http#

import "velt/test/http". Matchers for a Response, for tests of HTTP servers and clients (Testing): the import adds them to expect(response).

toHaveStatus(status): the response's status is status.
toHaveHeader(name, value?): the response has the header name (in any case); with value, with that value. With .not: that it doesn't.

import { expect, test } from "velt/test";
import "velt/test/http";

test("not modified", () => {
  const res = new Response(null, { status: 304, headers: { etag: "\"v1\"" } });
  expect(res).toHaveStatus(304);
  expect(res).toHaveHeader("etag", "\"v1\"");
  expect(res).not.toHaveHeader("content-type");
});