Brian Krabach
81 lines
2.5 KiB
Python
81 lines
2.5 KiB
Python
#!/usr/bin/env python3
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"""
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Bell Flag Spike — run ONCE manually to determine tmux bell flag read behavior.
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Usage:
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python3 coordinator/spike_bell_flag.py
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What this tests:
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Does `tmux display-message -p "#{window_bell_flag}"` clear the flag when
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read, or does the flag persist until the window is visited in tmux?
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Expected result (almost certain): the flag persists. Reading it does NOT clear
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it. The flag is cleared only when the window is marked active inside tmux.
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"""
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import subprocess
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import time
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SESSION = "bell-spike-test"
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def run(cmd: list[str]) -> str:
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result = subprocess.run(cmd, capture_output=True, text=True)
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return result.stdout.strip()
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def main() -> None:
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# 1. Create a test session
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print("Creating test session...")
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subprocess.run(
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["tmux", "new-session", "-d", "-s", SESSION, "-x", "80", "-y", "24"], check=True
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)
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time.sleep(0.2)
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# 2. Send a bell to the session
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print("Sending bell to session...")
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subprocess.run(
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["tmux", "send-keys", "-t", SESSION, "printf '\\a'", "Enter"], check=True
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)
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time.sleep(1.0)
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# 3. Read the bell flag (first read)
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flag_read1 = run(
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["tmux", "display-message", "-t", SESSION, "-p", "#{window_bell_flag}"]
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)
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print(f"Bell flag (1st read): '{flag_read1}'")
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# 4. Read the bell flag immediately again (second read)
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flag_read2 = run(
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["tmux", "display-message", "-t", SESSION, "-p", "#{window_bell_flag}"]
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)
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print(f"Bell flag (2nd read): '{flag_read2}'")
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# 5. Cleanup
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subprocess.run(["tmux", "kill-session", "-t", SESSION])
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# 6. Report
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print()
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if flag_read1 == "1" and flag_read2 == "1":
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print("FINDING: Reading does NOT clear the flag. Both reads show '1'.")
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print(
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"Implementation: use in-memory _bell_seen dict to detect 0→1 transitions."
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)
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elif flag_read1 == "1" and flag_read2 == "0":
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print(
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"FINDING: Reading CLEARS the flag. First read shows '1', second shows '0'."
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)
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print("Implementation: each '1' is a new bell — no transition tracking needed.")
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elif flag_read1 == "0":
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print("WARNING: Bell flag not set after printf '\\a'. Try running manually:")
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print(f" tmux send-keys -t {SESSION} \"printf '\\\\a'\" Enter")
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print(
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" Then check: tmux display-message -t bell-spike-test -p '#{window_bell_flag}'"
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)
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else:
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print(f"UNEXPECTED: read1={flag_read1!r}, read2={flag_read2!r}")
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if __name__ == "__main__":
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main()
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