Attempt 2 at: Makes Window not change focus and send out

ui/aura/window_unittest.cc

Index: ui/aura/window_unittest.cc
diff --git a/ui/aura/window_unittest.cc b/ui/aura/window_unittest.cc
index 668abad81ab6901f1f82cf4c9890e46215912ea6..cb7ad0ec7e7458e3d53053a91fefb2af2dd9201c 100644
--- a/ui/aura/window_unittest.cc
+++ b/ui/aura/window_unittest.cc
@@ -8,6 +8,7 @@
 
 #include "base/basictypes.h"
 #include "base/compiler_specific.h"
+#include "base/string_number_conversions.h"
 #include "base/stringprintf.h"
 #include "testing/gtest/include/gtest/gtest.h"
 #include "ui/aura/client/capture_client.h"
@@ -583,7 +584,9 @@ TEST_F(WindowTest, WindowAddedToRootWindowShouldNotifyChildAndNotParent) {
   AddedToRootWindowObserver parent_observer;
   AddedToRootWindowObserver child_observer;
   scoped_ptr<Window> parent_window(CreateTestWindowWithId(1, NULL));
-  scoped_ptr<Window> child_window(CreateTestWindowWithId(1, NULL));
+  scoped_ptr<Window> child_window(new Window(NULL));
+  child_window->Init(ui::LAYER_TEXTURED);
+  child_window->Show();
 
   parent_window->AddObserver(&parent_observer);
   child_window->AddObserver(&child_observer);
@@ -2461,5 +2464,53 @@ TEST_F(WindowTest, DelegateNotifiedAsBoundsChangeInHiddenLayer) {
   EXPECT_NE("0,0 100x100", window->bounds().ToString());
 }
 
+namespace {
+
+// Used by AddChildNotifications to track notification counts.
+class AddChildNotificationsObserver : public WindowObserver {
+ public:
+  AddChildNotificationsObserver() : added_count_(0), removed_count_(0) {}
+
+  std::string CountStringAndReset() {
+    std::string result = base::IntToString(added_count_) + " " +
+        base::IntToString(removed_count_);
+    added_count_ = removed_count_ = 0;
+    return result;
+  }
+
+  // WindowObserver overrides:
+  virtual void OnWindowAddedToRootWindow(Window* window) OVERRIDE {
+    added_count_++;
+  }
+  virtual void OnWindowRemovingFromRootWindow(Window* window) OVERRIDE {
+    removed_count_++;
+  }
+
+ private:
+  int added_count_;
+  int removed_count_;
+
+  DISALLOW_COPY_AND_ASSIGN(AddChildNotificationsObserver);
+};
+
+}  // namespace
+
+// Assertions around when root window notifications are sent.
+TEST_F(WindowTest, AddChildNotifications) {
+  AddChildNotificationsObserver observer;
+  scoped_ptr<Window> w1(CreateTestWindowWithId(1, NULL));
+  scoped_ptr<Window> w2(CreateTestWindowWithId(1, NULL));
+  w2->AddObserver(&observer);
+  w2->Focus();
+  EXPECT_TRUE(w2->HasFocus());
+
+  // Move |w2| to be a child of |w1|.
+  w1->AddChild(w2.get());
+  // Sine we moved in the same root, observer shouldn't be notified.
+  EXPECT_EQ("0 0", observer.CountStringAndReset());
+  // |w2| should still have focus after moving.
+  EXPECT_TRUE(w2->HasFocus());
+}
+
 }  // namespace test
 }  // namespace aura