1 files changed, 480 insertions, 0 deletions
diff --git a/vanilla/node_modules/undici/lib/mock/mock-utils.js b/vanilla/node_modules/undici/lib/mock/mock-utils.js
new file mode 100644
index 0000000..291a857
--- /dev/null
+++ b/vanilla/node_modules/undici/lib/mock/mock-utils.js
@@ -0,0 +1,480 @@
+'use strict'
+
+const { MockNotMatchedError } = require('./mock-errors')
+const {
+  kDispatches,
+  kMockAgent,
+  kOriginalDispatch,
+  kOrigin,
+  kGetNetConnect
+} = require('./mock-symbols')
+const { serializePathWithQuery } = require('../core/util')
+const { STATUS_CODES } = require('node:http')
+const {
+  types: {
+    isPromise
+  }
+} = require('node:util')
+const { InvalidArgumentError } = require('../core/errors')
+
+function matchValue (match, value) {
+  if (typeof match === 'string') {
+    return match === value
+  }
+  if (match instanceof RegExp) {
+    return match.test(value)
+  }
+  if (typeof match === 'function') {
+    return match(value) === true
+  }
+  return false
+}
+
+function lowerCaseEntries (headers) {
+  return Object.fromEntries(
+    Object.entries(headers).map(([headerName, headerValue]) => {
+      return [headerName.toLocaleLowerCase(), headerValue]
+    })
+  )
+}
+
+/**
+ * @param {import('../../index').Headers|string[]|Record<string, string>} headers
+ * @param {string} key
+ */
+function getHeaderByName (headers, key) {
+  if (Array.isArray(headers)) {
+    for (let i = 0; i < headers.length; i += 2) {
+      if (headers[i].toLocaleLowerCase() === key.toLocaleLowerCase()) {
+        return headers[i + 1]
+      }
+    }
+
+    return undefined
+  } else if (typeof headers.get === 'function') {
+    return headers.get(key)
+  } else {
+    return lowerCaseEntries(headers)[key.toLocaleLowerCase()]
+  }
+}
+
+/** @param {string[]} headers */
+function buildHeadersFromArray (headers) { // fetch HeadersList
+  const clone = headers.slice()
+  const entries = []
+  for (let index = 0; index < clone.length; index += 2) {
+    entries.push([clone[index], clone[index + 1]])
+  }
+  return Object.fromEntries(entries)
+}
+
+function matchHeaders (mockDispatch, headers) {
+  if (typeof mockDispatch.headers === 'function') {
+    if (Array.isArray(headers)) { // fetch HeadersList
+      headers = buildHeadersFromArray(headers)
+    }
+    return mockDispatch.headers(headers ? lowerCaseEntries(headers) : {})
+  }
+  if (typeof mockDispatch.headers === 'undefined') {
+    return true
+  }
+  if (typeof headers !== 'object' || typeof mockDispatch.headers !== 'object') {
+    return false
+  }
+
+  for (const [matchHeaderName, matchHeaderValue] of Object.entries(mockDispatch.headers)) {
+    const headerValue = getHeaderByName(headers, matchHeaderName)
+
+    if (!matchValue(matchHeaderValue, headerValue)) {
+      return false
+    }
+  }
+  return true
+}
+
+function normalizeSearchParams (query) {
+  if (typeof query !== 'string') {
+    return query
+  }
+
+  const originalQp = new URLSearchParams(query)
+  const normalizedQp = new URLSearchParams()
+
+  for (let [key, value] of originalQp.entries()) {
+    key = key.replace('[]', '')
+
+    const valueRepresentsString = /^(['"]).*\1$/.test(value)
+    if (valueRepresentsString) {
+      normalizedQp.append(key, value)
+      continue
+    }
+
+    if (value.includes(',')) {
+      const values = value.split(',')
+      for (const v of values) {
+        normalizedQp.append(key, v)
+      }
+      continue
+    }
+
+    normalizedQp.append(key, value)
+  }
+
+  return normalizedQp
+}
+
+function safeUrl (path) {
+  if (typeof path !== 'string') {
+    return path
+  }
+  const pathSegments = path.split('?', 3)
+  if (pathSegments.length !== 2) {
+    return path
+  }
+
+  const qp = new URLSearchParams(pathSegments.pop())
+  qp.sort()
+  return [...pathSegments, qp.toString()].join('?')
+}
+
+function matchKey (mockDispatch, { path, method, body, headers }) {
+  const pathMatch = matchValue(mockDispatch.path, path)
+  const methodMatch = matchValue(mockDispatch.method, method)
+  const bodyMatch = typeof mockDispatch.body !== 'undefined' ? matchValue(mockDispatch.body, body) : true
+  const headersMatch = matchHeaders(mockDispatch, headers)
+  return pathMatch && methodMatch && bodyMatch && headersMatch
+}
+
+function getResponseData (data) {
+  if (Buffer.isBuffer(data)) {
+    return data
+  } else if (data instanceof Uint8Array) {
+    return data
+  } else if (data instanceof ArrayBuffer) {
+    return data
+  } else if (typeof data === 'object') {
+    return JSON.stringify(data)
+  } else if (data) {
+    return data.toString()
+  } else {
+    return ''
+  }
+}
+
+function getMockDispatch (mockDispatches, key) {
+  const basePath = key.query ? serializePathWithQuery(key.path, key.query) : key.path
+  const resolvedPath = typeof basePath === 'string' ? safeUrl(basePath) : basePath
+
+  const resolvedPathWithoutTrailingSlash = removeTrailingSlash(resolvedPath)
+
+  // Match path
+  let matchedMockDispatches = mockDispatches
+    .filter(({ consumed }) => !consumed)
+    .filter(({ path, ignoreTrailingSlash }) => {
+      return ignoreTrailingSlash
+        ? matchValue(removeTrailingSlash(safeUrl(path)), resolvedPathWithoutTrailingSlash)
+        : matchValue(safeUrl(path), resolvedPath)
+    })
+  if (matchedMockDispatches.length === 0) {
+    throw new MockNotMatchedError(`Mock dispatch not matched for path '${resolvedPath}'`)
+  }
+
+  // Match method
+  matchedMockDispatches = matchedMockDispatches.filter(({ method }) => matchValue(method, key.method))
+  if (matchedMockDispatches.length === 0) {
+    throw new MockNotMatchedError(`Mock dispatch not matched for method '${key.method}' on path '${resolvedPath}'`)
+  }
+
+  // Match body
+  matchedMockDispatches = matchedMockDispatches.filter(({ body }) => typeof body !== 'undefined' ? matchValue(body, key.body) : true)
+  if (matchedMockDispatches.length === 0) {
+    throw new MockNotMatchedError(`Mock dispatch not matched for body '${key.body}' on path '${resolvedPath}'`)
+  }
+
+  // Match headers
+  matchedMockDispatches = matchedMockDispatches.filter((mockDispatch) => matchHeaders(mockDispatch, key.headers))
+  if (matchedMockDispatches.length === 0) {
+    const headers = typeof key.headers === 'object' ? JSON.stringify(key.headers) : key.headers
+    throw new MockNotMatchedError(`Mock dispatch not matched for headers '${headers}' on path '${resolvedPath}'`)
+  }
+
+  return matchedMockDispatches[0]
+}
+
+function addMockDispatch (mockDispatches, key, data, opts) {
+  const baseData = { timesInvoked: 0, times: 1, persist: false, consumed: false, ...opts }
+  const replyData = typeof data === 'function' ? { callback: data } : { ...data }
+  const newMockDispatch = { ...baseData, ...key, pending: true, data: { error: null, ...replyData } }
+  mockDispatches.push(newMockDispatch)
+  return newMockDispatch
+}
+
+function deleteMockDispatch (mockDispatches, key) {
+  const index = mockDispatches.findIndex(dispatch => {
+    if (!dispatch.consumed) {
+      return false
+    }
+    return matchKey(dispatch, key)
+  })
+  if (index !== -1) {
+    mockDispatches.splice(index, 1)
+  }
+}
+
+/**
+ * @param {string} path Path to remove trailing slash from
+ */
+function removeTrailingSlash (path) {
+  while (path.endsWith('/')) {
+    path = path.slice(0, -1)
+  }
+
+  if (path.length === 0) {
+    path = '/'
+  }
+
+  return path
+}
+
+function buildKey (opts) {
+  const { path, method, body, headers, query } = opts
+
+  return {
+    path,
+    method,
+    body,
+    headers,
+    query
+  }
+}
+
+function generateKeyValues (data) {
+  const keys = Object.keys(data)
+  const result = []
+  for (let i = 0; i < keys.length; ++i) {
+    const key = keys[i]
+    const value = data[key]
+    const name = Buffer.from(`${key}`)
+    if (Array.isArray(value)) {
+      for (let j = 0; j < value.length; ++j) {
+        result.push(name, Buffer.from(`${value[j]}`))
+      }
+    } else {
+      result.push(name, Buffer.from(`${value}`))
+    }
+  }
+  return result
+}
+
+/**
+ * @see https://developer.mozilla.org/en-US/docs/Web/HTTP/Status
+ * @param {number} statusCode
+ */
+function getStatusText (statusCode) {
+  return STATUS_CODES[statusCode] || 'unknown'
+}
+
+async function getResponse (body) {
+  const buffers = []
+  for await (const data of body) {
+    buffers.push(data)
+  }
+  return Buffer.concat(buffers).toString('utf8')
+}
+
+/**
+ * Mock dispatch function used to simulate undici dispatches
+ */
+function mockDispatch (opts, handler) {
+  // Get mock dispatch from built key
+  const key = buildKey(opts)
+  const mockDispatch = getMockDispatch(this[kDispatches], key)
+
+  mockDispatch.timesInvoked++
+
+  // Here's where we resolve a callback if a callback is present for the dispatch data.
+  if (mockDispatch.data.callback) {
+    mockDispatch.data = { ...mockDispatch.data, ...mockDispatch.data.callback(opts) }
+  }
+
+  // Parse mockDispatch data
+  const { data: { statusCode, data, headers, trailers, error }, delay, persist } = mockDispatch
+  const { timesInvoked, times } = mockDispatch
+
+  // If it's used up and not persistent, mark as consumed
+  mockDispatch.consumed = !persist && timesInvoked >= times
+  mockDispatch.pending = timesInvoked < times
+
+  // If specified, trigger dispatch error
+  if (error !== null) {
+    deleteMockDispatch(this[kDispatches], key)
+    handler.onError(error)
+    return true
+  }
+
+  // Track whether the request has been aborted
+  let aborted = false
+  let timer = null
+
+  function abort (err) {
+    if (aborted) {
+      return
+    }
+    aborted = true
+
+    // Clear the pending delayed response if any
+    if (timer !== null) {
+      clearTimeout(timer)
+      timer = null
+    }
+
+    // Notify the handler of the abort
+    handler.onError(err)
+  }
+
+  // Call onConnect to allow the handler to register the abort callback
+  handler.onConnect?.(abort, null)
+
+  // Handle the request with a delay if necessary
+  if (typeof delay === 'number' && delay > 0) {
+    timer = setTimeout(() => {
+      timer = null
+      handleReply(this[kDispatches])
+    }, delay)
+  } else {
+    handleReply(this[kDispatches])
+  }
+
+  function handleReply (mockDispatches, _data = data) {
+    // Don't send response if the request was aborted
+    if (aborted) {
+      return
+    }
+
+    // fetch's HeadersList is a 1D string array
+    const optsHeaders = Array.isArray(opts.headers)
+      ? buildHeadersFromArray(opts.headers)
+      : opts.headers
+    const body = typeof _data === 'function'
+      ? _data({ ...opts, headers: optsHeaders })
+      : _data
+
+    // util.types.isPromise is likely needed for jest.
+    if (isPromise(body)) {
+      // If handleReply is asynchronous, throwing an error
+      // in the callback will reject the promise, rather than
+      // synchronously throw the error, which breaks some tests.
+      // Rather, we wait for the callback to resolve if it is a
+      // promise, and then re-run handleReply with the new body.
+      return body.then((newData) => handleReply(mockDispatches, newData))
+    }
+
+    // Check again if aborted after async body resolution
+    if (aborted) {
+      return
+    }
+
+    const responseData = getResponseData(body)
+    const responseHeaders = generateKeyValues(headers)
+    const responseTrailers = generateKeyValues(trailers)
+
+    handler.onHeaders?.(statusCode, responseHeaders, resume, getStatusText(statusCode))
+    handler.onData?.(Buffer.from(responseData))
+    handler.onComplete?.(responseTrailers)
+    deleteMockDispatch(mockDispatches, key)
+  }
+
+  function resume () {}
+
+  return true
+}
+
+function buildMockDispatch () {
+  const agent = this[kMockAgent]
+  const origin = this[kOrigin]
+  const originalDispatch = this[kOriginalDispatch]
+
+  return function dispatch (opts, handler) {
+    if (agent.isMockActive) {
+      try {
+        mockDispatch.call(this, opts, handler)
+      } catch (error) {
+        if (error.code === 'UND_MOCK_ERR_MOCK_NOT_MATCHED') {
+          const netConnect = agent[kGetNetConnect]()
+          if (netConnect === false) {
+            throw new MockNotMatchedError(`${error.message}: subsequent request to origin ${origin} was not allowed (net.connect disabled)`)
+          }
+          if (checkNetConnect(netConnect, origin)) {
+            originalDispatch.call(this, opts, handler)
+          } else {
+            throw new MockNotMatchedError(`${error.message}: subsequent request to origin ${origin} was not allowed (net.connect is not enabled for this origin)`)
+          }
+        } else {
+          throw error
+        }
+      }
+    } else {
+      originalDispatch.call(this, opts, handler)
+    }
+  }
+}
+
+function checkNetConnect (netConnect, origin) {
+  const url = new URL(origin)
+  if (netConnect === true) {
+    return true
+  } else if (Array.isArray(netConnect) && netConnect.some((matcher) => matchValue(matcher, url.host))) {
+    return true
+  }
+  return false
+}
+
+function normalizeOrigin (origin) {
+  if (typeof origin !== 'string' && !(origin instanceof URL)) {
+    return origin
+  }
+
+  if (origin instanceof URL) {
+    return origin.origin
+  }
+
+  return origin.toLowerCase()
+}
+
+function buildAndValidateMockOptions (opts) {
+  const { agent, ...mockOptions } = opts
+
+  if ('enableCallHistory' in mockOptions && typeof mockOptions.enableCallHistory !== 'boolean') {
+    throw new InvalidArgumentError('options.enableCallHistory must to be a boolean')
+  }
+
+  if ('acceptNonStandardSearchParameters' in mockOptions && typeof mockOptions.acceptNonStandardSearchParameters !== 'boolean') {
+    throw new InvalidArgumentError('options.acceptNonStandardSearchParameters must to be a boolean')
+  }
+
+  if ('ignoreTrailingSlash' in mockOptions && typeof mockOptions.ignoreTrailingSlash !== 'boolean') {
+    throw new InvalidArgumentError('options.ignoreTrailingSlash must to be a boolean')
+  }
+
+  return mockOptions
+}
+
+module.exports = {
+  getResponseData,
+  getMockDispatch,
+  addMockDispatch,
+  deleteMockDispatch,
+  buildKey,
+  generateKeyValues,
+  matchValue,
+  getResponse,
+  getStatusText,
+  mockDispatch,
+  buildMockDispatch,
+  checkNetConnect,
+  buildAndValidateMockOptions,
+  getHeaderByName,
+  buildHeadersFromArray,
+  normalizeSearchParams,
+  normalizeOrigin
+}