Filtered events.

chrome/common/extensions/value_counter_unittest.cc

+// Copyright (c) 2012 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 "base/memory/scoped_ptr.h"
+#include "base/values.h"
+#include "chrome/common/extensions/value_counter.h"
+#include "testing/gtest/include/gtest/gtest.h"
+
+class ValueCounterUnittest : public testing::Test {
+};
+
+TEST_F(ValueCounterUnittest, TestAddingSameValue) {
+  extensions::ValueCounter vc;
+  base::ListValue value;
+  ASSERT_EQ(1, vc.Add(value));
+  ASSERT_EQ(2, vc.Add(value));
+}
+
+TEST_F(ValueCounterUnittest, TestAddingDifferentValue) {
+  extensions::ValueCounter vc;
+  base::ListValue value1;
+  base::DictionaryValue value2;
+  ASSERT_EQ(1, vc.Add(value1));
+  ASSERT_EQ(1, vc.Add(value2));
+}
+
+TEST_F(ValueCounterUnittest, TestRemovingValue) {
+  extensions::ValueCounter vc;
+  base::ListValue value;
+  ASSERT_EQ(1, vc.Add(value));
+  ASSERT_EQ(2, vc.Add(value));
+  ASSERT_EQ(1, vc.Remove(value));
+  ASSERT_EQ(0, vc.Remove(value));
+}
+
+TEST_F(ValueCounterUnittest, TestAddIfMissing) {
+  extensions::ValueCounter vc;
+  base::ListValue value;
+  ASSERT_EQ(1, vc.AddIfMissing(value));
+  ASSERT_EQ(1, vc.AddIfMissing(value));
+}