components/rappor/rappor_service_unittest.cc

   1 // Copyright 2014 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 "components/rappor/rappor_service.h"
   6
   7 #include "testing/gtest/include/gtest/gtest.h"
   8
   9 namespace rappor {
  10
  11 class TestRapporService : public RapporService {
  12  public:
  13   void GetReports(RapporReports* reports) {
  14     ExportMetrics(reports);
  15   }
  16   void TestRecordSample(const std::string& metric_name,
  17                         const RapporParameters& parameters,
  18                         const std::string& sample) {
  19     RecordSampleInternal(metric_name, parameters, sample);
  20   }
  21 };
  22
  23 TEST(RapporServiceTest, RecordAndExportMetrics) {
  24   const RapporParameters kTestRapporParameters = {
  25       16 /* Bloom filter size bytes */,
  26       4 /* Bloom filter hash count */,
  27       PROBABILITY_75 /* Fake data probability */,
  28       PROBABILITY_50 /* Fake one probability */,
  29       PROBABILITY_75 /* One coin probability */,
  30       PROBABILITY_50 /* Zero coin probability */
  31   };
  32
  33   TestRapporService rappor_service;
  34   rappor_service.SetCohortForTesting(0);
  35   rappor_service.SetSecretForTesting(
  36       HmacByteVectorGenerator::GenerateEntropyInput());
  37
  38   rappor_service.TestRecordSample("MyMetric", kTestRapporParameters, "foo");
  39   rappor_service.TestRecordSample("MyMetric", kTestRapporParameters, "bar");
  40
  41   RapporReports reports;
  42   rappor_service.GetReports(&reports);
  43   EXPECT_EQ(1, reports.report_size());
  44
  45   const RapporReports::Report& report = reports.report(0);
  46   EXPECT_TRUE(report.name_hash());
  47   EXPECT_EQ(16u, report.bits().size());
  48 }
  49
  50 }  // namespace rappor