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io_test.ts
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io_test.ts
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import {
AssertionError,
assertThrowsAsync,
assertEquals,
assert,
assertNotEOF,
assertNotEquals,
} from "../testing/asserts.ts";
import {
bodyReader,
writeTrailers,
readTrailers,
parseHTTPVersion,
readRequest,
writeResponse,
} from "./io.ts";
import { encode, decode } from "../encoding/utf8.ts";
import { BufReader, ReadLineResult } from "../io/bufio.ts";
import { chunkedBodyReader } from "./io.ts";
import { ServerRequest, Response } from "./server.ts";
import { StringReader } from "../io/readers.ts";
import { mockConn } from "./mock.ts";
const { Buffer, test } = Deno;
test("bodyReader", async () => {
const text = "Hello, Deno";
const r = bodyReader(text.length, new BufReader(new Buffer(encode(text))));
assertEquals(decode(await Deno.readAll(r)), text);
});
function chunkify(n: number, char: string): string {
const v = Array.from({ length: n })
.map(() => `${char}`)
.join("");
return `${n.toString(16)}\r\n${v}\r\n`;
}
test("chunkedBodyReader", async () => {
const body = [
chunkify(3, "a"),
chunkify(5, "b"),
chunkify(11, "c"),
chunkify(22, "d"),
chunkify(0, ""),
].join("");
const h = new Headers();
const r = chunkedBodyReader(h, new BufReader(new Buffer(encode(body))));
let result: number | Deno.EOF;
// Use small buffer as some chunks exceed buffer size
const buf = new Uint8Array(5);
const dest = new Buffer();
while ((result = await r.read(buf)) !== Deno.EOF) {
const len = Math.min(buf.byteLength, result);
await dest.write(buf.subarray(0, len));
}
const exp = "aaabbbbbcccccccccccdddddddddddddddddddddd";
assertEquals(dest.toString(), exp);
});
test("chunkedBodyReader with trailers", async () => {
const body = [
chunkify(3, "a"),
chunkify(5, "b"),
chunkify(11, "c"),
chunkify(22, "d"),
chunkify(0, ""),
"deno: land\r\n",
"node: js\r\n",
"\r\n",
].join("");
const h = new Headers({
trailer: "deno,node",
});
const r = chunkedBodyReader(h, new BufReader(new Buffer(encode(body))));
assertEquals(h.has("trailer"), true);
assertEquals(h.has("deno"), false);
assertEquals(h.has("node"), false);
const act = decode(await Deno.readAll(r));
const exp = "aaabbbbbcccccccccccdddddddddddddddddddddd";
assertEquals(act, exp);
assertEquals(h.has("trailer"), false);
assertEquals(h.get("deno"), "land");
assertEquals(h.get("node"), "js");
});
test("readTrailers", async () => {
const h = new Headers({
trailer: "deno,node",
});
const trailer = ["deno: land", "node: js", "", ""].join("\r\n");
await readTrailers(h, new BufReader(new Buffer(encode(trailer))));
assertEquals(h.has("trailer"), false);
assertEquals(h.get("deno"), "land");
assertEquals(h.get("node"), "js");
});
test("readTrailer should throw if undeclared headers found in trailer", async () => {
const patterns = [
["deno,node", "deno: land\r\nnode: js\r\ngo: lang\r\n\r\n"],
["deno", "node: js\r\n\r\n"],
["deno", "node:js\r\ngo: lang\r\n\r\n"],
];
for (const [header, trailer] of patterns) {
const h = new Headers({
trailer: header,
});
await assertThrowsAsync(
async () => {
await readTrailers(h, new BufReader(new Buffer(encode(trailer))));
},
Error,
"Undeclared trailer field"
);
}
});
test("readTrailer should throw if trailer contains prohibited fields", async () => {
for (const f of ["content-length", "trailer", "transfer-encoding"]) {
const h = new Headers({
trailer: f,
});
await assertThrowsAsync(
async () => {
await readTrailers(h, new BufReader(new Buffer()));
},
Error,
"Prohibited field for trailer"
);
}
});
test("writeTrailer", async () => {
const w = new Buffer();
await writeTrailers(
w,
new Headers({ "transfer-encoding": "chunked", trailer: "deno,node" }),
new Headers({ deno: "land", node: "js" })
);
assertEquals(w.toString(), "deno: land\r\nnode: js\r\n\r\n");
});
test("writeTrailer should throw", async () => {
const w = new Buffer();
await assertThrowsAsync(
() => {
return writeTrailers(w, new Headers(), new Headers());
},
Error,
'must have "trailer"'
);
await assertThrowsAsync(
() => {
return writeTrailers(w, new Headers({ trailer: "deno" }), new Headers());
},
Error,
"only allowed"
);
for (const f of ["content-length", "trailer", "transfer-encoding"]) {
await assertThrowsAsync(
() => {
return writeTrailers(
w,
new Headers({ "transfer-encoding": "chunked", trailer: f }),
new Headers({ [f]: "1" })
);
},
AssertionError,
"prohibited"
);
}
await assertThrowsAsync(
() => {
return writeTrailers(
w,
new Headers({ "transfer-encoding": "chunked", trailer: "deno" }),
new Headers({ node: "js" })
);
},
AssertionError,
"Not trailer"
);
});
// Ported from https://github.com/golang/go/blob/f5c43b9/src/net/http/request_test.go#L535-L565
test("parseHttpVersion", (): void => {
const testCases = [
{ in: "HTTP/0.9", want: [0, 9] },
{ in: "HTTP/1.0", want: [1, 0] },
{ in: "HTTP/1.1", want: [1, 1] },
{ in: "HTTP/3.14", want: [3, 14] },
{ in: "HTTP", err: true },
{ in: "HTTP/one.one", err: true },
{ in: "HTTP/1.1/", err: true },
{ in: "HTTP/-1.0", err: true },
{ in: "HTTP/0.-1", err: true },
{ in: "HTTP/", err: true },
{ in: "HTTP/1,0", err: true },
];
for (const t of testCases) {
let r, err;
try {
r = parseHTTPVersion(t.in);
} catch (e) {
err = e;
}
if (t.err) {
assert(err instanceof Error, t.in);
} else {
assertEquals(err, undefined);
assertEquals(r, t.want, t.in);
}
}
});
test(async function writeUint8ArrayResponse(): Promise<void> {
const shortText = "Hello";
const body = new TextEncoder().encode(shortText);
const res: Response = { body };
const buf = new Deno.Buffer();
await writeResponse(buf, res);
const decoder = new TextDecoder("utf-8");
const reader = new BufReader(buf);
let r: ReadLineResult;
r = assertNotEOF(await reader.readLine());
assertEquals(decoder.decode(r.line), "HTTP/1.1 200 OK");
assertEquals(r.more, false);
r = assertNotEOF(await reader.readLine());
assertEquals(decoder.decode(r.line), `content-length: ${shortText.length}`);
assertEquals(r.more, false);
r = assertNotEOF(await reader.readLine());
assertEquals(r.line.byteLength, 0);
assertEquals(r.more, false);
r = assertNotEOF(await reader.readLine());
assertEquals(decoder.decode(r.line), shortText);
assertEquals(r.more, false);
const eof = await reader.readLine();
assertEquals(eof, Deno.EOF);
});
test(async function writeStringResponse(): Promise<void> {
const body = "Hello";
const res: Response = { body };
const buf = new Deno.Buffer();
await writeResponse(buf, res);
const decoder = new TextDecoder("utf-8");
const reader = new BufReader(buf);
let r: ReadLineResult;
r = assertNotEOF(await reader.readLine());
assertEquals(decoder.decode(r.line), "HTTP/1.1 200 OK");
assertEquals(r.more, false);
r = assertNotEOF(await reader.readLine());
assertEquals(decoder.decode(r.line), `content-length: ${body.length}`);
assertEquals(r.more, false);
r = assertNotEOF(await reader.readLine());
assertEquals(r.line.byteLength, 0);
assertEquals(r.more, false);
r = assertNotEOF(await reader.readLine());
assertEquals(decoder.decode(r.line), body);
assertEquals(r.more, false);
const eof = await reader.readLine();
assertEquals(eof, Deno.EOF);
});
test(async function writeStringReaderResponse(): Promise<void> {
const shortText = "Hello";
const body = new StringReader(shortText);
const res: Response = { body };
const buf = new Deno.Buffer();
await writeResponse(buf, res);
const decoder = new TextDecoder("utf-8");
const reader = new BufReader(buf);
let r: ReadLineResult;
r = assertNotEOF(await reader.readLine());
assertEquals(decoder.decode(r.line), "HTTP/1.1 200 OK");
assertEquals(r.more, false);
r = assertNotEOF(await reader.readLine());
assertEquals(decoder.decode(r.line), "transfer-encoding: chunked");
assertEquals(r.more, false);
r = assertNotEOF(await reader.readLine());
assertEquals(r.line.byteLength, 0);
assertEquals(r.more, false);
r = assertNotEOF(await reader.readLine());
assertEquals(decoder.decode(r.line), shortText.length.toString());
assertEquals(r.more, false);
r = assertNotEOF(await reader.readLine());
assertEquals(decoder.decode(r.line), shortText);
assertEquals(r.more, false);
r = assertNotEOF(await reader.readLine());
assertEquals(decoder.decode(r.line), "0");
assertEquals(r.more, false);
});
test("writeResponse with trailer", async () => {
const w = new Buffer();
const body = new StringReader("Hello");
await writeResponse(w, {
status: 200,
headers: new Headers({
"transfer-encoding": "chunked",
trailer: "deno,node",
}),
body,
trailers: () => new Headers({ deno: "land", node: "js" }),
});
const ret = w.toString();
const exp = [
"HTTP/1.1 200 OK",
"transfer-encoding: chunked",
"trailer: deno,node",
"",
"5",
"Hello",
"0",
"",
"deno: land",
"node: js",
"",
"",
].join("\r\n");
assertEquals(ret, exp);
});
test("writeResponse with repeating headers", async () => {
const body = "Hello";
const res: Response = {
body,
headers: new Headers([
["set-cookie", "user.session=qwertz; Max-Age=86400"],
[
"set-cookie",
"mykey=myvalue; expires=Mon, 17-Jul-2017" +
" 16:06:00 GMT; Max-Age=31449600; Path=/; secure",
],
["set-cookie", "b=456; Domain=example.com; Secure; HttpOnly"],
["x-other-header", "some, value"],
["x-other-header", "custom=pair; values"],
]),
};
const w = new Buffer();
await writeResponse(w, res);
const ret = w.toString();
const exp = [
"HTTP/1.1 200 OK",
`content-length: ${body.length}`,
"set-cookie: user.session=qwertz; Max-Age=86400",
"set-cookie: mykey=myvalue; expires=Mon, 17-Jul-2017" +
" 16:06:00 GMT; Max-Age=31449600; Path=/; secure",
"set-cookie: b=456; Domain=example.com; Secure; HttpOnly",
"x-other-header: some, value, custom=pair; values",
"",
"5",
body,
"0",
"",
].join("\r\n");
assertEquals(ret, exp);
});
test(async function readRequestError(): Promise<void> {
const input = `GET / HTTP/1.1
malformedHeader
`;
const reader = new BufReader(new StringReader(input));
let err;
try {
await readRequest(mockConn(), reader);
} catch (e) {
err = e;
}
assert(err instanceof Error);
assertEquals(err.message, "malformed MIME header line: malformedHeader");
});
// Ported from Go
// https://github.com/golang/go/blob/go1.12.5/src/net/http/request_test.go#L377-L443
// TODO(zekth) fix tests
test(async function testReadRequestError(): Promise<void> {
const testCases = [
{
in: "GET / HTTP/1.1\r\nheader: foo\r\n\r\n",
headers: [{ key: "header", value: "foo" }],
},
{
in: "GET / HTTP/1.1\r\nheader:foo\r\n",
err: Deno.errors.UnexpectedEof,
},
{ in: "", err: Deno.EOF },
{
in: "HEAD / HTTP/1.1\r\nContent-Length:4\r\n\r\n",
err: "http: method cannot contain a Content-Length",
},
{
in: "HEAD / HTTP/1.1\r\n\r\n",
headers: [],
},
// Multiple Content-Length values should either be
// deduplicated if same or reject otherwise
// See Issue 16490.
{
in:
"POST / HTTP/1.1\r\nContent-Length: 10\r\nContent-Length: 0\r\n\r\n" +
"Gopher hey\r\n",
err: "cannot contain multiple Content-Length headers",
},
{
in:
"POST / HTTP/1.1\r\nContent-Length: 10\r\nContent-Length: 6\r\n\r\n" +
"Gopher\r\n",
err: "cannot contain multiple Content-Length headers",
},
{
in:
"PUT / HTTP/1.1\r\nContent-Length: 6 \r\nContent-Length: 6\r\n" +
"Content-Length:6\r\n\r\nGopher\r\n",
headers: [{ key: "Content-Length", value: "6" }],
},
{
in: "PUT / HTTP/1.1\r\nContent-Length: 1\r\nContent-Length: 6 \r\n\r\n",
err: "cannot contain multiple Content-Length headers",
},
// Setting an empty header is swallowed by textproto
// see: readMIMEHeader()
// {
// in: "POST / HTTP/1.1\r\nContent-Length:\r\nContent-Length: 3\r\n\r\n",
// err: "cannot contain multiple Content-Length headers"
// },
{
in: "HEAD / HTTP/1.1\r\nContent-Length:0\r\nContent-Length: 0\r\n\r\n",
headers: [{ key: "Content-Length", value: "0" }],
},
{
in:
"POST / HTTP/1.1\r\nContent-Length:0\r\ntransfer-encoding: " +
"chunked\r\n\r\n",
headers: [],
err: "http: Transfer-Encoding and Content-Length cannot be send together",
},
];
for (const test of testCases) {
const reader = new BufReader(new StringReader(test.in));
let err;
let req: ServerRequest | Deno.EOF | undefined;
try {
req = await readRequest(mockConn(), reader);
} catch (e) {
err = e;
}
if (test.err === Deno.EOF) {
assertEquals(req, Deno.EOF);
} else if (typeof test.err === "string") {
assertEquals(err.message, test.err);
} else if (test.err) {
assert(err instanceof (test.err as typeof Deno.errors.UnexpectedEof));
} else {
assert(req instanceof ServerRequest);
assert(test.headers);
assertEquals(err, undefined);
assertNotEquals(req, Deno.EOF);
for (const h of test.headers) {
assertEquals(req.headers.get(h.key), h.value);
}
}
}
});