wehub-resource-sync
50 lines
1.9 KiB
Python
50 lines
1.9 KiB
Python
"""Regression guard: the React TUI exit handler must write a trailing newline.
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When the TUI process exits, Ink leaves the cursor at the end of the last
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rendered line. Without a newline the shell prompt appears concatenated with
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the TUI output, which is visually broken. This test reads the TypeScript
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entry-point source and asserts that the exit-cleanup write includes '\\n'
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alongside the cursor-show escape sequence.
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"""
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from __future__ import annotations
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import re
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from pathlib import Path
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def _frontend_index() -> Path:
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repo_root = Path(__file__).resolve().parents[2]
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return repo_root / "frontend" / "terminal" / "src" / "index.tsx"
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def test_tui_exit_handler_writes_newline() -> None:
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"""restoreTerminal must emit \\x1B[?25h\\n so the shell prompt starts on a new line.
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Regression for: TUI exit leaves shell prompt concatenated with last TUI line.
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"""
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source = _frontend_index().read_text(encoding="utf-8")
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# Locate the cleanup function body and verify it includes a trailing \\n.
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# The expected write is: process.stdout.write('\\x1B[?25h\\n')
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pattern = re.compile(
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r"process\.stdout\.write\(['\"].*\\x1B\[\?25h\\n.*['\"]\)",
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re.MULTILINE,
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)
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assert pattern.search(source), (
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"The TUI exit handler must call process.stdout.write with a trailing '\\n' "
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"so the shell prompt starts on a fresh line after the TUI exits. "
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f"Check {_frontend_index()} and ensure the cursor-restore write ends with \\n."
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)
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def test_tui_exit_handler_registered_for_all_signals() -> None:
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"""restoreTerminal must be attached to 'exit', SIGINT, and SIGTERM."""
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source = _frontend_index().read_text(encoding="utf-8")
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for signal in ("exit", "SIGINT", "SIGTERM"):
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assert f"process.on('{signal}'" in source, (
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f"The TUI exit cleanup must be registered for '{signal}'. "
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f"Check {_frontend_index()}."
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)
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