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hermes-agent/tests/test_tool_fixation_detector.py

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"""Tests for tool fixation detection."""
import pytest
import sys
from pathlib import Path
sys.path.insert(0, str(Path(__file__).resolve().parent.parent))
from agent.tool_fixation_detector import ToolFixationDetector, get_fixation_detector
class TestFixationDetection:
def test_no_fixation_below_threshold(self):
d = ToolFixationDetector(threshold=5)
for i in range(4):
assert d.record("execute_code") is None
def test_fixation_at_threshold(self):
d = ToolFixationDetector(threshold=3)
d.record("execute_code")
d.record("execute_code")
nudge = d.record("execute_code")
assert nudge is not None
assert "execute_code" in nudge
assert "3 times" in nudge
def test_fixation_above_threshold(self):
d = ToolFixationDetector(threshold=3)
d.record("execute_code")
d.record("execute_code")
d.record("execute_code") # threshold hit
nudge = d.record("execute_code") # still nudging
assert nudge is not None
def test_streak_resets_on_different_tool(self):
d = ToolFixationDetector(threshold=3)
d.record("execute_code")
d.record("execute_code")
d.record("terminal") # breaks streak
assert d._streak_count == 1
assert d._current_streak == "terminal"
def test_nudges_sent_counter(self):
d = ToolFixationDetector(threshold=2)
d.record("a")
d.record("a") # nudge 1
d.record("a") # nudge 2
assert d.nudges_sent == 2
def test_events_recorded(self):
d = ToolFixationDetector(threshold=2)
d.record("x")
d.record("x")
assert len(d.events) == 1
assert d.events[0].tool_name == "x"
assert d.events[0].streak_length == 2
def test_report(self):
d = ToolFixationDetector(threshold=2)
d.record("x")
d.record("x")
report = d.format_report()
assert "x" in report
def test_reset(self):
d = ToolFixationDetector(threshold=2)
d.record("x")
d.record("x")
d.reset()
assert d._streak_count == 0
assert d._current_streak == ""
def test_singleton(self):
d1 = get_fixation_detector()
d2 = get_fixation_detector()
assert d1 is d2