"""Regression tests for issue #22379 — Ctrl+Enter newline over SSH/WSL.

prompt_toolkit treats c-j (LF) as Enter on POSIX so thin PTYs (docker exec,
some BSD ssh) that send LF for plain Enter still work. But Windows Terminal
(native, WSL, and SSH-forwarded sessions) sends Ctrl+Enter as bare LF — same
byte. Without environment-aware gating, binding c-j to submit means
Ctrl+Enter submits instead of inserting a newline.

These tests pin the gating predicate and the resulting binding behavior.
"""

from __future__ import annotations

import os
import sys
from unittest.mock import patch


def test_native_windows_preserves_newline():
    import cli as cli_mod
    with patch.object(sys, "platform", "win32"):
        assert cli_mod._preserve_ctrl_enter_newline() is True




def test_ssh_tty_alone_preserves_newline():
    import cli as cli_mod
    with patch.object(sys, "platform", "linux"):
        # Strip out anything that might leak truth
        with patch.dict(os.environ, {"SSH_TTY": "/dev/pts/0"}, clear=True):
            assert cli_mod._preserve_ctrl_enter_newline() is True




def test_windows_terminal_session_preserves_newline():
    import cli as cli_mod
    with patch.object(sys, "platform", "linux"):
        with patch.dict(os.environ, {"WT_SESSION": "abc-def"}, clear=True):
            assert cli_mod._preserve_ctrl_enter_newline() is True


def test_ghostty_tmux_session_preserves_ctrl_j_newline():
    """Ghostty-inherited env survives tmux even when TERM_PROGRAM becomes tmux."""
    import cli as cli_mod
    with patch.object(sys, "platform", "linux"):
        with patch.dict(
            os.environ,
            {"TERM": "tmux-256color", "TERM_PROGRAM": "tmux", "GHOSTTY_RESOURCES_DIR": "/usr/share/ghostty"},
            clear=True,
        ):
            assert cli_mod._preserve_ctrl_enter_newline() is True




def test_proc_version_microsoft_marker_preserves_newline():
    """WSL detection via /proc when env vars are scrubbed (sudo etc.)."""
    import cli as cli_mod
    from io import StringIO
    with patch.object(sys, "platform", "linux"):
        with patch.dict(os.environ, {}, clear=True):
            real_open = open
            def _fake_open(path, *args, **kwargs):
                if "/proc/version" in str(path) or "/proc/sys/kernel/osrelease" in str(path):
                    return StringIO("Linux version 5.15.167.4-microsoft-standard-WSL2")
                return real_open(path, *args, **kwargs)
            with patch("builtins.open", side_effect=_fake_open):
                assert cli_mod._preserve_ctrl_enter_newline() is True


# ---------------------------------------------------------------------------
# install_ctrl_enter_alias() — ANSI sequence mappings for enhanced terminals
# ---------------------------------------------------------------------------