chore: more explicit logic in test

application.test.ts

@@ -1116,7 +1116,10 @@ Deno.test({
     const { signal } = controller;
     const p = app.listen({ signal });
     controller.abort();
-    assertRejects(async () => await p, "aborted prematurely before 'listen' event");
+    assertRejects(
+      async () => await p,
+      "aborted prematurely before 'listen' event",
+    );
     teardown();
   },
 });
@@ -1130,10 +1133,27 @@ Deno.test({
       ctx.response.body = "hello world";
     });
     const { signal } = controller;
-    app.addEventListener("listen", () => controller.abort())
     const p = app.listen({ signal });
-    await p;
-    teardown();
+    app.addEventListener("listen", async () => controller.abort());
+    const GRACEFUL_TIME = 1000;
+    let timer: number | undefined;
+    const raceResult = await Promise.race([
+      new Promise(async (resolve) => {
+        await p;
+        clearTimeout(timer);
+        resolve("resolved cleanly");
+      }),
+      new Promise((resolve) =>
+        timer = setTimeout(
+          () => resolve("likely forever pending"),
+          GRACEFUL_TIME,
+        )
+      ),
+    ]);
+    assert(
+      raceResult === "resolved cleanly",
+      `'listen promise' should resolve before ${GRACEFUL_TIME} ms`,
+    );
   },
 });
 

http_server_native.ts

@@ -81,7 +81,9 @@ export class Server<AS extends State = Record<string, any>>
     const { promise, resolve } = createPromiseWithResolvers<Listener>();
     if (signal?.aborted) {
       // if user somehow aborted before `listen` is invoked, we throw
-      return Promise.reject(new Error("aborted prematurely before 'listen' event"));
+      return Promise.reject(
+        new Error("aborted prematurely before 'listen' event"),
+      );
     }
     this.#stream = new ReadableStream<NativeRequest>({
       start: (controller) => {
@@ -102,7 +104,9 @@ export class Server<AS extends State = Record<string, any>>
         });
         // closinng stream, so that the Application listen promise can resolve itself
         // https://developer.mozilla.org/en-US/docs/Web/API/ReadableStreamDefaultController/close
-        signal?.addEventListener("abort", () => controller.close(), { once: true });
+        signal?.addEventListener("abort", () => controller.close(), {
+          once: true,
+        });
       },
     });