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2026-07-12 15:55:18 +05:30
commit ee98026cc5
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+import { test, expect, beforeEach } from "bun:test";
+import { Window } from "happy-dom";
+import { NAV_RUNTIME } from "../src/nav-runtime.ts";
+
+let win: any;
+let fetchCalls: { url: string; opts: any }[];
+let nextHtml: string;
+
+function install(bodyHtml: string): void {
+  win = new Window({ url: "https://example.test/" });
+  win.document.body.innerHTML = bodyHtml;
+  fetchCalls = [];
+  nextHtml = "";
+  const g = globalThis as any;
+  g.window = win;
+  g.document = win.document;
+  g.history = win.history;
+  g.location = win.location;
+  g.DOMParser = win.DOMParser;
+  g.CustomEvent = win.CustomEvent;
+  g.fetch = win.fetch = (url: string, opts: any) => {
+    fetchCalls.push({ url, opts });
+    return Promise.resolve({
+      redirected: false,
+      url,
+      headers: {
+        get: (k: string) =>
+          k.toLowerCase() === "content-type" ? "text/html; charset=utf-8" : null,
+      },
+      text: () => Promise.resolve(nextHtml),
+    });
+  };
+  (0, eval)(NAV_RUNTIME);
+}
+
+const flush = () => new Promise((r) => setTimeout(r, 0));
+
+beforeEach(() => {
+  const g = globalThis as any;
+  for (const k of [
+    "window",
+    "document",
+    "history",
+    "location",
+    "DOMParser",
+    "CustomEvent",
+    "fetch",
+  ]) {
+    delete g[k];
+  }
+});
+
+test("intercepts an internal link click and swaps #app in place", async () => {
+  install(`<div id="app"><h1>Home</h1><a href="/about" id="lnk">About</a></div>`);
+  nextHtml =
+    `<!doctype html><html><head><title>About</title></head>` +
+    `<body><div id="app"><h1>About page</h1></div></body></html>`;
+  win.document.getElementById("lnk").click();
+  await flush();
+  expect(fetchCalls.length).toBe(1);
+  expect(fetchCalls[0]!.url).toContain("/about");
+  expect(fetchCalls[0]!.opts.headers["x-wrnexus-nav"]).toBe("1");
+  expect(win.document.getElementById("app").innerHTML).toContain("About page");
+  expect(win.document.title).toBe("About");
+});
+
+test("ignores cross-origin links (full navigation)", async () => {
+  install(`<div id="app"><a href="https://other.test/x" id="lnk">x</a></div>`);
+  win.document.getElementById("lnk").click();
+  await flush();
+  expect(fetchCalls.length).toBe(0);
+});
+
+test("ignores modified clicks so new-tab still works", async () => {
+  install(`<div id="app"><a href="/about" id="lnk">x</a></div>`);
+  win.document
+    .getElementById("lnk")
+    .dispatchEvent(
+      new win.MouseEvent("click", { bubbles: true, cancelable: true, button: 0, metaKey: true }),
+    );
+  await flush();
+  expect(fetchCalls.length).toBe(0);
+});
+
+test("exposes programmatic navigation", async () => {
+  install(`<div id="app"><h1>Home</h1></div>`);
+  nextHtml = `<html><head><title>Dash</title></head><body><div id="app"><h1>Dashboard</h1></div></body></html>`;
+  expect(typeof win.__wrnexusNavigate).toBe("function");
+  win.__wrnexusNavigate("/dashboard");
+  await flush();
+  expect(fetchCalls.length).toBe(1);
+  expect(win.document.getElementById("app").innerHTML).toContain("Dashboard");
+});