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<!DOCTYPE html>
<html>
<!--
Copyright 2008 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.debug.ErrorHandler</title>
<!-- These paths should be relative to the test -->
<script src="../base.js"></script>
<script>
goog.require('goog.debug.ErrorHandler');
goog.require('goog.testing.jsunit');
goog.require('goog.userAgent');
</script>
</head>
<body>
<script>
var oldGetObjectByName;
// provide our own window that implements our instrumented and
// immediate-call versions of setTimeout and setInterval
var fakeWin = {};
var errorHandler;
function badTimer() {
arguments.callee.called = true;
throw 'die die die';
}
function setUp() {
// On IE, globalEval happens async. So make it synchronous.
goog.globalEval = function(str) {
eval(str);
};
oldGetObjectByName = goog.getObjectByName;
goog.getObjectByName = function(name) {
if (name == 'window') {
return fakeWin;
} else {
return oldGetObjectByName(name);
}
};
fakeWin.setTimeout = function(fn, time) {
fakeWin.setTimeout.called = true;
fakeWin.setTimeout.that = this;
if (goog.isString(fn)) {
eval(fn);
} else {
fn();
}
};
fakeWin.setInterval = function(fn, time) {
fakeWin.setInterval.called = true;
fakeWin.setInterval.that = this;
if (goog.isString(fn)) {
eval(fn);
} else {
fn();
}
};
// just record the exception in the error handler when it happens
errorHandler = new goog.debug.ErrorHandler(function(ex) {
this.ex = ex;
});
}
function tearDown() {
goog.dispose(errorHandler);
errorHandler = null;
goog.getObjectByName = oldGetObjectByName;
delete badTimer['__protected__'];
}
function testWrapSetTimeout() {
errorHandler.protectWindowSetTimeout();
var caught;
try {
fakeWin.setTimeout(badTimer, 3);
} catch (ex) {
caught = ex;
}
assertSetTimeoutError(caught);
}
function testWrapSetTimeoutWithString() {
errorHandler.protectWindowSetTimeout();
var caught;
try {
fakeWin.setTimeout('badTimer()', 3);
} catch (ex) {
caught = ex;
}
assertSetTimeoutError(caught);
}
function testWrapSetInterval() {
errorHandler.protectWindowSetInterval();
var caught;
try {
fakeWin.setInterval(badTimer, 3);
} catch (ex) {
caught = ex;
}
assertSetIntervalError(caught);
}
function testWrapSetIntervalWithString() {
errorHandler.protectWindowSetInterval();
var caught;
try {
fakeWin.setInterval('badTimer()', 3);
} catch (ex) {
caught = ex;
}
assertSetIntervalError(caught);
}
function testDisposal() {
fakeWin = goog.getObjectByName('window');
var originalSetTimeout = fakeWin.setTimeout;
var originalSetInterval = fakeWin.setInterval;
errorHandler.protectWindowSetTimeout();
errorHandler.protectWindowSetInterval();
assertNotEquals(originalSetTimeout, fakeWin.setTimeout);
assertNotEquals(originalSetInterval, fakeWin.setInterval);
errorHandler.dispose();
assertEquals(originalSetTimeout, fakeWin.setTimeout);
assertEquals(originalSetInterval, fakeWin.setInterval);
}
function testUnwrap() {
var fn = function() {};
var wrappedFn = errorHandler.wrap(fn);
assertNotEquals(wrappedFn, fn);
assertEquals(fn, errorHandler.unwrap(fn));
assertEquals(fn, errorHandler.unwrap(wrappedFn));
}
function testStackPreserved() {
var e;
var hasStacks;
function specialFunctionName() {
var e = Error();
hasStacks = !!e.stack;
throw e;
};
var wrappedFn = errorHandler.wrap(specialFunctionName);
try {
wrappedFn();
} catch (exception) {
e = exception
}
assertTrue(!!e);
if (hasStacks) {
assertContains('specialFunctionName', e.stack);
}
}
function assertSetTimeoutError(caught) {
assertMethodCalledHelper('setTimeout', caught);
}
function assertSetIntervalError(caught) {
assertMethodCalledHelper('setInterval', caught);
}
function assertMethodCalledHelper(method, caught) {
assertTrue('exception not thrown', !!caught);
assertEquals('exception not caught by error handler',
caught.cause, errorHandler.ex);
assertTrue('fake ' + method + ' not called',
!!fakeWin[method].called);
assertTrue('"this" not passed to original ' + method,
fakeWin[method].that === fakeWin);
}
</script>
</body>
</html>
|
