Leaking resources from inbound HTTP connections in tests

error: Leaking resources:
  - An inbound HTTP connection (rid 7) was accepted before the test started, but was closed during the test. Do not close resources in a test that were not created during that test.
  - An inbound HTTP connection (rid 21) was accepted during the test, but not closed during the test. Close the inbound HTTP connection by calling `httpConn.close()`.

it(notFoundTests, "without extension", async () => {
  const response = await fetch("http://localhost:9001/api/invalid");
  const body = await response.json();
  assertEquals(response.status, 404);
  assertEquals(
    response.headers.get("Content-Type"),
    "application/json; charset=UTF-8",
  );
  assert(response.headers.has("X-Response-Time"));
  assert(!response.headers.has("etag"));
  assertEquals(body, {
    error: { name: "NotFoundError", message: "Not found", status: 404 },
  });
});

it(notFoundTests, "with json extension", async () => {
  const response = await fetch("http://localhost:9001/api/invalid.json");
  const body = await response.text();
  assertEquals(response.status, 404);
  assertEquals(response.headers.get("Content-Type"), null);
  assert(response.headers.has("X-Response-Time"));
  assert(!response.headers.has("etag"));
  assertEquals(body, "");
});