More fine-grained pruning in safe browsing incident reporting service.

chrome/browser/safe_browsing/tracked_preference_incident_handlers_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 "chrome/browser/safe_browsing/tracked_preference_incident_handlers.h"
+
+#include "base/memory/scoped_ptr.h"
+#include "chrome/common/safe_browsing/csd.pb.h"
+#include "testing/gtest/include/gtest/gtest.h"
+
+namespace {
+
+scoped_ptr<safe_browsing::ClientIncidentReport_IncidentData> MakeIncident() {
+  scoped_ptr<safe_browsing::ClientIncidentReport_IncidentData> incident(
+      new safe_browsing::ClientIncidentReport_IncidentData);
+
+  incident->mutable_tracked_preference()->set_path("foo");
+  incident->mutable_tracked_preference()->set_atomic_value("bar");
+  incident->mutable_tracked_preference()->set_value_state(
+      safe_browsing::
+          ClientIncidentReport_IncidentData_TrackedPreferenceIncident_ValueState_CLEARED);
+  return incident.Pass();
+}
+
+}  // namespace
+
+// Tests that GetKey returns the preference path.
+TEST(GetTrackedPreferenceIncidentKey, KeyIsPath) {
+  safe_browsing::ClientIncidentReport_IncidentData incident;
+
+  incident.mutable_tracked_preference()->set_path("foo");
+  ASSERT_EQ(std::string("foo"),
+            safe_browsing::GetTrackedPreferenceIncidentKey(incident));
+}
+
+// Tests that GetDigest returns the same value for the same incident.
+TEST(GetTrackedPreferenceIncidentDigest, SameIncidentSameDigest) {
+  scoped_ptr<safe_browsing::ClientIncidentReport_IncidentData> incident(
+      MakeIncident());
+
+  uint32_t digest =
+      safe_browsing::GetTrackedPreferenceIncidentDigest(*incident);
+  ASSERT_EQ(digest,
+            safe_browsing::GetTrackedPreferenceIncidentDigest(*MakeIncident()));
+}
+
+// Tests that GetDigest returns the same value for the same incident.
+TEST(GetTrackedPreferenceIncidentDigest, DifferentIncidentDifferentDigest) {
+  scoped_ptr<safe_browsing::ClientIncidentReport_IncidentData> incident(
+      MakeIncident());
+
+  uint32_t digest =
+      safe_browsing::GetTrackedPreferenceIncidentDigest(*incident);
+
+  scoped_ptr<safe_browsing::ClientIncidentReport_IncidentData> incident2(
+      MakeIncident());
+  incident2->mutable_tracked_preference()->set_value_state(
+      safe_browsing::
+          ClientIncidentReport_IncidentData_TrackedPreferenceIncident_ValueState_WEAK_LEGACY);
+
+  ASSERT_NE(digest,
+            safe_browsing::GetTrackedPreferenceIncidentDigest(*incident2));
+}