Add TrackedPreferenceValidationDelegate

chrome/browser/prefs/mock_validation_delegate.h

+// 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.
+
+#ifndef CHROME_BROWSER_PREFS_MOCK_VALIDATION_DELEGATE_H_
+#define CHROME_BROWSER_PREFS_MOCK_VALIDATION_DELEGATE_H_
+
+#include <string>
+#include <vector>
+
+#include "base/compiler_specific.h"
+#include "base/macros.h"
+#include "chrome/browser/prefs/pref_hash_filter.h"
+#include "chrome/browser/prefs/pref_hash_store_transaction.h"
+#include "chrome/browser/prefs/tracked/tracked_preference_helper.h"
+#include "chrome/browser/prefs/tracked/tracked_preference_validation_delegate.h"
+
+// A mock tracked preference validation delegate for use by tests.
+class MockValidationDelegate : public TrackedPreferenceValidationDelegate {
+ public:
+  struct ValidationEvent {
+    ValidationEvent(const std::string& path,
+                    PrefHashStoreTransaction::ValueState state,
+                    TrackedPreferenceHelper::ResetAction action,
+                    PrefHashFilter::PrefTrackingStrategy tracking_strategy)
+        : pref_path(path),
+          value_state(state),
+          reset_action(action),
+          strategy(tracking_strategy) {}
+
+    std::string pref_path;
+    PrefHashStoreTransaction::ValueState value_state;
+    TrackedPreferenceHelper::ResetAction reset_action;
+    PrefHashFilter::PrefTrackingStrategy strategy;
+  };
+
+  MockValidationDelegate();
+  virtual ~MockValidationDelegate();
+
+  // Returns the number of recorded validations.
+  size_t recorded_validations_count() const { return validations_.size(); }
+
+  // Returns the number of validations of a given value state.
+  size_t CountValidationsOfState(
+      PrefHashStoreTransaction::ValueState value_state) const;
+
+  // Returns the event for the preference with a given path.
+  const ValidationEvent* GetEventForPath(const std::string& pref_path) const;
+
+  // TrackedPreferenceValidationDelegate implementation.
+  virtual void OnAtomicPreferenceValidation(
+      const std::string& pref_path,
+      const base::Value* value,
+      PrefHashStoreTransaction::ValueState value_state,
+      TrackedPreferenceHelper::ResetAction reset_action) OVERRIDE;
+  virtual void OnSplitPreferenceValidation(
+      const std::string& pref_path,
+      const base::DictionaryValue* dict_value,
+      const std::vector<std::string>& invalid_keys,
+      PrefHashStoreTransaction::ValueState value_state,
+      TrackedPreferenceHelper::ResetAction reset_action) OVERRIDE;
+
+ private:
+  // Adds a new validation event.
+  void RecordValidation(const std::string& pref_path,
+                        PrefHashStoreTransaction::ValueState value_state,
+                        TrackedPreferenceHelper::ResetAction reset_action,
+                        PrefHashFilter::PrefTrackingStrategy strategy);
+
+  std::vector<ValidationEvent> validations_;
+
+  DISALLOW_COPY_AND_ASSIGN(MockValidationDelegate);
+};
+
+#endif  // CHROME_BROWSER_PREFS_MOCK_VALIDATION_DELEGATE_H_