87 lines
3 KiB
Python
87 lines
3 KiB
Python
#!/usr/bin/env python3
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"""Static regression guard for browser eval CLI output formatting.
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Ensures `cmux browser <surface> eval <script>` prints the evaluated value
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instead of always printing `OK`.
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"""
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from __future__ import annotations
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import subprocess
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from pathlib import Path
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def repo_root() -> Path:
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result = subprocess.run(
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["git", "rev-parse", "--show-toplevel"],
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capture_output=True,
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text=True,
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)
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if result.returncode == 0:
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return Path(result.stdout.strip())
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return Path(__file__).resolve().parents[1]
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def extract_block(source: str, signature: str) -> str:
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start = source.find(signature)
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if start < 0:
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raise ValueError(f"Missing signature: {signature}")
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brace_start = source.find("{", start)
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if brace_start < 0:
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raise ValueError(f"Missing opening brace for: {signature}")
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depth = 0
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for idx in range(brace_start, len(source)):
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char = source[idx]
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if char == "{":
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depth += 1
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elif char == "}":
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depth -= 1
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if depth == 0:
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return source[brace_start : idx + 1]
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raise ValueError(f"Unbalanced braces for: {signature}")
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def main() -> int:
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root = repo_root()
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failures: list[str] = []
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cli_path = root / "CLI" / "cmux.swift"
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cli_source = cli_path.read_text(encoding="utf-8")
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browser_block = extract_block(cli_source, "private func runBrowserCommand(")
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if "func displayBrowserValue(_ value: Any) -> String" not in browser_block:
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failures.append("runBrowserCommand() is missing displayBrowserValue() helper")
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else:
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value_block = extract_block(browser_block, "func displayBrowserValue(_ value: Any) -> String")
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required_guards = [
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"if value is NSNull",
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"if let string = value as? String",
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"if let bool = value as? Bool",
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"if let number = value as? NSNumber",
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]
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for guard in required_guards:
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if guard not in value_block:
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failures.append(f"displayBrowserValue() no longer handles: {guard}")
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eval_block = extract_block(browser_block, 'if subcommand == "eval"')
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if 'let payload = try client.sendV2(method: "browser.eval"' not in eval_block:
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failures.append("browser eval path no longer calls browser.eval v2 method")
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if 'if let value = payload["value"]' not in eval_block:
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failures.append("browser eval path no longer reads payload value")
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if "fallback = displayBrowserValue(value)" not in eval_block:
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failures.append("browser eval path no longer formats payload value for CLI output")
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if 'output(payload, fallback: "OK")' in eval_block:
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failures.append("browser eval path regressed to unconditional OK output")
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if failures:
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print("FAIL: browser eval CLI output regression guard failed")
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for item in failures:
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print(f" - {item}")
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return 1
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print("PASS: browser eval CLI output regression guard is in place")
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return 0
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if __name__ == "__main__":
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raise SystemExit(main())
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