Create a RegisterViewAssociate method in ViewManager

services/ui/view_manager/tests/view_associate_table_test.cc

+// Copyright 2016 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 "mojo/services/ui/views/interfaces/view_manager.mojom.h"
+#include "mojo/services/ui/views/interfaces/views.mojom.h"
+#include "mojo/ui/associates/mock_view_inspector.h"
+#include "services/ui/view_manager/tests/mock_view_associate.h"
+#include "services/ui/view_manager/tests/view_manager_test_base.h"
+#include "services/ui/view_manager/view_associate_table.h"
+
+namespace view_manager {
+namespace test {
+
+class ViewAssociateTableTest : public ViewManagerTestBase {
+ public:
+  ViewAssociateTableTest() {}
+  ~ViewAssociateTableTest() override {}
+
+  void SetUp() override { ViewManagerTestBase::SetUp(); }
+
+  // we have special permission to access ViewAssociateTable::associates_ since

[jeffbrown, 2016/05/11 23:44:16]

Slightly cleaner way to do this is to add an "associate_count()" method to
ViewAssociateTable.

+  // we are a friend class
+  int GetViewAssociateTableSize(
+      const ViewAssociateTable& view_associate_table) {
+    return view_associate_table.associates_.size();
+  }
+
+ private:
+  DISALLOW_COPY_AND_ASSIGN(ViewAssociateTableTest);
+};
+
+TEST_F(ViewAssociateTableTest, RegisterViewAssociateThenCloseIt) {
+  // Create a mock view registry
+  mojo::ui::MockViewInspector mock_view_inspector;
+
+  // Create a view associate table
+  ViewAssociateTable view_associate_table;
+
+  {
+    // Create and bind a MockViewAssociate
+    mojo::ui::ViewAssociatePtr associate;
+    MockViewAssociate mock_view_associate;
+    mojo::Binding<mojo::ui::ViewAssociate> view_associate_binding(
+        &mock_view_associate, mojo::GetProxy(&associate));
+
+    // call ViewAssociateTable::RegisterViewAssociate
+    EXPECT_EQ(0, GetViewAssociateTableSize(view_associate_table));
+
+    ViewAssociateTable::AssociateConnectionErrorCallback null_callback;
+    view_associate_table.RegisterViewAssociate(&mock_view_inspector,
+                                               associate.Pass(), null_callback);
+    KICK_MESSAGE_LOOP_WHILE(GetViewAssociateTableSize(view_associate_table) !=
+                            1);
+    EXPECT_EQ(1, GetViewAssociateTableSize(view_associate_table));
+  }
+
+  // ViewAssociate has been destroyed (since it's out of scope now)
+  // Make sure it's been removed
+  KICK_MESSAGE_LOOP_WHILE(GetViewAssociateTableSize(view_associate_table) != 0);
+  EXPECT_EQ(0, GetViewAssociateTableSize(view_associate_table));
+}
+
+}  // namespace test
+}  // namespace view_manager