Aura/crates/aura-cli/tests/viewer_tooltip.mjs

// Headless tooltip guard for the `aura graph` viewer (graph-viewer.js).
//
// Property protected: the INFO maps genDot populates (INFO.B for a node body,
// INFO.C for an expanded composite's cluster frame, INFO.P for a port) and the
// md() markdown-to-HTML step that turns an INFO entry into the #tip div's
// innerHTML all keep their CURRENT exact string shape. Before this guard the DOT
// half of the viewer (normalizeModel/genDot output) was covered by the sibling
// viewer_*.mjs suite, but the INFO population (addInfo, the composite-cluster
// caption) and md() were asserted by no test — a silent wording/markup change
// there would reach the browser tooltip undetected.
//
// It loads the real viewer module and drives the exported pure `genDot` (for
// INFO.B/INFO.C/INFO.P) and `md` (for the markdown step). `node` is REQUIRED: a
// skipped guard is not a guard.

import { createRequire } from "node:module";
import { fileURLToPath } from "node:url";
import { dirname, join } from "node:path";

const require = createRequire(import.meta.url);
const here = dirname(fileURLToPath(import.meta.url));

// One composite ("sub", holding a primitive "double") + one root-level
// primitive ("gauge"), wired as: root.nodes = { "0": <sub composite ref>, "1":
// <gauge primitive> }. Small enough that every INFO entry below is traceable by
// hand; big enough to cover collapsed-composite, expanded-composite, and
// primitive INFO shapes in one fixture.
const model = {
  root: {
    nodes: {
      "0": { comp: "sub" },
      "1": { prim: {
        name: "g", type: "Mul2", role: "node",
        params: [["k", "f64"]],
        bound: [],
        ins: [["f64", "any", "a"]],
        outs: [["y", "f64"]],
      } },
    },
    edges: [],
  },
  composites: {
    sub: {
      inputs: [["f64", "any", "x"]],
      outputs: [["y", "f64"]],
      nodes: {
        "0": { prim: {
          name: "double", type: "Mul2", role: "node",
          params: [], bound: [],
          ins: [["f64", "any", "a"]],
          outs: [["y", "f64"]],
        } },
      },
      edges: [],
    },
  },
};

// COMP (used by genDot to resolve a composite reference by name) is captured at
// require time from window.AURA_MODEL — mirrors the browser bootstrap and the
// sibling viewer_nested_depth.mjs guard.
global.window = { AURA_MODEL: model };
const { normalizeModel, genDot, md } = require(join(here, "..", "assets", "graph-viewer.js"));
const ROOT = normalizeModel(model).root;

const fail = (msg) => { console.error(msg); process.exit(1); };
const expect = (actual, expected, msg) => {
  if (actual !== expected) {
    fail(`${msg}\n--- expected ---\n${JSON.stringify(expected)}\n--- actual ---\n${JSON.stringify(actual)}`);
  }
};

// --- Property 1: collapsed composite — INFO.B carries type/role + params line.
{
  const { info } = genDot(ROOT, "root", new Set(), false);
  expect(
    info.B["n0"],
    "**sub** <span class='dim'>· composite</span>\nparams: <span class='dim'>none</span>",
    "collapsed composite INFO.B[n0] shape changed"
  );
}

// --- Property 2: expanded composite — INFO.C carries the cluster caption.
{
  const { info } = genDot(ROOT, "root", new Set(["n0"]), false);
  expect(
    info.C["clust_n0"],
    "**sub** <span class='dim'>· composite · click frame to collapse</span>",
    "expanded composite INFO.C[clust_n0] shape changed"
  );
}

// --- Property 3: primitive node — INFO.B body line + INFO.P port entries.
{
  const { info } = genDot(ROOT, "root", new Set(), false);
  expect(
    info.B["n1"],
    "**Mul2** <span class='dim'>· node</span>\nparams: `k:f64`",
    "primitive INFO.B[n1] shape changed"
  );
  expect(info.P["P_n1_i0"], "**a** · `f64`", "primitive input port INFO.P[P_n1_i0] shape changed");
  expect(info.P["P_n1_o0"], "**y** · `f64`", "primitive output port INFO.P[P_n1_o0] shape changed");
}

// --- Property 4: md() — the markdown-to-HTML step the #tip div consumes.
{
  expect(md("**x**\n`y`"), "<b>x</b><br><code>y</code>", "md() markdown conversion changed");
  // End-to-end: md() applied to the real INFO.B[n1] string from Property 3 —
  // bold the type, wrap the param signature in <code>, turn the newline into
  // <br>, and leave the hand-authored <span class='dim'> markup untouched
  // (md() only rewrites **, `` ` ``, and \n — it does not touch raw HTML).
  const { info } = genDot(ROOT, "root", new Set(), false);
  expect(
    md(info.B["n1"]),
    "<b>Mul2</b> <span class='dim'>· node</span><br>params: <code>k:f64</code>",
    "md() applied to a real INFO.B entry changed shape"
  );
}

console.log("OK — INFO.B/INFO.C/INFO.P tooltip shapes and md() conversion pinned.");
process.exit(0);