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| 1 // Copyright (c) 2012 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 // Tests for the Variations Helpers. | |
| 6 | |
| 7 #include <set> | |
| 8 | |
| 9 #include "base/memory/scoped_ptr.h" | |
| 10 #include "base/message_loop.h" | |
| 11 #include "base/metrics/field_trial.h" | |
| 12 #include "base/time.h" | |
| 13 #include "base/utf_string_conversions.h" | |
| 14 #include "chrome/common/metrics/variations_util.h" | |
| 15 #include "content/public/test/test_browser_thread.h" | |
| 16 #include "testing/gtest/include/gtest/gtest.h" | |
| 17 | |
| 18 namespace chrome_variations { | |
| 19 | |
| 20 namespace { | |
| 21 | |
| 22 // Convenience helper to retrieve the chrome_variations::VariationID for a | |
| 23 // FieldTrial. Note that this will do the group assignment in |trial| if not | |
| 24 // already done. | |
| 25 chrome_variations::VariationID GetIDForTrial(base::FieldTrial* trial) { | |
| 26 return GetGoogleVariationID(trial->name(), trial->group_name()); | |
| 27 } | |
| 28 | |
| 29 } // namespace | |
| 30 | |
| 31 class VariationsHelperTest : public ::testing::Test { | |
| 32 public: | |
| 33 VariationsHelperTest() { | |
| 34 // Since the API can only be called on the UI thread, we have to fake that | |
| 35 // we're on it. | |
| 36 ui_thread_.reset(new content::TestBrowserThread( | |
| 37 content::BrowserThread::UI, &message_loop_)); | |
| 38 | |
| 39 base::Time now = base::Time::NowFromSystemTime(); | |
| 40 base::TimeDelta oneYear = base::TimeDelta::FromDays(365); | |
| 41 base::Time::Exploded exploded; | |
| 42 | |
| 43 base::Time next_year_time = now + oneYear; | |
| 44 next_year_time.LocalExplode(&exploded); | |
| 45 next_year_ = exploded.year; | |
| 46 } | |
| 47 | |
| 48 protected: | |
| 49 int next_year_; | |
| 50 | |
| 51 private: | |
| 52 MessageLoop message_loop_; | |
| 53 scoped_ptr<content::TestBrowserThread> ui_thread_; | |
| 54 }; | |
| 55 | |
| 56 TEST_F(VariationsHelperTest, HashName) { | |
| 57 // Make sure hashing is stable on all platforms. | |
| 58 struct { | |
| 59 const char* name; | |
| 60 uint32 hash_value; | |
| 61 } known_hashes[] = { | |
| 62 {"a", 937752454u}, | |
| 63 {"1", 723085877u}, | |
| 64 {"Trial Name", 2713117220u}, | |
| 65 {"Group Name", 3201815843u}, | |
| 66 {"My Favorite Experiment", 3722155194u}, | |
| 67 {"My Awesome Group Name", 4109503236u}, | |
| 68 {"abcdefghijklmonpqrstuvwxyz", 787728696u}, | |
| 69 {"0123456789ABCDEF", 348858318U} | |
| 70 }; | |
| 71 for (size_t i = 0; i < ARRAYSIZE_UNSAFE(known_hashes); ++i) { | |
| 72 EXPECT_EQ(known_hashes[i].hash_value, | |
| 73 testing::TestHashName(known_hashes[i].name)); | |
| 74 } | |
| 75 } | |
| 76 | |
| 77 TEST_F(VariationsHelperTest, GetFieldTrialSelectedGroups) { | |
| 78 typedef std::set<SelectedGroupId, SelectedGroupIdCompare> SelectedGroupIdSet; | |
| 79 std::string trial_one("trial one"); | |
| 80 std::string group_one("group one"); | |
| 81 std::string trial_two("trial two"); | |
| 82 std::string group_two("group two"); | |
| 83 | |
| 84 base::FieldTrial::SelectedGroups selected_groups; | |
| 85 base::FieldTrial::SelectedGroup selected_group; | |
| 86 selected_group.trial = trial_one; | |
| 87 selected_group.group = group_one; | |
| 88 selected_groups.push_back(selected_group); | |
| 89 | |
| 90 selected_group.trial = trial_two; | |
| 91 selected_group.group = group_two; | |
| 92 selected_groups.push_back(selected_group); | |
| 93 | |
| 94 // Create our expected groups of IDs. | |
| 95 SelectedGroupIdSet expected_groups; | |
| 96 SelectedGroupId name_group_id; | |
| 97 name_group_id.name = testing::TestHashName(trial_one); | |
| 98 name_group_id.group = testing::TestHashName(group_one); | |
| 99 expected_groups.insert(name_group_id); | |
| 100 name_group_id.name = testing::TestHashName(trial_two); | |
| 101 name_group_id.group = testing::TestHashName(group_two); | |
| 102 expected_groups.insert(name_group_id); | |
| 103 | |
| 104 std::vector<SelectedGroupId> selected_group_ids; | |
| 105 testing::TestGetFieldTrialSelectedGroupIdsForSelectedGroups( | |
| 106 selected_groups, &selected_group_ids); | |
| 107 EXPECT_EQ(2U, selected_group_ids.size()); | |
| 108 for (size_t i = 0; i < selected_group_ids.size(); ++i) { | |
| 109 SelectedGroupIdSet::iterator expected_group = | |
| 110 expected_groups.find(selected_group_ids[i]); | |
| 111 EXPECT_FALSE(expected_group == expected_groups.end()); | |
| 112 expected_groups.erase(expected_group); | |
| 113 } | |
| 114 EXPECT_EQ(0U, expected_groups.size()); | |
| 115 } | |
| 116 | |
| 117 // Test that if the trial is immediately disabled, GetGoogleVariationID just | |
| 118 // returns the empty ID. | |
| 119 TEST_F(VariationsHelperTest, DisableImmediately) { | |
| 120 int default_group_number = -1; | |
| 121 scoped_refptr<base::FieldTrial> trial( | |
| 122 base::FieldTrialList::FactoryGetFieldTrial("trial", 100, "default", | |
| 123 next_year_, 12, 12, | |
| 124 &default_group_number)); | |
| 125 trial->Disable(); | |
| 126 | |
| 127 ASSERT_EQ(default_group_number, trial->group()); | |
| 128 ASSERT_EQ(chrome_variations::kEmptyID, GetIDForTrial(trial.get())); | |
| 129 } | |
| 130 | |
| 131 // Test that successfully associating the FieldTrial with some ID, and then | |
| 132 // disabling the FieldTrial actually makes GetGoogleVariationID correctly | |
| 133 // return the empty ID. | |
| 134 TEST_F(VariationsHelperTest, DisableAfterInitialization) { | |
| 135 const std::string default_name = "default"; | |
| 136 const std::string non_default_name = "non_default"; | |
| 137 | |
| 138 scoped_refptr<base::FieldTrial> trial( | |
| 139 base::FieldTrialList::FactoryGetFieldTrial("trial", 100, default_name, | |
| 140 next_year_, 12, 12, NULL)); | |
| 141 trial->AppendGroup(non_default_name, 100); | |
| 142 AssociateGoogleVariationID( | |
| 143 trial->name(), default_name, chrome_variations::kTestValueA); | |
| 144 AssociateGoogleVariationID( | |
| 145 trial->name(), non_default_name, chrome_variations::kTestValueB); | |
| 146 ASSERT_EQ(non_default_name, trial->group_name()); | |
| 147 ASSERT_EQ(chrome_variations::kTestValueB, GetIDForTrial(trial.get())); | |
| 148 trial->Disable(); | |
| 149 ASSERT_EQ(default_name, trial->group_name()); | |
| 150 ASSERT_EQ(chrome_variations::kTestValueA, GetIDForTrial(trial.get())); | |
| 151 } | |
| 152 | |
| 153 // Test various successful association cases. | |
| 154 TEST_F(VariationsHelperTest, AssociateGoogleVariationID) { | |
| 155 const std::string default_name1 = "default1"; | |
| 156 scoped_refptr<base::FieldTrial> trial_true( | |
| 157 base::FieldTrialList::FactoryGetFieldTrial("d1", 10, default_name1, | |
| 158 next_year_, 12, 31, NULL)); | |
| 159 const std::string winner = "TheWinner"; | |
| 160 int winner_group = trial_true->AppendGroup(winner, 10); | |
| 161 | |
| 162 // Set GoogleVariationIDs so we can verify that they were chosen correctly. | |
| 163 AssociateGoogleVariationID( | |
| 164 trial_true->name(), default_name1, chrome_variations::kTestValueA); | |
| 165 AssociateGoogleVariationID( | |
| 166 trial_true->name(), winner, chrome_variations::kTestValueB); | |
| 167 | |
| 168 EXPECT_EQ(winner_group, trial_true->group()); | |
| 169 EXPECT_EQ(winner, trial_true->group_name()); | |
| 170 EXPECT_EQ(chrome_variations::kTestValueB, GetIDForTrial(trial_true.get())); | |
| 171 | |
| 172 const std::string default_name2 = "default2"; | |
| 173 scoped_refptr<base::FieldTrial> trial_false( | |
| 174 base::FieldTrialList::FactoryGetFieldTrial("d2", 10, default_name2, | |
| 175 next_year_, 12, 31, NULL)); | |
| 176 const std::string loser = "ALoser"; | |
| 177 int loser_group = trial_false->AppendGroup(loser, 0); | |
| 178 | |
| 179 AssociateGoogleVariationID( | |
| 180 trial_false->name(), default_name2, chrome_variations::kTestValueA); | |
| 181 AssociateGoogleVariationID( | |
| 182 trial_false->name(), loser, chrome_variations::kTestValueB); | |
| 183 | |
| 184 EXPECT_NE(loser_group, trial_false->group()); | |
| 185 EXPECT_EQ(chrome_variations::kTestValueA, GetIDForTrial(trial_false.get())); | |
| 186 } | |
| 187 | |
| 188 // Test that not associating a FieldTrial with any IDs ensure that the empty ID | |
| 189 // will be returned. | |
| 190 TEST_F(VariationsHelperTest, NoAssociation) { | |
| 191 const std::string default_name = "default"; | |
| 192 scoped_refptr<base::FieldTrial> no_id_trial( | |
| 193 base::FieldTrialList::FactoryGetFieldTrial("d3", 10, default_name, | |
| 194 next_year_, 12, 31, NULL)); | |
| 195 const std::string winner = "TheWinner"; | |
| 196 int winner_group = no_id_trial->AppendGroup(winner, 10); | |
| 197 | |
| 198 // Ensure that despite the fact that a normal winner is elected, it does not | |
| 199 // have a valid chrome_variations::VariationID associated with it. | |
| 200 EXPECT_EQ(winner_group, no_id_trial->group()); | |
| 201 EXPECT_EQ(winner, no_id_trial->group_name()); | |
| 202 EXPECT_EQ(chrome_variations::kEmptyID, GetIDForTrial(no_id_trial.get())); | |
| 203 } | |
| 204 | |
| 205 // Ensure that the AssociateGoogleVariationIDForce works as expected. | |
| 206 TEST_F(VariationsHelperTest, ForceAssociation) { | |
| 207 EXPECT_EQ(chrome_variations::kEmptyID, | |
| 208 GetGoogleVariationID("trial", "group")); | |
| 209 AssociateGoogleVariationID("trial", "group", | |
| 210 chrome_variations::kTestValueA); | |
| 211 EXPECT_EQ(chrome_variations::kTestValueA, | |
| 212 GetGoogleVariationID("trial", "group")); | |
| 213 AssociateGoogleVariationID("trial", "group", chrome_variations::kTestValueB); | |
| 214 EXPECT_EQ(chrome_variations::kTestValueA, | |
| 215 GetGoogleVariationID("trial", "group")); | |
| 216 AssociateGoogleVariationIDForce("trial", "group", | |
| 217 chrome_variations::kTestValueB); | |
| 218 EXPECT_EQ(chrome_variations::kTestValueB, | |
| 219 GetGoogleVariationID("trial", "group")); | |
| 220 } | |
| 221 | |
| 222 TEST_F(VariationsHelperTest, GenerateExperimentChunks) { | |
| 223 const char* kExperimentStrings[] = { | |
| 224 "1d3048f1-9de009d0", | |
| 225 "cd73da34-cf196cb", | |
| 226 "6214fa18-9e6dc24d", | |
| 227 "4dcb0cd6-d31c4ca1", | |
| 228 "9d5bce6-30d7d8ac", | |
| 229 }; | |
| 230 const char* kExpectedChunks1[] = { | |
| 231 "1d3048f1-9de009d0", | |
| 232 }; | |
| 233 const char* kExpectedChunks2[] = { | |
| 234 "1d3048f1-9de009d0,cd73da34-cf196cb", | |
| 235 }; | |
| 236 const char* kExpectedChunks3[] = { | |
| 237 "1d3048f1-9de009d0,cd73da34-cf196cb,6214fa18-9e6dc24d", | |
| 238 }; | |
| 239 const char* kExpectedChunks4[] = { | |
| 240 "1d3048f1-9de009d0,cd73da34-cf196cb,6214fa18-9e6dc24d", | |
| 241 "4dcb0cd6-d31c4ca1", | |
| 242 }; | |
| 243 const char* kExpectedChunks5[] = { | |
| 244 "1d3048f1-9de009d0,cd73da34-cf196cb,6214fa18-9e6dc24d", | |
| 245 "4dcb0cd6-d31c4ca1,9d5bce6-30d7d8ac", | |
| 246 }; | |
| 247 | |
| 248 struct { | |
| 249 size_t strings_length; | |
| 250 size_t expected_chunks_length; | |
| 251 const char** expected_chunks; | |
| 252 } cases[] = { | |
| 253 { 0, 0, NULL }, | |
| 254 { 1, arraysize(kExpectedChunks1), kExpectedChunks1 }, | |
| 255 { 2, arraysize(kExpectedChunks2), kExpectedChunks2 }, | |
| 256 { 3, arraysize(kExpectedChunks3), kExpectedChunks3 }, | |
| 257 { 4, arraysize(kExpectedChunks4), kExpectedChunks4 }, | |
| 258 { 5, arraysize(kExpectedChunks5), kExpectedChunks5 }, | |
| 259 }; | |
| 260 | |
| 261 for (size_t i = 0; i < ARRAYSIZE_UNSAFE(cases); ++i) { | |
| 262 ASSERT_LE(cases[i].strings_length, arraysize(kExperimentStrings)); | |
| 263 | |
| 264 std::vector<string16> experiments; | |
| 265 for (size_t j = 0; j < cases[i].strings_length; ++j) | |
| 266 experiments.push_back(UTF8ToUTF16(kExperimentStrings[j])); | |
| 267 | |
| 268 std::vector<string16> chunks; | |
| 269 GenerateVariationChunks(experiments, &chunks); | |
| 270 ASSERT_EQ(cases[i].expected_chunks_length, chunks.size()); | |
| 271 for (size_t j = 0; j < chunks.size(); ++j) | |
| 272 EXPECT_EQ(UTF8ToUTF16(cases[i].expected_chunks[j]), chunks[j]); | |
| 273 } | |
| 274 } | |
| 275 | |
| 276 } // namespace chrome_variations | |
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Chromium Code Reviews
Issue 10828314:
Move Variations stuff into variations/ directories and add OWNERS files for the variations client t… (Closed)
Base URL: svn://svn.chromium.org/chrome/trunk/src/