555 lines
16 KiB
Python
555 lines
16 KiB
Python
import contextlib
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import io
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import shlex
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import sys
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from typing import List
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import pytest
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from hecate import Runner
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import babi
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def test_position_repr():
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ret = repr(babi.Position())
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assert ret == 'Position(file_line=0, cursor_line=0, x=0, cursor_x_hint=0)'
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@pytest.mark.parametrize(
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('s', 'lines', 'nl', 'mixed'),
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(
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pytest.param('', [''], '\n', False, id='trivial'),
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pytest.param('1\n2\n', ['1', '2', ''], '\n', False, id='lf'),
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pytest.param('1\r\n2\r\n', ['1', '2', ''], '\r\n', False, id='crlf'),
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pytest.param('1\r\n2\n', ['1', '2', ''], '\n', True, id='mixed'),
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pytest.param('1\n2', ['1', '2', ''], '\n', False, id='noeol'),
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),
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)
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def test_get_lines(s, lines, nl, mixed):
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ret = babi._get_lines(io.StringIO(s))
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assert ret == (lines, nl, mixed)
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class PrintsErrorRunner(Runner):
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def __init__(self, *args, **kwargs):
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self._screenshots: List[str] = []
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super().__init__(*args, **kwargs)
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def screenshot(self, *args, **kwargs):
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ret = super().screenshot(*args, **kwargs)
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if not self._screenshots or self._screenshots[-1] != ret:
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self._screenshots.append(ret)
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return ret
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@contextlib.contextmanager
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def _onerror(self):
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try:
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yield
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except Exception: # pragma: no cover
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# take a screenshot of the final state
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self.screenshot()
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print('=' * 79, flush=True)
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for screenshot in self._screenshots:
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print(screenshot, end='', flush=True)
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print('=' * 79, flush=True)
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raise
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def await_exit(self, *args, **kwargs):
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with self._onerror():
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return super().await_exit(*args, **kwargs)
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def await_text(self, text, timeout=None):
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"""copied from the base implementation but doesn't munge newlines"""
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with self._onerror():
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for _ in self.poll_until_timeout(timeout):
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screen = self.screenshot()
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if text in screen:
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return
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raise AssertionError(
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f'Timeout while waiting for text {text!r} to appear',
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)
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def await_text_missing(self, s):
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"""largely based on await_text"""
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with self._onerror():
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for _ in self.poll_until_timeout():
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screen = self.screenshot()
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munged = screen.replace('\n', '')
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if s not in munged: # pragma: no branch
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return
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raise AssertionError(
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f'Timeout while waiting for text {s!r} to disappear',
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)
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def get_pane_size(self):
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cmd = ('display', '-t0', '-p', '#{pane_width}\t#{pane_height}')
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w, h = self.tmux.execute_command(*cmd).split()
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return int(w), int(h)
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def get_cursor_position(self):
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cmd = ('display', '-t0', '-p', '#{cursor_x}\t#{cursor_y}')
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x, y = self.tmux.execute_command(*cmd).split()
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return int(x), int(y)
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@contextlib.contextmanager
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def resize(self, width, height):
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current_w, current_h = self.get_pane_size()
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sleep_cmd = (
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'bash', '-c',
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f'echo {"*" * (current_w * current_h)} && '
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f'exec sleep infinity',
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)
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panes = 0
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hsplit_w = current_w - width - 1
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if hsplit_w > 0:
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cmd = ('split-window', '-ht0', '-l', hsplit_w, *sleep_cmd)
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self.tmux.execute_command(*cmd)
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panes += 1
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vsplit_h = current_h - height - 1
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if vsplit_h > 0: # pragma: no branch # TODO
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cmd = ('split-window', '-vt0', '-l', vsplit_h, *sleep_cmd)
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self.tmux.execute_command(*cmd)
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panes += 1
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assert self.get_pane_size() == (width, height)
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try:
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yield
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finally:
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for _ in range(panes):
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self.tmux.execute_command('kill-pane', '-t1')
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@contextlib.contextmanager
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def run(*args, color=True, **kwargs):
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cmd = (sys.executable, '-mcoverage', 'run', '-m', 'babi', *args)
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quoted = ' '.join(shlex.quote(p) for p in cmd)
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term = 'screen-256color' if color else 'screen'
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cmd = ('bash', '-c', f'export TERM={term}; exec {quoted}')
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with PrintsErrorRunner(*cmd, **kwargs) as h:
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h.await_text(babi.VERSION_STR)
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yield h
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@contextlib.contextmanager
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def and_exit(h):
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yield
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# only try and exit in non-exceptional cases
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h.press('C-x')
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h.await_exit()
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@pytest.mark.parametrize('color', (True, False))
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def test_color_test(color):
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with run('--color-test', color=color) as h, and_exit(h):
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h.await_text('* 1* 2')
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def test_can_start_without_color():
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with run(color=False) as h, and_exit(h):
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pass
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def test_window_height_2(tmpdir):
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# 2 tall:
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# - header is hidden, otherwise behaviour is normal
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f = tmpdir.join('f.txt')
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f.write('hello world')
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with run(str(f)) as h, and_exit(h):
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h.await_text('hello world')
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with h.resize(80, 2):
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h.await_text_missing(babi.VERSION_STR)
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assert h.screenshot() == 'hello world\n\n'
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h.press('C-j')
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h.await_text('unknown key')
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h.await_text(babi.VERSION_STR)
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def test_window_height_1(tmpdir):
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# 1 tall:
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# - only file contents as body
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# - status takes precedence over body, but cleared after single action
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f = tmpdir.join('f.txt')
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f.write('hello world')
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with run(str(f)) as h, and_exit(h):
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h.await_text('hello world')
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with h.resize(80, 1):
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h.await_text_missing(babi.VERSION_STR)
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assert h.screenshot() == 'hello world\n'
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h.press('C-j')
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h.await_text('unknown key')
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h.press('Right')
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h.await_text_missing('unknown key')
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h.press('Down')
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def test_status_clearing_behaviour():
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with run() as h, and_exit(h):
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h.press('C-j')
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h.await_text('unknown key')
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for i in range(24):
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h.press('LEFT')
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h.await_text('unknown key')
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h.press('LEFT')
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h.await_text_missing('unknown key')
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def test_reacts_to_resize():
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with run() as h, and_exit(h):
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first_line = h.screenshot().splitlines()[0]
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with h.resize(40, 20):
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# the first line should be different after resize
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h.await_text_missing(first_line)
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def test_mixed_newlines(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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# should start as modified
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h.await_text('f *')
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h.await_text(r"mixed newlines will be converted to '\n'")
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def test_arrow_key_movement(tmpdir):
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f = tmpdir.join('f')
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f.write(
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'short\n'
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'\n'
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'long long long long\n',
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)
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with run(str(f)) as h, and_exit(h):
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h.await_text('short')
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assert h.get_cursor_position() == (0, 1)
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# should not go off the beginning of the file
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h.press('Left')
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assert h.get_cursor_position() == (0, 1)
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h.press('Up')
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assert h.get_cursor_position() == (0, 1)
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# left and right should work
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h.press('Right')
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h.press('Right')
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assert h.get_cursor_position() == (2, 1)
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h.press('Left')
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assert h.get_cursor_position() == (1, 1)
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# up should still be a noop on line 1
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h.press('Up')
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assert h.get_cursor_position() == (1, 1)
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# down once should put it on the beginning of the second line
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h.press('Down')
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assert h.get_cursor_position() == (0, 2)
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# down again should restore the x positon on the next line
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h.press('Down')
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assert h.get_cursor_position() == (1, 3)
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# down once more should put it on the special end-of-file line
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h.press('Down')
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assert h.get_cursor_position() == (0, 4)
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# should not go off the end of the file
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h.press('Down')
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assert h.get_cursor_position() == (0, 4)
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h.press('Right')
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assert h.get_cursor_position() == (0, 4)
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# left should put it at the end of the line
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h.press('Left')
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assert h.get_cursor_position() == (19, 3)
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# right should put it to the next line
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h.press('Right')
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assert h.get_cursor_position() == (0, 4)
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# if the hint-x is too high it should not go past the end of line
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h.press('Left')
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h.press('Up')
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h.press('Up')
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assert h.get_cursor_position() == (5, 1)
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# and moving back down should still retain the hint-x
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h.press('Down')
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h.press('Down')
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assert h.get_cursor_position() == (19, 3)
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def test_scrolling_arrow_key_movement(tmpdir):
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f = tmpdir.join('f')
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f.write('\n'.join(f'line_{i}' for i in range(10)))
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with run(str(f), height=10) as h, and_exit(h):
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h.await_text('line_7')
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# we should not have scrolled after 7 presses
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for _ in range(7):
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h.press('Down')
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h.await_text('line_0')
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assert h.get_cursor_position() == (0, 8)
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# but this should scroll down
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h.press('Down')
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h.await_text('line_8')
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assert h.get_cursor_position() == (0, 4)
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assert h.screenshot().splitlines()[4] == 'line_8'
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# we should not have scrolled after 3 up presses
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for _ in range(3):
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h.press('Up')
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h.await_text('line_9')
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# but this should scroll up
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h.press('Up')
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h.await_text('line_0')
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@pytest.mark.parametrize('k', ('End', 'C-e'))
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def test_end_key(tmpdir, k):
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f = tmpdir.join('f')
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f.write('hello world\nhello world\n')
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with run(str(f)) as h, and_exit(h):
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h.await_text('hello world')
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assert h.get_cursor_position() == (0, 1)
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h.press(k)
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assert h.get_cursor_position() == (11, 1)
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h.press('Down')
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assert h.get_cursor_position() == (11, 2)
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@pytest.mark.parametrize('k', ('Home', 'C-a'))
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def test_home_key(tmpdir, k):
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f = tmpdir.join('f')
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f.write('hello world\nhello world\n')
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with run(str(f)) as h, and_exit(h):
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h.await_text('hello world')
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h.press('Down')
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h.press('Left')
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assert h.get_cursor_position() == (11, 1)
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h.press(k)
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assert h.get_cursor_position() == (0, 1)
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h.press('Down')
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assert h.get_cursor_position() == (0, 2)
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def test_resize_scrolls_up(tmpdir):
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f = tmpdir.join('f')
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f.write('\n'.join(f'line_{i}' for i in range(10)))
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with run(str(f)) as h, and_exit(h):
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h.await_text('line_9')
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for _ in range(7):
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h.press('Down')
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assert h.get_cursor_position() == (0, 8)
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# a resize to a height of 10 should not scroll
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with h.resize(80, 10):
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h.await_text_missing('line_8')
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assert h.get_cursor_position() == (0, 8)
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h.await_text('line_8')
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# but a resize to smaller should
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with h.resize(80, 9):
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h.await_text_missing('line_0')
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assert h.get_cursor_position() == (0, 3)
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# make sure we're still on the same line
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assert h.screenshot().splitlines()[3] == 'line_7'
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def test_very_narrow_window_status():
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with run(height=50) as h, and_exit(h):
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with h.resize(5, 50):
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h.press('C-j')
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h.await_text('unkno')
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def test_horizontal_scrolling(tmpdir):
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f = tmpdir.join('f')
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lots_of_text = ''.join(
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''.join(str(i) * 10 for i in range(10))
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for _ in range(10)
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)
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f.write(f'line1\n{lots_of_text}\n')
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with run(str(f)) as h, and_exit(h):
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h.await_text('6777777777»')
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h.press('Down')
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for _ in range(78):
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h.press('Right')
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h.await_text('6777777777»')
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h.press('Right')
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h.await_text('«77777778')
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h.await_text('344444444445»')
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assert h.get_cursor_position() == (7, 2)
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for _ in range(71):
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h.press('Right')
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h.await_text('«77777778')
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h.await_text('344444444445»')
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h.press('Right')
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h.await_text('«444445')
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h.await_text('1222»')
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def test_horizontal_scrolling_exact_width(tmpdir):
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f = tmpdir.join('f')
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f.write('0' * 80)
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with run(str(f)) as h, and_exit(h):
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h.await_text('000')
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for _ in range(78):
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h.press('Right')
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h.await_text_missing('»')
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assert h.get_cursor_position() == (78, 1)
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h.press('Right')
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h.await_text('«0000000')
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assert h.get_cursor_position() == (7, 1)
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def test_horizontal_scrolling_narrow_window(tmpdir):
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f = tmpdir.join('f')
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f.write(''.join(str(i) * 10 for i in range(10)))
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with run(str(f)) as h, and_exit(h):
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with h.resize(5, 24):
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h.await_text('0000»')
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for _ in range(3):
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h.press('Right')
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h.await_text('0000»')
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h.press('Right')
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assert h.get_cursor_position() == (3, 1)
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h.await_text('«000»')
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for _ in range(6):
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h.press('Right')
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h.await_text('«001»')
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def test_window_width_1(tmpdir):
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f = tmpdir.join('f')
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f.write('hello')
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with run(str(f)) as h, and_exit(h):
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with h.resize(1, 24):
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h.await_text('»')
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for _ in range(3):
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h.press('Right')
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h.await_text('hello')
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assert h.get_cursor_position() == (3, 1)
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def test_basic_text_editing(tmpdir):
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with run() as h, and_exit(h):
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h.press('hello world')
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h.await_text('hello world')
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h.press('Down')
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h.press('bye!')
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h.await_text('bye!')
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assert h.screenshot().strip().endswith('world\nbye!')
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def test_backspace_at_beginning_of_file():
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with run() as h, and_exit(h):
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h.press('Bspace')
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h.await_text_missing('unknown key')
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assert h.screenshot().strip().splitlines()[1:] == []
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assert '*' not in h.screenshot()
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def test_backspace_joins_lines(tmpdir):
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f = tmpdir.join('f')
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f.write('foo\nbar\nbaz\n')
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with run(str(f)) as h, and_exit(h):
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h.await_text('foo')
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h.press('Down')
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h.press('Bspace')
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h.await_text('foobar')
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h.await_text('f *')
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assert h.get_cursor_position() == (3, 1)
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# pressing down should retain the X position
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h.press('Down')
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assert h.get_cursor_position() == (3, 2)
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def test_backspace_at_end_of_file_still_allows_scrolling_down(tmpdir):
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f = tmpdir.join('f')
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f.write('hello world')
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with run(str(f)) as h, and_exit(h):
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h.await_text('hello world')
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h.press('Down')
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h.press('Bspace')
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h.press('Down')
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assert h.get_cursor_position() == (0, 2)
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assert '*' not in h.screenshot()
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def test_backspace_deletes_text(tmpdir):
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f = tmpdir.join('f')
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f.write('ohai there')
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with run(str(f)) as h, and_exit(h):
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h.await_text('ohai there')
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for _ in range(3):
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h.press('Right')
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h.press('Bspace')
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h.await_text('ohi')
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h.await_text('f *')
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assert h.get_cursor_position() == (2, 1)
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def test_delete_at_end_of_file(tmpdir):
|
|
with run() as h, and_exit(h):
|
|
h.press('DC')
|
|
h.await_text_missing('unknown key')
|
|
h.await_text_missing('*')
|
|
|
|
|
|
def test_delete_removes_character_afterwards(tmpdir):
|
|
f = tmpdir.join('f')
|
|
f.write('hello world')
|
|
|
|
with run(str(f)) as h, and_exit(h):
|
|
h.await_text('hello world')
|
|
h.press('Right')
|
|
h.press('DC')
|
|
h.await_text('hllo world')
|
|
h.await_text('f *')
|
|
|
|
|
|
def test_delete_at_end_of_line(tmpdir):
|
|
f = tmpdir.join('f')
|
|
f.write('hello\nworld\n')
|
|
|
|
with run(str(f)) as h, and_exit(h):
|
|
h.await_text('hello')
|
|
h.press('Down')
|
|
h.press('Left')
|
|
h.press('DC')
|
|
h.await_text('helloworld')
|
|
h.await_text('f *')
|
|
|
|
|
|
def test_press_enter_beginning_of_file(tmpdir):
|
|
f = tmpdir.join('f')
|
|
f.write('hello world')
|
|
|
|
with run(str(f)) as h, and_exit(h):
|
|
h.await_text('hello world')
|
|
h.press('Enter')
|
|
h.await_text('\n\nhello world')
|
|
assert h.get_cursor_position() == (0, 2)
|
|
h.await_text('f *')
|
|
|
|
|
|
def test_press_enter_mid_line(tmpdir):
|
|
f = tmpdir.join('f')
|
|
f.write('hello world')
|
|
|
|
with run(str(f)) as h, and_exit(h):
|
|
h.await_text('hello world')
|
|
for _ in range(5):
|
|
h.press('Right')
|
|
h.press('Enter')
|
|
h.await_text('hello\n world')
|
|
assert h.get_cursor_position() == (0, 2)
|
|
h.press('Up')
|
|
assert h.get_cursor_position() == (0, 1)
|