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// Copyright 2019-2020 Yusuke Sakurai. All rights reserved. MIT license.import { createResponder } from "./responder.ts";import {  assert,  assertEquals,  assertThrowsAsync,} from "./vendor/https/deno.land/std/testing/asserts.ts";import { StringReader } from "./vendor/https/deno.land/std/io/readers.ts";import { readResponse, writeResponse } from "./serveio.ts";import { group } from "./_test_util.ts";import { Buffer } from "./vendor/https/deno.land/std/io/buffer.ts";
group("responder", (t) => {  function _createResponder(w: Deno.Writer) {    return createResponder((resp) => writeResponse(w, resp));  }  t.test("basic", async function () {    const w = new Buffer();    const res = _createResponder(w);    assert(!res.isResponded());    await res.respond({      status: 200,      headers: new Headers({        "content-type": "text/plain",      }),      body: new StringReader("ok"),    });    assert(res.isResponded());    const resp = await readResponse(w);    assertEquals(resp.status, 200);    assertEquals(resp.headers.get("content-type"), "text/plain");    assertEquals(await resp.text(), "ok");  });
  t.test("respond() should throw if already responded", async function () {    const w = new Buffer();    const res = _createResponder(w);    await res.respond({      status: 200,      headers: new Headers(),    });    await assertThrowsAsync(      async () =>        res.respond({          status: 200,          headers: new Headers(),        }),      Error,      "responded",    );  });
  t.test("sendFile() basic", async function () {    const w = new Buffer();    const res = _createResponder(w);    await res.sendFile("./fixtures/sample.txt");    const resp = await readResponse(w);    assertEquals(resp.status, 200);    assertEquals(resp.headers.get("content-type"), "text/plain");    assertEquals(await resp.text(), "sample");  });
  t.test("sendFile() should throw if file not found", async () => {    const w = new Buffer();    const res = _createResponder(w);    await assertThrowsAsync(      () => res.sendFile("./fixtures/not-found"),      Deno.errors.NotFound,    );  });
  t.test("sendFile() with attachment", async () => {    const w = new Buffer();    const res = _createResponder(w);    await res.sendFile("./fixtures/sample.txt", {      contentDisposition: "inline",    });    const resp = await readResponse(w);    assertEquals(resp.status, 200);    assertEquals(resp.headers.get("content-disposition"), "inline");    assertEquals(await resp.text(), "sample");  });
  t.test("sendFile() with attachment", async () => {    const w = new Buffer();    const res = _createResponder(w);    await res.sendFile("./fixtures/sample.txt", {      contentDisposition: "attachment",    });    const resp = await readResponse(w);    assertEquals(resp.status, 200);    assertEquals(      resp.headers.get("content-disposition"),      'attachment; filename="sample.txt"',    );    assertEquals(await resp.text(), "sample");  });
  t.test("redirect() should set Location header", async () => {    const w = new Buffer();    const res = _createResponder(w);    await res.redirect("/index.html");    const { status, headers } = await readResponse(w);    assertEquals(status, 302);    assertEquals(headers.get("location"), "/index.html");  });
  t.test("redirect() should use partial body for response", async () => {    const w = new Buffer();    const res = _createResponder(w);    await res.redirect("/", {      status: 303,      headers: new Headers({ "content-type": "text/plain" }),      body: "Redirecting...",    });    const resp = await readResponse(w);    assertEquals(resp.status, 303);    assertEquals(resp.headers.get("content-type"), "text/plain");    assertEquals(await resp.text(), "Redirecting...");  });
  t.test("resirect() should throw error if status code is not in 300~399", async () => {    const w = new Buffer();    const res = _createResponder(w);    await assertThrowsAsync(      async () => {        await res.redirect("/", { status: 200 });      },      Error,      "redirection status code",    );  });
  t.test("markResponded()", async () => {    const w = new Buffer();    const res = _createResponder(w);    res.markAsResponded(200);    assertEquals(res.isResponded(), true);    assertEquals(res.respondedStatus(), 200);    await assertThrowsAsync(      () => res.respond({ status: 404, body: "404" }),      Error,      "already",    );  });});