RAPPOR implementation

components/rappor/rappor_service_unittest.cc

+// Copyright 2014 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 "components/rappor/rappor_service.h"
+
+#include <string>
+
+#include "testing/gtest/include/gtest/gtest.h"
+
+namespace rappor {
+
+class TestRapporService : public RapporService {
+ public:
+  void GetReports(RapporReports* reports) {
+    LogMetrics(reports);
+  }
+  void TestRecordSamples(const RapporParameters& parameters,
+                         const std::vector<std::string>& samples) {
+    RecordSamplesInternal(parameters, samples);
+  }
+};
+
+TEST(RapporServiceTest, RapporMetrics) {
+  const RapporParameters kTestRapporParameters = {
+      "MyRappor", 16 /* Bloom filter size bytes */,
+      4 /* Bloom filter hash count */,
+      PROBABILITY_75 /* Fake data probability */,
+      PROBABILITY_50 /* Fake one probability */,
+      PROBABILITY_75 /* One coin probability */,
+      PROBABILITY_50 /* Zero coin probability */
+  };
+
+  TestRapporService rappor_service;
+  std::vector<std::string> samples;
+  samples.push_back("foo");
+  rappor_service.TestRecordSamples(kTestRapporParameters, samples);
+  std::vector<std::string> samples2;
+  samples2.push_back("bar");
+  rappor_service.TestRecordSamples(kTestRapporParameters, samples2);
+
+  RapporReports reports;
+  rappor_service.GetReports(&reports);
+  EXPECT_EQ(1, reports.report_size());
+
+  const RapporReports::Report& report = reports.report(0);
+  EXPECT_TRUE(report.name_hash());
+  EXPECT_EQ(16u, report.bits().size());
+}
+
+}  // namespace rappor