chrome/browser/prerender/prerender_util_unittest.cc

   1 // Copyright (c) 2011 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 "chrome/browser/prerender/prerender_util.h"
   6
   7 #include "base/metrics/histogram.h"
   8 #include "base/metrics/histogram_samples.h"
   9 #include "base/metrics/statistics_recorder.h"
  10 #include "net/http/http_response_headers.h"
  11 #include "testing/gtest/include/gtest/gtest.h"
  12 #include "url/gurl.h"
  13
  14 namespace prerender {
  15
  16 class PrerenderUtilTest : public testing::Test {
  17  public:
  18   PrerenderUtilTest() {
  19   }
  20 };
  21
  22 // Ensure that extracting a urlencoded URL in the url= query string component
  23 // works.
  24 TEST_F(PrerenderUtilTest, ExtractURLInQueryStringTest) {
  25   GURL result;
  26   EXPECT_TRUE(MaybeGetQueryStringBasedAliasURL(
  27       GURL("http://www.google.com/url?sa=t&source=web&cd=1&ved=0CBcQFjAA&url=http%3A%2F%2Fwww.abercrombie.com%2Fwebapp%2Fwcs%2Fstores%2Fservlet%2FStoreLocator%3FcatalogId%3D%26storeId%3D10051%26langId%3D-1&rct=j&q=allinurl%3A%26&ei=KLyUTYGSEdTWiAKUmLCdCQ&usg=AFQjCNF8nJ2MpBFfr1ijO39_f22bcKyccw&sig2=2ymyGpO0unJwU1d4kdCUjQ"),
  28       &result));
  29   ASSERT_EQ(GURL("http://www.abercrombie.com/webapp/wcs/stores/servlet/StoreLocator?catalogId=&storeId=10051&langId=-1").spec(), result.spec());
  30   EXPECT_FALSE(MaybeGetQueryStringBasedAliasURL(
  31       GURL("http://www.google.com/url?sadf=test&blah=blahblahblah"), &result));
  32   EXPECT_FALSE(MaybeGetQueryStringBasedAliasURL(
  33       GURL("http://www.google.com/?url=INVALIDurlsAREsoMUCHfun.com"), &result));
  34   EXPECT_TRUE(MaybeGetQueryStringBasedAliasURL(
  35       GURL("http://www.google.com/?url=http://validURLSareGREAT.com"),
  36       &result));
  37   ASSERT_EQ(GURL("http://validURLSareGREAT.com").spec(), result.spec());
  38 }
  39
  40 // Ensure that extracting an experiment in the lpe= query string component
  41 // works.
  42 TEST_F(PrerenderUtilTest, ExtractExperimentInQueryStringTest) {
  43   EXPECT_EQ(GetQueryStringBasedExperiment(
  44       GURL("http://www.google.com/url?sa=t&source=web&cd=1&ved=0CBcQFjAA&url=http%3A%2F%2Fwww.abercrombie.com%2Fwebapp%2Fwcs%2Fstores%2Fservlet%2FStoreLocator%3FcatalogId%3D%26storeId%3D10051%26langId%3D-1&rct=j&q=allinurl%3A%26&ei=KLyUTYGSEdTWiAKUmLCdCQ&usg=AFQjCNF8nJ2MpBFfr1ijO39_f22bcKyccw&sig2=2ymyGpO0unJwU1d4kdCUjQ&lpe=4&asdf=test")), 4);
  45   EXPECT_EQ(GetQueryStringBasedExperiment(
  46       GURL("http://www.google.com/test.php?a=b")), kNoExperiment);
  47   EXPECT_EQ(GetQueryStringBasedExperiment(
  48       GURL("http://www.google.com/test.php?lpe=5")), 5);
  49   EXPECT_EQ(GetQueryStringBasedExperiment(
  50       GURL("http://www.google.com/test.php?lpe=50")), kNoExperiment);
  51   EXPECT_EQ(GetQueryStringBasedExperiment(
  52       GURL("http://www.google.com/test.php?lpe=0")), kNoExperiment);
  53   EXPECT_EQ(GetQueryStringBasedExperiment(
  54       GURL("http://www.google.com/test.php?lpe=10")), kNoExperiment);
  55 }
  56
  57 // Ensure that we detect Google search result URLs correctly.
  58 TEST_F(PrerenderUtilTest, DetectGoogleSearchREsultURLTest) {
  59   EXPECT_TRUE(IsGoogleSearchResultURL(GURL("http://www.google.com/#asdf")));
  60   EXPECT_TRUE(IsGoogleSearchResultURL(GURL("http://www.google.com/")));
  61   EXPECT_TRUE(IsGoogleSearchResultURL(GURL("http://www.google.com/?a=b")));
  62   EXPECT_TRUE(IsGoogleSearchResultURL(
  63       GURL("http://www.google.com/search?q=hi")));
  64   EXPECT_TRUE(IsGoogleSearchResultURL(GURL("http://www.google.com/search")));
  65   EXPECT_TRUE(IsGoogleSearchResultURL(GURL("http://www.google.com/webhp")));
  66   EXPECT_TRUE(IsGoogleSearchResultURL(
  67       GURL("http://www.google.com/webhp?a=b#123")));
  68   EXPECT_FALSE(IsGoogleSearchResultURL(GURL("http://www.google.com/imgres")));
  69   EXPECT_FALSE(IsGoogleSearchResultURL(
  70       GURL("http://www.google.com/imgres?q=hi")));
  71   EXPECT_FALSE(IsGoogleSearchResultURL(
  72       GURL("http://www.google.com/imgres?q=hi#123")));
  73   EXPECT_FALSE(IsGoogleSearchResultURL(GURL("http://google.com/search")));
  74   EXPECT_TRUE(IsGoogleSearchResultURL(GURL("http://WWW.GooGLE.CoM/search")));
  75   EXPECT_FALSE(IsGoogleSearchResultURL(GURL("http://WWW.GooGLE.CoM/SeArcH")));
  76   EXPECT_TRUE(IsGoogleSearchResultURL(GURL("http://www.google.co.uk/search")));
  77   EXPECT_FALSE(IsGoogleSearchResultURL(GURL("http://google.co.uk/search")));
  78   EXPECT_FALSE(IsGoogleSearchResultURL(GURL("http://www.chromium.org/search")));
  79 }
  80
  81 // Ensure that we count PageSpeed headers correctly.
  82 TEST_F(PrerenderUtilTest, CountPageSpeedHeadersTest) {
  83   base::StatisticsRecorder::Initialize();
  84   GURL url("http://google.com");
  85   std::string temp("HTTP/1.1 200 OK\n\n");
  86   std::replace(temp.begin(), temp.end(), '\n', '\0');
  87   scoped_refptr<net::HttpResponseHeaders> headers(
  88       new net::HttpResponseHeaders(temp));
  89
  90   int num_responses = 0;
  91   int num_mps = 0;
  92   int num_ngx = 0;
  93   int num_pss = 0;
  94   int num_other = 0;
  95   int num_bucket_1  = 0;  // unrecognized format/value bucket
  96   int num_bucket_30 = 0;  // 1.2.24.1 bucket
  97   int num_bucket_33 = 0;  // 1.3.25.2 bucket
  98
  99   scoped_ptr<base::HistogramSamples> server_samples;
 100   scoped_ptr<base::HistogramSamples> version_samples;
 101
 102   // No PageSpeed header. The VersionCounts histogram isn't created yet.
 103   GatherPagespeedData(ResourceType::MAIN_FRAME, url, headers.get());
 104   base::HistogramBase* server_histogram =
 105       base::StatisticsRecorder::FindHistogram(
 106           "Prerender.PagespeedHeader.ServerCounts");
 107   ASSERT_TRUE(server_histogram != NULL);
 108   ASSERT_TRUE(NULL == base::StatisticsRecorder::FindHistogram(
 109       "Prerender.PagespeedHeader.VersionCounts"));
 110
 111   server_samples = server_histogram->SnapshotSamples();
 112   EXPECT_EQ(++num_responses, server_samples->GetCount(0));
 113   EXPECT_EQ(  num_mps,       server_samples->GetCount(1));
 114   EXPECT_EQ(  num_ngx,       server_samples->GetCount(2));
 115   EXPECT_EQ(  num_pss,       server_samples->GetCount(3));
 116   EXPECT_EQ(  num_other,     server_samples->GetCount(4));
 117
 118   // X-Mod-Pagespeed header in expected format. VersionCounts now exists.
 119   headers->AddHeader("X-Mod-Pagespeed: 1.2.24.1-2300");
 120   GatherPagespeedData(ResourceType::MAIN_FRAME, url, headers.get());
 121   base::HistogramBase* version_histogram =
 122       base::StatisticsRecorder::FindHistogram(
 123           "Prerender.PagespeedHeader.VersionCounts");
 124   ASSERT_TRUE(version_histogram != NULL);
 125   server_samples = server_histogram->SnapshotSamples();
 126   version_samples = version_histogram->SnapshotSamples();
 127   EXPECT_EQ(++num_responses, server_samples->GetCount(0));
 128   EXPECT_EQ(++num_mps,       server_samples->GetCount(1));
 129   EXPECT_EQ(  num_ngx,       server_samples->GetCount(2));
 130   EXPECT_EQ(  num_pss,       server_samples->GetCount(3));
 131   EXPECT_EQ(  num_other,     server_samples->GetCount(4));
 132   EXPECT_EQ(  num_bucket_1,  version_samples->GetCount(1));
 133   EXPECT_EQ(++num_bucket_30, version_samples->GetCount(30));  // +1 for #30
 134   EXPECT_EQ(  num_bucket_33, version_samples->GetCount(33));
 135   headers->RemoveHeader("X-Mod-Pagespeed");
 136
 137   // X-Mod-Pagespeed header in unexpected format.
 138   headers->AddHeader("X-Mod-Pagespeed: Powered By PageSpeed!");
 139   GatherPagespeedData(ResourceType::MAIN_FRAME, url, headers.get());
 140   server_samples = server_histogram->SnapshotSamples();
 141   version_samples = version_histogram->SnapshotSamples();
 142   EXPECT_EQ(++num_responses, server_samples->GetCount(0));
 143   EXPECT_EQ(++num_mps,       server_samples->GetCount(1));
 144   EXPECT_EQ(  num_ngx,       server_samples->GetCount(2));
 145   EXPECT_EQ(  num_pss,       server_samples->GetCount(3));
 146   EXPECT_EQ(  num_other,     server_samples->GetCount(4));
 147   EXPECT_EQ(++num_bucket_1,  version_samples->GetCount(1));   // +1 for 'huh?'
 148   EXPECT_EQ(  num_bucket_30, version_samples->GetCount(30));
 149   EXPECT_EQ(  num_bucket_33, version_samples->GetCount(33));
 150   headers->RemoveHeader("X-Mod-Pagespeed");
 151
 152   // X-Page-Speed header in mod_pagespeed format (so ngx_pagespeed).
 153   headers->AddHeader("X-Page-Speed: 1.3.25.2-2530");
 154   GatherPagespeedData(ResourceType::MAIN_FRAME, url, headers.get());
 155   server_samples = server_histogram->SnapshotSamples();
 156   version_samples = version_histogram->SnapshotSamples();
 157   EXPECT_EQ(++num_responses, server_samples->GetCount(0));
 158   EXPECT_EQ(  num_mps,       server_samples->GetCount(1));
 159   EXPECT_EQ(++num_ngx,       server_samples->GetCount(2));
 160   EXPECT_EQ(  num_pss,       server_samples->GetCount(3));
 161   EXPECT_EQ(  num_other,     server_samples->GetCount(4));
 162   EXPECT_EQ(  num_bucket_1,  version_samples->GetCount(1));
 163   EXPECT_EQ(  num_bucket_30, version_samples->GetCount(30));
 164   EXPECT_EQ(++num_bucket_33, version_samples->GetCount(33));  // +1 for #33
 165   headers->RemoveHeader("X-Page-Speed");
 166
 167   // X-Page-Speed header in PageSpeed Service format.
 168   headers->AddHeader("X-Page-Speed: 97_4_bo");
 169   GatherPagespeedData(ResourceType::MAIN_FRAME, url, headers.get());
 170   server_samples = server_histogram->SnapshotSamples();
 171   version_samples = version_histogram->SnapshotSamples();
 172   EXPECT_EQ(++num_responses, server_samples->GetCount(0));
 173   EXPECT_EQ(  num_mps,       server_samples->GetCount(1));    // no change
 174   EXPECT_EQ(  num_ngx,       server_samples->GetCount(2));
 175   EXPECT_EQ(++num_pss,       server_samples->GetCount(3));    // +1 for PSS
 176   EXPECT_EQ(  num_other,     server_samples->GetCount(4));
 177   EXPECT_EQ(  num_bucket_1,  version_samples->GetCount(1));
 178   EXPECT_EQ(  num_bucket_30, version_samples->GetCount(30));
 179   EXPECT_EQ(  num_bucket_33, version_samples->GetCount(33));
 180   headers->RemoveHeader("X-Page-Speed");
 181
 182   // X-Page-Speed header in an unrecognized format (IISpeed in this case).
 183   headers->AddHeader("X-Page-Speed: 1.0PS1.2-20130615");
 184   GatherPagespeedData(ResourceType::MAIN_FRAME, url, headers.get());
 185   server_samples = server_histogram->SnapshotSamples();
 186   version_samples = version_histogram->SnapshotSamples();
 187   EXPECT_EQ(++num_responses, server_samples->GetCount(0));
 188   EXPECT_EQ(  num_mps,       server_samples->GetCount(1));    // no change
 189   EXPECT_EQ(  num_pss,       server_samples->GetCount(3));
 190   EXPECT_EQ(++num_other,     server_samples->GetCount(4));    // +1 for 'other'
 191   EXPECT_EQ(  num_bucket_1,  version_samples->GetCount(1));
 192   EXPECT_EQ(  num_bucket_30, version_samples->GetCount(30));
 193   EXPECT_EQ(  num_bucket_33, version_samples->GetCount(33));
 194
 195   // Not a main frame => not counted at all.
 196   GatherPagespeedData(ResourceType::SUB_FRAME, url, headers.get());
 197   server_samples = server_histogram->SnapshotSamples();
 198   version_samples = version_histogram->SnapshotSamples();
 199   EXPECT_EQ(  num_responses, server_samples->GetCount(0));
 200   EXPECT_EQ(  num_mps,       server_samples->GetCount(1));
 201   EXPECT_EQ(  num_ngx,       server_samples->GetCount(2));
 202   EXPECT_EQ(  num_pss,       server_samples->GetCount(3));
 203   EXPECT_EQ(  num_other,     server_samples->GetCount(4));
 204   EXPECT_EQ(  num_bucket_1,  version_samples->GetCount(1));
 205   EXPECT_EQ(  num_bucket_30, version_samples->GetCount(30));
 206   EXPECT_EQ(  num_bucket_33, version_samples->GetCount(33));
 207
 208   // Not a http/https URL => not counted at all.
 209   GURL data_url("data:image/png;base64,yadda yadda==");
 210   GatherPagespeedData(ResourceType::MAIN_FRAME, data_url, headers.get());
 211   server_samples = server_histogram->SnapshotSamples();
 212   version_samples = version_histogram->SnapshotSamples();
 213   EXPECT_EQ(  num_responses, server_samples->GetCount(0));
 214   EXPECT_EQ(  num_mps,       server_samples->GetCount(1));
 215   EXPECT_EQ(  num_ngx,       server_samples->GetCount(2));
 216   EXPECT_EQ(  num_pss,       server_samples->GetCount(3));
 217   EXPECT_EQ(  num_other,     server_samples->GetCount(4));
 218   EXPECT_EQ(  num_bucket_1,  version_samples->GetCount(1));
 219   EXPECT_EQ(  num_bucket_30, version_samples->GetCount(30));
 220   EXPECT_EQ(  num_bucket_33, version_samples->GetCount(33));
 221
 222   headers->RemoveHeader("X-Page-Speed");
 223 }
 224
 225 }  // namespace prerender