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/*
* Copyright (C) 2012 Google Inc. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are
* met:
*
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * Redistributions in binary form must reproduce the above
* copyright notice, this list of conditions and the following disclaimer
* in the documentation and/or other materials provided with the
* distribution.
* * Neither the name of Google Inc. nor the names of its
* contributors may be used to endorse or promote products derived from
* this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#include "config.h"
#include "FrameTestHelpers.h"
#include "URLTestHelpers.h"
#include "WebView.h"
#include <gtest/gtest.h>
#include "public/platform/Platform.h"
#include "public/platform/WebUnitTestSupport.h"
#include <v8/include/v8-profiler.h>
#include <v8/include/v8.h>
using namespace WebKit;
namespace {
const v8::HeapGraphNode* GetProperty(const v8::HeapGraphNode* node, v8::HeapGraphEdge::Type type, const char* name)
{
for (int i = 0, count = node->GetChildrenCount(); i < count; ++i) {
const v8::HeapGraphEdge* prop = node->GetChild(i);
if (prop->GetType() == type) {
v8::String::AsciiValue propName(prop->GetName());
if (!strcmp(name, *propName))
return prop->GetToNode();
}
}
return 0;
}
int GetNumObjects(const char* constructor)
{
v8::Isolate* isolate = v8::Isolate::GetCurrent();
v8::HandleScope scope(isolate);
v8::HeapProfiler* profiler = isolate->GetHeapProfiler();
const v8::HeapSnapshot* snapshot = profiler->TakeHeapSnapshot(v8::String::New(""));
if (!snapshot)
return -1;
int count = 0;
for (int i = 0; i < snapshot->GetNodesCount(); ++i) {
const v8::HeapGraphNode* node = snapshot->GetNode(i);
if (node->GetType() != v8::HeapGraphNode::kObject)
continue;
v8::String::AsciiValue nodeName(node->GetName());
if (!strcmp(constructor, *nodeName)) {
const v8::HeapGraphNode* constructorProp = GetProperty(node, v8::HeapGraphEdge::kProperty, "constructor");
// Skip an Object instance named after the constructor.
if (constructorProp) {
v8::String::AsciiValue constructorName(constructorProp->GetName());
if (!strcmp(constructor, *constructorName))
continue;
}
++count;
}
}
return count;
}
class ListenerLeakTest : public testing::Test {
public:
ListenerLeakTest() : m_webView(0) { }
void RunTest(const std::string& filename)
{
std::string baseURL("http://www.example.com/");
std::string fileName(filename);
bool executeScript = true;
URLTestHelpers::registerMockedURLFromBaseURL(WebString::fromUTF8(baseURL.c_str()), WebString::fromUTF8(fileName.c_str()));
m_webView = FrameTestHelpers::createWebViewAndLoad(baseURL + fileName, executeScript);
}
virtual void TearDown() OVERRIDE
{
if (m_webView)
m_webView->close();
Platform::current()->unitTestSupport()->unregisterAllMockedURLs();
}
protected:
WebView* m_webView;
};
// This test tries to create a reference cycle between node and its listener.
// See http://crbug/17400.
TEST_F(ListenerLeakTest, ReferenceCycle)
{
RunTest("listener/listener_leak1.html");
ASSERT_EQ(0, GetNumObjects("EventListenerLeakTestObject1"));
}
// This test sets node onclick many times to expose a possible memory
// leak where all listeners get referenced by the node.
TEST_F(ListenerLeakTest, HiddenReferences)
{
RunTest("listener/listener_leak2.html");
ASSERT_EQ(1, GetNumObjects("EventListenerLeakTestObject2"));
}
} // namespace
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