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_bench_ram_regression.py

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+"""OPS-11 regression guard: small-N RAM bench stays under threshold.
+
+Plan 05-05 (D5-08) — CI-runnable guard for bench/memory_footprint.py. The
+large-N target (RSS <= 300 MB at N=10k warm on 16+ GB machine) runs
+ad-hoc from the published bench report; this test exercises the small-N path
+(N=100-500 with a 64d embedding) so CI catches harness drift without
+spinning up a 10k-record LanceDB table.
+
+See:
+- bench/memory_footprint.py — the harness under guard
+- internal architecture spec
+  Task 1 for the behavior contract
+"""
+from __future__ import annotations
+
+from pathlib import Path
+
+import pytest
+
+
+def test_memory_footprint_small_n_under_threshold(tmp_path: Path):
+    """Smoke: small-N run populates rss_mb_peak under a generous ceiling.
+
+    The 300 MB large-N target is NOT asserted here — a fresh LanceDB +
+    NetworkX graph at N=500 already allocates more than that on macOS
+    when bge-m3 is loaded via embed import. This guard only asserts that
+    the harness returns a plausible positive reading and respects the
+    JSON schema the BENCH_REPORT consumes.
+    """
+    from bench.memory_footprint import run_memory_footprint
+
+    out = run_memory_footprint(n=100, store_path=tmp_path / "store", dim=64)
+
+    # Shape: every key promised in the module docstring is present.
+    assert "n" in out
+    assert "rss_mb_peak" in out
+    assert "threshold_mb" in out
+    assert "passed" in out
+    assert "platform" in out
+
+    # Values: rss is a real positive reading; threshold is the design target.
+    assert out["n"] == 100
+    assert isinstance(out["rss_mb_peak"], float)
+    assert out["rss_mb_peak"] > 0.0
+    assert out["threshold_mb"] == 300.0
+
+    # Generous outer bound — catches a clearly broken reading (e.g. reporting
+    # nanoseconds as MB). The tight 300 MB fence belongs to the large-N run.
+    assert out["rss_mb_peak"] < 4000.0, (
+        f"small-N RSS {out['rss_mb_peak']} MB suspicious"
+    )
+
+
+def test_memory_footprint_main_exits_int(tmp_path: Path):
+    """CLI entry-point returns 0 or 1 (bench CI contract)."""
+    from bench import memory_footprint
+
+    code = memory_footprint.main(argv=["--n", "50", "--dim", "32"])
+    assert code in (0, 1)
+
+
+def test_memory_footprint_platform_units_documented(tmp_path: Path):
+    """Harness records the platform it measured on — macOS bytes vs Linux KB
+    is an correctness trap; the JSON output must carry the marker so
+    downstream reports can reproduce the unit conversion.
+    """
+    from bench.memory_footprint import run_memory_footprint
+
+    out = run_memory_footprint(n=50, store_path=tmp_path / "store2", dim=32)
+    assert out["platform"] in ("darwin", "linux", "win32")