fix: render live V2X vehicles in Cesium preview

scripts/test-v2x-preview-server.js

@@ -30,6 +30,10 @@ async function request(port, pathName, options = {}) {
   assert.equal(isProxyPath("/package/manifest.json"), false);
   assert.equal(upstreamPath("/api/facilities/api/sys/login?x=1"), "/facilities/api/sys/login?x=1");
   assert.equal(upstreamPath("/websocket/network/ws/network/signal"), "/network/ws/network/signal");
+  // An upstream base path (deployments front the API as /dashboardApi) is kept.
+  assert.equal(upstreamPath("/api/facilities/api/sys/login", "/dashboardApi"), "/dashboardApi/facilities/api/sys/login");
+  assert.equal(upstreamPath("/websocket/network/ws/x", "/dashboardWebsocket/"), "/dashboardWebsocket/network/ws/x");
+  assert.equal(upstreamPath("/api/x", "/"), "/x");
 
   const upstream = http.createServer((req, res) => {
     let body = "";
@@ -59,6 +63,28 @@ async function request(port, pathName, options = {}) {
   } finally {
     await Promise.all([new Promise((resolve) => preview.close(resolve)), new Promise((resolve) => upstream.close(resolve))]);
   }
+
+  // Same upstream, but reached through a prefixed base path.
+  const prefixedUpstream = http.createServer((req, res) => {
+    res.setHeader("Content-Type", "application/json");
+    res.end(JSON.stringify({ path: req.url }));
+  });
+  const prefixedPort = await listen(prefixedUpstream);
+  const prefixedPreview = createV2xPreviewServer({
+    root: path.join(__dirname, "..", "outputs", "fengshu-er-road"),
+    upstream: `http://127.0.0.1:${prefixedPort}/dashboardApi`,
+    wsUpstream: `http://127.0.0.1:${prefixedPort}/dashboardWebsocket`,
+  });
+  const prefixedPreviewPort = await listen(prefixedPreview);
+  try {
+    const proxied = await request(prefixedPreviewPort, "/api/facilities/api/sys/login");
+    assert.deepEqual(JSON.parse(proxied.body), { path: "/dashboardApi/facilities/api/sys/login" });
+  } finally {
+    await Promise.all([
+      new Promise((resolve) => prefixedPreview.close(resolve)),
+      new Promise((resolve) => prefixedUpstream.close(resolve)),
+    ]);
+  }
   console.log("V2X preview server tests passed.");
 })().catch((error) => {
   console.error(error);