def test_get_length(self):
SRC = SourceString('hello world')
assert SRC.get_length(5) == 'hello'
assert SRC.get_length(11) == 'hello world'
assert SRC.get_length(12) == ''
assert SRC.get_length(12, True) == 'hello world'
def test_eat_string_multiline_peices(self):
SRC = SourceString('hello\nworld')
SRC.eat_string(SRC.get_length(5))
assert SRC.row == 1
assert SRC.col == 5
assert SRC.get_char() == '\n'
SRC.eat_string(SRC.get_char())
assert SRC.row == 2
assert SRC.col == 0
SRC.eat_string(SRC.get_length(5))
assert SRC.row == 2
assert SRC.col == 5
assert SRC.get_char() == ''
