Ok, very basic, needs refactoring Getting of Request and Access tokens (POST stylee)

works.

spec/lib/jspec.xhr.js

@@ -0,0 +1,193 @@
+
+// JSpec - XHR - Copyright TJ Holowaychuk <tj@vision-media.ca> (MIT Licensed)
+
+(function(){
+  
+  // --- Original XMLHttpRequest
+  
+  var OriginalXMLHttpRequest = 'XMLHttpRequest' in this ? 
+                                 XMLHttpRequest :
+                                   function(){}
+  var OriginalActiveXObject = 'ActiveXObject' in this ?
+                                 ActiveXObject :
+                                   undefined
+                                   
+  // --- MockXMLHttpRequest
+
+  var MockXMLHttpRequest = function() {
+    this.requestHeaders = {}
+  }
+  
+  MockXMLHttpRequest.prototype = {
+    status: 0,
+    async: true,
+    readyState: 0,
+    responseText: '',
+    abort: function(){},
+    onreadystatechange: function(){},
+
+   /**
+    * Return response headers hash.
+    */
+
+    getAllResponseHeaders : function(){
+      return this.responseHeaders
+    },
+    
+    /**
+     * Return case-insensitive value for header _name_.
+     */
+
+    getResponseHeader : function(name) {
+      return this.responseHeaders[name.toLowerCase()]
+    },
+    
+    /**
+     * Set case-insensitive _value_ for header _name_.
+     */
+
+    setRequestHeader : function(name, value) {
+      this.requestHeaders[name.toLowerCase()] = value
+    },
+    
+    /**
+     * Open mock request.
+     */
+
+    open : function(method, url, async, user, password) {
+      this.user = user
+      this.password = password
+      this.url = url
+      this.readyState = 1
+      this.method = method.toUpperCase()
+      if (async != undefined) this.async = async
+      if (this.async) this.onreadystatechange()
+    },
+    
+    /**
+     * Send request _data_.
+     */
+
+    send : function(data) {
+      var self = this
+      this.data = data
+      this.readyState = 4
+      if (this.method == 'HEAD') this.responseText = null
+      this.responseHeaders['content-length'] = (this.responseText || '').length
+      if(this.async) this.onreadystatechange()
+      lastRequest = function(){
+        return self
+      }
+    }
+  }
+  
+  // --- Response status codes
+  
+  JSpec.statusCodes = {
+    100: 'Continue',
+    101: 'Switching Protocols',
+    200: 'OK',
+    201: 'Created',
+    202: 'Accepted',
+    203: 'Non-Authoritative Information',
+    204: 'No Content',
+    205: 'Reset Content',
+    206: 'Partial Content',
+    300: 'Multiple Choice',
+    301: 'Moved Permanently',
+    302: 'Found',
+    303: 'See Other',
+    304: 'Not Modified',
+    305: 'Use Proxy',
+    307: 'Temporary Redirect',
+    400: 'Bad Request',
+    401: 'Unauthorized',
+    402: 'Payment Required',
+    403: 'Forbidden',
+    404: 'Not Found',
+    405: 'Method Not Allowed',
+    406: 'Not Acceptable',
+    407: 'Proxy Authentication Required',
+    408: 'Request Timeout',
+    409: 'Conflict',
+    410: 'Gone',
+    411: 'Length Required',
+    412: 'Precondition Failed',
+    413: 'Request Entity Too Large',
+    414: 'Request-URI Too Long',
+    415: 'Unsupported Media Type',
+    416: 'Requested Range Not Satisfiable',
+    417: 'Expectation Failed',
+    422: 'Unprocessable Entity',
+    500: 'Internal Server Error',
+    501: 'Not Implemented',
+    502: 'Bad Gateway',
+    503: 'Service Unavailable',
+    504: 'Gateway Timeout',
+    505: 'HTTP Version Not Supported'
+  }
+  
+  /**
+   * Mock XMLHttpRequest requests.
+   *
+   *   mockRequest().and_return('some data', 'text/plain', 200, { 'X-SomeHeader' : 'somevalue' })
+   *
+   * @return {hash}
+   * @api public
+   */
+  
+  function mockRequest() {
+    return { and_return : function(body, type, status, headers) {
+      XMLHttpRequest = MockXMLHttpRequest
+      ActiveXObject = false
+      status = status || 200
+      headers = headers || {}
+      headers['content-type'] = type
+      JSpec.extend(XMLHttpRequest.prototype, {
+        responseText: body,
+        responseHeaders: headers,
+        status: status,
+        statusText: JSpec.statusCodes[status]
+      })
+    }}
+  }
+  
+  /**
+   * Unmock XMLHttpRequest requests.
+   *
+   * @api public
+   */
+  
+  function unmockRequest() {
+    XMLHttpRequest = OriginalXMLHttpRequest
+    ActiveXObject = OriginalActiveXObject
+  }
+  
+  JSpec.include({
+    name: 'Mock XHR',
+
+    // --- Utilities
+
+    utilities : {
+      mockRequest: mockRequest,
+      unmockRequest: unmockRequest
+    },
+
+    // --- Hooks
+
+    afterSpec : function() {
+      unmockRequest()
+    },
+    
+    // --- DSLs
+    
+    DSLs : {
+      snake : {
+        mock_request: mockRequest,
+        unmock_request: unmockRequest,
+        last_request: function(){ return lastRequest() }
+      }
+    }
+
+  })
+})()