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fake_xml_http_request.js
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fake_xml_http_request.js
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/**
* @depend core.js
* @depend ../extend.js
* @depend event.js
* @depend ../log_error.js
*/
/**
* Fake XMLHttpRequest object
*
* @author Christian Johansen (christian@cjohansen.no)
* @license BSD
*
* Copyright (c) 2010-2013 Christian Johansen
*/
"use strict";
(function (global) {
var supportsProgress = typeof ProgressEvent !== "undefined";
var supportsCustomEvent = typeof CustomEvent !== "undefined";
var sinonXhr = { XMLHttpRequest: global.XMLHttpRequest };
sinonXhr.GlobalXMLHttpRequest = global.XMLHttpRequest;
sinonXhr.GlobalActiveXObject = global.ActiveXObject;
sinonXhr.supportsActiveX = typeof sinonXhr.GlobalActiveXObject != "undefined";
sinonXhr.supportsXHR = typeof sinonXhr.GlobalXMLHttpRequest != "undefined";
sinonXhr.workingXHR = sinonXhr.supportsXHR ? sinonXhr.GlobalXMLHttpRequest : sinonXhr.supportsActiveX
? function () { return new sinonXhr.GlobalActiveXObject("MSXML2.XMLHTTP.3.0") } : false;
sinonXhr.supportsCORS = sinonXhr.supportsXHR && "withCredentials" in (new sinonXhr.GlobalXMLHttpRequest());
/*jsl:ignore*/
var unsafeHeaders = {
"Accept-Charset": true,
"Accept-Encoding": true,
Connection: true,
"Content-Length": true,
Cookie: true,
Cookie2: true,
"Content-Transfer-Encoding": true,
Date: true,
Expect: true,
Host: true,
"Keep-Alive": true,
Referer: true,
TE: true,
Trailer: true,
"Transfer-Encoding": true,
Upgrade: true,
"User-Agent": true,
Via: true
};
/*jsl:end*/
function FakeXMLHttpRequest() {
this.readyState = FakeXMLHttpRequest.UNSENT;
this.requestHeaders = {};
this.requestBody = null;
this.status = 0;
this.statusText = "";
this.upload = new UploadProgress();
if (sinonXhr.supportsCORS) {
this.withCredentials = false;
}
var xhr = this;
var events = ["loadstart", "load", "abort", "loadend"];
function addEventListener(eventName) {
xhr.addEventListener(eventName, function (event) {
var listener = xhr["on" + eventName];
if (listener && typeof listener == "function") {
listener.call(this, event);
}
});
}
for (var i = events.length - 1; i >= 0; i--) {
addEventListener(events[i]);
}
if (typeof FakeXMLHttpRequest.onCreate == "function") {
FakeXMLHttpRequest.onCreate(this);
}
}
// An upload object is created for each
// FakeXMLHttpRequest and allows upload
// events to be simulated using uploadProgress
// and uploadError.
function UploadProgress() {
this.eventListeners = {
progress: [],
load: [],
abort: [],
error: []
}
}
UploadProgress.prototype.addEventListener = function addEventListener(event, listener) {
this.eventListeners[event].push(listener);
};
UploadProgress.prototype.removeEventListener = function removeEventListener(event, listener) {
var listeners = this.eventListeners[event] || [];
for (var i = 0, l = listeners.length; i < l; ++i) {
if (listeners[i] == listener) {
return listeners.splice(i, 1);
}
}
};
UploadProgress.prototype.dispatchEvent = function dispatchEvent(event) {
var listeners = this.eventListeners[event.type] || [];
for (var i = 0, listener; (listener = listeners[i]) != null; i++) {
listener(event);
}
};
function verifyState(xhr) {
if (xhr.readyState !== FakeXMLHttpRequest.OPENED) {
throw new Error("INVALID_STATE_ERR");
}
if (xhr.sendFlag) {
throw new Error("INVALID_STATE_ERR");
}
}
function getHeader(headers, header) {
header = header.toLowerCase();
for (var h in headers) {
if (h.toLowerCase() == header) {
return h;
}
}
return null;
}
// filtering to enable a white-list version of Sinon FakeXhr,
// where whitelisted requests are passed through to real XHR
function each(collection, callback) {
if (!collection) {
return;
}
for (var i = 0, l = collection.length; i < l; i += 1) {
callback(collection[i]);
}
}
function some(collection, callback) {
for (var index = 0; index < collection.length; index++) {
if (callback(collection[index]) === true) {
return true;
}
}
return false;
}
// largest arity in XHR is 5 - XHR#open
var apply = function (obj, method, args) {
switch (args.length) {
case 0: return obj[method]();
case 1: return obj[method](args[0]);
case 2: return obj[method](args[0], args[1]);
case 3: return obj[method](args[0], args[1], args[2]);
case 4: return obj[method](args[0], args[1], args[2], args[3]);
case 5: return obj[method](args[0], args[1], args[2], args[3], args[4]);
}
};
FakeXMLHttpRequest.filters = [];
FakeXMLHttpRequest.addFilter = function addFilter(fn) {
this.filters.push(fn)
};
var IE6Re = /MSIE 6/;
FakeXMLHttpRequest.defake = function defake(fakeXhr, xhrArgs) {
var xhr = new sinonXhr.workingXHR();
each([
"open",
"setRequestHeader",
"send",
"abort",
"getResponseHeader",
"getAllResponseHeaders",
"addEventListener",
"overrideMimeType",
"removeEventListener"
], function (method) {
fakeXhr[method] = function () {
return apply(xhr, method, arguments);
};
});
var copyAttrs = function (args) {
each(args, function (attr) {
try {
fakeXhr[attr] = xhr[attr]
} catch (e) {
if (!IE6Re.test(navigator.userAgent)) {
throw e;
}
}
});
};
var stateChange = function stateChange() {
fakeXhr.readyState = xhr.readyState;
if (xhr.readyState >= FakeXMLHttpRequest.HEADERS_RECEIVED) {
copyAttrs(["status", "statusText"]);
}
if (xhr.readyState >= FakeXMLHttpRequest.LOADING) {
copyAttrs(["responseText", "response"]);
}
if (xhr.readyState === FakeXMLHttpRequest.DONE) {
copyAttrs(["responseXML"]);
}
if (fakeXhr.onreadystatechange) {
fakeXhr.onreadystatechange.call(fakeXhr, { target: fakeXhr });
}
};
if (xhr.addEventListener) {
for (var event in fakeXhr.eventListeners) {
if (fakeXhr.eventListeners.hasOwnProperty(event)) {
each(fakeXhr.eventListeners[event], function (handler) {
xhr.addEventListener(event, handler);
});
}
}
xhr.addEventListener("readystatechange", stateChange);
} else {
xhr.onreadystatechange = stateChange;
}
apply(xhr, "open", xhrArgs);
};
FakeXMLHttpRequest.useFilters = false;
function verifyRequestOpened(xhr) {
if (xhr.readyState != FakeXMLHttpRequest.OPENED) {
throw new Error("INVALID_STATE_ERR - " + xhr.readyState);
}
}
function verifyRequestSent(xhr) {
if (xhr.readyState == FakeXMLHttpRequest.DONE) {
throw new Error("Request done");
}
}
function verifyHeadersReceived(xhr) {
if (xhr.async && xhr.readyState != FakeXMLHttpRequest.HEADERS_RECEIVED) {
throw new Error("No headers received");
}
}
function verifyResponseBodyType(body) {
if (typeof body != "string") {
var error = new Error("Attempted to respond to fake XMLHttpRequest with " +
body + ", which is not a string.");
error.name = "InvalidBodyException";
throw error;
}
}
FakeXMLHttpRequest.parseXML = function parseXML(text) {
var xmlDoc;
if (typeof DOMParser != "undefined") {
var parser = new DOMParser();
xmlDoc = parser.parseFromString(text, "text/xml");
} else {
xmlDoc = new ActiveXObject("Microsoft.XMLDOM");
xmlDoc.async = "false";
xmlDoc.loadXML(text);
}
return xmlDoc;
};
FakeXMLHttpRequest.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"
};
function makeApi(sinon) {
sinon.xhr = sinonXhr;
sinon.extend(FakeXMLHttpRequest.prototype, sinon.EventTarget, {
async: true,
open: function open(method, url, async, username, password) {
this.method = method;
this.url = url;
this.async = typeof async == "boolean" ? async : true;
this.username = username;
this.password = password;
this.responseText = null;
this.responseXML = null;
this.requestHeaders = {};
this.sendFlag = false;
if (FakeXMLHttpRequest.useFilters === true) {
var xhrArgs = arguments;
var defake = some(FakeXMLHttpRequest.filters, function (filter) {
return filter.apply(this, xhrArgs)
});
if (defake) {
return FakeXMLHttpRequest.defake(this, arguments);
}
}
this.readyStateChange(FakeXMLHttpRequest.OPENED);
},
readyStateChange: function readyStateChange(state) {
this.readyState = state;
if (typeof this.onreadystatechange == "function") {
try {
this.onreadystatechange();
} catch (e) {
sinon.logError("Fake XHR onreadystatechange handler", e);
}
}
this.dispatchEvent(new sinon.Event("readystatechange"));
switch (this.readyState) {
case FakeXMLHttpRequest.DONE:
this.dispatchEvent(new sinon.Event("load", false, false, this));
this.dispatchEvent(new sinon.Event("loadend", false, false, this));
this.upload.dispatchEvent(new sinon.Event("load", false, false, this));
if (supportsProgress) {
this.upload.dispatchEvent(new sinon.ProgressEvent("progress", {loaded: 100, total: 100}));
}
break;
}
},
setRequestHeader: function setRequestHeader(header, value) {
verifyState(this);
if (unsafeHeaders[header] || /^(Sec-|Proxy-)/.test(header)) {
throw new Error("Refused to set unsafe header \"" + header + "\"");
}
if (this.requestHeaders[header]) {
this.requestHeaders[header] += "," + value;
} else {
this.requestHeaders[header] = value;
}
},
// Helps testing
setResponseHeaders: function setResponseHeaders(headers) {
verifyRequestOpened(this);
this.responseHeaders = {};
for (var header in headers) {
if (headers.hasOwnProperty(header)) {
this.responseHeaders[header] = headers[header];
}
}
if (this.async) {
this.readyStateChange(FakeXMLHttpRequest.HEADERS_RECEIVED);
} else {
this.readyState = FakeXMLHttpRequest.HEADERS_RECEIVED;
}
},
// Currently treats ALL data as a DOMString (i.e. no Document)
send: function send(data) {
verifyState(this);
if (!/^(get|head)$/i.test(this.method)) {
var contentType = getHeader(this.requestHeaders, "Content-Type");
if (this.requestHeaders[contentType]) {
var value = this.requestHeaders[contentType].split(";");
this.requestHeaders[contentType] = value[0] + ";charset=utf-8";
} else {
this.requestHeaders["Content-Type"] = "text/plain;charset=utf-8";
}
this.requestBody = data;
}
this.errorFlag = false;
this.sendFlag = this.async;
this.readyStateChange(FakeXMLHttpRequest.OPENED);
if (typeof this.onSend == "function") {
this.onSend(this);
}
this.dispatchEvent(new sinon.Event("loadstart", false, false, this));
},
abort: function abort() {
this.aborted = true;
this.responseText = null;
this.errorFlag = true;
this.requestHeaders = {};
if (this.readyState > FakeXMLHttpRequest.UNSENT && this.sendFlag) {
this.readyStateChange(FakeXMLHttpRequest.DONE);
this.sendFlag = false;
}
this.readyState = FakeXMLHttpRequest.UNSENT;
this.dispatchEvent(new sinon.Event("abort", false, false, this));
this.upload.dispatchEvent(new sinon.Event("abort", false, false, this));
if (typeof this.onerror === "function") {
this.onerror();
}
},
getResponseHeader: function getResponseHeader(header) {
if (this.readyState < FakeXMLHttpRequest.HEADERS_RECEIVED) {
return null;
}
if (/^Set-Cookie2?$/i.test(header)) {
return null;
}
header = getHeader(this.responseHeaders, header);
return this.responseHeaders[header] || null;
},
getAllResponseHeaders: function getAllResponseHeaders() {
if (this.readyState < FakeXMLHttpRequest.HEADERS_RECEIVED) {
return "";
}
var headers = "";
for (var header in this.responseHeaders) {
if (this.responseHeaders.hasOwnProperty(header) &&
!/^Set-Cookie2?$/i.test(header)) {
headers += header + ": " + this.responseHeaders[header] + "\r\n";
}
}
return headers;
},
setResponseBody: function setResponseBody(body) {
verifyRequestSent(this);
verifyHeadersReceived(this);
verifyResponseBodyType(body);
var chunkSize = this.chunkSize || 10;
var index = 0;
this.responseText = "";
do {
if (this.async) {
this.readyStateChange(FakeXMLHttpRequest.LOADING);
}
this.responseText += body.substring(index, index + chunkSize);
index += chunkSize;
} while (index < body.length);
var type = this.getResponseHeader("Content-Type");
if (this.responseText &&
(!type || /(text\/xml)|(application\/xml)|(\+xml)/.test(type))) {
try {
this.responseXML = FakeXMLHttpRequest.parseXML(this.responseText);
} catch (e) {
// Unable to parse XML - no biggie
}
}
this.readyStateChange(FakeXMLHttpRequest.DONE);
},
respond: function respond(status, headers, body) {
this.status = typeof status == "number" ? status : 200;
this.statusText = FakeXMLHttpRequest.statusCodes[this.status];
this.setResponseHeaders(headers || {});
this.setResponseBody(body || "");
},
uploadProgress: function uploadProgress(progressEventRaw) {
if (supportsProgress) {
this.upload.dispatchEvent(new sinon.ProgressEvent("progress", progressEventRaw));
}
},
uploadError: function uploadError(error) {
if (supportsCustomEvent) {
this.upload.dispatchEvent(new sinon.CustomEvent("error", {detail: error}));
}
}
});
sinon.extend(FakeXMLHttpRequest, {
UNSENT: 0,
OPENED: 1,
HEADERS_RECEIVED: 2,
LOADING: 3,
DONE: 4
});
sinon.useFakeXMLHttpRequest = function () {
FakeXMLHttpRequest.restore = function restore(keepOnCreate) {
if (sinonXhr.supportsXHR) {
global.XMLHttpRequest = sinonXhr.GlobalXMLHttpRequest;
}
if (sinonXhr.supportsActiveX) {
global.ActiveXObject = sinonXhr.GlobalActiveXObject;
}
delete FakeXMLHttpRequest.restore;
if (keepOnCreate !== true) {
delete FakeXMLHttpRequest.onCreate;
}
};
if (sinonXhr.supportsXHR) {
global.XMLHttpRequest = FakeXMLHttpRequest;
}
if (sinonXhr.supportsActiveX) {
global.ActiveXObject = function ActiveXObject(objId) {
if (objId == "Microsoft.XMLHTTP" || /^Msxml2\.XMLHTTP/i.test(objId)) {
return new FakeXMLHttpRequest();
}
return new sinonXhr.GlobalActiveXObject(objId);
};
}
return FakeXMLHttpRequest;
};
sinon.FakeXMLHttpRequest = FakeXMLHttpRequest;
}
var isNode = typeof module !== "undefined" && module.exports && typeof require == "function";
var isAMD = typeof define === "function" && typeof define.amd === "object" && define.amd;
function loadDependencies(require, exports, module) {
var sinon = require("./core");
require("./event");
makeApi(sinon);
module.exports = sinon;
}
if (isAMD) {
define(loadDependencies);
} else if (isNode) {
loadDependencies(require, module.exports, module);
} else if (typeof sinon === "undefined") {
return;
} else {
makeApi(sinon);
}
})(typeof self !== "undefined" ? self : this);