third_party/WebKit/Source/core/events/EventTargetTest.cpp

// Copyright 2016 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 "bindings/core/v8/ScriptController.h"
#include "core/layout/LayoutTestHelper.h"
#include "platform/testing/HistogramTester.h"

namespace blink {

enum PassiveForcedListenerResultType {
    PreventDefaultNotCalled,
    DocumentLevelTouchPreventDefaultCalled
};

class EventTargetTest : public RenderingTest {
public:
    EventTargetTest() {}
    ~EventTargetTest() {}
};

TEST_F(EventTargetTest, PreventDefaultNotCalled)
{
    document().settings()->setScriptEnabled(true);
    HistogramTester histogramTester;
    document().frame()->script().executeScriptInMainWorld(
        "window.addEventListener('touchstart', function(e) {}, {});"
        "window.dispatchEvent(new TouchEvent('touchstart', {cancelable: false}));");

    histogramTester.expectTotalCount(
        "Event.PassiveForcedEventDispatchCancelled", 1);
    histogramTester.expectUniqueSample(
        "Event.PassiveForcedEventDispatchCancelled", PreventDefaultNotCalled, 1);
}

TEST_F(EventTargetTest, PreventDefaultCalled)
{
    document().settings()->setScriptEnabled(true);
    HistogramTester histogramTester;
    document().frame()->script().executeScriptInMainWorld(
        "window.addEventListener('touchstart', function(e) {e.preventDefault();}, {});"
        "window.dispatchEvent(new TouchEvent('touchstart', {cancelable: false}));");

    histogramTester.expectTotalCount(
        "Event.PassiveForcedEventDispatchCancelled", 1);
    histogramTester.expectUniqueSample(
        "Event.PassiveForcedEventDispatchCancelled", DocumentLevelTouchPreventDefaultCalled, 1);
}

} // namespace blink