// Copyright 2015 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 "config.h"
#include "core/fetch/Resource.h"

#include "core/fetch/ResourcePtr.h"
#include "platform/network/ResourceRequest.h"
#include "platform/network/ResourceResponse.h"
#include "platform/testing/URLTestHelpers.h"
#include "public/platform/Platform.h"
#include "wtf/Vector.h"
#include <gtest/gtest.h>

namespace blink {

namespace {

class MockPlatform final : public Platform {
public:
    MockPlatform() : m_oldPlatform(Platform::current()) { }
    ~MockPlatform() override { }

    // From blink::Platform:
    void cacheMetadata(const WebURL& url, int64, const char*, size_t) override
    {
        m_cachedURLs.append(url);
    }

    const Vector<WebURL>& cachedURLs() const
    {
        return m_cachedURLs;
    }

    WebThread* currentThread() override
    {
        return m_oldPlatform->currentThread();
    }

    // These blink::Platform methods must be overriden to make a usable object.
    void cryptographicallyRandomValues(unsigned char* buffer, size_t length) override
    {
        ASSERT_NOT_REACHED();
    }

    const unsigned char* getTraceCategoryEnabledFlag(const char* categoryName) override
    {
        static const unsigned char tracingIsDisabled = 0;
        return &tracingIsDisabled;
    }

private:
    Platform* m_oldPlatform; // Not owned.
    Vector<WebURL> m_cachedURLs;
};

class AutoInstallMockPlatform {
public:
    AutoInstallMockPlatform()
    {
        m_oldPlatform = Platform::current();
        Platform::initialize(&m_mockPlatform);
    }
    ~AutoInstallMockPlatform()
    {
        Platform::initialize(m_oldPlatform);
    }
    MockPlatform* platform() { return &m_mockPlatform; }
private:
    MockPlatform m_mockPlatform;
    Platform* m_oldPlatform;
};

PassOwnPtr<ResourceResponse> createTestResourceResponse()
{
    OwnPtr<ResourceResponse> response = adoptPtr(new ResourceResponse);
    response->setURL(URLTestHelpers::toKURL("https://example.com/"));
    response->setHTTPStatusCode(200);
    return response.release();
}

void createTestResourceAndSetCachedMetadata(const ResourceResponse* response)
{
    const char testData[] = "test data";
    ResourcePtr<Resource> resource = new Resource(ResourceRequest(response->url()), Resource::Raw);
    resource->setResponse(*response);
    resource->cacheHandler()->setCachedMetadata(100, testData, sizeof(testData), CachedMetadataHandler::SendToPlatform);
    return;
}

} // anonymous namespace

TEST(ResourceTest, SetCachedMetadata_SendsMetadataToPlatform)
{
    AutoInstallMockPlatform mock;
    OwnPtr<ResourceResponse> response(createTestResourceResponse());
    createTestResourceAndSetCachedMetadata(response.get());
    EXPECT_EQ(1u, mock.platform()->cachedURLs().size());
}

TEST(ResourceTest, SetCachedMetadata_DoesNotSendMetadataToPlatformWhenFetchedViaServiceWorker)
{
    AutoInstallMockPlatform mock;
    OwnPtr<ResourceResponse> response(createTestResourceResponse());
    response->setWasFetchedViaServiceWorker(true);
    createTestResourceAndSetCachedMetadata(response.get());
    EXPECT_EQ(0u, mock.platform()->cachedURLs().size());
}

} // namespace blink