swarm-ui: show the notification router's flows and switch built-ins off

frontend/packages/swarm-ui/test/flow-types.test.mjs

@@ -0,0 +1,80 @@
+// The notifications page's tree and wording helpers. Run by `npm test`.
+import assert from "node:assert/strict";
+import { test } from "node:test";
+import {
+  describeNode,
+  treeRows,
+  withBuiltin,
+} from "../src/pages/notifications/FlowTypes.ts";
+
+const flow = {
+  id: "f",
+  name: "f",
+  enabled: true,
+  nodes: [
+    { id: "s", kind: "source", events: ["issues", "issue_assign"] },
+    { id: "m", kind: "match", when: [{ field: "action", equals: "closed" }] },
+    { id: "m2", kind: "match", when: [] },
+    {
+      id: "t",
+      kind: "todo",
+      to: { field: "todo_holders" },
+      op: "clear",
+      key: "forge:{repo}#{number}:",
+      prefix: true,
+      text: "",
+    },
+    {
+      id: "u",
+      kind: "todo",
+      to: { agent: "triage" },
+      op: "upsert",
+      key: "k",
+      prefix: false,
+      text: "look",
+    },
+  ],
+  edges: [
+    { from: "s", to: "m" },
+    { from: "m", to: "t" },
+    { from: "s", to: "m2" },
+    { from: "m2", to: "u" },
+  ],
+};
+
+test("treeRows: each subtree follows its parent, with its depth", () => {
+  assert.deepEqual(
+    treeRows(flow).map((r) => [r.node.id, r.depth]),
+    [
+      ["s", 0],
+      ["m", 1],
+      ["t", 2],
+      ["m2", 1],
+      ["u", 2],
+    ],
+  );
+});
+
+test("treeRows: a cycle ends the walk and a flow with no source is empty", () => {
+  const cyclic = { ...flow, edges: [...flow.edges, { from: "t", to: "s" }] };
+  assert.equal(treeRows(cyclic).length, 5);
+  assert.deepEqual(treeRows({ ...flow, nodes: [] }), []);
+});
+
+test("describeNode: says what each kind does", () => {
+  assert.equal(describeNode(flow.nodes[0]), "forge issues, issue_assign");
+  assert.equal(describeNode(flow.nodes[1]), "action = closed");
+  assert.equal(describeNode(flow.nodes[2]), "match anything");
+  assert.equal(
+    describeNode(flow.nodes[3]),
+    "clear todos forge:{repo}#{number}:* of {todo_holders}",
+  );
+  assert.equal(describeNode(flow.nodes[4]), "todo to triage, key k: look");
+});
+
+test("withBuiltin: switching off adds once, switching on removes", () => {
+  assert.deepEqual(withBuiltin([], "b", false), ["b"]);
+  assert.deepEqual(withBuiltin(["b"], "b", false), ["b"]);
+  assert.deepEqual(withBuiltin(["c"], "a", false), ["a", "c"]);
+  assert.deepEqual(withBuiltin(["a", "b"], "a", true), ["b"]);
+});