def test_is_next_char():
stream = CharStream('a3')
assert stream.get(0).value == 'a'
assert not stream.get(1).value == 'C'
assert stream.get(1).value == '3'
def test_char_values():
text = 'i76hj-'
stream = CharStream(text)
values = ''.join([stream.get(i).value for i, _ in enumerate(text)])
assert values == text
def test_empty_text_is_eof():
stream = CharStream()
assert stream.get().is_eof()
def test_char_column():
text = 'ab\nc\n\nd'
stream = CharStream(text)
lines = [stream.get(i).column for i, _ in enumerate(text)]
assert lines == [0, 1, 2, 0, 1, 0, 0]
def test_char_line():
text = 'ab\nc\n\nd'
stream = CharStream(text)
lines = [stream.get(i).line for i, _ in enumerate(text)]
assert lines == [0, 0, 0, 1, 1, 2, 3]
def test_char_type(test_input, method):
stream = CharStream(test_input)
ch = stream.get()
assert getattr(ch, method)()