1 // Copyright 2013 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/metrics/variations/variations_http_header_provider.h" 6 7 #include <string> 8 9 #include "base/base64.h" 10 #include "base/message_loop/message_loop.h" 11 #include "base/metrics/field_trial.h" 12 #include "base/run_loop.h" 13 #include "chrome/common/metrics/proto/chrome_experiments.pb.h" 14 #include "components/variations/entropy_provider.h" 15 #include "components/variations/variations_associated_data.h" 16 #include "net/http/http_request_headers.h" 17 #include "testing/gtest/include/gtest/gtest.h" 18 #include "url/gurl.h" 19 20 namespace chrome_variations { 21 22 namespace { 23 24 // Decodes the variations header and extracts the variation ids. 25 bool ExtractVariationIds(const std::string& variations, 26 std::set<VariationID>* variation_ids, 27 std::set<VariationID>* trigger_ids) { 28 std::string serialized_proto; 29 if (!base::Base64Decode(variations, &serialized_proto)) 30 return false; 31 metrics::ChromeVariations proto; 32 if (!proto.ParseFromString(serialized_proto)) 33 return false; 34 for (int i = 0; i < proto.variation_id_size(); ++i) 35 variation_ids->insert(proto.variation_id(i)); 36 for (int i = 0; i < proto.trigger_variation_id_size(); ++i) 37 trigger_ids->insert(proto.trigger_variation_id(i)); 38 return true; 39 } 40 41 scoped_refptr<base::FieldTrial> CreateTrialAndAssociateId( 42 const std::string& trial_name, 43 const std::string& default_group_name, 44 IDCollectionKey key, 45 VariationID id) { 46 scoped_refptr<base::FieldTrial> trial( 47 base::FieldTrialList::CreateFieldTrial(trial_name, default_group_name)); 48 49 chrome_variations::AssociateGoogleVariationID(key, trial->trial_name(), 50 trial->group_name(), id); 51 52 return trial; 53 } 54 55 } // namespace 56 57 class VariationsHttpHeaderProviderTest : public ::testing::Test { 58 public: 59 VariationsHttpHeaderProviderTest() {} 60 61 virtual ~VariationsHttpHeaderProviderTest() {} 62 63 virtual void TearDown() OVERRIDE { 64 testing::ClearAllVariationIDs(); 65 } 66 }; 67 68 TEST_F(VariationsHttpHeaderProviderTest, ShouldAppendHeaders) { 69 struct { 70 const char* url; 71 bool should_append_headers; 72 } cases[] = { 73 { "http://google.com", true }, 74 { "http://www.google.com", true }, 75 { "http://m.google.com", true }, 76 { "http://google.ca", true }, 77 { "https://google.ca", true }, 78 { "http://google.co.uk", true }, 79 { "http://google.co.uk:8080/", true }, 80 { "http://www.google.co.uk:8080/", true }, 81 { "http://google", false }, 82 83 { "http://youtube.com", true }, 84 { "http://www.youtube.com", true }, 85 { "http://www.youtube.ca", true }, 86 { "http://www.youtube.co.uk:8080/", true }, 87 { "https://www.youtube.com", true }, 88 { "http://youtube", false }, 89 90 { "http://www.yahoo.com", false }, 91 92 { "http://ad.doubleclick.net", true }, 93 { "https://a.b.c.doubleclick.net", true }, 94 { "https://a.b.c.doubleclick.net:8081", true }, 95 { "http://www.doubleclick.com", true }, 96 { "http://www.doubleclick.org", false }, 97 { "http://www.doubleclick.net.com", false }, 98 { "https://www.doubleclick.net.com", false }, 99 100 { "http://ad.googlesyndication.com", true }, 101 { "https://a.b.c.googlesyndication.com", true }, 102 { "https://a.b.c.googlesyndication.com:8080", true }, 103 { "http://www.doubleclick.edu", false }, 104 { "http://www.googlesyndication.com.edu", false }, 105 { "https://www.googlesyndication.com.com", false }, 106 107 { "http://www.googleadservices.com", true }, 108 { "http://www.googleadservices.com:8080", true }, 109 { "https://www.googleadservices.com", true }, 110 { "https://www.internal.googleadservices.com", true }, 111 { "https://www2.googleadservices.com", true }, 112 { "https://www.googleadservices.org", false }, 113 { "https://www.googleadservices.com.co.uk", false }, 114 115 { "http://WWW.ANDROID.COM", true }, 116 { "http://www.android.com", true }, 117 { "http://www.doubleclick.com", true }, 118 { "http://www.doubleclick.net", true }, 119 { "http://www.ggpht.com", true }, 120 { "http://www.googleadservices.com", true }, 121 { "http://www.googleapis.com", true }, 122 { "http://www.googlesyndication.com", true }, 123 { "http://www.googleusercontent.com", true }, 124 { "http://www.googlevideo.com", true }, 125 { "http://ssl.gstatic.com", true }, 126 { "http://www.gstatic.com", true }, 127 { "http://www.ytimg.com", true }, 128 { "http://wwwytimg.com", false }, 129 { "http://ytimg.com", false }, 130 131 { "http://www.android.org", false }, 132 { "http://www.doubleclick.org", false }, 133 { "http://www.doubleclick.net", true }, 134 { "http://www.ggpht.org", false }, 135 { "http://www.googleadservices.org", false }, 136 { "http://www.googleapis.org", false }, 137 { "http://www.googlesyndication.org", false }, 138 { "http://www.googleusercontent.org", false }, 139 { "http://www.googlevideo.org", false }, 140 { "http://ssl.gstatic.org", false }, 141 { "http://www.gstatic.org", false }, 142 { "http://www.ytimg.org", false }, 143 144 { "http://a.b.android.com", true }, 145 { "http://a.b.doubleclick.com", true }, 146 { "http://a.b.doubleclick.net", true }, 147 { "http://a.b.ggpht.com", true }, 148 { "http://a.b.googleadservices.com", true }, 149 { "http://a.b.googleapis.com", true }, 150 { "http://a.b.googlesyndication.com", true }, 151 { "http://a.b.googleusercontent.com", true }, 152 { "http://a.b.googlevideo.com", true }, 153 { "http://ssl.gstatic.com", true }, 154 { "http://a.b.gstatic.com", true }, 155 { "http://a.b.ytimg.com", true }, 156 157 }; 158 159 for (size_t i = 0; i < ARRAYSIZE_UNSAFE(cases); ++i) { 160 const GURL url(cases[i].url); 161 EXPECT_EQ(cases[i].should_append_headers, 162 VariationsHttpHeaderProvider::ShouldAppendHeaders(url)) << url; 163 } 164 } 165 166 TEST_F(VariationsHttpHeaderProviderTest, SetDefaultVariationIds_Valid) { 167 base::MessageLoop loop; 168 VariationsHttpHeaderProvider provider; 169 GURL url("http://www.google.com"); 170 net::HttpRequestHeaders headers; 171 std::string variations; 172 173 // Valid experiment ids. 174 EXPECT_TRUE(provider.SetDefaultVariationIds("12,456,t789")); 175 provider.InitVariationIDsCacheIfNeeded(); 176 provider.AppendHeaders(url, false, false, &headers); 177 EXPECT_TRUE(headers.HasHeader("X-Client-Data")); 178 headers.GetHeader("X-Client-Data", &variations); 179 std::set<VariationID> variation_ids; 180 std::set<VariationID> trigger_ids; 181 ASSERT_TRUE(ExtractVariationIds(variations, &variation_ids, &trigger_ids)); 182 EXPECT_TRUE(variation_ids.find(12) != variation_ids.end()); 183 EXPECT_TRUE(variation_ids.find(456) != variation_ids.end()); 184 EXPECT_TRUE(trigger_ids.find(789) != trigger_ids.end()); 185 EXPECT_FALSE(variation_ids.find(789) != variation_ids.end()); 186 } 187 188 TEST_F(VariationsHttpHeaderProviderTest, SetDefaultVariationIds_Invalid) { 189 base::MessageLoop loop; 190 VariationsHttpHeaderProvider provider; 191 GURL url("http://www.google.com"); 192 net::HttpRequestHeaders headers; 193 194 // Invalid experiment ids. 195 EXPECT_FALSE(provider.SetDefaultVariationIds("abcd12,456")); 196 provider.InitVariationIDsCacheIfNeeded(); 197 provider.AppendHeaders(url, false, false, &headers); 198 EXPECT_FALSE(headers.HasHeader("X-Client-Data")); 199 200 // Invalid trigger experiment id 201 EXPECT_FALSE(provider.SetDefaultVariationIds("12,tabc456")); 202 provider.InitVariationIDsCacheIfNeeded(); 203 provider.AppendHeaders(url, false, false, &headers); 204 EXPECT_FALSE(headers.HasHeader("X-Client-Data")); 205 } 206 207 TEST_F(VariationsHttpHeaderProviderTest, OnFieldTrialGroupFinalized) { 208 base::MessageLoop loop; 209 base::FieldTrialList field_trial_list( 210 new metrics::SHA1EntropyProvider("test")); 211 VariationsHttpHeaderProvider provider; 212 provider.InitVariationIDsCacheIfNeeded(); 213 214 const std::string default_name = "default"; 215 scoped_refptr<base::FieldTrial> trial_1(CreateTrialAndAssociateId( 216 "t1", default_name, GOOGLE_WEB_PROPERTIES, 123)); 217 218 ASSERT_EQ(default_name, trial_1->group_name()); 219 220 scoped_refptr<base::FieldTrial> trial_2(CreateTrialAndAssociateId( 221 "t2", default_name, GOOGLE_WEB_PROPERTIES_TRIGGER, 456)); 222 223 ASSERT_EQ(default_name, trial_2->group_name()); 224 225 // Run the message loop to make sure OnFieldTrialGroupFinalized is called for 226 // the two field trials. 227 base::RunLoop().RunUntilIdle(); 228 229 GURL url("http://www.google.com"); 230 net::HttpRequestHeaders headers; 231 provider.AppendHeaders(url, false, false, &headers); 232 std::string variations; 233 headers.GetHeader("X-Client-Data", &variations); 234 235 std::set<VariationID> variation_ids; 236 std::set<VariationID> trigger_ids; 237 ASSERT_TRUE(ExtractVariationIds(variations, &variation_ids, &trigger_ids)); 238 EXPECT_TRUE(variation_ids.find(123) != variation_ids.end()); 239 EXPECT_TRUE(trigger_ids.find(456) != trigger_ids.end()); 240 } 241 242 } // namespace chrome_variations 243
