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89 lines
2.9 KiB
Python
89 lines
2.9 KiB
Python
"""Verify Shift+Enter byte sequences parse to the same key tuple Alt+Enter
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produces, so the existing Alt+Enter newline handler in `cli.py` fires for
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terminals that emit a distinct Shift+Enter under the Kitty keyboard protocol
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or xterm modifyOtherKeys mode.
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"""
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from __future__ import annotations
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import pytest
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from prompt_toolkit.input.ansi_escape_sequences import ANSI_SEQUENCES
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from prompt_toolkit.input.vt100_parser import Vt100Parser
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from prompt_toolkit.keys import Keys
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from hermes_cli.pt_input_extras import install_shift_enter_alias
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SHIFT_ENTER_SEQUENCES = (
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"\x1b[13;2u", # Kitty / CSI-u, modifier=2 (Shift)
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"\x1b[27;2;13~", # xterm modifyOtherKeys=2
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"\x1b[27;2;13u",
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)
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@pytest.fixture(autouse=True)
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def _ensure_alias_installed():
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"""Make every test idempotent — install the alias once per test run."""
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install_shift_enter_alias()
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def _parse(byte_seq: str):
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out = []
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parser = Vt100Parser(out.append)
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for ch in byte_seq:
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parser.feed(ch)
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parser.flush()
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return [kp.key for kp in out]
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def test_install_registers_all_three_sequences():
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for seq in SHIFT_ENTER_SEQUENCES:
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assert seq in ANSI_SEQUENCES, f"missing mapping for {seq!r}"
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assert ANSI_SEQUENCES[seq] == (Keys.Escape, Keys.ControlM)
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def test_install_overwrites_stock_modifyotherkeys_shift_enter():
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"""Stock prompt_toolkit maps `\\x1b[27;2;13~` to plain Keys.ControlM —
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i.e. it drops the Shift modifier and treats Shift+Enter like Enter,
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which is the bug this helper exists to fix. The install must overwrite
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that entry."""
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seq = "\x1b[27;2;13~"
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ANSI_SEQUENCES[seq] = Keys.ControlM
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install_shift_enter_alias()
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assert ANSI_SEQUENCES[seq] == (Keys.Escape, Keys.ControlM)
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def test_install_returns_zero_when_already_correct():
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"""Idempotency — running install twice should not report a second change."""
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install_shift_enter_alias()
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assert install_shift_enter_alias() == 0
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def test_csi_u_shift_enter_parses_as_alt_enter():
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"""Kitty keyboard protocol Shift+Enter must parse to the same key tuple
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Alt+Enter produces, so the existing handler is reused."""
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alt_enter = _parse("\x1b\r")
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shift_enter = _parse("\x1b[13;2u")
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assert shift_enter == alt_enter, (
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f"Shift+Enter via CSI-u should parse identically to Alt+Enter; "
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f"got {shift_enter!r} vs {alt_enter!r}"
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)
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def test_modify_other_keys_shift_enter_parses_as_alt_enter():
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"""xterm modifyOtherKeys=2 Shift+Enter must parse identically to Alt+Enter."""
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alt_enter = _parse("\x1b\r")
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shift_enter = _parse("\x1b[27;2;13~")
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assert shift_enter == alt_enter
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def test_plain_enter_remains_distinct_from_alt_enter():
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"""Plain Enter must keep emitting a single key (submit), not a two-key
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Alt+Enter tuple — otherwise we would have broken submit."""
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enter = _parse("\r")
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alt_enter = _parse("\x1b\r")
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assert enter != alt_enter
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assert len(enter) == 1
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assert len(alt_enter) == 2
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