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325 lines
8.4 KiB
JavaScript
325 lines
8.4 KiB
JavaScript
/* Test adapted from Alex Vincent's XHR2 timeout tests, written for Mozilla.
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https://hg.mozilla.org/mozilla-central/file/tip/content/base/test/
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Released into the public domain or under BSD, according to
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https://bugzilla.mozilla.org/show_bug.cgi?id=525816#c86
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*/
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/* Notes:
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- All times are expressed in milliseconds in this test suite.
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- Test harness code is at the end of this file.
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- We generate only one request at a time, to avoid overloading the HTTP
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request handlers.
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*/
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var TIME_NORMAL_LOAD = 5000;
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var TIME_LATE_TIMEOUT = 4000;
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var TIME_XHR_LOAD = 3000;
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var TIME_REGULAR_TIMEOUT = 2000;
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var TIME_SYNC_TIMEOUT = 1000;
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var TIME_DELAY = 1000;
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/*
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* This should point to a resource that responds with a text/plain resource after a delay of TIME_XHR_LOAD milliseconds.
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*/
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var STALLED_REQUEST_URL = "delay.py?ms=" + (TIME_XHR_LOAD);
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var inWorker = false;
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try {
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inWorker = !(self instanceof Window);
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} catch (e) {
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inWorker = true;
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}
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if (!inWorker)
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STALLED_REQUEST_URL = "resources/" + STALLED_REQUEST_URL;
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function message(obj) {
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if (inWorker)
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self.postMessage(obj);
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else
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self.postMessage(obj, "*");
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}
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function is(got, expected, msg) {
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var obj = {};
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obj.type = "is";
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obj.got = got;
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obj.expected = expected;
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obj.msg = msg;
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message(obj);
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}
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function ok(bool, msg) {
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var obj = {};
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obj.type = "ok";
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obj.bool = bool;
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obj.msg = msg;
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message(obj);
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}
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/**
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* Generate and track results from a XMLHttpRequest with regards to timeouts.
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*
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* @param {String} id The test description.
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* @param {Number} timeLimit The initial setting for the request timeout.
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* @param {Number} resetAfter (Optional) The time after sending the request, to
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* reset the timeout.
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* @param {Number} resetTo (Optional) The delay to reset the timeout to.
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*
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* @note The actual testing takes place in handleEvent(event).
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* The requests are generated in startXHR().
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*
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* @note If resetAfter and resetTo are omitted, only the initial timeout setting
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* applies.
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*
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* @constructor
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* @implements DOMEventListener
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*/
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function RequestTracker(async, id, timeLimit /*[, resetAfter, resetTo]*/) {
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this.async = async;
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this.id = id;
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this.timeLimit = timeLimit;
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if (arguments.length > 3) {
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this.mustReset = true;
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this.resetAfter = arguments[3];
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this.resetTo = arguments[4];
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}
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this.hasFired = false;
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}
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RequestTracker.prototype = {
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/**
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* Start the XMLHttpRequest!
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*/
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startXHR: function() {
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var req = new XMLHttpRequest();
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this.request = req;
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req.open("GET", STALLED_REQUEST_URL, this.async);
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var me = this;
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function handleEvent(e) { return me.handleEvent(e); };
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req.onerror = handleEvent;
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req.onload = handleEvent;
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req.onabort = handleEvent;
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req.ontimeout = handleEvent;
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req.timeout = this.timeLimit;
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if (this.mustReset) {
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var resetTo = this.resetTo;
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self.setTimeout(function() {
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req.timeout = resetTo;
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}, this.resetAfter);
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}
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try {
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req.send(null);
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}
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catch (e) {
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// Synchronous case in workers.
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ok(!this.async && this.timeLimit < TIME_XHR_LOAD && e.name == "TimeoutError", "Unexpected error: " + e);
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TestCounter.testComplete();
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}
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},
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/**
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* Get a message describing this test.
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*
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* @returns {String} The test description.
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*/
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getMessage: function() {
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var rv = this.id + ", ";
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if (this.mustReset) {
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rv += "original timeout at " + this.timeLimit + ", ";
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rv += "reset at " + this.resetAfter + " to " + this.resetTo;
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}
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else {
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rv += "timeout scheduled at " + this.timeLimit;
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}
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return rv;
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},
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/**
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* Check the event received, and if it's the right (and only) one we get.
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*
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* @param {DOMProgressEvent} evt An event of type "load" or "timeout".
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*/
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handleEvent: function(evt) {
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if (this.hasFired) {
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ok(false, "Only one event should fire: " + this.getMessage());
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return;
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}
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this.hasFired = true;
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var type = evt.type, expectedType;
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// The XHR responds after TIME_XHR_LOAD milliseconds with a load event.
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var timeLimit = this.mustReset && (this.resetAfter < Math.min(TIME_XHR_LOAD, this.timeLimit)) ?
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this.resetTo :
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this.timeLimit;
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if ((timeLimit == 0) || (timeLimit >= TIME_XHR_LOAD)) {
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expectedType = "load";
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}
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else {
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expectedType = "timeout";
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}
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is(type, expectedType, this.getMessage());
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TestCounter.testComplete();
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}
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};
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/**
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* Generate and track XMLHttpRequests which will have abort() called on.
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*
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* @param shouldAbort {Boolean} True if we should call abort at all.
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* @param abortDelay {Number} The time in ms to wait before calling abort().
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*/
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function AbortedRequest(shouldAbort, abortDelay) {
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this.shouldAbort = shouldAbort;
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this.abortDelay = abortDelay;
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this.hasFired = false;
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}
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AbortedRequest.prototype = {
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/**
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* Start the XMLHttpRequest!
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*/
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startXHR: function() {
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var req = new XMLHttpRequest();
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this.request = req;
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req.open("GET", STALLED_REQUEST_URL);
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var _this = this;
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function handleEvent(e) { return _this.handleEvent(e); };
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req.onerror = handleEvent;
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req.onload = handleEvent;
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req.onabort = handleEvent;
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req.ontimeout = handleEvent;
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req.timeout = TIME_REGULAR_TIMEOUT;
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function abortReq() {
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req.abort();
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}
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if (!this.shouldAbort) {
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self.setTimeout(function() {
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try {
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_this.noEventsFired();
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}
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catch (e) {
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ok(false, "Unexpected error: " + e);
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TestCounter.testComplete();
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}
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}, TIME_NORMAL_LOAD);
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}
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else {
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// Abort events can only be triggered on sent requests.
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req.send();
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if (this.abortDelay == -1) {
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abortReq();
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}
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else {
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self.setTimeout(abortReq, this.abortDelay);
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}
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}
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},
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/**
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* Ensure that no events fired at all, especially not our timeout event.
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*/
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noEventsFired: function() {
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ok(!this.hasFired, "No events should fire for an unsent, unaborted request");
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// We're done; if timeout hasn't fired by now, it never will.
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TestCounter.testComplete();
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},
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/**
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* Get a message describing this test.
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*
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* @returns {String} The test description.
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*/
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getMessage: function() {
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return "time to abort is " + this.abortDelay + ", timeout set at " + TIME_REGULAR_TIMEOUT;
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},
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/**
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* Check the event received, and if it's the right (and only) one we get.
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*
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* WebKit fires abort events even for DONE and UNSENT states, which is
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* discussed in http://webkit.org/b/98404
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* That's why we chose to accept secondary "abort" events in this test.
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*
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* @param {DOMProgressEvent} evt An event of type "load" or "timeout".
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*/
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handleEvent: function(evt) {
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if (this.hasFired && evt.type != "abort") {
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ok(false, "Only abort event should fire: " + this.getMessage());
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return;
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}
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var expectedEvent = (this.abortDelay >= TIME_REGULAR_TIMEOUT && !this.hasFired) ? "timeout" : "abort";
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this.hasFired = true;
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is(evt.type, expectedEvent, this.getMessage());
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TestCounter.testComplete();
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}
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};
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var SyncRequestSettingTimeoutAfterOpen = {
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startXHR: function() {
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var pass = false;
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var req = new XMLHttpRequest();
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req.open("GET", STALLED_REQUEST_URL, false);
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try {
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req.timeout = TIME_SYNC_TIMEOUT;
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}
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catch (e) {
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pass = true;
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}
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ok(pass, "Synchronous XHR must not allow a timeout to be set - setting timeout must throw");
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TestCounter.testComplete();
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}
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};
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var SyncRequestSettingTimeoutBeforeOpen = {
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startXHR: function() {
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var pass = false;
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var req = new XMLHttpRequest();
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req.timeout = TIME_SYNC_TIMEOUT;
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try {
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req.open("GET", STALLED_REQUEST_URL, false);
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}
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catch (e) {
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pass = true;
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}
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ok(pass, "Synchronous XHR must not allow a timeout to be set - calling open() after timeout is set must throw");
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TestCounter.testComplete();
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}
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};
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var TestRequests = [];
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// This code controls moving from one test to another.
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var TestCounter = {
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testComplete: function() {
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// Allow for the possibility there are other events coming.
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self.setTimeout(function() {
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TestCounter.next();
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}, TIME_NORMAL_LOAD);
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},
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next: function() {
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var test = TestRequests.shift();
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if (test) {
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test.startXHR();
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}
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else {
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message("done");
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}
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}
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};
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function runTestRequests(testRequests) {
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TestRequests = testRequests;
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TestCounter.next();
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}
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