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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 #include <vector>
      6 
      7 #include "base/strings/stringprintf.h"
      8 #include "breakpad/src/client/windows/common/ipc_protocol.h"
      9 #include "chrome/app/breakpad_field_trial_win.h"
     10 #include "chrome/app/breakpad_win.h"
     11 #include "chrome/common/child_process_logging.h"
     12 #include "chrome/common/metrics/variations/variations_util.h"
     13 #include "testing/gtest/include/gtest/gtest.h"
     14 
     15 using breakpad_win::g_custom_entries;
     16 using breakpad_win::g_experiment_chunks_offset;
     17 using breakpad_win::g_num_of_experiments_offset;
     18 
     19 class ChromeAppBreakpadTest : public testing::Test {
     20  public:
     21   ChromeAppBreakpadTest() {
     22     testing::InitCustomInfoEntries();
     23   }
     24 
     25  protected:
     26   typedef std::vector<string16> Experiments;
     27   void ValidateExperimentChunks(const Experiments& experiments) {
     28     std::vector<string16> chunks;
     29     chrome_variations::GenerateVariationChunks(experiments, &chunks);
     30     testing::SetExperimentChunks(chunks, experiments.size());
     31     EXPECT_STREQ(base::StringPrintf(L"%d", experiments.size()).c_str(),
     32                  (*g_custom_entries)[g_num_of_experiments_offset].value);
     33     // We make a copy of the array that we empty as we find the experiments.
     34     Experiments experiments_left(experiments);
     35     for (int i = 0; i < kMaxReportedVariationChunks; ++i) {
     36       const google_breakpad::CustomInfoEntry& entry =
     37           (*g_custom_entries)[g_experiment_chunks_offset + i];
     38       EXPECT_STREQ(base::StringPrintf(L"experiment-chunk-%i", i + 1).c_str(),
     39                    entry.name);
     40       // An empty value should only appear when |experiments_left| is empty.
     41       if (wcslen(entry.value) == 0)
     42         EXPECT_TRUE(experiments_left.empty());
     43       if (experiments_left.empty()) {
     44         // All other slots should be empty.
     45         EXPECT_STREQ(L"", entry.value);
     46       } else {
     47         // We can't guarantee the order, so we must search for them all.
     48         Experiments::const_iterator experiment = experiments_left.begin();
     49         while (experiment != experiments_left.end()) {
     50           if (wcsstr(entry.value, experiment->c_str())) {
     51             experiment = experiments_left.erase(experiment);
     52           } else {
     53             ++experiment;
     54           }
     55         }
     56       }
     57     }
     58     EXPECT_TRUE(experiments_left.empty());
     59   }
     60 
     61  private:
     62   static const wchar_t* kNumExperiments;
     63   static const size_t kNumExperimentsSize;
     64 };
     65 
     66 const wchar_t* ChromeAppBreakpadTest::kNumExperiments = L"num-experiments";
     67 const size_t ChromeAppBreakpadTest::kNumExperimentsSize =
     68     wcslen(ChromeAppBreakpadTest::kNumExperiments);
     69 
     70 TEST_F(ChromeAppBreakpadTest, ExperimentList) {
     71   Experiments experiments;
     72   experiments.push_back(L"ABCDE-12345");
     73   ValidateExperimentChunks(experiments);
     74 
     75   experiments.push_back(L"There-You Are");
     76   ValidateExperimentChunks(experiments);
     77 
     78   experiments.push_back(L"Peter-Sellers");
     79   ValidateExperimentChunks(experiments);
     80 
     81   experiments.push_back(L"Eat me-Drink me");
     82   ValidateExperimentChunks(experiments);
     83 }
     84