mash: Support ShelfModel access in Chrome.

ash/shelf/shelf_model_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 "ash/shelf/shelf_model.h"
 
 #include <set>
 #include <string>
 
 #include "ash/shelf/shelf_model_observer.h"
 #include "base/strings/stringprintf.h"
 #include "testing/gtest/include/gtest/gtest.h"
 
 namespace ash {
 
 namespace {
 
-constexpr char kAppListId[] = "jlfapfmkapbjlfbpjedlinehodkccjee";
-
 // ShelfModelObserver implementation that tracks what message are invoked.
 class TestShelfModelObserver : public ShelfModelObserver {
  public:
   TestShelfModelObserver() {}
 
   // Returns a string description of the changes that have occurred since this
   // was last invoked. Resets state to initial state.
   std::string StateStringAndClear() {
     std::string result;
     AddToResult("added=%d", added_count_, &result);
     AddToResult("removed=%d", removed_count_, &result);
     AddToResult("changed=%d", changed_count_, &result);
     AddToResult("moved=%d", moved_count_, &result);
     added_count_ = removed_count_ = changed_count_ = moved_count_ = 0;
     return result;
   }
 
   // ShelfModelObserver overrides:
   void ShelfItemAdded(int) override { added_count_++; }
   void ShelfItemRemoved(int, const ShelfItem&) override { removed_count_++; }
   void ShelfItemChanged(int, const ShelfItem&) override { changed_count_++; }
   void ShelfItemMoved(int, int) override { moved_count_++; }
+  void ShelfItemDelegateChanged(const ShelfID&, ShelfItemDelegate*) override {}
 
  private:
   void AddToResult(const std::string& format, int count, std::string* result) {
     if (!count)
       return;
     if (!result->empty())
       *result += " ";
     *result += base::StringPrintf(format.c_str(), count);
   }
 
   int added_count_ = 0;
   int removed_count_ = 0;
   int changed_count_ = 0;
   int moved_count_ = 0;
 
   DISALLOW_COPY_AND_ASSIGN(TestShelfModelObserver);
 };
 
 }  // namespace
 
 class ShelfModelTest : public testing::Test {
  public:
   ShelfModelTest() {}
   ~ShelfModelTest() override {}
 
   void SetUp() override {
     model_.reset(new ShelfModel);
     observer_.reset(new TestShelfModelObserver);
-    EXPECT_EQ(0, model_->item_count());
-
-    ShelfItem item;
-    item.type = TYPE_APP_LIST;
-    item.id = ShelfID(kAppListId);
-    model_->Add(item);
-    EXPECT_EQ(1, model_->item_count());
-
     model_->AddObserver(observer_.get());
   }
 
   void TearDown() override {
     observer_.reset();
     model_.reset();
   }
 
   std::unique_ptr<ShelfModel> model_;
   std::unique_ptr<TestShelfModelObserver> observer_;
 
  private:
   DISALLOW_COPY_AND_ASSIGN(ShelfModelTest);
 };
 
+TEST_F(ShelfModelTest, IntializesAppListItem) {
+  EXPECT_EQ(1, model_->item_count());
+  EXPECT_EQ(kAppListId, model_->items()[0].id.app_id);
+  // The ShelfModel does not initialize the AppList's ShelfItemDelegate.
+  // ShelfController does that to prevent Chrome from creating its own delegate.
+  EXPECT_FALSE(model_->GetShelfItemDelegate(ShelfID(kAppListId)));
+}
+
 TEST_F(ShelfModelTest, BasicAssertions) {
   // Add an item.
   ShelfItem item1;
   item1.id = ShelfID("item1");
   item1.type = TYPE_PINNED_APP;
   int index = model_->Add(item1);
   EXPECT_EQ(2, model_->item_count());
   EXPECT_LE(0, model_->ItemIndexByID(item1.id));
   EXPECT_NE(model_->items().end(), model_->ItemByID(item1.id));
   EXPECT_EQ("added=1", observer_->StateStringAndClear());
@@ skipping 321 matching lines @@
 
   // Unpinning the same app id again should have no change.
   model_->UnpinAppWithID(app_id);
   EXPECT_FALSE(model_->IsAppPinned(app_id));
   EXPECT_EQ(2, model_->item_count());
   EXPECT_EQ(TYPE_APP, model_->items()[index].type);
   EXPECT_EQ(item.id, model_->items()[index].id);
 }
 
 }  // namespace ash