Convert //base to use std::unique_ptr

base/callback_list_unittest.cc

 // Copyright 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 "base/callback_list.h"
 
+#include <memory>
 #include <utility>
 
 #include "base/bind.h"
 #include "base/bind_helpers.h"
 #include "base/macros.h"
-#include "base/memory/scoped_ptr.h"
 #include "testing/gtest/include/gtest/gtest.h"
 
 namespace base {
 namespace {
 
 class Listener {
  public:
   Listener() : total_(0), scaler_(1) {}
   explicit Listener(int scaler) : total_(0), scaler_(scaler) {}
   void IncrementTotal() { total_++; }
   void IncrementByMultipleOfScaler(int x) { total_ += x * scaler_; }
 
   int total() const { return total_; }
 
  private:
   int total_;
   int scaler_;
   DISALLOW_COPY_AND_ASSIGN(Listener);
 };
 
 class Remover {
  public:
   Remover() : total_(0) {}
   void IncrementTotalAndRemove() {
     total_++;
     removal_subscription_.reset();
   }
   void SetSubscriptionToRemove(
-      scoped_ptr<CallbackList<void(void)>::Subscription> sub) {
+      std::unique_ptr<CallbackList<void(void)>::Subscription> sub) {
     removal_subscription_ = std::move(sub);
   }
 
   int total() const { return total_; }
 
  private:
   int total_;
-  scoped_ptr<CallbackList<void(void)>::Subscription> removal_subscription_;
+  std::unique_ptr<CallbackList<void(void)>::Subscription> removal_subscription_;
   DISALLOW_COPY_AND_ASSIGN(Remover);
 };
 
 class Adder {
  public:
   explicit Adder(CallbackList<void(void)>* cb_reg)
       : added_(false),
         total_(0),
         cb_reg_(cb_reg) {
   }
   void AddCallback() {
     if (!added_) {
       added_ = true;
       subscription_ =
           cb_reg_->Add(Bind(&Adder::IncrementTotal, Unretained(this)));
     }
   }
   void IncrementTotal() { total_++; }
 
   bool added() const { return added_; }
 
   int total() const { return total_; }
 
  private:
   bool added_;
   int total_;
   CallbackList<void(void)>* cb_reg_;
-  scoped_ptr<CallbackList<void(void)>::Subscription> subscription_;
+  std::unique_ptr<CallbackList<void(void)>::Subscription> subscription_;
   DISALLOW_COPY_AND_ASSIGN(Adder);
 };
 
 class Summer {
  public:
   Summer() : value_(0) {}
 
   void AddOneParam(int a) { value_ = a; }
   void AddTwoParam(int a, int b) { value_ = a + b; }
   void AddThreeParam(int a, int b, int c) { value_ = a + b + c; }
@@ skipping 23 matching lines @@
  private:
   int value_;
   DISALLOW_COPY_AND_ASSIGN(Counter);
 };
 
 // Sanity check that we can instantiate a CallbackList for each arity.
 TEST(CallbackListTest, ArityTest) {
   Summer s;
 
   CallbackList<void(int)> c1;
-  scoped_ptr<CallbackList<void(int)>::Subscription> subscription1 =
+  std::unique_ptr<CallbackList<void(int)>::Subscription> subscription1 =
       c1.Add(Bind(&Summer::AddOneParam, Unretained(&s)));
 
   c1.Notify(1);
   EXPECT_EQ(1, s.value());
 
   CallbackList<void(int, int)> c2;
-  scoped_ptr<CallbackList<void(int, int)>::Subscription> subscription2 =
+  std::unique_ptr<CallbackList<void(int, int)>::Subscription> subscription2 =
       c2.Add(Bind(&Summer::AddTwoParam, Unretained(&s)));
 
   c2.Notify(1, 2);
   EXPECT_EQ(3, s.value());
 
   CallbackList<void(int, int, int)> c3;
-  scoped_ptr<CallbackList<void(int, int, int)>::Subscription>
+  std::unique_ptr<CallbackList<void(int, int, int)>::Subscription>
       subscription3 = c3.Add(Bind(&Summer::AddThreeParam, Unretained(&s)));
 
   c3.Notify(1, 2, 3);
   EXPECT_EQ(6, s.value());
 
   CallbackList<void(int, int, int, int)> c4;
-  scoped_ptr<CallbackList<void(int, int, int, int)>::Subscription>
+  std::unique_ptr<CallbackList<void(int, int, int, int)>::Subscription>
       subscription4 = c4.Add(Bind(&Summer::AddFourParam, Unretained(&s)));
 
   c4.Notify(1, 2, 3, 4);
   EXPECT_EQ(10, s.value());
 
   CallbackList<void(int, int, int, int, int)> c5;
-  scoped_ptr<CallbackList<void(int, int, int, int, int)>::Subscription>
+  std::unique_ptr<CallbackList<void(int, int, int, int, int)>::Subscription>
       subscription5 = c5.Add(Bind(&Summer::AddFiveParam, Unretained(&s)));
 
   c5.Notify(1, 2, 3, 4, 5);
   EXPECT_EQ(15, s.value());
 
   CallbackList<void(int, int, int, int, int, int)> c6;
-  scoped_ptr<CallbackList<void(int, int, int, int, int, int)>::Subscription>
+  std::unique_ptr<
+      CallbackList<void(int, int, int, int, int, int)>::Subscription>
       subscription6 = c6.Add(Bind(&Summer::AddSixParam, Unretained(&s)));
 
   c6.Notify(1, 2, 3, 4, 5, 6);
   EXPECT_EQ(21, s.value());
 }
 
 // Sanity check that closures added to the list will be run, and those removed
 // from the list will not be run.
 TEST(CallbackListTest, BasicTest) {
   CallbackList<void(void)> cb_reg;
   Listener a, b, c;
 
-  scoped_ptr<CallbackList<void(void)>::Subscription> a_subscription =
+  std::unique_ptr<CallbackList<void(void)>::Subscription> a_subscription =
       cb_reg.Add(Bind(&Listener::IncrementTotal, Unretained(&a)));
-  scoped_ptr<CallbackList<void(void)>::Subscription> b_subscription =
+  std::unique_ptr<CallbackList<void(void)>::Subscription> b_subscription =
       cb_reg.Add(Bind(&Listener::IncrementTotal, Unretained(&b)));
 
   EXPECT_TRUE(a_subscription.get());
   EXPECT_TRUE(b_subscription.get());
 
   cb_reg.Notify();
 
   EXPECT_EQ(1, a.total());
   EXPECT_EQ(1, b.total());
 
   b_subscription.reset();
 
-  scoped_ptr<CallbackList<void(void)>::Subscription> c_subscription =
+  std::unique_ptr<CallbackList<void(void)>::Subscription> c_subscription =
       cb_reg.Add(Bind(&Listener::IncrementTotal, Unretained(&c)));
 
   cb_reg.Notify();
 
   EXPECT_EQ(2, a.total());
   EXPECT_EQ(1, b.total());
   EXPECT_EQ(1, c.total());
 
   a_subscription.reset();
   b_subscription.reset();
   c_subscription.reset();
 }
 
 // Sanity check that callbacks with details added to the list will be run, with
 // the correct details, and those removed from the list will not be run.
 TEST(CallbackListTest, BasicTestWithParams) {
   CallbackList<void(int)> cb_reg;
   Listener a(1), b(-1), c(1);
 
-  scoped_ptr<CallbackList<void(int)>::Subscription> a_subscription =
+  std::unique_ptr<CallbackList<void(int)>::Subscription> a_subscription =
       cb_reg.Add(Bind(&Listener::IncrementByMultipleOfScaler, Unretained(&a)));
-  scoped_ptr<CallbackList<void(int)>::Subscription> b_subscription =
+  std::unique_ptr<CallbackList<void(int)>::Subscription> b_subscription =
       cb_reg.Add(Bind(&Listener::IncrementByMultipleOfScaler, Unretained(&b)));
 
   EXPECT_TRUE(a_subscription.get());
   EXPECT_TRUE(b_subscription.get());
 
   cb_reg.Notify(10);
 
   EXPECT_EQ(10, a.total());
   EXPECT_EQ(-10, b.total());
 
   b_subscription.reset();
 
-  scoped_ptr<CallbackList<void(int)>::Subscription> c_subscription =
+  std::unique_ptr<CallbackList<void(int)>::Subscription> c_subscription =
       cb_reg.Add(Bind(&Listener::IncrementByMultipleOfScaler, Unretained(&c)));
 
   cb_reg.Notify(10);
 
   EXPECT_EQ(20, a.total());
   EXPECT_EQ(-10, b.total());
   EXPECT_EQ(10, c.total());
 
   a_subscription.reset();
   b_subscription.reset();
   c_subscription.reset();
 }
 
 // Test the a callback can remove itself or a different callback from the list
 // during iteration without invalidating the iterator.
 TEST(CallbackListTest, RemoveCallbacksDuringIteration) {
   CallbackList<void(void)> cb_reg;
   Listener a, b;
   Remover remover_1, remover_2;
 
-  scoped_ptr<CallbackList<void(void)>::Subscription> remover_1_sub =
-      cb_reg.Add(Bind(&Remover::IncrementTotalAndRemove,
-          Unretained(&remover_1)));
-  scoped_ptr<CallbackList<void(void)>::Subscription> remover_2_sub =
-      cb_reg.Add(Bind(&Remover::IncrementTotalAndRemove,
-          Unretained(&remover_2)));
-  scoped_ptr<CallbackList<void(void)>::Subscription> a_subscription =
+  std::unique_ptr<CallbackList<void(void)>::Subscription> remover_1_sub =
+      cb_reg.Add(
+          Bind(&Remover::IncrementTotalAndRemove, Unretained(&remover_1)));
+  std::unique_ptr<CallbackList<void(void)>::Subscription> remover_2_sub =
+      cb_reg.Add(
+          Bind(&Remover::IncrementTotalAndRemove, Unretained(&remover_2)));
+  std::unique_ptr<CallbackList<void(void)>::Subscription> a_subscription =
       cb_reg.Add(Bind(&Listener::IncrementTotal, Unretained(&a)));
-  scoped_ptr<CallbackList<void(void)>::Subscription> b_subscription =
+  std::unique_ptr<CallbackList<void(void)>::Subscription> b_subscription =
       cb_reg.Add(Bind(&Listener::IncrementTotal, Unretained(&b)));
 
   // |remover_1| will remove itself.
   remover_1.SetSubscriptionToRemove(std::move(remover_1_sub));
   // |remover_2| will remove a.
   remover_2.SetSubscriptionToRemove(std::move(a_subscription));
 
   cb_reg.Notify();
 
   // |remover_1| runs once (and removes itself), |remover_2| runs once (and
@@ skipping 12 matching lines @@
   EXPECT_EQ(2, b.total());
 }
 
 // Test that a callback can add another callback to the list durning iteration
 // without invalidating the iterator. The newly added callback should be run on
 // the current iteration as will all other callbacks in the list.
 TEST(CallbackListTest, AddCallbacksDuringIteration) {
   CallbackList<void(void)> cb_reg;
   Adder a(&cb_reg);
   Listener b;
-  scoped_ptr<CallbackList<void(void)>::Subscription> a_subscription =
+  std::unique_ptr<CallbackList<void(void)>::Subscription> a_subscription =
       cb_reg.Add(Bind(&Adder::AddCallback, Unretained(&a)));
-  scoped_ptr<CallbackList<void(void)>::Subscription> b_subscription =
+  std::unique_ptr<CallbackList<void(void)>::Subscription> b_subscription =
       cb_reg.Add(Bind(&Listener::IncrementTotal, Unretained(&b)));
 
   cb_reg.Notify();
 
   EXPECT_EQ(1, a.total());
   EXPECT_EQ(1, b.total());
   EXPECT_TRUE(a.added());
 
   cb_reg.Notify();
 
   EXPECT_EQ(2, a.total());
   EXPECT_EQ(2, b.total());
 }
 
 // Sanity check: notifying an empty list is a no-op.
 TEST(CallbackListTest, EmptyList) {
   CallbackList<void(void)> cb_reg;
 
   cb_reg.Notify();
 }
 
 TEST(CallbackList, RemovalCallback) {
   Counter remove_count;
   CallbackList<void(void)> cb_reg;
   cb_reg.set_removal_callback(
       Bind(&Counter::Increment, Unretained(&remove_count)));
 
-  scoped_ptr<CallbackList<void(void)>::Subscription> subscription =
+  std::unique_ptr<CallbackList<void(void)>::Subscription> subscription =
       cb_reg.Add(Bind(&DoNothing));
 
   // Removing a subscription outside of iteration signals the callback.
   EXPECT_EQ(0, remove_count.value());
   subscription.reset();
   EXPECT_EQ(1, remove_count.value());
 
   // Configure two subscriptions to remove themselves.
   Remover remover_1, remover_2;
-  scoped_ptr<CallbackList<void(void)>::Subscription> remover_1_sub =
-      cb_reg.Add(Bind(&Remover::IncrementTotalAndRemove,
-          Unretained(&remover_1)));
-  scoped_ptr<CallbackList<void(void)>::Subscription> remover_2_sub =
-      cb_reg.Add(Bind(&Remover::IncrementTotalAndRemove,
-          Unretained(&remover_2)));
+  std::unique_ptr<CallbackList<void(void)>::Subscription> remover_1_sub =
+      cb_reg.Add(
+          Bind(&Remover::IncrementTotalAndRemove, Unretained(&remover_1)));
+  std::unique_ptr<CallbackList<void(void)>::Subscription> remover_2_sub =
+      cb_reg.Add(
+          Bind(&Remover::IncrementTotalAndRemove, Unretained(&remover_2)));
   remover_1.SetSubscriptionToRemove(std::move(remover_1_sub));
   remover_2.SetSubscriptionToRemove(std::move(remover_2_sub));
 
   // The callback should be signaled exactly once.
   EXPECT_EQ(1, remove_count.value());
   cb_reg.Notify();
   EXPECT_EQ(2, remove_count.value());
   EXPECT_TRUE(cb_reg.empty());
 }
 
 }  // namespace
 }  // namespace base