def editorTest():
editor = Editor()
print("adding new states \n")
editor.setContent("a")
history.push(editor.createState())
print(str(editor))
editor.setContent("b")
history.push(editor.createState())
print(str(editor))
editor.setContent("c")
history.push(editor.createState())
print(str(editor))
editor.setContent("d")
print(str(editor))
print("\nrestoring states \n")
editor.restore(history.pop())
print(str(editor))
editor.restore(history.pop())
print(str(editor))
editor.restore(history.pop())
print(str(editor))
return
def combinedTest():
document = Document()
editor = Editor()
print("adding new editor states")
editor.setContent("a")
history.push(editor.createState())
print(str(editor))
editor.setContent("b")
print(str(editor))
print("adding new document states")
document.setContent("Hello World!")
document.setFont("Times-New-Roman", 12)
history.push(deepcopy(document))
print(str(document))
document.setContent("foo bar baz")
document.setFont("Arial", 14)
print(str(document))
print("restoring from history")
editor.restore(history.pop(editor.createState()))
print(str(editor))
document = history.pop(document)
print(str(document))
