RAPPOR implementation

components/rappor/rappor_service_unittest.cc

+// Copyright (c) 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 "components/rappor/rappor_service.h"
+
+#include <string>
+
+#include "components/rappor/rappor_recorder.h"
+#include "testing/gtest/include/gtest/gtest.h"
+
+namespace rappor {
+
+const RapporParameters kTestRapporParameters = {

[Alexei Svitkine (slow), 2013/12/19 19:47:02]

Nit: Inline this into the test function, unless this is going to be used by
multiple tests..

[Steven Holte, 2013/12/20 03:03:55]

Done.

+    "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 */
+};
+
+class RapporServiceTest : public testing::Test {
+ public:
+  RapporMetricsProto* GetProto(RapporService* log) {
+    return &(log->rappor_metrics_proto_);
+  }
+  void RecordRapporMetrics(RapporService* log) { log->RecordRapporMetrics(); }
+};
+
+TEST_F(RapporServiceTest, RapporMetrics) {
+  RapporService log;
+  std::vector<std::string> samples;
+  samples.push_back("foo");
+  RAPPOR_SAMPLES(&kTestRapporParameters, samples);
+
+  RecordRapporMetrics(&log);
+
+  RapporMetricsProto* proto = GetProto(&log);
+  EXPECT_EQ(1, proto->rappor_size());
+
+  const RapporMetricsProto::RapporMetric& rappor_proto = proto->rappor(0);
+  EXPECT_TRUE(rappor_proto.name_hash());
+  EXPECT_EQ(16u, rappor_proto.bits().size());
+}
+
+}  // namespace rappor