100% Coverage

tests/unit/llm/test_metrics_holder.py

@@ -0,0 +1,18 @@
+"""Coverage for roboco.llm.metrics — singleton ToonMetrics holder."""
+
+from __future__ import annotations
+
+from roboco.llm.metrics import _MetricsHolder, get_toon_metrics
+
+
+def test_get_toon_metrics_returns_singleton() -> None:
+    _MetricsHolder.instance = None
+    a = get_toon_metrics()
+    b = get_toon_metrics()
+    assert a is b
+
+
+def test_get_toon_metrics_creates_when_unset() -> None:
+    _MetricsHolder.instance = None
+    metrics = get_toon_metrics()
+    assert metrics is not None