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// Copyright 2017 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/views/view_tracker.h"
#include <memory>
#include "base/functional/bind.h"
#include "base/test/mock_callback.h"
#include "ui/views/test/views_test_base.h"
#include "ui/views/view.h"
namespace views {
using ViewTrackerTest = ViewsTestBase;
TEST_F(ViewTrackerTest, RemovedOnDelete) {
ViewTracker tracker;
{
View view;
tracker.SetView(&view);
EXPECT_EQ(&view, tracker.view());
}
EXPECT_EQ(nullptr, tracker.view());
}
TEST_F(ViewTrackerTest, ObservedAtConstruction) {
std::unique_ptr<ViewTracker> tracker;
{
View view;
tracker = std::make_unique<ViewTracker>(&view);
EXPECT_EQ(&view, tracker->view());
}
EXPECT_EQ(nullptr, tracker->view());
}
TEST_F(ViewTrackerTest, RunCallbackOnViewDeletion) {
base::MockCallback<base::OnceClosure> is_deleting_callback;
EXPECT_CALL(is_deleting_callback, Run);
ViewTracker tracker;
{
std::unique_ptr<View> tracked_view = std::make_unique<View>();
tracker.SetView(tracked_view.get());
EXPECT_EQ(tracked_view.get(), tracker.view());
tracker.SetIsDeletingCallback(is_deleting_callback.Get());
}
}
TEST_F(ViewTrackerTest, TestTrackEntireViewHierarchy) {
auto hierarchy_deleting_callback = [](View* view) {
// Expected to be called before children are destroyed.
EXPECT_EQ(view->children().size(), 1u);
};
ViewTracker tracker;
{
tracker.SetTrackEntireViewHierarchy(true);
std::unique_ptr<View> tracked_view = std::make_unique<View>();
tracked_view->AddChildView(std::make_unique<View>());
tracker.SetView(tracked_view.get());
tracker.SetIsDeletingCallback(base::BindOnce(
hierarchy_deleting_callback, base::Unretained(tracked_view.get())));
}
auto view_deleting_callback = [](View* view) {
// Expected to be called after children are destroyed.
EXPECT_EQ(view->children().size(), 0u);
};
{
tracker.SetTrackEntireViewHierarchy(false);
std::unique_ptr<View> tracked_view = std::make_unique<View>();
tracked_view->AddChildView(std::make_unique<View>());
tracker.SetView(tracked_view.get());
tracker.SetIsDeletingCallback(base::BindOnce(
view_deleting_callback, base::Unretained(tracked_view.get())));
}
}
} // namespace views
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