def test_editingMarksCollisionsWithNonSpaceWithAt(self):
p = Pencil(length=40, pointDurability=1000, eraserDurability=200)
p.write("An apple a day keeps the doctor away")
p.erase("apple")
p.overwrite("artichoke")
self.assertTrue(p.getText() == "An artich@k@ay keeps the doctor away")
def test_editingOverwritesErasedText(self):
p = Pencil(length=40, pointDurability=1000, eraserDurability=200)
p.write("An apple a day keeps the doctor away")
p.erase("apple")
p.overwrite("onion")
self.assertTrue(p.getText() == "An onion a day keeps the doctor away")
