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<!DOCTYPE html>
<html>
<!--
Copyright 2007 The Closure Library Authors. All Rights Reserved.
Use of this source code is governed by the Apache License, Version 2.0.
See the COPYING file for details.
-->
<!--
-->
<head>
<meta http-equiv="X-UA-Compatible" content="IE=edge">
<title>Closure Unit Tests - goog.net.Jsonp</title>
<script src="../base.js"></script>
<script>
goog.require('goog.dom');
goog.require('goog.net.Jsonp');
goog.require('goog.testing.jsunit');
goog.require('goog.userAgent');
goog.require('goog.testing.recordFunction');
goog.require('goog.testing.PropertyReplacer');
</script>
</head>
<body>
<script>
// Global vars to facilitate a shared set up function.
var timeoutWasCalled;
var timeoutHandler;
var fakeUrl = 'http://fake-site.eek/';
var originalTimeout;
function setUp() {
timeoutWasCalled = false;
timeoutHandler = null;
originalTimeout = window.setTimeout;
window.setTimeout = function(handler, time) {
timeoutWasCalled = true;
timeoutHandler = handler;
};
}
// Firefox throws a JS error when a script is not found. We catch that here and
// ensure the test case doesn't fail because of it.
var originalOnError = window.onerror;
window.onerror = function(msg, url, line) {
// TODO(user): Safari 3 on the farm returns an object instead of the typcial
// params. Pass through errors for safari for now.
if (goog.userAgent.WEBKIT ||
msg == 'Error loading script' && url.indexOf('fake-site') != -1) {
return true;
} else {
return originalOnError && originalOnError(msg, url, line);
}
};
function tearDown() {
window.setTimeout = originalTimeout;
}
// Quick function records the before-state of the DOM, and then return a
// a function to check that XDC isn't leaving stuff behind.
function newCleanupGuard() {
var bodyChildCount = document.body.childNodes.length;
return function() {
// let any timeout queues finish before we check these:
window.setTimeout(function() {
var propCounter = 0;
// All callbacks should have been deleted or be the null function.
for (var id in goog.global[goog.net.Jsonp.CALLBACKS]) {
if (goog.global[goog.net.Jsonp.CALLBACKS][id] != goog.nullFunction) {
propCounter++;
}
}
assertEquals(
'script cleanup', bodyChildCount, document.body.childNodes.length);
assertEquals('window jsonp array empty', 0, propCounter);
}, 0);
}
}
function getScriptElement(result) {
return result.deferred_.defaultScope_.script_;
}
// Check that send function is sane when things go well.
function testSend() {
var replyReceived;
var jsonp = new goog.net.Jsonp(fakeUrl);
var checkCleanup = newCleanupGuard();
var userCallback = function(data) {
replyReceived = data;
}
var payload = {atisket: 'atasket', basket: 'yellow'};
var result = jsonp.send(payload, userCallback);
var script = getScriptElement(result);
assertNotNull('script created', script);
assertEquals('encoding is utf-8', 'UTF-8', script.charset);
// Check that the URL matches our payload.
assertTrue('payload in url', script.src.indexOf('basket=yellow') > -1);
assertTrue('server url', script.src.indexOf(fakeUrl) == 0);
// Now, we have to track down the name of the callback function, so we can
// call that to simulate a returned request + verify that the callback
// function does not break if it receives a second unexpected parameter.
var callbackName = /callback=([^&]+)/.exec(script.src)[1];
var callbackFunc = eval(callbackName);
callbackFunc({some: 'data', another: ['data', 'right', 'here']},
'unexpected');
assertEquals('input was received', 'right', replyReceived.another[1]);
// Because the callbackFunc calls cleanUp_ and that calls setTimeout which
// we have overwritten, we have to call the timeoutHandler to actually do
// the cleaning.
timeoutHandler();
checkCleanup();
timeoutHandler();
}
// Check that send function is sane when things go well.
function testSendWhenCallbackHasTwoParameters() {
var replyReceived, replyReceived2;
var jsonp = new goog.net.Jsonp(fakeUrl);
var checkCleanup = newCleanupGuard();
var userCallback = function(data, opt_data2) {
replyReceived = data;
replyReceived2 = opt_data2;
}
var payload = {atisket: 'atasket', basket: 'yellow'};
var result = jsonp.send(payload, userCallback);
var script = getScriptElement(result);
// Test a callback function that receives two parameters.
var callbackName = /callback=([^&]+)/.exec(script.src)[1];
var callbackFunc = eval(callbackName);
callbackFunc('param1', {some: 'data', another: ['data', 'right', 'here']});
assertEquals('input was received', 'param1', replyReceived);
assertEquals('second input was received', 'right',
replyReceived2.another[1]);
// Because the callbackFunc calls cleanUp_ and that calls setTimeout which
// we have overwritten, we have to call the timeoutHandler to actually do
// the cleaning.
timeoutHandler();
checkCleanup();
timeoutHandler();
}
// Check that send function works correctly when callback param value is
// specified.
function testSendWithCallbackParamValue() {
var replyReceived;
var jsonp = new goog.net.Jsonp(fakeUrl);
var checkCleanup = newCleanupGuard();
var userCallback = function(data) {
replyReceived = data;
}
var payload = {atisket: 'atasket', basket: 'yellow'};
var result = jsonp.send(payload, userCallback, undefined, 'dummyId');
var script = getScriptElement(result);
assertNotNull('script created', script);
assertEquals('encoding is utf-8', 'UTF-8', script.charset);
// Check that the URL matches our payload.
assertTrue('payload in url', script.src.indexOf('basket=yellow') > -1);
assertTrue('dummyId in url',
script.src.indexOf('callback=_callbacks_.dummyId') > -1);
assertTrue('server url', script.src.indexOf(fakeUrl) == 0);
// Now, we simulate a returned request using the known callback function
// name.
var callbackFunc = _callbacks_.dummyId;
callbackFunc({some: 'data', another: ['data', 'right', 'here']});
assertEquals('input was received', 'right', replyReceived.another[1]);
// Because the callbackFunc calls cleanUp_ and that calls setTimeout which
// we have overwritten, we have to call the timeoutHandler to actually do
// the cleaning.
timeoutHandler();
checkCleanup();
timeoutHandler();
}
// Check that the send function is sane when the thing goes south.
function testSendFailure() {
var replyReceived = false;
var errorReplyReceived = false;
var jsonp = new goog.net.Jsonp(fakeUrl);
var checkCleanup = newCleanupGuard();
var userCallback = function(data) {
replyReceived = data;
}
var userErrorCallback = function(data) {
errorReplyReceived = data;
}
var payload = { justa: 'test' };
jsonp.send(payload, userCallback, userErrorCallback);
assertTrue('timeout called', timeoutWasCalled);
// Now, simulate the time running out, so we go into error mode.
// After jsonp.send(), the timeoutHandler now is the Jsonp.cleanUp_ function.
timeoutHandler();
// But that function also calls a setTimeout(), so it changes the timeout
// handler once again, so to actually clean up we have to call the
// timeoutHandler() once again. Fun!
timeoutHandler();
assertFalse('standard callback not called', replyReceived);
// The user's error handler should be called back with the same payload
// passed back to it.
assertEquals('error handler called', 'test', errorReplyReceived.justa);
// Check that the relevant cleanup has occurred.
checkCleanup();
// Check cleanup just calls setTimeout so we have to call the handler to
// actually check that the cleanup worked.
timeoutHandler();
}
// Check that a cancel call works and cleans up after itself.
function testCancel() {
var checkCleanup = newCleanupGuard();
var successCalled = false;
var successCallback = function() {
successCalled = true;
};
// Send and cancel a request, then make sure it was cleaned up.
var jsonp = new goog.net.Jsonp(fakeUrl);
var requestObject = jsonp.send({test: 'foo'}, successCallback);
jsonp.cancel(requestObject);
for (var key in goog.global[goog.net.Jsonp.CALLBACKS]) {
assertNotEquals('The success callback should have been removed',
goog.global[goog.net.Jsonp.CALLBACKS][key],
successCallback);
}
// Make sure cancelling removes the script tag
checkCleanup();
timeoutHandler();
}
function testPayloadParameters() {
var checkCleanup = newCleanupGuard();
var jsonp = new goog.net.Jsonp(fakeUrl);
var result = jsonp.send({
'foo': 3,
'bar': 'baz'
});
var script = getScriptElement(result);
assertEquals('Payload parameters should have been added to url.',
fakeUrl + '?foo=3&bar=baz',
script.src);
checkCleanup();
timeoutHandler();
}
function testOptionalPayload() {
var checkCleanup = newCleanupGuard();
var errorCallback = goog.testing.recordFunction();
var stubs = new goog.testing.PropertyReplacer();
stubs.set(goog.global, 'setTimeout', function(errorHandler) {
errorHandler();
});
var jsonp = new goog.net.Jsonp(fakeUrl);
var result = jsonp.send(null, null, errorCallback);
var script = getScriptElement(result);
assertEquals('Parameters should not have been added to url.',
fakeUrl, script.src);
// Clear the script hooks because we triggered the error manually.
script.onload = goog.nullFunction;
script.onerror = goog.nullFunction;
script.onreadystatechange = goog.nullFunction;
var errorCallbackArguments = errorCallback.getLastCall().getArguments();
assertEquals(1, errorCallbackArguments.length);
assertNull(errorCallbackArguments[0]);
checkCleanup();
stubs.reset();
}
</script>
</body>
</html>
|
