def test_clear_empty(self):
"""
Test clear method when list is empty
"""
dlist = DiskList()
dlist.clear()
self.assertTrue(len(dlist) == 0)
def test_clear(self):
"""
Test the clear method
"""
dlist = DiskList()
dlist.append('0')
dlist.append('1')
dlist.clear()
self.assertTrue(len(dlist) == 0)
def test_clear_not_empty(self):
"""
Test clear method
"""
dlist = DiskList()
dlist.append('0')
dlist.append('1')
dlist.append('2')
dlist.append('3')
dlist.clear()
self.assertTrue(len(dlist) == 0)
