Fixing drag and drop visibility issues of tabs on a visiting desktop

chrome/browser/ui/ash/multi_user_window_manager_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 "chrome/browser/ui/ash/multi_user_window_manager.h"
 
 #include "ash/shell.h"
 #include "ash/test/ash_test_base.h"
 #include "ash/test/test_shell_delegate.h"
 #include "ash/wm/window_state.h"
@@ skipping 455 matching lines @@
   window(4)->RemoveTransientChild(window(6));
   EXPECT_EQ("S[A], S[], H[], H[], H[B], H[], S[], S[], S[], H[]", GetStatus());
   // Before we leave we need to reverse all transient window ownerships.
   window(0)->RemoveTransientChild(window(1));
   window(1)->RemoveTransientChild(window(2));
   window(4)->RemoveTransientChild(window(5));
   window(7)->RemoveTransientChild(window(8));
   window(7)->RemoveTransientChild(window(9));
 }
 
+// Test that the initial visibility state gets remembered.
+TEST_F(MultiUserWindowManagerTest, PreserveInitialVisibility) {
+  SetUpForThisManyWindows(4);
+
+  // Set our initial show state before we assign an owner.
+  window(0)->Show();
+  window(1)->Hide();
+  window(2)->Show();
+  window(3)->Hide();
+  EXPECT_EQ("S[], H[], S[], H[]", GetStatus());
+
+  // First test: The show state gets preserved upon user switch.
+  multi_user_window_manager()->SetWindowOwner(window(0), "A");
+  multi_user_window_manager()->SetWindowOwner(window(1), "A");
+  multi_user_window_manager()->SetWindowOwner(window(2), "B");
+  multi_user_window_manager()->SetWindowOwner(window(3), "B");
+  EXPECT_EQ("S[A], H[A], H[B], H[B]", GetStatus());
+  multi_user_window_manager()->ActiveUserChanged("B");
+  EXPECT_EQ("H[A], H[A], S[B], H[B]", GetStatus());
+  multi_user_window_manager()->ActiveUserChanged("A");
+  EXPECT_EQ("S[A], H[A], H[B], H[B]", GetStatus());
+
+  // Second test: Transferring the window to another desktop preserves the
+  // show state.
+  multi_user_window_manager()->ShowWindowForUser(window(0), "B");
+  multi_user_window_manager()->ShowWindowForUser(window(1), "B");
+  multi_user_window_manager()->ShowWindowForUser(window(2), "A");
+  multi_user_window_manager()->ShowWindowForUser(window(3), "A");
+  EXPECT_EQ("H[A,B], H[A,B], S[B,A], H[B,A]", GetStatus());
+  multi_user_window_manager()->ActiveUserChanged("B");
+  EXPECT_EQ("S[A,B], H[A,B], H[B,A], H[B,A]", GetStatus());
+  multi_user_window_manager()->ActiveUserChanged("A");
+  EXPECT_EQ("H[A,B], H[A,B], S[B,A], H[B,A]", GetStatus());
+}
+
 }  // namespace test
 }  // namespace ash