Move chrome/common/metrics/variations to chrome/common/variations.

chrome/common/metrics/variations/experiment_labels_unittest.cc

-// Copyright 2013 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 "chrome/common/metrics/variations/experiment_labels.h"
-
-#include <set>
-#include <string>
-#include <vector>
-
-#include "base/basictypes.h"
-#include "base/metrics/field_trial.h"
-#include "base/strings/string_split.h"
-#include "base/strings/utf_string_conversions.h"
-#include "components/variations/variations_associated_data.h"
-#include "testing/gtest/include/gtest/gtest.h"
-
-namespace chrome_variations {
-
-TEST(ExperimentLabelsTest, BuildGoogleUpdateExperimentLabel) {
-  const VariationID TEST_VALUE_A = 3300200;
-  const VariationID TEST_VALUE_B = 3300201;
-  const VariationID TEST_VALUE_C = 3300202;
-  const VariationID TEST_VALUE_D = 3300203;
-
-  struct {
-    const char* active_group_pairs;
-    const char* expected_ids;
-  } test_cases[] = {
-    // Empty group.
-    {"", ""},
-    // Group of 1.
-    {"FieldTrialA#Default", "3300200"},
-    // Group of 1, doesn't have an associated ID.
-    {"FieldTrialA#DoesNotExist", ""},
-    // Group of 3.
-    {"FieldTrialA#Default#FieldTrialB#Group1#FieldTrialC#Default",
-     "3300200#3300201#3300202"},
-    // Group of 3, one doesn't have an associated ID.
-    {"FieldTrialA#Default#FieldTrialB#DoesNotExist#FieldTrialC#Default",
-     "3300200#3300202"},
-    // Group of 3, all three don't have an associated ID.
-    {"FieldTrialX#Default#FieldTrialB#DoesNotExist#FieldTrialC#Default",
-     "3300202"},
-  };
-
-  // Register a few VariationIDs.
-  AssociateGoogleVariationID(GOOGLE_UPDATE_SERVICE, "FieldTrialA", "Default",
-                             TEST_VALUE_A);
-  AssociateGoogleVariationID(GOOGLE_UPDATE_SERVICE, "FieldTrialB", "Group1",
-                             TEST_VALUE_B);
-  AssociateGoogleVariationID(GOOGLE_UPDATE_SERVICE, "FieldTrialC", "Default",
-                             TEST_VALUE_C);
-  AssociateGoogleVariationID(GOOGLE_UPDATE_SERVICE, "FieldTrialD", "Default",
-                             TEST_VALUE_D);  // Not actually used.
-
-  for (size_t i = 0; i < ARRAYSIZE_UNSAFE(test_cases); ++i) {
-    // Parse the input groups.
-    base::FieldTrial::ActiveGroups groups;
-    std::vector<std::string> group_data;
-    base::SplitString(test_cases[i].active_group_pairs, '#', &group_data);
-    ASSERT_EQ(0U, group_data.size() % 2);
-    for (size_t j = 0; j < group_data.size(); j += 2) {
-      base::FieldTrial::ActiveGroup group;
-      group.trial_name = group_data[j];
-      group.group_name = group_data[j + 1];
-      groups.push_back(group);
-    }
-
-    // Parse the expected output.
-    std::vector<std::string> expected_ids_list;
-    base::SplitString(test_cases[i].expected_ids, '#', &expected_ids_list);
-
-    std::string experiment_labels_string = base::UTF16ToUTF8(
-        BuildGoogleUpdateExperimentLabel(groups));
-
-    // Split the VariationIDs from the labels for verification below.
-    std::vector<std::string> split_labels;
-    std::set<std::string> parsed_ids;
-    base::SplitString(experiment_labels_string, ';', &split_labels);
-    for (std::vector<std::string>::const_iterator it = split_labels.begin();
-         it != split_labels.end(); ++it) {
-      // The ID is precisely between the '=' and '|' characters in each label.
-      size_t index_of_equals = it->find('=');
-      size_t index_of_pipe = it->find('|');
-      ASSERT_NE(std::string::npos, index_of_equals);
-      ASSERT_NE(std::string::npos, index_of_pipe);
-      ASSERT_GT(index_of_pipe, index_of_equals);
-      parsed_ids.insert(it->substr(index_of_equals + 1,
-                                   index_of_pipe - index_of_equals - 1));
-    }
-
-    // Verify that the resulting string contains each of the expected labels,
-    // and nothing more. Note that the date is stripped out and ignored.
-    for (std::vector<std::string>::const_iterator it =
-             expected_ids_list.begin(); it != expected_ids_list.end(); ++it) {
-      std::set<std::string>::iterator it2 = parsed_ids.find(*it);
-      EXPECT_TRUE(parsed_ids.end() != it2);
-      parsed_ids.erase(it2);
-    }
-    EXPECT_TRUE(parsed_ids.empty());
-  }  // for
-}
-
-TEST(ExperimentLabelsTest, CombineExperimentLabels) {
-  struct {
-    const char* variations_labels;
-    const char* other_labels;
-    const char* expected_label;
-  } test_cases[] = {
-    {"A=B|Tue, 21 Jan 2014 15:30:21 GMT",
-     "C=D|Tue, 21 Jan 2014 15:30:21 GMT",
-     "C=D|Tue, 21 Jan 2014 15:30:21 GMT;A=B|Tue, 21 Jan 2014 15:30:21 GMT"},
-    {"A=B|Tue, 21 Jan 2014 15:30:21 GMT",
-     "",
-     "A=B|Tue, 21 Jan 2014 15:30:21 GMT"},
-    {"",
-     "A=B|Tue, 21 Jan 2014 15:30:21 GMT",
-     "A=B|Tue, 21 Jan 2014 15:30:21 GMT"},
-    {"A=B|Tue, 21 Jan 2014 15:30:21 GMT;C=D|Tue, 21 Jan 2014 15:30:21 GMT",
-     "P=Q|Tue, 21 Jan 2014 15:30:21 GMT;X=Y|Tue, 21 Jan 2014 15:30:21 GMT",
-     "P=Q|Tue, 21 Jan 2014 15:30:21 GMT;X=Y|Tue, 21 Jan 2014 15:30:21 GMT;"
-     "A=B|Tue, 21 Jan 2014 15:30:21 GMT;C=D|Tue, 21 Jan 2014 15:30:21 GMT"},
-    {"",
-     "",
-     ""},
-  };
-
-  for (size_t i = 0; i < ARRAYSIZE_UNSAFE(test_cases); ++i) {
-    std::string result = base::UTF16ToUTF8(CombineExperimentLabels(
-        base::ASCIIToUTF16(test_cases[i].variations_labels),
-        base::ASCIIToUTF16(test_cases[i].other_labels)));
-    EXPECT_EQ(test_cases[i].expected_label, result);
-  }
-}
-
-TEST(ExperimentLabelsTest, ExtractNonVariationLabels) {
-  struct {
-    const char* input_label;
-    const char* expected_output;
-  } test_cases[] = {
-    // Empty
-    {"", ""},
-    // One
-    {"gcapi_brand=123|Tue, 21 Jan 2014 15:30:21 GMT",
-     "gcapi_brand=123|Tue, 21 Jan 2014 15:30:21 GMT"},
-    // Three
-    {"CrVar1=123|Tue, 21 Jan 2014 15:30:21 GMT;"
-     "experiment1=456|Tue, 21 Jan 2014 15:30:21 GMT;"
-     "experiment2=789|Tue, 21 Jan 2014 15:30:21 GMT;"
-     "CrVar1=123|Tue, 21 Jan 2014 15:30:21 GMT",
-     "experiment1=456|Tue, 21 Jan 2014 15:30:21 GMT;"
-     "experiment2=789|Tue, 21 Jan 2014 15:30:21 GMT"},
-    // One and one Variation
-    {"gcapi_brand=123|Tue, 21 Jan 2014 15:30:21 GMT;"
-     "CrVar1=3310002|Tue, 21 Jan 2014 15:30:21 GMT",
-     "gcapi_brand=123|Tue, 21 Jan 2014 15:30:21 GMT"},
-    // One and one Variation, flipped
-    {"CrVar1=3310002|Tue, 21 Jan 2014 15:30:21 GMT;"
-     "gcapi_brand=123|Tue, 21 Jan 2014 15:30:21 GMT",
-     "gcapi_brand=123|Tue, 21 Jan 2014 15:30:21 GMT"},
-    // Sandwiched
-    {"CrVar1=3310002|Tue, 21 Jan 2014 15:30:21 GMT;"
-     "gcapi_brand=123|Tue, 21 Jan 2014 15:30:21 GMT;"
-     "CrVar2=3310003|Tue, 21 Jan 2014 15:30:21 GMT;"
-     "CrVar3=3310004|Tue, 21 Jan 2014 15:30:21 GMT",
-     "gcapi_brand=123|Tue, 21 Jan 2014 15:30:21 GMT"},
-    // Only Variations
-    {"CrVar1=3310002|Tue, 21 Jan 2014 15:30:21 GMT;"
-     "CrVar2=3310003|Tue, 21 Jan 2014 15:30:21 GMT;"
-     "CrVar3=3310004|Tue, 21 Jan 2014 15:30:21 GMT",
-     ""},
-    // Empty values
-    {"gcapi_brand=123|Tue, 21 Jan 2014 15:30:21 GMT;"
-     "CrVar1=3310002|Tue, 21 Jan 2014 15:30:21 GMT",
-     "gcapi_brand=123|Tue, 21 Jan 2014 15:30:21 GMT"},
-    // Trailing semicolon
-    {"gcapi_brand=123|Tue, 21 Jan 2014 15:30:21 GMT;"
-     "CrVar1=3310002|Tue, 21 Jan 2014 15:30:21 GMT;",  // Note the semi here.
-     "gcapi_brand=123|Tue, 21 Jan 2014 15:30:21 GMT"},
-    // Semis
-    {";;;;", ""},
-  };
-
-  for (size_t i = 0; i < ARRAYSIZE_UNSAFE(test_cases); ++i) {
-    std::string non_variation_labels = base::UTF16ToUTF8(
-        ExtractNonVariationLabels(
-            base::ASCIIToUTF16(test_cases[i].input_label)));
-    EXPECT_EQ(test_cases[i].expected_output, non_variation_labels);
-  }
-}
-
-}  // namespace chrome_variations