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from __future__ import unicode_literals
from prompt_toolkit.buffer import Buffer
import pytest
@pytest.fixture
def _buffer():
return Buffer()
def test_initial(_buffer):
assert _buffer.text == ''
assert _buffer.cursor_position == 0
def test_insert_text(_buffer):
_buffer.insert_text('some_text')
assert _buffer.text == 'some_text'
assert _buffer.cursor_position == len('some_text')
def test_cursor_movement(_buffer):
_buffer.insert_text('some_text')
_buffer.cursor_left()
_buffer.cursor_left()
_buffer.cursor_left()
_buffer.cursor_right()
_buffer.insert_text('A')
assert _buffer.text == 'some_teAxt'
assert _buffer.cursor_position == len('some_teA')
def test_backspace(_buffer):
_buffer.insert_text('some_text')
_buffer.cursor_left()
_buffer.cursor_left()
_buffer.delete_before_cursor()
assert _buffer.text == 'some_txt'
assert _buffer.cursor_position == len('some_t')
def test_cursor_up(_buffer):
# Cursor up to a line thats longer.
_buffer.insert_text('long line1\nline2')
_buffer.cursor_up()
assert _buffer.document.cursor_position == 5
# Going up when already at the top.
_buffer.cursor_up()
assert _buffer.document.cursor_position == 5
# Going up to a line that's shorter.
_buffer.reset()
_buffer.insert_text('line1\nlong line2')
_buffer.cursor_up()
assert _buffer.document.cursor_position == 5
def test_cursor_down(_buffer):
_buffer.insert_text('line1\nline2')
_buffer.cursor_position = 3
# Normally going down
_buffer.cursor_down()
assert _buffer.document.cursor_position == len('line1\nlin')
# Going down to a line that's storter.
_buffer.reset()
_buffer.insert_text('long line1\na\nb')
_buffer.cursor_position = 3
_buffer.cursor_down()
assert _buffer.document.cursor_position == len('long line1\na')
def test_join_next_line(_buffer):
_buffer.insert_text('line1\nline2\nline3')
_buffer.cursor_up()
_buffer.join_next_line()
assert _buffer.text == 'line1\nline2 line3'
# Test when there is no '\n' in the text
_buffer.reset()
_buffer.insert_text('line1')
_buffer.cursor_position = 0
_buffer.join_next_line()
assert _buffer.text == 'line1'
def test_newline(_buffer):
_buffer.insert_text('hello world')
_buffer.newline()
assert _buffer.text == 'hello world\n'
def test_swap_characters_before_cursor(_buffer):
_buffer.insert_text('hello world')
_buffer.cursor_left()
_buffer.cursor_left()
_buffer.swap_characters_before_cursor()
assert _buffer.text == 'hello wrold'
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