Files
openswarm/backend/tests/test_browser_hotpath_waste.py

50 lines
2.0 KiB
Python

"""Hot-path waste removals in the browser sub-agent loop.
Two per-action costs that were pure waste:
1. browser_metrics.metrics_dir() ran os.makedirs() on EVERY tool call.
2. The loop-detection hash serialized a tool's full result (a ~1MB screenshot
or 15KB read) even for tools that are excluded from loop detection, where
detect_loop ignores the hash entirely. These pin both fixes.
"""
import os
import backend.apps.agents.browser.browser_metrics as M
from backend.apps.agents.browser.browser_loop import (
detect_loop,
LOOP_DETECTION_EXCLUDED_TOOLS,
)
def test_metrics_dir_is_cached_makedirs_runs_once(monkeypatch):
M.p_metrics_dir_cache = None
calls = {"n": 0}
real = os.makedirs
def counting(*a, **k):
calls["n"] += 1
return real(*a, **k)
monkeypatch.setattr(os, "makedirs", counting)
d1 = M.metrics_dir()
d2 = M.metrics_dir()
d3 = M.metrics_dir()
assert d1 == d2 == d3
assert calls["n"] == 1, f"makedirs must run once, ran {calls['n']}x"
def test_excluded_tools_never_register_a_loop():
# The invariant the hash-skip relies on: for every excluded tool, even ten identical calls in a row are NOT a loop, so computing/storing the hash for them was dead work. Setting is_loop=False directly is therefore equivalent.
for tool in LOOP_DETECTION_EXCLUDED_TOOLS:
key = (tool, "in", "out")
assert detect_loop([key] * 10, key) is False, f"{tool} wrongly looped"
def test_non_excluded_tool_still_loops_after_threshold():
# Guard the other side: the fix must NOT disable loop detection for the tools that need it (clicks/types/etc.).
key = ("BrowserClick", '{"selector":"#x"}', "clicked")
# below threshold -> not a loop; at/over threshold within the window -> loop
assert detect_loop([], key) is False # 1st occurrence: not yet a wall
assert detect_loop([key], key) is True # 2nd identical (threshold=2): a wall
assert detect_loop([key] * 5, key) is True