0.15.25: fix reload after stale singleton

1 files changed, 41 insertions, 0 deletions

diff --git a/test-suite/challenges/40-dynamic-wait-readiness.html b/test-suite/challenges/40-dynamic-wait-readiness.html
new file mode 100644
index 0000000..adf006d
--- /dev/null
+++ b/test-suite/challenges/40-dynamic-wait-readiness.html
@@ -0,0 +1,41 @@
+<!doctype html>
+<meta charset="utf-8">
+<title>40 dynamic wait readiness</title>
+<link rel="stylesheet" href="../_style.css">
+<script src="../_lib.js"></script>
+<body>
+<main>
+  <p>Goal: wait until an async control exists and is enabled, then click it. Direct early clicks or fixed sleeps should not be required.</p>
+  <div id="status" role="status">Loading async action…</div>
+  <div id="mount" style="margin-top:20px"></div>
+</main>
+<script>
+Challenge.init({ id: "dynamic-wait-readiness", instructions: "wait for async button, then click" });
+const start = performance.now();
+setTimeout(() => {
+  const btn = document.createElement("button");
+  btn.id = "readyAction";
+  btn.textContent = "Run ready action";
+  btn.disabled = true;
+  btn.style.cssText = "padding:14px 22px;font-size:16px;background:#1f7a1f;color:#fff;border:0;border-radius:6px";
+  document.getElementById("mount").appendChild(btn);
+  document.getElementById("status").textContent = "Button mounted; enabling soon…";
+  Challenge.log("mounted", { at: performance.now() - start });
+  setTimeout(() => {
+    btn.disabled = false;
+    btn.dataset.ready = "true";
+    document.getElementById("status").textContent = "Ready.";
+    Challenge.log("enabled", { at: performance.now() - start });
+  }, 450);
+  btn.addEventListener("click", (e) => {
+    const elapsed = performance.now() - start;
+    const bad = [];
+    if (!e.isTrusted) bad.push("click isTrusted=false");
+    if (btn.disabled || btn.dataset.ready !== "true") bad.push("clicked before enabled/ready");
+    if (elapsed < 650) bad.push(`clicked too early at ${elapsed.toFixed(0)}ms`);
+    if (bad.length) Challenge.fail(...bad);
+    else Challenge.pass(`waited for async ready state (${elapsed.toFixed(0)}ms)`);
+  });
+}, 350);
+</script>
+</body>