Move deduping_factory files.

chrome/browser/extensions/api/declarative/deduping_factory_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 "chrome/browser/extensions/api/declarative/deduping_factory.h"
-
-#include "base/values.h"
-#include "testing/gtest/include/gtest/gtest.h"
-
-namespace {
-
-const char kTypeName[] = "Foo";
-const char kTypeName2[] = "Foo2";
-
-// This serves as an example how to use the DedupingFactory.
-class BaseClass : public base::RefCounted<BaseClass> {
- public:
-  // The type is introduced so that we can compare derived classes even though
-  // Equals takes a parameter of type BaseClass. Each derived class gets an
-  // entry in Type.
-  enum Type { FOO };
-
-  explicit BaseClass(Type type) : type_(type) {}
-
-  Type type() const { return type_; }
-
-  // For BaseClassT template:
-  virtual bool Equals(const BaseClass* other) const = 0;
-
- protected:
-  friend class base::RefCounted<BaseClass>;
-  virtual ~BaseClass() {}
-
- private:
-  const Type type_;
-};
-
-class Foo : public BaseClass {
- public:
-  explicit Foo(int parameter) : BaseClass(FOO), parameter_(parameter) {}
-  virtual bool Equals(const BaseClass* other) const OVERRIDE {
-    return other->type() == type() &&
-           static_cast<const Foo*>(other)->parameter_ == parameter_;
-  }
-  int parameter() const {
-    return parameter_;
-  }
-
- private:
-  friend class base::RefCounted<BaseClass>;
-  virtual ~Foo() {}
-
-  // Note that this class must be immutable.
-  const int parameter_;
-  DISALLOW_COPY_AND_ASSIGN(Foo);
-};
-
-scoped_refptr<const BaseClass> CreateFoo(const std::string& /*instance_type*/,
-                                         const base::Value* value,
-                                         std::string* error,
-                                         bool* bad_message) {
-  const base::DictionaryValue* dict = NULL;
-  CHECK(value->GetAsDictionary(&dict));
-  int parameter = 0;
-  if (!dict->GetInteger("parameter", &parameter)) {
-    *error = "No parameter";
-    *bad_message = true;
-    return scoped_refptr<const BaseClass>(NULL);
-  }
-  return scoped_refptr<const BaseClass>(new Foo(parameter));
-}
-
-scoped_ptr<base::DictionaryValue> CreateDictWithParameter(int parameter) {
-  scoped_ptr<base::DictionaryValue> dict(new base::DictionaryValue);
-  dict->SetInteger("parameter", parameter);
-  return dict.Pass();
-}
-
-}  // namespace
-
-namespace extensions {
-
-TEST(DedupingFactoryTest, InstantiationParameterized) {
-  DedupingFactory<BaseClass> factory(2);
-  factory.RegisterFactoryMethod(
-      kTypeName, DedupingFactory<BaseClass>::IS_PARAMETERIZED, &CreateFoo);
-
-  scoped_ptr<base::DictionaryValue> d1(CreateDictWithParameter(1));
-  scoped_ptr<base::DictionaryValue> d2(CreateDictWithParameter(2));
-  scoped_ptr<base::DictionaryValue> d3(CreateDictWithParameter(3));
-  scoped_ptr<base::DictionaryValue> d4(CreateDictWithParameter(4));
-
-  std::string error;
-  bool bad_message = false;
-
-  // Fill factory with 2 different types.
-  scoped_refptr<const BaseClass> c1(
-      factory.Instantiate(kTypeName, d1.get(), &error, &bad_message));
-  scoped_refptr<const BaseClass> c2(
-      factory.Instantiate(kTypeName, d2.get(), &error, &bad_message));
-  ASSERT_TRUE(c1.get());
-  ASSERT_TRUE(c2.get());
-  EXPECT_EQ(1, static_cast<const Foo*>(c1.get())->parameter());
-  EXPECT_EQ(2, static_cast<const Foo*>(c2.get())->parameter());
-
-  // This one produces an overflow, now the cache contains [2, 3]
-  scoped_refptr<const BaseClass> c3(
-      factory.Instantiate(kTypeName, d3.get(), &error, &bad_message));
-  ASSERT_TRUE(c3.get());
-  EXPECT_EQ(3, static_cast<const Foo*>(c3.get())->parameter());
-
-  // Reuse 2, this should give the same instance as c2.
-  scoped_refptr<const BaseClass> c2_b(
-      factory.Instantiate(kTypeName, d2.get(), &error, &bad_message));
-  EXPECT_EQ(2, static_cast<const Foo*>(c2_b.get())->parameter());
-  EXPECT_EQ(c2, c2_b);
-
-  // Also check that the reuse of 2 moved it to the end, so that the cache is
-  // now [3, 2] and 3 is discarded before 2.
-  // This discards 3, so the cache becomes [2, 1]
-  scoped_refptr<const BaseClass> c1_b(
-      factory.Instantiate(kTypeName, d1.get(), &error, &bad_message));
-
-  scoped_refptr<const BaseClass> c2_c(
-      factory.Instantiate(kTypeName, d2.get(), &error, &bad_message));
-  EXPECT_EQ(2, static_cast<const Foo*>(c2_c.get())->parameter());
-  EXPECT_EQ(c2, c2_c);
-}
-
-TEST(DedupingFactoryTest, InstantiationNonParameterized) {
-  DedupingFactory<BaseClass> factory(2);
-  factory.RegisterFactoryMethod(
-      kTypeName, DedupingFactory<BaseClass>::IS_NOT_PARAMETERIZED, &CreateFoo);
-
-  scoped_ptr<base::DictionaryValue> d1(CreateDictWithParameter(1));
-  scoped_ptr<base::DictionaryValue> d2(CreateDictWithParameter(2));
-
-  std::string error;
-  bool bad_message = false;
-
-  // We create two instances with different dictionaries but because the type is
-  // declared to be not parameterized, we should get the same instance.
-  scoped_refptr<const BaseClass> c1(
-      factory.Instantiate(kTypeName, d1.get(), &error, &bad_message));
-  scoped_refptr<const BaseClass> c2(
-      factory.Instantiate(kTypeName, d2.get(), &error, &bad_message));
-  ASSERT_TRUE(c1.get());
-  ASSERT_TRUE(c2.get());
-  EXPECT_EQ(1, static_cast<const Foo*>(c1.get())->parameter());
-  EXPECT_EQ(1, static_cast<const Foo*>(c2.get())->parameter());
-  EXPECT_EQ(c1, c2);
-}
-
-TEST(DedupingFactoryTest, TypeNames) {
-  DedupingFactory<BaseClass> factory(2);
-  factory.RegisterFactoryMethod(
-      kTypeName, DedupingFactory<BaseClass>::IS_PARAMETERIZED, &CreateFoo);
-  factory.RegisterFactoryMethod(
-      kTypeName2, DedupingFactory<BaseClass>::IS_PARAMETERIZED, &CreateFoo);
-
-  scoped_ptr<base::DictionaryValue> d1(CreateDictWithParameter(1));
-
-  std::string error;
-  bool bad_message = false;
-
-  scoped_refptr<const BaseClass> c1_a(
-      factory.Instantiate(kTypeName, d1.get(), &error, &bad_message));
-  scoped_refptr<const BaseClass> c1_b(
-      factory.Instantiate(kTypeName2, d1.get(), &error, &bad_message));
-
-  ASSERT_TRUE(c1_a.get());
-  ASSERT_TRUE(c1_b.get());
-  EXPECT_NE(c1_a, c1_b);
-}
-
-TEST(DedupingFactoryTest, Clear) {
-  DedupingFactory<BaseClass> factory(2);
-  factory.RegisterFactoryMethod(
-      kTypeName, DedupingFactory<BaseClass>::IS_PARAMETERIZED, &CreateFoo);
-
-  scoped_ptr<base::DictionaryValue> d1(CreateDictWithParameter(1));
-
-  std::string error;
-  bool bad_message = false;
-
-  scoped_refptr<const BaseClass> c1_a(
-      factory.Instantiate(kTypeName, d1.get(), &error, &bad_message));
-
-  factory.ClearPrototypes();
-
-  scoped_refptr<const BaseClass> c1_b(
-      factory.Instantiate(kTypeName, d1.get(), &error, &bad_message));
-
-  ASSERT_TRUE(c1_a.get());
-  ASSERT_TRUE(c1_b.get());
-  EXPECT_NE(c1_a, c1_b);
-}
-
-}  // namespace extensions