Make an AddAll in ListModel.

ui/base/models/list_model_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 "ui/base/models/list_model.h"
 
 #include "base/basictypes.h"
 #include "base/compiler_specific.h"
 #include "base/memory/scoped_ptr.h"
+#include "base/memory/scoped_vector.h"
 #include "testing/gtest/include/gtest/gtest.h"
 
 namespace ui {
 
 class FooItem {
  public:
   explicit FooItem(int id) : id_(id) {}
 
   int id() const { return id_; }
 
@@ skipping 67 matching lines @@
 
   // Total 3 items in model.
   EXPECT_EQ(3U, model.item_count());
 
   // First one should be FooItem(2), followed by FooItem(0) and FooItem(1)
   EXPECT_EQ(2, model.GetItemAt(0)->id());
   EXPECT_EQ(0, model.GetItemAt(1)->id());
   EXPECT_EQ(1, model.GetItemAt(2)->id());
 }
 
+TEST_F(ListModelTest, AddAll) {
+  ListModel<FooItem> model;
+  model.AddObserver(this);
+
+  // Append FooItem(0)
+  model.Add(new FooItem(0));
+  ExpectCountsEqual(1, 0, 0, 0);
+
+  ScopedVector<FooItem> items;
+  items.push_back(new FooItem(1));
+  items.push_back(new FooItem(2));
+
+  // Append FooItem(1), FooItem(2)
+  model.AddAll(items.Pass());
+  ExpectCountsEqual(3, 0, 0, 0);
+
+  // Onwership of FooItems transferred.
+  EXPECT_TRUE(items.empty());
+
+  // Total 3 items in model.
+  EXPECT_EQ(3U, model.item_count());
+
+  // First one should be FooItem(0), followed by FooItem(1) and FooItem(2)
+  EXPECT_EQ(0, model.GetItemAt(0)->id());
+  EXPECT_EQ(1, model.GetItemAt(1)->id());
+  EXPECT_EQ(2, model.GetItemAt(2)->id());
+}
+
 TEST_F(ListModelTest, Remove) {
   ListModel<FooItem> model;
   model.AddObserver(this);
 
   model.Add(new FooItem(0));
   model.Add(new FooItem(1));
   model.Add(new FooItem(2));
 
   ClearCounts();
 
@@ skipping 58 matching lines @@
   ClearCounts();
 
   model.NotifyItemsChanged(0, 1);
   ExpectCountsEqual(0, 0, 0, 1);
 
   model.NotifyItemsChanged(1, 2);
   ExpectCountsEqual(0, 0, 0, 3);
 }
 
 }  // namespace ui