update

tests/test_metric_presenter.py

@@ -0,0 +1,68 @@
+from __future__ import annotations
+
+import subprocess
+from pathlib import Path
+
+
+REPO_ROOT = Path(__file__).resolve().parents[1]
+
+
+def _run_node(script: str) -> str:
+    """Execute a short Node.js script and return stdout."""
+    completed = subprocess.run(
+        ["node", "-e", script],
+        cwd=REPO_ROOT,
+        capture_output=True,
+        text=True,
+        encoding="utf-8",
+        check=True,
+    )
+    return completed.stdout.strip()
+
+
+def test_metric_presenter_applies_thresholds_and_noise_direction() -> None:
+    """MetricPresenter should centralize thresholds and inverse noise semantics."""
+    metric_js = (REPO_ROOT / "webapp" / "static" / "js" / "metric_presenter.js").as_posix()
+    script = f"""
+const fs = require("fs");
+const vm = require("vm");
+const code = fs.readFileSync("{metric_js}", "utf8");
+const sandbox = {{ window: {{}}, console }};
+vm.runInNewContext(code, sandbox);
+const p = sandbox.window.MetricPresenter;
+const result = {{
+  faith085: p.scoreClass("faithfulness", 0.85),
+  faith070: p.scoreClass("faithfulness", 0.70),
+  faith064: p.scoreClass("faithfulness", 0.64),
+  noise010: p.scoreClass("noise_sensitivity", 0.10),
+  noise030: p.scoreClass("noise_sensitivity", 0.30),
+  noise050: p.scoreClass("noise_sensitivity", 0.50),
+  desc: p.describeMetric("faithfulness"),
+  noiseDesc: p.describeMetric("noise_sensitivity"),
+  noiseBin: p.binColor("noise_sensitivity", 0.0),
+  faithBin: p.binColor("faithfulness", 0.8)
+}};
+console.log(JSON.stringify(result));
+"""
+    output = _run_node(script)
+    assert '"faith085":"good"' in output
+    assert '"faith070":"warn"' in output
+    assert '"faith064":"bad"' in output
+    assert '"noise010":"good"' in output
+    assert '"noise030":"warn"' in output
+    assert '"noise050":"bad"' in output
+    assert '"desc":"' in output
+    assert '"noiseDesc":"' in output
+    assert '"noiseBin":"#16a34a"' in output
+    assert '"faithBin":"#16a34a"' in output
+
+
+def test_report_and_index_load_metric_presenter_helper() -> None:
+    """The report page should use the shared helper for card descriptions and colors."""
+    index_html = (REPO_ROOT / "webapp" / "static" / "index.html").read_text(encoding="utf-8")
+    report_js = (REPO_ROOT / "webapp" / "static" / "js" / "report.js").read_text(encoding="utf-8")
+    app_js = (REPO_ROOT / "webapp" / "static" / "js" / "app.js").read_text(encoding="utf-8")
+
+    assert "js/metric_presenter.js" in index_html
+    assert "MetricPresenter.describeMetric" in report_js
+    assert "MetricPresenter.scoreClass" in app_js