public override void TestTearDown()
{
if (m_mainWnd != null)
{
m_mainWnd.CloseViews();
// Before we close the main window undo anything on the main window's undo stack
// (separate from the undo stack created when the cache was created).
UndoAll();
m_mainWnd.Close();
}
m_mainWnd = null;
base.TestTearDown();
}