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import { assert, assertEquals } from "../src/deps_test.ts";import { killServer, startServer } from "./test.utils.ts";const { test } = Deno;
/** * Test cases */test({  name: "[http] cache should should give the next response instantly",  async fn(): Promise<void> {    const process = await startServer("./examples/cache/app.ts");    const baseUrl = "http://localhost:8000";
    try {      // First request      const perf1 = performance.now();      const r1 = await fetch(baseUrl);      const text_r1 = await r1.text();
      const perf2 = performance.now();
      assertEquals(r1.status, 200);      assertEquals(text_r1, "Hello world");
      // Second request      const perf3 = performance.now();      const r2 = await fetch(baseUrl);      const text_r2 = await r2.text();
      const perf4 = performance.now();
      assertEquals(r2.status, 200);      assertEquals(text_r2, "Hello world");
      assert((perf2 - perf1 - 200) > perf4 - perf3);    } finally {      killServer(process);    }  },});