fix spawn page link

jsx/src/components/ServerDashboard/ServerDashboard.jsx

@@ -30,7 +30,7 @@ const AccessServerButton = ({ url }) => (
 );
 
 const ServerDashboard = (props) => {
-  let base_url = window.base_url;
+  let base_url = window.base_url || "/";
   // sort methods
   var usernameDesc = (e) => e.sort((a, b) => (a.name > b.name ? 1 : -1)),
     usernameAsc = (e) => e.sort((a, b) => (a.name < b.name ? 1 : -1)),
@@ -277,7 +277,7 @@ const ServerDashboard = (props) => {
               />
               <a
                 href={`${base_url}spawn/${user.name}${
-                  server.name && "/" + server.name
+                  server.name ? "/" + server.name : ""
                 }`}
               >
                 <button

jsx/src/components/ServerDashboard/ServerDashboard.test.js

@@ -98,6 +98,18 @@ test("Renders correctly the status of a single-user server", async () => {
   expect(stop).toBeVisible();
 });
 
+test("Renders spawn page link", async () => {
+  let callbackSpy = mockAsync();
+
+  await act(async () => {
+    render(serverDashboardJsx(callbackSpy));
+  });
+
+  let link = screen.getByText("Spawn Page").closest("a");
+  let url = new URL(link.href);
+  expect(url.pathname).toEqual("/spawn/bar");
+});
+
 test("Invokes the startServer event on button click", async () => {
   let callbackSpy = mockAsync();
 

jsx/src/util/jhapiUtil.js

@@ -1,5 +1,5 @@
 export const jhapiRequest = (endpoint, method, data) => {
-  let base_url = window.base_url,
+  let base_url = window.base_url || "/",
     api_url = `${base_url}hub/api`;
   return fetch(api_url + endpoint, {
     method: method,