body_parser_test.ts

// Copyright 2019-2020 Yusuke Sakurai. All rights reserved. MIT license.
import {
  MultipartWriter,
} from "./vendor/https/deno.land/std/mime/multipart.ts";
import {
  assert,
  assertEquals,
  assertThrowsAsync,
} from "./vendor/https/deno.land/std/testing/asserts.ts";
import { parserMultipartRequest } from "./body_parser.ts";
import * as fs from "./vendor/https/deno.land/std/fs/mod.ts";
import Buffer = Deno.Buffer;
import { group } from "./test_util.ts";

group("multipart", ({ test }) => {
  test("basic", async () => {
    const buf = new Buffer();
    const w = new MultipartWriter(buf);
    await w.writeField("deno", "land");
    const f = await Deno.open("./README.md");
    await w.writeFile("file", "README.md", f);
    await w.close();
    f.close();
    const m = await parserMultipartRequest(
      {
        headers: new Headers({
          "content-type": w.formDataContentType(),
        }),
        body: buf,
      },
      1000,
    );
    assertEquals(m.value("hoge"), undefined);
    assertEquals(m.value("deno"), "land");
    const mfile = m.file("file")!;
    assertEquals(mfile.filename, "README.md");
    assert(mfile.tempfile !== undefined, "temp file should be created");
    await m.removeAll();
    assertEquals(await fs.exists(mfile.tempfile!), false);
  });
  test("should throw if content-type is invalid", async () => {
    const body = new Buffer();
    await assertThrowsAsync(async () => {
      await parserMultipartRequest({
        headers: new Headers(),
        body,
      });
    }, Error, "is not multipart");
    await assertThrowsAsync(async () => {
      await parserMultipartRequest({
        headers: new Headers({
          "content-type": "application/json",
        }),
        body,
      });
    }, Error, "is not multipart");
    await assertThrowsAsync(async () => {
      await parserMultipartRequest({
        headers: new Headers({
          "content-type": "multipart/form-data; ",
        }),
        body,
      });
    }, Error, "doesn't have boundary");
  });
});