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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 "ash/drag_drop/scoped_drag_drop_observer.h"
#include "ash/drag_drop/drag_drop_controller.h"
#include "ash/drag_drop/draggable_test_view.h"
#include "ash/public/cpp/holding_space/holding_space_item.h"
#include "ash/public/cpp/test/shell_test_api.h"
#include "ash/test/ash_test_base.h"
#include "base/test/mock_callback.h"
#include "testing/gmock/include/gmock/gmock.h"
#include "testing/gtest/include/gtest/gtest.h"
#include "ui/aura/client/drag_drop_client.h"
#include "ui/aura/window.h"
#include "ui/views/widget/widget.h"
namespace ash {
// Aliases.
using EventCallback = ScopedDragDropObserver::EventCallback;
using EventType = ScopedDragDropObserver::EventType;
using testing::AtLeast;
using testing::Conditional;
using testing::Eq;
using testing::IsNull;
using testing::NotNull;
// ScopedDragDropObserverTest --------------------------------------------------
// Base class for tests of `ScopedDragDropObserver` parameterized by whether to
// test (a) `EventType::kDragCompleted` or (b) `EventType::kDragCancelled`.
class ScopedDragDropObserverTest
: public AshTestBase,
public testing::WithParamInterface</*test_scenario=*/EventType> {
public:
ScopedDragDropObserverTest() {
// Sanity check parameterization.
EXPECT_TRUE(GetTestScenario() == EventType::kDragCompleted ||
GetTestScenario() == EventType::kDragCancelled);
}
// Returns (a) `EventType::kDragCompleted` or (b) `EventType::kDragCancelled`
// depending on test parameterization.
EventType GetTestScenario() const { return GetParam(); }
// Returns a `ScopedDragDropObserver` with the specified `event_callback`.
std::unique_ptr<ScopedDragDropObserver> CreateScopedDragDropObserver(
EventCallback event_callback) {
return std::make_unique<ScopedDragDropObserver>(
aura::client::GetDragDropClient(
widget_->GetNativeWindow()->GetRootWindow()),
std::move(event_callback));
}
// Moves the mouse to the center of the specified `widget`.
void MoveMouseTo(views::Widget* widget) {
GetEventGenerator()->MoveMouseTo(
widget->GetWindowBoundsInScreen().CenterPoint());
}
// Moves the mouse by the specified `x` and `y` offsets.
void MoveMouseBy(int x, int y) {
auto* event_generator = GetEventGenerator();
event_generator->MoveMouseTo(
event_generator->current_screen_location() + gfx::Vector2d(x, y),
/*count=*/10);
}
// Presses/releases the left button.
void PressLeftButton() { GetEventGenerator()->PressLeftButton(); }
void ReleaseLeftButton() { GetEventGenerator()->ReleaseLeftButton(); }
// Returns the `widget_` with draggable contents.
views::Widget* widget() { return widget_.get(); }
private:
// AshTestBase:
void SetUp() override {
AshTestBase::SetUp();
// Prevent blocking during drag-and-drop sequences.
ShellTestApi().drag_drop_controller()->SetDisableNestedLoopForTesting(true);
// Create and show a `widget_` with draggable contents.
widget_ = CreateFramelessTestWidget();
widget_->SetContentsView(std::make_unique<DraggableTestView>());
widget_->CenterWindow(gfx::Size(100, 100));
widget_->Show();
}
// Widget with draggable contents.
std::unique_ptr<views::Widget> widget_;
};
INSTANTIATE_TEST_SUITE_P(All,
ScopedDragDropObserverTest,
/*test_scenario=*/
testing::Values(EventType::kDragCompleted,
EventType::kDragCancelled));
// Tests -----------------------------------------------------------------------
// Verifies that `EventCallback`s are run as expected.
TEST_P(ScopedDragDropObserverTest, EventCallback) {
base::MockCallback<EventCallback> event_callback;
// Create observer.
auto scoped_drag_drop_observer =
CreateScopedDragDropObserver(event_callback.Get());
{
testing::InSequence sequence;
// Expect one or more drag update events...
EXPECT_CALL(event_callback,
Run(Eq(EventType::kDragUpdated), /*event=*/NotNull()))
.Times(AtLeast(1));
// ...followed by a single drag completed or cancelled event.
EXPECT_CALL(event_callback,
Run(Eq(GetTestScenario()),
Conditional(GetTestScenario() == EventType::kDragCompleted,
/*event=*/NotNull(), /*event=*/IsNull())));
}
// Drag contents from `widget()`...
MoveMouseTo(widget());
PressLeftButton();
MoveMouseBy(/*x=*/100, /*y=*/100);
// ...then cancel drag...
if (GetTestScenario() == EventType::kDragCancelled) {
PressAndReleaseKey(ui::VKEY_ESCAPE);
}
// ...or complete drag.
ReleaseLeftButton();
}
} // namespace ash
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