def test_text_buffer_newline():
tb = text_buffer.TextBuffer('abc\ndef\nghi')
tb.line = 1
tb.column = 2
tb.newline()
assert tb.position == (2, 0)
def test_text_buffer_end_of_line_next_char():
tb = text_buffer.TextBuffer('abcdef')
tb.column = 5
assert tb.current_char == 'f'
with pytest.raises(text_buffer.EOLError):
tb.next_char
def test_text_buffer_multiple_lines():
tb = text_buffer.TextBuffer('abc\ndef\nghi')
tb.line = 1
tb.column = 1
assert tb.current_line == 'def'
assert tb.current_char == 'e'
assert tb.next_char == 'f'
def test_text_buffer_init_one_line():
tb = text_buffer.TextBuffer('abcdef')
assert tb.current_char == 'a'
assert tb.next_char == 'b'
assert tb.current_line == 'abcdef'
assert tb.line == 0
assert tb.column == 0
def test_text_buffer_skip_accepts_value():
tb = text_buffer.TextBuffer('abc\ndef\nghi')
tb.skip(3)
assert tb.column == 3
def test_text_buffer_skip_defaults_to_one():
tb = text_buffer.TextBuffer('abc\ndef\nghi')
tb.skip()
assert tb.column == 1
def test_text_buffer_position():
tb = text_buffer.TextBuffer()
tb.line = 123
tb.column = 456
assert tb.position == (123, 456)
def test_text_buffer_tail():
ts = text_buffer.TextBuffer('abcdefgh')
ts.column = 4
assert ts.tail == 'efgh'
def test_text_buffer_init_empty():
tb = text_buffer.TextBuffer()
with pytest.raises(text_buffer.EOFError):
tb.current_char
def test_text_buffer_error_after_end_of_file():
tb = text_buffer.TextBuffer('abcdef')
tb.line = 100
with pytest.raises(text_buffer.EOFError):
tb.current_line
def test_text_buffer_end_of_line_current_char():
tb = text_buffer.TextBuffer('abcdef')
tb.column = 200
with pytest.raises(text_buffer.EOLError):
tb.current_char
def test_text_buffer_goto_default_column():
tb = text_buffer.TextBuffer()
tb.goto(12)
assert tb.position == (12, 0)
def test_text_buffer_goto():
tb = text_buffer.TextBuffer()
tb.goto(12, 45)
assert tb.position == (12, 45)