notify router: deliveries log, dry-run hit counts, api and page

frontend/packages/swarm-ui/test/router-live.test.mjs

@@ -0,0 +1,65 @@
+// The notifications page's helpers for the router's deliveries and dry run.
+// Run by `npm test`.
+import assert from "node:assert/strict";
+import { test } from "node:test";
+import {
+  hitsOf,
+  issueRef,
+  outcomeText,
+  unavailableText,
+} from "../src/pages/notifications/RouterLive.ts";
+
+const dry = {
+  events: 50,
+  flows: [
+    {
+      flow: "assigned",
+      nodes: [
+        { node: "source", hits: 49 },
+        { node: "sink", hits: 0 },
+      ],
+    },
+  ],
+};
+
+test("hitsOf maps a flow's node ids to their counts, zero included", () => {
+  const hits = hitsOf(dry, "assigned");
+  assert.equal(hits.get("source"), 49);
+  assert.equal(hits.get("sink"), 0);
+});
+
+test("hitsOf has nothing for a flow the dry run left out, or no dry run", () => {
+  assert.equal(hitsOf(dry, "closed"), undefined);
+  assert.equal(hitsOf(null, "assigned"), undefined);
+});
+
+test("a delivery reads as its issue and its outcome", () => {
+  assert.equal(issueRef({ repo: "o/r", number: 9 }), "o/r#9");
+  assert.equal(
+    outcomeText({ ok: true, detail: "upsert forge:o/r#9:assignment" }),
+    "ok: upsert forge:o/r#9:assignment",
+  );
+  assert.equal(outcomeText({ ok: true, detail: "" }), "ok");
+  assert.equal(
+    outcomeText({ ok: false, detail: "the forge said no" }),
+    "error: the forge said no",
+  );
+});
+
+test("a 503 reads as not available, any other failure as failed to load", () => {
+  assert.equal(
+    unavailableText("the deliveries log", {
+      status: 503,
+      detail: "the notification router does not answer this",
+    }),
+    "the deliveries log not available: the notification router does not answer this",
+  );
+  assert.equal(
+    unavailableText("hit counts", { status: 502, detail: "bad" }),
+    "hit counts failed to load: bad",
+  );
+  assert.equal(
+    unavailableText("hit counts", { status: 503 }),
+    "hit counts not available: no reason given",
+  );
+});