third_party/WebKit/Source/core/html/parser/HTMLPreloadScannerTest.cpp

   1 // Copyright 2015 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 #include "config.h"
   6 #include "core/html/parser/HTMLPreloadScanner.h"
   7
   8 #include "core/MediaTypeNames.h"
   9 #include "core/css/MediaValuesCached.h"
  10 #include "core/fetch/ClientHintsPreferences.h"
  11 #include "core/frame/Settings.h"
  12 #include "core/html/CrossOriginAttribute.h"
  13 #include "core/html/parser/HTMLParserOptions.h"
  14 #include "core/html/parser/HTMLResourcePreloader.h"
  15 #include "core/testing/DummyPageHolder.h"
  16 #include <gtest/gtest.h>
  17
  18 namespace blink {
  19
  20 struct TestCase {
  21     const char* baseURL;
  22     const char* inputHTML;
  23     const char* preloadedURL; // Or nullptr if no preload is expected.
  24     const char* outputBaseURL;
  25     Resource::Type type;
  26     int resourceWidth;
  27     ClientHintsPreferences preferences;
  28 };
  29
  30 struct PreconnectTestCase {
  31     const char* baseURL;
  32     const char* inputHTML;
  33     const char* preconnectedHost;
  34     CrossOriginAttributeValue crossOrigin;
  35 };
  36
  37 struct ReferrerPolicyTestCase {
  38     const char* baseURL;
  39     const char* inputHTML;
  40     const char* preloadedURL; // Or nullptr if no preload is expected.
  41     const char* outputBaseURL;
  42     Resource::Type type;
  43     int resourceWidth;
  44     ReferrerPolicy referrerPolicy;
  45 };
  46
  47 class MockHTMLResourcePreloader : public ResourcePreloader {
  48 public:
  49     void preloadRequestVerification(Resource::Type type, const char* url, const char* baseURL, int width, const ClientHintsPreferences& preferences)
  50     {
  51         if (!url) {
  52             EXPECT_FALSE(m_preloadRequest);
  53             return;
  54         }
  55         EXPECT_FALSE(m_preloadRequest->isPreconnect());
  56         EXPECT_EQ(type, m_preloadRequest->resourceType());
  57         EXPECT_STREQ(url, m_preloadRequest->resourceURL().ascii().data());
  58         EXPECT_STREQ(baseURL, m_preloadRequest->baseURL().string().ascii().data());
  59         EXPECT_EQ(width, m_preloadRequest->resourceWidth());
  60         EXPECT_EQ(preferences.shouldSendDPR(), m_preloadRequest->preferences().shouldSendDPR());
  61         EXPECT_EQ(preferences.shouldSendResourceWidth(), m_preloadRequest->preferences().shouldSendResourceWidth());
  62         EXPECT_EQ(preferences.shouldSendViewportWidth(), m_preloadRequest->preferences().shouldSendViewportWidth());
  63     }
  64
  65     void preloadRequestVerification(Resource::Type type, const char* url, const char* baseURL, int width, ReferrerPolicy referrerPolicy)
  66     {
  67         preloadRequestVerification(type, url, baseURL, width, ClientHintsPreferences());
  68         EXPECT_EQ(referrerPolicy, m_preloadRequest->referrerPolicy());
  69     }
  70
  71     void preconnectRequestVerification(const String& host, CrossOriginAttributeValue crossOrigin)
  72     {
  73         if (!host.isNull()) {
  74             EXPECT_TRUE(m_preloadRequest->isPreconnect());
  75             EXPECT_STREQ(m_preloadRequest->resourceURL().ascii().data(), host.ascii().data());
  76             EXPECT_EQ(m_preloadRequest->isCORS(), crossOrigin != CrossOriginAttributeNotSet);
  77             EXPECT_EQ(m_preloadRequest->isAllowCredentials(), crossOrigin == CrossOriginAttributeUseCredentials);
  78         }
  79     }
  80
  81 protected:
  82     void preload(PassOwnPtr<PreloadRequest> preloadRequest, const NetworkHintsInterface&) override
  83     {
  84         m_preloadRequest = preloadRequest;
  85     }
  86
  87 private:
  88     OwnPtr<PreloadRequest> m_preloadRequest;
  89 };
  90
  91 class HTMLPreloadScannerTest : public testing::Test {
  92 protected:
  93     enum ViewportState {
  94         ViewportEnabled,
  95         ViewportDisabled,
  96     };
  97
  98     enum PreloadState {
  99         PreloadEnabled,
 100         PreloadDisabled,
 101     };
 102
 103     HTMLPreloadScannerTest()
 104         : m_dummyPageHolder(DummyPageHolder::create())
 105     {
 106     }
 107
 108     PassRefPtrWillBeRawPtr<MediaValues> createMediaValues()
 109     {
 110         MediaValuesCached::MediaValuesCachedData data;
 111         data.viewportWidth = 500;
 112         data.viewportHeight = 600;
 113         data.deviceWidth = 700;
 114         data.deviceHeight = 800;
 115         data.devicePixelRatio = 2.0;
 116         data.colorBitsPerComponent = 24;
 117         data.monochromeBitsPerComponent = 0;
 118         data.primaryPointerType = PointerTypeFine;
 119         data.defaultFontSize = 16;
 120         data.threeDEnabled = true;
 121         data.mediaType = MediaTypeNames::screen;
 122         data.strictMode = true;
 123         data.displayMode = WebDisplayModeBrowser;
 124         return MediaValuesCached::create(data);
 125     }
 126
 127     void runSetUp(ViewportState viewportState, PreloadState preloadState = PreloadEnabled)
 128     {
 129         HTMLParserOptions options(&m_dummyPageHolder->document());
 130         KURL documentURL(ParsedURLString, "http://whatever.test/");
 131         m_dummyPageHolder->document().settings()->setViewportEnabled(viewportState == ViewportEnabled);
 132         m_dummyPageHolder->document().settings()->setViewportMetaEnabled(viewportState == ViewportEnabled);
 133         m_dummyPageHolder->document().settings()->setDoHtmlPreloadScanning(preloadState == PreloadEnabled);
 134         m_scanner = HTMLPreloadScanner::create(options, documentURL, CachedDocumentParameters::create(&m_dummyPageHolder->document(), createMediaValues()));
 135     }
 136
 137     void SetUp() override
 138     {
 139         runSetUp(ViewportEnabled);
 140     }
 141
 142     void test(TestCase testCase)
 143     {
 144         MockHTMLResourcePreloader preloader;
 145         KURL baseURL(ParsedURLString, testCase.baseURL);
 146         m_scanner->appendToEnd(String(testCase.inputHTML));
 147         m_scanner->scan(&preloader, baseURL);
 148
 149         preloader.preloadRequestVerification(testCase.type, testCase.preloadedURL, testCase.outputBaseURL, testCase.resourceWidth, testCase.preferences);
 150     }
 151
 152     void test(PreconnectTestCase testCase)
 153     {
 154         MockHTMLResourcePreloader preloader;
 155         KURL baseURL(ParsedURLString, testCase.baseURL);
 156         m_scanner->appendToEnd(String(testCase.inputHTML));
 157         m_scanner->scan(&preloader, baseURL);
 158         preloader.preconnectRequestVerification(testCase.preconnectedHost, testCase.crossOrigin);
 159     }
 160
 161     void test(ReferrerPolicyTestCase testCase)
 162     {
 163         MockHTMLResourcePreloader preloader;
 164         KURL baseURL(ParsedURLString, testCase.baseURL);
 165         m_scanner->appendToEnd(String(testCase.inputHTML));
 166         m_scanner->scan(&preloader, baseURL);
 167
 168         preloader.preloadRequestVerification(testCase.type, testCase.preloadedURL, testCase.outputBaseURL, testCase.resourceWidth, testCase.referrerPolicy);
 169     }
 170
 171 private:
 172     OwnPtr<DummyPageHolder> m_dummyPageHolder;
 173     OwnPtr<HTMLPreloadScanner> m_scanner;
 174 };
 175
 176 TEST_F(HTMLPreloadScannerTest, testImages)
 177 {
 178     TestCase testCases[] = {
 179         {"http://example.test", "<img src='bla.gif'>", "bla.gif", "http://example.test/", Resource::Image, 0},
 180         {"http://example.test", "<img srcset='bla.gif 320w, blabla.gif 640w'>", "blabla.gif", "http://example.test/", Resource::Image, 0},
 181         {"http://example.test", "<img sizes='50vw' src='bla.gif'>", "bla.gif", "http://example.test/", Resource::Image, 250},
 182         {"http://example.test", "<img sizes='50vw' src='bla.gif' srcset='bla2.gif 1x'>", "bla2.gif", "http://example.test/", Resource::Image, 250},
 183         {"http://example.test", "<img sizes='50vw' src='bla.gif' srcset='bla2.gif 0.5x'>", "bla.gif", "http://example.test/", Resource::Image, 250},
 184         {"http://example.test", "<img sizes='50vw' src='bla.gif' srcset='bla2.gif 100w'>", "bla2.gif", "http://example.test/", Resource::Image, 250},
 185         {"http://example.test", "<img sizes='50vw' src='bla.gif' srcset='bla2.gif 100w, bla3.gif 250w'>", "bla3.gif", "http://example.test/", Resource::Image, 250},
 186         {"http://example.test", "<img sizes='50vw' src='bla.gif' srcset='bla2.gif 100w, bla3.gif 250w, bla4.gif 500w'>", "bla4.gif", "http://example.test/", Resource::Image, 250},
 187         {"http://example.test", "<img src='bla.gif' srcset='bla2.gif 100w, bla3.gif 250w, bla4.gif 500w' sizes='50vw'>", "bla4.gif", "http://example.test/", Resource::Image, 250},
 188         {"http://example.test", "<img src='bla.gif' sizes='50vw' srcset='bla2.gif 100w, bla3.gif 250w, bla4.gif 500w'>", "bla4.gif", "http://example.test/", Resource::Image, 250},
 189         {"http://example.test", "<img sizes='50vw' srcset='bla2.gif 100w, bla3.gif 250w, bla4.gif 500w' src='bla.gif'>", "bla4.gif", "http://example.test/", Resource::Image, 250},
 190         {"http://example.test", "<img srcset='bla2.gif 100w, bla3.gif 250w, bla4.gif 500w' src='bla.gif' sizes='50vw'>", "bla4.gif", "http://example.test/", Resource::Image, 250},
 191         {"http://example.test", "<img srcset='bla2.gif 100w, bla3.gif 250w, bla4.gif 500w' sizes='50vw' src='bla.gif'>", "bla4.gif", "http://example.test/", Resource::Image, 250},
 192         {"http://example.test", "<img src='bla.gif' srcset='bla2.gif 100w, bla3.gif 250w, bla4.gif 500w'>", "bla4.gif", "http://example.test/", Resource::Image, 0},
 193     };
 194
 195     for (const auto& testCase : testCases)
 196         test(testCase);
 197 }
 198
 199 TEST_F(HTMLPreloadScannerTest, testImagesWithViewport)
 200 {
 201     TestCase testCases[] = {
 202         {"http://example.test", "<meta name=viewport content='width=160'><img srcset='bla.gif 320w, blabla.gif 640w'>", "bla.gif", "http://example.test/", Resource::Image, 0},
 203         {"http://example.test", "<img src='bla.gif'>", "bla.gif", "http://example.test/", Resource::Image, 0},
 204         {"http://example.test", "<img sizes='50vw' src='bla.gif'>", "bla.gif", "http://example.test/", Resource::Image, 80},
 205         {"http://example.test", "<img sizes='50vw' src='bla.gif' srcset='bla2.gif 1x'>", "bla2.gif", "http://example.test/", Resource::Image, 80},
 206         {"http://example.test", "<img sizes='50vw' src='bla.gif' srcset='bla2.gif 0.5x'>", "bla.gif", "http://example.test/", Resource::Image, 80},
 207         {"http://example.test", "<img sizes='50vw' src='bla.gif' srcset='bla2.gif 160w'>", "bla2.gif", "http://example.test/", Resource::Image, 80},
 208         {"http://example.test", "<img sizes='50vw' src='bla.gif' srcset='bla2.gif 160w, bla3.gif 250w'>", "bla2.gif", "http://example.test/", Resource::Image, 80},
 209         {"http://example.test", "<img sizes='50vw' src='bla.gif' srcset='bla2.gif 160w, bla3.gif 250w, bla4.gif 500w'>", "bla2.gif", "http://example.test/", Resource::Image, 80},
 210         {"http://example.test", "<img src='bla.gif' srcset='bla2.gif 160w, bla3.gif 250w, bla4.gif 500w' sizes='50vw'>", "bla2.gif", "http://example.test/", Resource::Image, 80},
 211         {"http://example.test", "<img src='bla.gif' sizes='50vw' srcset='bla2.gif 160w, bla3.gif 250w, bla4.gif 500w'>", "bla2.gif", "http://example.test/", Resource::Image, 80},
 212         {"http://example.test", "<img sizes='50vw' srcset='bla2.gif 160w, bla3.gif 250w, bla4.gif 500w' src='bla.gif'>", "bla2.gif", "http://example.test/", Resource::Image, 80},
 213         {"http://example.test", "<img srcset='bla2.gif 160w, bla3.gif 250w, bla4.gif 500w' src='bla.gif' sizes='50vw'>", "bla2.gif", "http://example.test/", Resource::Image, 80},
 214         {"http://example.test", "<img srcset='bla2.gif 160w, bla3.gif 250w, bla4.gif 500w' sizes='50vw' src='bla.gif'>", "bla2.gif", "http://example.test/", Resource::Image, 80},
 215     };
 216
 217     for (const auto& testCase : testCases)
 218         test(testCase);
 219 }
 220
 221 TEST_F(HTMLPreloadScannerTest, testImagesWithViewportDeviceWidth)
 222 {
 223     TestCase testCases[] = {
 224         {"http://example.test", "<meta name=viewport content='width=device-width'><img srcset='bla.gif 320w, blabla.gif 640w'>", "blabla.gif", "http://example.test/", Resource::Image, 0},
 225         {"http://example.test", "<img src='bla.gif'>", "bla.gif", "http://example.test/", Resource::Image, 0},
 226         {"http://example.test", "<img sizes='50vw' src='bla.gif'>", "bla.gif", "http://example.test/", Resource::Image, 350},
 227         {"http://example.test", "<img sizes='50vw' src='bla.gif' srcset='bla2.gif 1x'>", "bla2.gif", "http://example.test/", Resource::Image, 350},
 228         {"http://example.test", "<img sizes='50vw' src='bla.gif' srcset='bla2.gif 0.5x'>", "bla.gif", "http://example.test/", Resource::Image, 350},
 229         {"http://example.test", "<img sizes='50vw' src='bla.gif' srcset='bla2.gif 160w'>", "bla2.gif", "http://example.test/", Resource::Image, 350},
 230         {"http://example.test", "<img sizes='50vw' src='bla.gif' srcset='bla2.gif 160w, bla3.gif 250w'>", "bla3.gif", "http://example.test/", Resource::Image, 350},
 231         {"http://example.test", "<img sizes='50vw' src='bla.gif' srcset='bla2.gif 160w, bla3.gif 250w, bla4.gif 500w'>", "bla4.gif", "http://example.test/", Resource::Image, 350},
 232         {"http://example.test", "<img src='bla.gif' srcset='bla2.gif 160w, bla3.gif 250w, bla4.gif 500w' sizes='50vw'>", "bla4.gif", "http://example.test/", Resource::Image, 350},
 233         {"http://example.test", "<img src='bla.gif' sizes='50vw' srcset='bla2.gif 160w, bla3.gif 250w, bla4.gif 500w'>", "bla4.gif", "http://example.test/", Resource::Image, 350},
 234         {"http://example.test", "<img sizes='50vw' srcset='bla2.gif 160w, bla3.gif 250w, bla4.gif 500w' src='bla.gif'>", "bla4.gif", "http://example.test/", Resource::Image, 350},
 235         {"http://example.test", "<img srcset='bla2.gif 160w, bla3.gif 250w, bla4.gif 500w' src='bla.gif' sizes='50vw'>", "bla4.gif", "http://example.test/", Resource::Image, 350},
 236         {"http://example.test", "<img srcset='bla2.gif 160w, bla3.gif 250w, bla4.gif 500w' sizes='50vw' src='bla.gif'>", "bla4.gif", "http://example.test/", Resource::Image, 350},
 237     };
 238
 239     for (const auto& testCase : testCases)
 240         test(testCase);
 241 }
 242
 243 TEST_F(HTMLPreloadScannerTest, testImagesWithViewportDisabled)
 244 {
 245     runSetUp(ViewportDisabled);
 246     TestCase testCases[] = {
 247         {"http://example.test", "<meta name=viewport content='width=160'><img src='bla.gif'>", "bla.gif", "http://example.test/", Resource::Image, 0},
 248         {"http://example.test", "<img srcset='bla.gif 320w, blabla.gif 640w'>", "blabla.gif", "http://example.test/", Resource::Image, 0},
 249         {"http://example.test", "<img sizes='50vw' src='bla.gif'>", "bla.gif", "http://example.test/", Resource::Image, 250},
 250         {"http://example.test", "<img sizes='50vw' src='bla.gif' srcset='bla2.gif 1x'>", "bla2.gif", "http://example.test/", Resource::Image, 250},
 251         {"http://example.test", "<img sizes='50vw' src='bla.gif' srcset='bla2.gif 0.5x'>", "bla.gif", "http://example.test/", Resource::Image, 250},
 252         {"http://example.test", "<img sizes='50vw' src='bla.gif' srcset='bla2.gif 100w'>", "bla2.gif", "http://example.test/", Resource::Image, 250},
 253         {"http://example.test", "<img sizes='50vw' src='bla.gif' srcset='bla2.gif 100w, bla3.gif 250w'>", "bla3.gif", "http://example.test/", Resource::Image, 250},
 254         {"http://example.test", "<img sizes='50vw' src='bla.gif' srcset='bla2.gif 100w, bla3.gif 250w, bla4.gif 500w'>", "bla4.gif", "http://example.test/", Resource::Image, 250},
 255         {"http://example.test", "<img src='bla.gif' srcset='bla2.gif 100w, bla3.gif 250w, bla4.gif 500w' sizes='50vw'>", "bla4.gif", "http://example.test/", Resource::Image, 250},
 256         {"http://example.test", "<img src='bla.gif' sizes='50vw' srcset='bla2.gif 100w, bla3.gif 250w, bla4.gif 500w'>", "bla4.gif", "http://example.test/", Resource::Image, 250},
 257         {"http://example.test", "<img sizes='50vw' srcset='bla2.gif 100w, bla3.gif 250w, bla4.gif 500w' src='bla.gif'>", "bla4.gif", "http://example.test/", Resource::Image, 250},
 258         {"http://example.test", "<img srcset='bla2.gif 100w, bla3.gif 250w, bla4.gif 500w' src='bla.gif' sizes='50vw'>", "bla4.gif", "http://example.test/", Resource::Image, 250},
 259         {"http://example.test", "<img srcset='bla2.gif 100w, bla3.gif 250w, bla4.gif 500w' sizes='50vw' src='bla.gif'>", "bla4.gif", "http://example.test/", Resource::Image, 250},
 260     };
 261
 262     for (const auto& testCase : testCases)
 263         test(testCase);
 264 }
 265
 266 TEST_F(HTMLPreloadScannerTest, testViewportNoContent)
 267 {
 268     TestCase testCases[] = {
 269         {"http://example.test", "<meta name=viewport><img srcset='bla.gif 320w, blabla.gif 640w'>", "blabla.gif", "http://example.test/", Resource::Image, 0},
 270         {"http://example.test", "<meta name=viewport content=sdkbsdkjnejjha><img srcset='bla.gif 320w, blabla.gif 640w'>", "blabla.gif", "http://example.test/", Resource::Image, 0},
 271     };
 272
 273     for (const auto& testCase : testCases)
 274         test(testCase);
 275 }
 276
 277 TEST_F(HTMLPreloadScannerTest, testMetaAcceptCH)
 278 {
 279     ClientHintsPreferences dpr;
 280     ClientHintsPreferences resourceWidth;
 281     ClientHintsPreferences all;
 282     ClientHintsPreferences viewportWidth;
 283     dpr.setShouldSendDPR(true);
 284     all.setShouldSendDPR(true);
 285     resourceWidth.setShouldSendResourceWidth(true);
 286     all.setShouldSendResourceWidth(true);
 287     viewportWidth.setShouldSendViewportWidth(true);
 288     all.setShouldSendViewportWidth(true);
 289     TestCase testCases[] = {
 290         {"http://example.test", "<meta http-equiv='accept-ch' content='bla'><img srcset='bla.gif 320w, blabla.gif 640w'>", "blabla.gif", "http://example.test/", Resource::Image, 0},
 291         {"http://example.test", "<meta http-equiv='accept-ch' content='dprw'><img srcset='bla.gif 320w, blabla.gif 640w'>", "blabla.gif", "http://example.test/", Resource::Image, 0},
 292         {"http://example.test", "<meta http-equiv='accept-ch'><img srcset='bla.gif 320w, blabla.gif 640w'>", "blabla.gif", "http://example.test/", Resource::Image, 0},
 293         {"http://example.test", "<meta http-equiv='accept-ch' content='dpr \t'><img srcset='bla.gif 320w, blabla.gif 640w'>", "blabla.gif", "http://example.test/", Resource::Image, 0, dpr},
 294         {"http://example.test", "<meta http-equiv='accept-ch' content='bla,dpr \t'><img srcset='bla.gif 320w, blabla.gif 640w'>", "blabla.gif", "http://example.test/", Resource::Image, 0, dpr},
 295         {"http://example.test", "<meta http-equiv='accept-ch' content='  width  '><img sizes='100vw' srcset='bla.gif 320w, blabla.gif 640w'>", "blabla.gif", "http://example.test/", Resource::Image, 500, resourceWidth},
 296         {"http://example.test", "<meta http-equiv='accept-ch' content='  width  , wutever'><img sizes='300px' srcset='bla.gif 320w, blabla.gif 640w'>", "blabla.gif", "http://example.test/", Resource::Image, 300, resourceWidth},
 297         {"http://example.test", "<meta http-equiv='accept-ch' content='  viewport-width  '><img srcset='bla.gif 320w, blabla.gif 640w'>", "blabla.gif", "http://example.test/", Resource::Image, 0, viewportWidth},
 298         {"http://example.test", "<meta http-equiv='accept-ch' content='  viewport-width  , wutever'><img srcset='bla.gif 320w, blabla.gif 640w'>", "blabla.gif", "http://example.test/", Resource::Image, 0, viewportWidth},
 299         {"http://example.test", "<meta http-equiv='accept-ch' content='  viewport-width  ,width, wutever, dpr \t'><img sizes='90vw' srcset='bla.gif 320w, blabla.gif 640w'>", "blabla.gif", "http://example.test/", Resource::Image, 450, all},
 300     };
 301
 302     for (const auto& testCase : testCases) {
 303         runSetUp(ViewportDisabled);
 304         test(testCase);
 305     }
 306 }
 307
 308 TEST_F(HTMLPreloadScannerTest, testPreconnect)
 309 {
 310     PreconnectTestCase testCases[] = {
 311         {"http://example.test", "<link rel=preconnect href=http://example2.test>", "http://example2.test", CrossOriginAttributeNotSet},
 312         {"http://example.test", "<link rel=preconnect href=http://example2.test crossorigin=anonymous>", "http://example2.test", CrossOriginAttributeAnonymous},
 313         {"http://example.test", "<link rel=preconnect href=http://example2.test crossorigin='use-credentials'>", "http://example2.test", CrossOriginAttributeUseCredentials},
 314         {"http://example.test", "<link rel=preconnected href=http://example2.test crossorigin='use-credentials'>", nullptr, CrossOriginAttributeNotSet},
 315         {"http://example.test", "<link rel=preconnect href=ws://example2.test crossorigin='use-credentials'>", nullptr, CrossOriginAttributeNotSet},
 316     };
 317
 318     for (const auto& testCase : testCases)
 319         test(testCase);
 320 }
 321
 322 TEST_F(HTMLPreloadScannerTest, testDisables)
 323 {
 324     runSetUp(ViewportEnabled, PreloadDisabled);
 325
 326     TestCase testCases[] = {
 327         {"http://example.test", "<img src='bla.gif'>"},
 328     };
 329
 330     for (const auto& testCase : testCases)
 331         test(testCase);
 332 }
 333
 334 TEST_F(HTMLPreloadScannerTest, testPicture)
 335 {
 336     TestCase testCases[] = {
 337         {"http://example.test", "<picture><source srcset='srcset_bla.gif'><img src='bla.gif'></picture>", "srcset_bla.gif", "http://example.test/", Resource::Image, 0},
 338         {"http://example.test", "<picture><source sizes='50vw' srcset='srcset_bla.gif'><img src='bla.gif'></picture>", "srcset_bla.gif", "http://example.test/", Resource::Image, 250},
 339         {"http://example.test", "<picture><source sizes='50vw' srcset='srcset_bla.gif'><img sizes='50w' src='bla.gif'></picture>", "srcset_bla.gif", "http://example.test/", Resource::Image, 250},
 340         {"http://example.test", "<picture><source srcset='srcset_bla.gif' sizes='50vw'><img sizes='50w' src='bla.gif'></picture>", "srcset_bla.gif", "http://example.test/", Resource::Image, 250},
 341         {"http://example.test", "<picture><source srcset='srcset_bla.gif'><img sizes='50w' src='bla.gif'></picture>", "srcset_bla.gif", "http://example.test/", Resource::Image, 0},
 342     };
 343
 344     for (const auto& testCase : testCases)
 345         test(testCase);
 346 }
 347
 348 TEST_F(HTMLPreloadScannerTest, testReferrerPolicy)
 349 {
 350     ReferrerPolicyTestCase testCases[] = {
 351         { "http://example.test", "<img src='bla.gif'/>", "bla.gif", "http://example.test/", Resource::Image, 0, ReferrerPolicyDefault },
 352         { "http://example.test", "<img referrerpolicy='origin' src='bla.gif'/>", "bla.gif", "http://example.test/", Resource::Image, 0, ReferrerPolicyOrigin },
 353         { "http://example.test", "<meta name='referrer' content='not-a-valid-policy'><img src='bla.gif'/>", "bla.gif", "http://example.test/", Resource::Image, 0, ReferrerPolicyDefault },
 354         { "http://example.test", "<img referrerpolicy='origin' referrerpolicy='origin-when-crossorigin' src='bla.gif'/>", "bla.gif", "http://example.test/", Resource::Image, 0, ReferrerPolicyOrigin },
 355         { "http://example.test", "<img referrerpolicy='not-a-valid-policy' src='bla.gif'/>", "bla.gif", "http://example.test/", Resource::Image, 0, ReferrerPolicyDefault },
 356         { "http://example.test", "<meta name='referrer' content='no-referrer'><img referrerpolicy='origin' src='bla.gif'/>", "bla.gif", "http://example.test/", Resource::Image, 0, ReferrerPolicyOrigin },
 357         // The scanner's state is not reset between test cases, so all subsequent test cases have a document referrer policy of no-referrer.
 358         { "http://example.test", "<img referrerpolicy='not-a-valid-policy' src='bla.gif'/>", "bla.gif", "http://example.test/", Resource::Image, 0, ReferrerPolicyNever },
 359         { "http://example.test", "<img src='bla.gif'/>", "bla.gif", "http://example.test/", Resource::Image, 0, ReferrerPolicyNever }
 360     };
 361
 362     for (const auto& testCase : testCases)
 363         test(testCase);
 364 }
 365
 366 } // namespace blink