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// 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 "core/html/parser/CSSPreloadScanner.h"
#include "core/fetch/FetchContext.h"
#include "core/fetch/Resource.h"
#include "core/fetch/ResourceFetcher.h"
#include "core/frame/Settings.h"
#include "core/html/parser/HTMLResourcePreloader.h"
#include "core/testing/DummyPageHolder.h"
#include "platform/heap/Heap.h"
#include "platform/network/ResourceError.h"
#include "platform/network/ResourceRequest.h"
#include "platform/weborigin/KURL.h"
#include "testing/gtest/include/gtest/gtest.h"
#include <memory>
namespace blink {
namespace {
class MockHTMLResourcePreloader : public HTMLResourcePreloader {
WTF_MAKE_NONCOPYABLE(MockHTMLResourcePreloader);
public:
MockHTMLResourcePreloader(Document& document)
: HTMLResourcePreloader(document) {}
void preload(std::unique_ptr<PreloadRequest> preloadRequest,
const NetworkHintsInterface&) override {}
};
class PreloadRecordingCSSPreloaderResourceClient final
: public CSSPreloaderResourceClient {
public:
PreloadRecordingCSSPreloaderResourceClient(Resource* resource,
HTMLResourcePreloader* preloader)
: CSSPreloaderResourceClient(resource, preloader) {}
void fetchPreloads(PreloadRequestStream& preloads) override {
for (const auto& it : preloads)
m_preloadUrls.push_back(it->resourceURL());
CSSPreloaderResourceClient::fetchPreloads(preloads);
}
Vector<String> m_preloadUrls;
};
class CSSPreloadScannerTest : public ::testing::Test {};
} // namespace
TEST_F(CSSPreloadScannerTest, ScanFromResourceClient) {
std::unique_ptr<DummyPageHolder> dummyPageHolder =
DummyPageHolder::create(IntSize(500, 500));
dummyPageHolder->document().settings()->setCSSExternalScannerNoPreload(true);
MockHTMLResourcePreloader* preloader =
new MockHTMLResourcePreloader(dummyPageHolder->document());
KURL url(ParsedURLString, "http://127.0.0.1/foo.css");
CSSStyleSheetResource* resource =
CSSStyleSheetResource::createForTest(ResourceRequest(url), "utf-8");
resource->setStatus(Resource::Pending);
PreloadRecordingCSSPreloaderResourceClient* resourceClient =
new PreloadRecordingCSSPreloaderResourceClient(resource, preloader);
const char* data = "@import url('http://127.0.0.1/preload.css');";
resource->appendData(data, strlen(data));
EXPECT_EQ(Resource::PreloadNotReferenced, resource->getPreloadResult());
EXPECT_EQ(1u, resourceClient->m_preloadUrls.size());
EXPECT_EQ("http://127.0.0.1/preload.css",
resourceClient->m_preloadUrls.front());
}
// Regression test for crbug.com/608310 where the client is destroyed but was
// not removed from the resource's client list.
TEST_F(CSSPreloadScannerTest, DestroyClientBeforeDataSent) {
std::unique_ptr<DummyPageHolder> dummyPageHolder =
DummyPageHolder::create(IntSize(500, 500));
dummyPageHolder->document().settings()->setCSSExternalScannerNoPreload(true);
Persistent<MockHTMLResourcePreloader> preloader =
new MockHTMLResourcePreloader(dummyPageHolder->document());
KURL url(ParsedURLString, "http://127.0.0.1/foo.css");
Persistent<CSSStyleSheetResource> resource =
CSSStyleSheetResource::createForTest(ResourceRequest(url), "utf-8");
resource->setStatus(Resource::Pending);
new PreloadRecordingCSSPreloaderResourceClient(resource, preloader);
// Destroys the resourceClient.
ThreadState::current()->collectAllGarbage();
const char* data = "@import url('http://127.0.0.1/preload.css');";
// Should not crash.
resource->appendData(data, strlen(data));
}
// Regression test for crbug.com/646869 where the client's data is cleared
// before didAppendFirstData is called.
TEST_F(CSSPreloadScannerTest, DontReadFromClearedData) {
std::unique_ptr<DummyPageHolder> dummyPageHolder =
DummyPageHolder::create(IntSize(500, 500));
dummyPageHolder->document().settings()->setCSSExternalScannerNoPreload(true);
MockHTMLResourcePreloader* preloader =
new MockHTMLResourcePreloader(dummyPageHolder->document());
KURL url(ParsedURLString, "http://127.0.0.1/foo.css");
CSSStyleSheetResource* resource =
CSSStyleSheetResource::createForTest(ResourceRequest(url), "utf-8");
const char* data = "@import url('http://127.0.0.1/preload.css');";
resource->appendData(data, strlen(data));
ResourceError error(errorDomainBlinkInternal, 0, url.getString(), "");
resource->error(error);
// Should not crash.
PreloadRecordingCSSPreloaderResourceClient* resourceClient =
new PreloadRecordingCSSPreloaderResourceClient(resource, preloader);
EXPECT_EQ(0u, resourceClient->m_preloadUrls.size());
}
// Regression test for crbug.com/645331, where a resource client gets callbacks
// after the document is shutdown and we have no frame.
TEST_F(CSSPreloadScannerTest, DoNotExpectValidDocument) {
std::unique_ptr<DummyPageHolder> dummyPageHolder =
DummyPageHolder::create(IntSize(500, 500));
dummyPageHolder->document().settings()->setCSSExternalScannerNoPreload(true);
MockHTMLResourcePreloader* preloader =
new MockHTMLResourcePreloader(dummyPageHolder->document());
KURL url(ParsedURLString, "http://127.0.0.1/foo.css");
CSSStyleSheetResource* resource =
CSSStyleSheetResource::createForTest(ResourceRequest(url), "utf-8");
resource->setStatus(Resource::Pending);
PreloadRecordingCSSPreloaderResourceClient* resourceClient =
new PreloadRecordingCSSPreloaderResourceClient(resource, preloader);
dummyPageHolder->document().shutdown();
const char* data = "@import url('http://127.0.0.1/preload.css');";
resource->appendData(data, strlen(data));
// Do not expect to gather any preloads, as the document loader is invalid,
// which means we can't notify WebLoadingBehaviorData of the preloads.
EXPECT_EQ(0u, resourceClient->m_preloadUrls.size());
}
} // namespace blink
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