feat(vanilla): add testing infrastructure and tests (NK-wjnczv)

1 files changed, 339 insertions, 0 deletions

diff --git a/vanilla/node_modules/undici/lib/web/websocket/util.js b/vanilla/node_modules/undici/lib/web/websocket/util.js
new file mode 100644
index 0000000..eaa5e7a
--- /dev/null
+++ b/vanilla/node_modules/undici/lib/web/websocket/util.js
@@ -0,0 +1,339 @@
+'use strict'
+
+const { states, opcodes } = require('./constants')
+const { isUtf8 } = require('node:buffer')
+const { removeHTTPWhitespace } = require('../fetch/data-url')
+const { collectASequenceOfCodePointsFast } = require('../infra')
+
+/**
+ * @param {number} readyState
+ * @returns {boolean}
+ */
+function isConnecting (readyState) {
+  // If the WebSocket connection is not yet established, and the connection
+  // is not yet closed, then the WebSocket connection is in the CONNECTING state.
+  return readyState === states.CONNECTING
+}
+
+/**
+ * @param {number} readyState
+ * @returns {boolean}
+ */
+function isEstablished (readyState) {
+  // If the server's response is validated as provided for above, it is
+  // said that _The WebSocket Connection is Established_ and that the
+  // WebSocket Connection is in the OPEN state.
+  return readyState === states.OPEN
+}
+
+/**
+ * @param {number} readyState
+ * @returns {boolean}
+ */
+function isClosing (readyState) {
+  // Upon either sending or receiving a Close control frame, it is said
+  // that _The WebSocket Closing Handshake is Started_ and that the
+  // WebSocket connection is in the CLOSING state.
+  return readyState === states.CLOSING
+}
+
+/**
+ * @param {number} readyState
+ * @returns {boolean}
+ */
+function isClosed (readyState) {
+  return readyState === states.CLOSED
+}
+
+/**
+ * @see https://dom.spec.whatwg.org/#concept-event-fire
+ * @param {string} e
+ * @param {EventTarget} target
+ * @param {(...args: ConstructorParameters<typeof Event>) => Event} eventFactory
+ * @param {EventInit | undefined} eventInitDict
+ * @returns {void}
+ */
+function fireEvent (e, target, eventFactory = (type, init) => new Event(type, init), eventInitDict = {}) {
+  // 1. If eventConstructor is not given, then let eventConstructor be Event.
+
+  // 2. Let event be the result of creating an event given eventConstructor,
+  //    in the relevant realm of target.
+  // 3. Initialize event’s type attribute to e.
+  const event = eventFactory(e, eventInitDict)
+
+  // 4. Initialize any other IDL attributes of event as described in the
+  //    invocation of this algorithm.
+
+  // 5. Return the result of dispatching event at target, with legacy target
+  //    override flag set if set.
+  target.dispatchEvent(event)
+}
+
+/**
+ * @see https://websockets.spec.whatwg.org/#feedback-from-the-protocol
+ * @param {import('./websocket').Handler} handler
+ * @param {number} type Opcode
+ * @param {Buffer} data application data
+ * @returns {void}
+ */
+function websocketMessageReceived (handler, type, data) {
+  handler.onMessage(type, data)
+}
+
+/**
+ * @param {Buffer} buffer
+ * @returns {ArrayBuffer}
+ */
+function toArrayBuffer (buffer) {
+  if (buffer.byteLength === buffer.buffer.byteLength) {
+    return buffer.buffer
+  }
+  return new Uint8Array(buffer).buffer
+}
+
+/**
+ * @see https://datatracker.ietf.org/doc/html/rfc6455
+ * @see https://datatracker.ietf.org/doc/html/rfc2616
+ * @see https://bugs.chromium.org/p/chromium/issues/detail?id=398407
+ * @param {string} protocol
+ * @returns {boolean}
+ */
+function isValidSubprotocol (protocol) {
+  // If present, this value indicates one
+  // or more comma-separated subprotocol the client wishes to speak,
+  // ordered by preference.  The elements that comprise this value
+  // MUST be non-empty strings with characters in the range U+0021 to
+  // U+007E not including separator characters as defined in
+  // [RFC2616] and MUST all be unique strings.
+  if (protocol.length === 0) {
+    return false
+  }
+
+  for (let i = 0; i < protocol.length; ++i) {
+    const code = protocol.charCodeAt(i)
+
+    if (
+      code < 0x21 || // CTL, contains SP (0x20) and HT (0x09)
+      code > 0x7E ||
+      code === 0x22 || // "
+      code === 0x28 || // (
+      code === 0x29 || // )
+      code === 0x2C || // ,
+      code === 0x2F || // /
+      code === 0x3A || // :
+      code === 0x3B || // ;
+      code === 0x3C || // <
+      code === 0x3D || // =
+      code === 0x3E || // >
+      code === 0x3F || // ?
+      code === 0x40 || // @
+      code === 0x5B || // [
+      code === 0x5C || // \
+      code === 0x5D || // ]
+      code === 0x7B || // {
+      code === 0x7D // }
+    ) {
+      return false
+    }
+  }
+
+  return true
+}
+
+/**
+ * @see https://datatracker.ietf.org/doc/html/rfc6455#section-7-4
+ * @param {number} code
+ * @returns {boolean}
+ */
+function isValidStatusCode (code) {
+  if (code >= 1000 && code < 1015) {
+    return (
+      code !== 1004 && // reserved
+      code !== 1005 && // "MUST NOT be set as a status code"
+      code !== 1006 // "MUST NOT be set as a status code"
+    )
+  }
+
+  return code >= 3000 && code <= 4999
+}
+
+/**
+ * @see https://datatracker.ietf.org/doc/html/rfc6455#section-5.5
+ * @param {number} opcode
+ * @returns {boolean}
+ */
+function isControlFrame (opcode) {
+  return (
+    opcode === opcodes.CLOSE ||
+    opcode === opcodes.PING ||
+    opcode === opcodes.PONG
+  )
+}
+
+/**
+ * @param {number} opcode
+ * @returns {boolean}
+ */
+function isContinuationFrame (opcode) {
+  return opcode === opcodes.CONTINUATION
+}
+
+/**
+ * @param {number} opcode
+ * @returns {boolean}
+ */
+function isTextBinaryFrame (opcode) {
+  return opcode === opcodes.TEXT || opcode === opcodes.BINARY
+}
+
+/**
+ *
+ * @param {number} opcode
+ * @returns {boolean}
+ */
+function isValidOpcode (opcode) {
+  return isTextBinaryFrame(opcode) || isContinuationFrame(opcode) || isControlFrame(opcode)
+}
+
+/**
+ * Parses a Sec-WebSocket-Extensions header value.
+ * @param {string} extensions
+ * @returns {Map<string, string>}
+ */
+// TODO(@Uzlopak, @KhafraDev): make compliant https://datatracker.ietf.org/doc/html/rfc6455#section-9.1
+function parseExtensions (extensions) {
+  const position = { position: 0 }
+  const extensionList = new Map()
+
+  while (position.position < extensions.length) {
+    const pair = collectASequenceOfCodePointsFast(';', extensions, position)
+    const [name, value = ''] = pair.split('=', 2)
+
+    extensionList.set(
+      removeHTTPWhitespace(name, true, false),
+      removeHTTPWhitespace(value, false, true)
+    )
+
+    position.position++
+  }
+
+  return extensionList
+}
+
+/**
+ * @see https://www.rfc-editor.org/rfc/rfc7692#section-7.1.2.2
+ * @description "client-max-window-bits = 1*DIGIT"
+ * @param {string} value
+ * @returns {boolean}
+ */
+function isValidClientWindowBits (value) {
+  for (let i = 0; i < value.length; i++) {
+    const byte = value.charCodeAt(i)
+
+    if (byte < 0x30 || byte > 0x39) {
+      return false
+    }
+  }
+
+  return true
+}
+
+/**
+ * @see https://whatpr.org/websockets/48/7b748d3...d5570f3.html#get-a-url-record
+ * @param {string} url
+ * @param {string} [baseURL]
+ */
+function getURLRecord (url, baseURL) {
+  // 1. Let urlRecord be the result of applying the URL parser to url with baseURL .
+  // 2. If urlRecord is failure, then throw a " SyntaxError " DOMException .
+  let urlRecord
+
+  try {
+    urlRecord = new URL(url, baseURL)
+  } catch (e) {
+    throw new DOMException(e, 'SyntaxError')
+  }
+
+  // 3. If urlRecord ’s scheme is " http ", then set urlRecord ’s scheme to " ws ".
+  // 4. Otherwise, if urlRecord ’s scheme is " https ", set urlRecord ’s scheme to " wss ".
+  if (urlRecord.protocol === 'http:') {
+    urlRecord.protocol = 'ws:'
+  } else if (urlRecord.protocol === 'https:') {
+    urlRecord.protocol = 'wss:'
+  }
+
+  // 5. If urlRecord ’s scheme is not " ws " or " wss ", then throw a " SyntaxError " DOMException .
+  if (urlRecord.protocol !== 'ws:' && urlRecord.protocol !== 'wss:') {
+    throw new DOMException('expected a ws: or wss: url', 'SyntaxError')
+  }
+
+  // If urlRecord ’s fragment is non-null, then throw a " SyntaxError " DOMException .
+  if (urlRecord.hash.length || urlRecord.href.endsWith('#')) {
+    throw new DOMException('hash', 'SyntaxError')
+  }
+
+  // Return urlRecord .
+  return urlRecord
+}
+
+// https://whatpr.org/websockets/48.html#validate-close-code-and-reason
+function validateCloseCodeAndReason (code, reason) {
+  // 1. If code is not null, but is neither an integer equal to
+  //    1000 nor an integer in the range 3000 to 4999, inclusive,
+  //    throw an "InvalidAccessError" DOMException.
+  if (code !== null) {
+    if (code !== 1000 && (code < 3000 || code > 4999)) {
+      throw new DOMException('invalid code', 'InvalidAccessError')
+    }
+  }
+
+  // 2. If reason is not null, then:
+  if (reason !== null) {
+    // 2.1. Let reasonBytes be the result of UTF-8 encoding reason.
+    // 2.2. If reasonBytes is longer than 123 bytes, then throw a
+    //      "SyntaxError" DOMException.
+    const reasonBytesLength = Buffer.byteLength(reason)
+
+    if (reasonBytesLength > 123) {
+      throw new DOMException(`Reason must be less than 123 bytes; received ${reasonBytesLength}`, 'SyntaxError')
+    }
+  }
+}
+
+/**
+ * Converts a Buffer to utf-8, even on platforms without icu.
+ * @type {(buffer: Buffer) => string}
+ */
+const utf8Decode = (() => {
+  if (typeof process.versions.icu === 'string') {
+    const fatalDecoder = new TextDecoder('utf-8', { fatal: true })
+    return fatalDecoder.decode.bind(fatalDecoder)
+  }
+  return function (buffer) {
+    if (isUtf8(buffer)) {
+      return buffer.toString('utf-8')
+    }
+    throw new TypeError('Invalid utf-8 received.')
+  }
+})()
+
+module.exports = {
+  isConnecting,
+  isEstablished,
+  isClosing,
+  isClosed,
+  fireEvent,
+  isValidSubprotocol,
+  isValidStatusCode,
+  websocketMessageReceived,
+  utf8Decode,
+  isControlFrame,
+  isContinuationFrame,
+  isTextBinaryFrame,
+  isValidOpcode,
+  parseExtensions,
+  isValidClientWindowBits,
+  toArrayBuffer,
+  getURLRecord,
+  validateCloseCodeAndReason
+}