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import pytest
from prompt_toolkit.buffer import Buffer
@pytest.fixture
def _buffer():
buff = Buffer()
return buff
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 shorter.
_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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