Initial release: iai-mcp v0.1.0

Co-Authored-By: Claude <noreply@anthropic.com>
Co-Authored-By: XNLLLLH <XNLLLLH@users.noreply.github.com>

tests/test_trajectory_m4_live.py

@@ -0,0 +1,51 @@
+"""Plan 03-02 Task 2 Step 6: M4 profile-variance LIVE tests."""
+from __future__ import annotations
+
+import pytest
+
+from iai_mcp.events import write_event
+from iai_mcp.store import MemoryStore
+from iai_mcp.trajectory import m4_profile_variance_live
+
+
+def test_m4_zero_on_empty_store(tmp_path):
+    store = MemoryStore(path=tmp_path)
+    assert m4_profile_variance_live(store) == 0.0
+
+
+def test_m4_low_variance_on_stable_writes(tmp_path):
+    """20 writes that converge near 0.5 -> low variance."""
+    store = MemoryStore(path=tmp_path)
+    for i in range(20):
+        # Convergent series 0.49 -> 0.50 -> 0.51 ...
+        new = 0.5 + (i % 3 - 1) * 0.01
+        write_event(
+            store, kind="profile_updated",
+            data={"knob": "interest_boost", "old": 0.5, "new": new},
+            severity="info",
+        )
+    val = m4_profile_variance_live(store, n_updates=20)
+    assert val < 0.1
+
+
+def test_m4_skips_non_numeric_knobs(tmp_path):
+    """Bool/enum knobs do not contribute variance (skipped)."""
+    store = MemoryStore(path=tmp_path)
+    write_event(
+        store, kind="profile_updated",
+        data={"knob": "masking_off", "old": True, "new": False},
+        severity="info",
+    )
+    write_event(
+        store, kind="profile_updated",
+        data={"knob": "interest_boost", "old": 0.0, "new": 1.0},
+        severity="info",
+    )
+    write_event(
+        store, kind="profile_updated",
+        data={"knob": "interest_boost", "old": 1.0, "new": 0.0},
+        severity="info",
+    )
+    val = m4_profile_variance_live(store)
+    # Only interest_boost contributes; values [1.0, 0.0]; variance = 0.25.
+    assert val == pytest.approx(0.25, abs=1e-6)