146 lines
3.8 KiB
Python
146 lines
3.8 KiB
Python
import pytest
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from testing.runner import and_exit
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def test_nothing_to_undo_redo(run):
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with run() as h, and_exit(h):
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h.press('M-u')
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h.await_text('nothing to undo!')
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h.press('M-U')
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h.await_text('nothing to redo!')
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@pytest.mark.parametrize('r', ('M-U', 'M-e'))
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def test_undo_redo(run, r):
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with run() as h, and_exit(h):
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h.press('hello')
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h.await_text('hello')
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h.press('M-u')
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h.await_text('undo: text')
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h.await_text_missing('hello')
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h.await_text_missing(' *')
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h.press(r)
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h.await_text('redo: text')
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h.await_text('hello')
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h.await_text(' *')
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def test_undo_redo_movement_interrupts_actions(run):
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with run() as h, and_exit(h):
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h.press('hello')
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h.press('Left')
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h.press('Right')
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h.press('world')
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h.press('M-u')
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h.await_text('undo: text')
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h.await_text('hello')
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def test_undo_redo_action_interrupts_actions(run):
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with run() as h, and_exit(h):
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h.press('hello')
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h.await_text('hello')
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h.press('BSpace')
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h.await_text_missing('hello')
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h.press('M-u')
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h.await_text('hello')
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h.press('world')
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h.await_text('helloworld')
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h.press('M-u')
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h.await_text_missing('world')
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h.await_text('hello')
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def test_undo_redo_mixed_newlines(run, tmpdir):
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f = tmpdir.join('f')
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f.write_binary(b'foo\nbar\r\n')
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with run(str(f)) as h, and_exit(h):
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h.press('hello')
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h.press('M-u')
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h.await_text('undo: text')
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h.await_text(' *')
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def test_undo_redo_with_save(run, tmpdir):
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f = tmpdir.join('f').ensure()
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with run(str(f)) as h, and_exit(h):
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h.press('hello')
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h.press('^S')
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h.await_text_missing(' *')
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h.press('M-u')
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h.await_text(' *')
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h.press('M-U')
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h.await_text_missing(' *')
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h.press('M-u')
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h.await_text(' *')
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h.press('^S')
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h.await_text_missing(' *')
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h.press('M-U')
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h.await_text(' *')
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def test_undo_redo_implicit_linebreak(run, tmpdir):
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f = tmpdir.join('f')
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def _assert_contents(s):
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assert f.read() == s
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with run(str(f)) as h, and_exit(h):
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h.press('hello')
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h.press('M-u')
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h.press('^S')
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h.await_text('saved!')
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h.run(lambda: _assert_contents(''))
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h.press('M-U')
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h.press('^S')
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h.await_text('saved!')
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h.run(lambda: _assert_contents('hello\n'))
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def test_redo_cleared_after_action(run, tmpdir):
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with run() as h, and_exit(h):
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h.press('hello')
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h.press('M-u')
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h.press('world')
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h.press('M-U')
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h.await_text('nothing to redo!')
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def test_undo_no_action_when_noop(run):
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with run() as h, and_exit(h):
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h.press('hello')
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h.press('Enter')
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h.press('world')
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h.press('Down')
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h.press('^K')
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h.press('M-u')
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h.await_text('undo: text')
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h.await_cursor_position(x=0, y=2)
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def test_undo_redo_causes_scroll(run):
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with run(height=8) as h, and_exit(h):
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for i in range(10):
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h.press('Enter')
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h.await_cursor_position(x=0, y=3)
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h.press('M-u')
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h.await_cursor_position(x=0, y=1)
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h.press('M-U')
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h.await_cursor_position(x=0, y=4)
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def test_undo_redo_clears_selection(run, ten_lines):
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# maintaining the selection across undo/redo is both difficult and not all
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# that useful. prior to this it was buggy anyway (a negative selection
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# indented and then undone would highlight out of bounds)
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with run(str(ten_lines), width=20) as h, and_exit(h):
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h.press('S-Down')
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h.press('Tab')
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h.await_cursor_position(x=4, y=2)
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h.press('M-u')
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h.await_cursor_position(x=0, y=2)
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h.assert_screen_attr_equals(1, [(-1, -1, 0)] * 20)
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