EQ(3, display_list.GetPrimaryDisplayIterator()->id());
// Delete the first.
display_list.RemoveDisplay(2);
ASSERT_EQ(1u, display_list.displays().size());
EXPECT_EQ("Removed id=2", observer.GetAndClearChanges());
EXPECT_EQ(3, display_list.GetPrimaryDisplayIterator()->id());
}
TEST(DisplayListTest, EmptyIsValid) {
DisplayList display_list;
EXPECT_TRUE(display_list.IsValid());
}
TEST(DisplayListTest, FirstDisplayAddedMustBePrimary) {
DisplayList display_list;
EXPECT_DCHECK_DEATH(
display_list.AddDisplay(Display(1), DisplayList::Type::NOT_PRIMARY));
}
TEST(DisplayListTest, DisplaysIdsMustBeUnique) {
DisplayList display_list;
display_list.AddDisplay(Display(1), DisplayList::Type::PRIMARY);
EXPECT_DCHECK_DEATH(
display_list.AddDisplay(Display(1), DisplayList::Type::PRIMARY));
}
TEST(DisplayListTest, GetPrimaryDisplayEmpty) {
DisplayList display_list;
EXPECT_EQ(display_list.displays().end(),
display_list.GetPrimaryDisplayIterator());
}
TEST(DisplayListTest, GetPrimaryDisplayOk) {
DisplayList display_list;
display_list.AddDisplay(Display(1), DisplayList::Type::PRIMARY);
EXPECT_NE(display_list.displays().end(),
display_list.GetPrimaryDisplayIterator());
EXPECT_EQ(1, display_list.GetPrimaryDisplayIterator()->id());
}
} // namespace
} // namespace display
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