aboutsummaryrefslogtreecommitdiffstats
path: root/test/ng/qSpec.js
diff options
context:
space:
mode:
Diffstat (limited to 'test/ng/qSpec.js')
-rw-r--r--test/ng/qSpec.js831
1 files changed, 831 insertions, 0 deletions
diff --git a/test/ng/qSpec.js b/test/ng/qSpec.js
new file mode 100644
index 00000000..a230d1de
--- /dev/null
+++ b/test/ng/qSpec.js
@@ -0,0 +1,831 @@
+'use strict';
+
+/**
+ http://wiki.commonjs.org/wiki/Promises
+ http://www.slideshare.net/domenicdenicola/callbacks-promises-and-coroutines-oh-my-the-evolution-of-asynchronicity-in-javascript
+
+ Q: https://github.com/kriskowal/q
+ https://github.com/kriskowal/q/blob/master/design/README.js
+ https://github.com/kriskowal/uncommonjs/blob/master/promises/specification.md
+ http://jsconf.eu/2010/speaker/commonjs_i_promise_by_kris_kow.html
+ - good walkthrough of the Q api's and design, jump to 15:30
+
+ twisted: http://twistedmatrix.com/documents/11.0.0/api/twisted.internet.defer.Deferred.html
+ dojo: https://github.com/dojo/dojo/blob/master/_base/Deferred.js
+ http://dojotoolkit.org/api/1.6/dojo/Deferred
+ http://dojotoolkit.org/documentation/tutorials/1.6/promises/
+ when.js: https://github.com/briancavalier/when.js
+ DART: http://www.dartlang.org/docs/api/Promise.html#Promise::Promise
+ http://code.google.com/p/dart/source/browse/trunk/dart/corelib/src/promise.dart
+ http://codereview.chromium.org/8271014/patch/11003/12005
+ https://chromereviews.googleplex.com/3365018/
+ WinJS: http://msdn.microsoft.com/en-us/library/windows/apps/br211867.aspx
+
+ http://download.oracle.com/javase/1.5.0/docs/api/java/util/concurrent/Future.html
+ http://en.wikipedia.org/wiki/Futures_and_promises
+ http://wiki.ecmascript.org/doku.php?id=strawman:deferred_functions
+ http://wiki.ecmascript.org/doku.php?id=strawman:async_functions
+
+
+ http://jsperf.com/throw-vs-return
+*/
+
+describe('q', function() {
+ var q, defer, deferred, promise, log;
+
+ /**
+ * Creates a callback that logs its invocation in `log`.
+ *
+ * @param {(number|string)} name Suffix for 'success' name. e.g. success(1) => success1
+ * @param {*=} returnVal Value that the callback should return. If unspecified, the passed in
+ * value is returned.
+ * @param {boolean=} throwReturnVal If true, the `returnVal` will be thrown rather than returned.
+ */
+ function success(name, returnVal, throwReturnVal) {
+ var returnValDefined = (arguments.length >= 2);
+
+ return function() {
+ name = 'success' + (name || '');
+ var args = toJson(sliceArgs(arguments)).replace(/(^\[|"|\]$)/g, '');
+ log.push(name + '(' + args + ')');
+ returnVal = returnValDefined ? returnVal : arguments[0];
+ if (throwReturnVal) throw returnVal;
+ return returnVal;
+ }
+ }
+
+
+ /**
+ * Creates a callback that logs its invocation in `log`.
+ *
+ * @param {(number|string)} name Suffix for 'error' name. e.g. error(1) => error1
+ * @param {*=} returnVal Value that the callback should return. If unspecified, the passed in
+ * value is rethrown.
+ * @param {boolean=} throwReturnVal If true, the `returnVal` will be thrown rather than returned.
+ */
+ function error(name, returnVal, throwReturnVal) {
+ var returnValDefined = (arguments.length >= 2);
+
+ return function(){
+ name = 'error' + (name || '');
+ log.push(name + '(' + [].join.call(arguments, ',') + ')');
+ returnVal = returnValDefined ? returnVal : q.reject(arguments[0]);
+ if (throwReturnVal) throw returnVal;
+ return returnVal;
+ }
+ }
+
+
+ /** helper for synchronous resolution of deferred */
+ function syncResolve(deferred, result) {
+ deferred.resolve(result);
+ mockNextTick.flush();
+ }
+
+
+ /** helper for synchronous rejection of deferred */
+ function syncReject(deferred, reason) {
+ deferred.reject(reason);
+ mockNextTick.flush();
+ }
+
+
+ /** converts the `log` to a '; '-separated string */
+ function logStr() {
+ return log.join('; ');
+ }
+
+
+ var mockNextTick = {
+ nextTick: function(task) {
+ mockNextTick.queue.push(task);
+ },
+ queue: [],
+ flush: function() {
+ if (!mockNextTick.queue.length) throw new Error('Nothing to be flushed!');
+ while (mockNextTick.queue.length) {
+ var queue = mockNextTick.queue;
+ mockNextTick.queue = [];
+ forEach(queue, function(task) {
+ try {
+ task();
+ } catch(e) {
+ dump('exception in mockNextTick:', e, e.name, e.message, task);
+ }
+ });
+ }
+ }
+ }
+
+
+ beforeEach(function() {
+ q = qFactory(mockNextTick.nextTick, noop),
+ defer = q.defer;
+ deferred = defer()
+ promise = deferred.promise;
+ log = [];
+ mockNextTick.queue = [];
+ });
+
+
+ afterEach(function() {
+ expect(mockNextTick.queue.length).toBe(0);
+ });
+
+
+ describe('defer', function() {
+ it('should create a new deferred', function() {
+ expect(deferred.promise).toBeDefined();
+ expect(deferred.resolve).toBeDefined();
+ expect(deferred.reject).toBeDefined();
+ });
+
+
+ describe('resolve', function() {
+ it('should fulfill the promise and execute all success callbacks in the registration order',
+ function() {
+ promise.then(success(1), error());
+ promise.then(success(2), error());
+ expect(logStr()).toBe('');
+
+ deferred.resolve('foo');
+ mockNextTick.flush();
+ expect(logStr()).toBe('success1(foo); success2(foo)');
+ });
+
+
+ it('should do nothing if a promise was previously resolved', function() {
+ promise.then(success(), error());
+ expect(logStr()).toBe('');
+
+ deferred.resolve('foo');
+ mockNextTick.flush();
+ expect(logStr()).toBe('success(foo)');
+
+ log = [];
+ deferred.resolve('bar');
+ deferred.reject('baz');
+ expect(mockNextTick.queue.length).toBe(0);
+ expect(logStr()).toBe('');
+ });
+
+
+ it('should do nothing if a promise was previously rejected', function() {
+ promise.then(success(), error());
+ expect(logStr()).toBe('');
+
+ deferred.reject('foo');
+ mockNextTick.flush();
+ expect(logStr()).toBe('error(foo)');
+
+ log = [];
+ deferred.resolve('bar');
+ deferred.reject('baz');
+ expect(mockNextTick.queue.length).toBe(0);
+ expect(logStr()).toBe('');
+ });
+
+
+ it('should allow deferred resolution with a new promise', function() {
+ var deferred2 = defer();
+ promise.then(success(), error());
+
+ deferred.resolve(deferred2.promise);
+ mockNextTick.flush();
+ expect(logStr()).toBe('');
+
+ deferred2.resolve('foo');
+ mockNextTick.flush();
+ expect(logStr()).toBe('success(foo)');
+ });
+
+
+ it('should call the callback in the next turn', function() {
+ promise.then(success());
+ expect(logStr()).toBe('');
+
+ deferred.resolve('foo');
+ expect(logStr()).toBe('');
+
+ mockNextTick.flush();
+ expect(logStr()).toBe('success(foo)');
+ });
+
+
+ it('should support non-bound execution', function() {
+ var resolver = deferred.resolve;
+ promise.then(success(), error());
+ resolver('detached');
+ mockNextTick.flush();
+ expect(logStr()).toBe('success(detached)');
+ });
+
+
+ it('should not break if a callbacks registers another callback', function() {
+ promise.then(function() {
+ log.push('outer');
+ promise.then(function() {
+ log.push('inner');
+ });
+ });
+
+ deferred.resolve('foo');
+ expect(logStr()).toBe('');
+
+ mockNextTick.flush();
+ expect(logStr()).toBe('outer; inner');
+ });
+
+
+ it('should not break if a callbacks tries to resolve the deferred again', function() {
+ promise.then(function(val) {
+ log.push('success1(' + val + ')');
+ deferred.resolve('bar');
+ });
+
+ promise.then(success(2));
+
+ deferred.resolve('foo');
+ expect(logStr()).toBe('');
+
+ mockNextTick.flush();
+ expect(logStr()).toBe('success1(foo); success2(foo)');
+ });
+ });
+
+
+ describe('reject', function() {
+ it('should reject the promise and execute all error callbacks in the registration order',
+ function() {
+ promise.then(success(), error(1));
+ promise.then(success(), error(2));
+ expect(logStr()).toBe('');
+
+ deferred.reject('foo');
+ mockNextTick.flush();
+ expect(logStr()).toBe('error1(foo); error2(foo)');
+ });
+
+
+ it('should do nothing if a promise was previously resolved', function() {
+ promise.then(success(1), error(1));
+ expect(logStr()).toBe('');
+
+ deferred.resolve('foo');
+ mockNextTick.flush();
+ expect(logStr()).toBe('success1(foo)');
+
+ log = [];
+ deferred.reject('bar');
+ deferred.resolve('baz');
+ expect(mockNextTick.queue.length).toBe(0);
+ expect(logStr()).toBe('');
+
+ promise.then(success(2), error(2))
+ expect(logStr()).toBe('');
+ mockNextTick.flush();
+ expect(logStr()).toBe('success2(foo)');
+ });
+
+
+ it('should do nothing if a promise was previously rejected', function() {
+ promise.then(success(1), error(1));
+ expect(logStr()).toBe('');
+
+ deferred.reject('foo');
+ mockNextTick.flush();
+ expect(logStr()).toBe('error1(foo)');
+
+ log = [];
+ deferred.reject('bar');
+ deferred.resolve('baz');
+ expect(mockNextTick.queue.length).toBe(0);
+ expect(logStr()).toBe('');
+
+ promise.then(success(2), error(2))
+ expect(logStr()).toBe('');
+ mockNextTick.flush();
+ expect(logStr()).toBe('error2(foo)');
+ });
+
+
+ it('should not defer rejection with a new promise', function() {
+ var deferred2 = defer();
+ promise.then(success(), error());
+
+ deferred.reject(deferred2.promise);
+ mockNextTick.flush();
+ expect(logStr()).toBe('error([object Object])');
+ });
+
+
+ it('should call the error callback in the next turn', function() {
+ promise.then(success(), error());
+ expect(logStr()).toBe('');
+
+ deferred.reject('foo');
+ expect(logStr()).toBe('');
+
+ mockNextTick.flush();
+ expect(logStr()).toBe('error(foo)');
+ });
+
+
+ it('should support non-bound execution', function() {
+ var rejector = deferred.reject;
+ promise.then(success(), error());
+ rejector('detached');
+ mockNextTick.flush();
+ expect(logStr()).toBe('error(detached)');
+ });
+ });
+
+
+ describe('promise', function() {
+ it('should have a then method', function() {
+ expect(typeof promise.then).toBe('function');
+ });
+
+
+ describe('then', function() {
+ it('should allow registration of a success callback without an errback and resolve',
+ function() {
+ promise.then(success());
+ syncResolve(deferred, 'foo');
+ expect(logStr()).toBe('success(foo)');
+ });
+
+ it('should allow registration of a success callback without an errback and reject',
+ function() {
+ promise.then(success());
+ syncReject(deferred, 'foo');
+ expect(logStr()).toBe('');
+ });
+
+
+ it('should allow registration of an errback without a success callback and reject',
+ function() {
+ promise.then(null, error());
+ syncReject(deferred, 'oops!');
+ expect(logStr()).toBe('error(oops!)');
+ });
+
+
+ it('should allow registration of an errback without a success callback and resolve',
+ function() {
+ promise.then(null, error());
+ syncResolve(deferred, 'done');
+ expect(logStr()).toBe('');
+ });
+
+
+ it('should resolve all callbacks with the original value', function() {
+ promise.then(success('A', 'aVal'), error());
+ promise.then(success('B', 'bErr', true), error());
+ promise.then(success('C', q.reject('cReason')), error());
+ promise.then(success('D', 'dVal'), error());
+
+ expect(logStr()).toBe('');
+ syncResolve(deferred, 'yup');
+ expect(logStr()).toBe('successA(yup); successB(yup); successC(yup); successD(yup)');
+ });
+
+
+ it('should reject all callbacks with the original reason', function() {
+ promise.then(success(), error('A', 'aVal'));
+ promise.then(success(), error('B', 'bEr', true));
+ promise.then(success(), error('C', q.reject('cReason')));
+ promise.then(success(), error('D', 'dVal'));
+
+ expect(logStr()).toBe('');
+ syncReject(deferred, 'noo!');
+ expect(logStr()).toBe('errorA(noo!); errorB(noo!); errorC(noo!); errorD(noo!)');
+ });
+
+
+ it('should propagate resolution and rejection between dependent promises', function() {
+ promise.then(success(1, 'x'), error('1')).
+ then(success(2, 'y', true), error('2')).
+ then(success(3), error(3, 'z', true)).
+ then(success(4), error(4, 'done')).
+ then(success(5), error(5));
+
+ expect(logStr()).toBe('');
+ syncResolve(deferred, 'sweet!');
+ expect(log).toEqual(['success1(sweet!)',
+ 'success2(x)',
+ 'error3(y)',
+ 'error4(z)',
+ 'success5(done)']);
+ });
+
+
+ it('should reject a derived promise if an exception is thrown while resolving its parent',
+ function() {
+ promise.then(success(1, 'oops', true)).
+ then(success(2), error(2));
+ syncResolve(deferred, 'done!');
+ expect(logStr()).toBe('success1(done!); error2(oops)');
+ });
+
+
+ it('should reject a derived promise if an exception is thrown while rejecting its parent',
+ function() {
+ promise.then(null, error(1, 'oops', true)).
+ then(success(2), error(2));
+ syncReject(deferred, 'timeout');
+ expect(logStr()).toBe('error1(timeout); error2(oops)');
+ });
+
+
+ it('should call success callback in the next turn even if promise is already resolved',
+ function() {
+ deferred.resolve('done!');
+
+ promise.then(success());
+ expect(logStr()).toBe('');
+
+ mockNextTick.flush();
+ expect(log).toEqual(['success(done!)']);
+ });
+
+
+ it('should call errpr callback in the next turn even if promise is already rejected',
+ function() {
+ deferred.reject('oops!');
+
+ promise.then(null, error());
+ expect(logStr()).toBe('');
+
+ mockNextTick.flush();
+ expect(log).toEqual(['error(oops!)']);
+ });
+ });
+ });
+ });
+
+
+ describe('reject', function() {
+ it('should package a string into a rejected promise', function() {
+ var rejectedPromise = q.reject('not gonna happen');
+ promise.then(success(), error());
+ syncResolve(deferred, rejectedPromise);
+ expect(log).toEqual(['error(not gonna happen)']);
+ });
+
+
+ it('should package an exception into a rejected promise', function() {
+ var rejectedPromise = q.reject(Error('not gonna happen'));
+ promise.then(success(), error());
+ syncResolve(deferred, rejectedPromise);
+ expect(log).toEqual(['error(Error: not gonna happen)']);
+ });
+ });
+
+
+ describe('when', function() {
+ describe('resolution', function() {
+ it('should call the success callback in the next turn when the value is a non-promise',
+ function() {
+ q.when('hello', success(), error());
+ expect(logStr()).toBe('');
+ mockNextTick.flush();
+ expect(logStr()).toBe('success(hello)');
+ });
+
+
+ it('should call the success callback in the next turn when the value is a resolved promise',
+ function() {
+ deferred.resolve('hello');
+ q.when(deferred.promise, success(), error());
+ expect(logStr()).toBe('');
+ mockNextTick.flush();
+ expect(logStr()).toBe('success(hello)');
+ });
+
+
+ it('should call the errback in the next turn when the value is a rejected promise', function() {
+ deferred.reject('nope');
+ q.when(deferred.promise, success(), error());
+ expect(logStr()).toBe('');
+ mockNextTick.flush();
+ expect(logStr()).toBe('error(nope)');
+ });
+
+
+ it('should call the success callback after the original promise is resolved',
+ function() {
+ q.when(deferred.promise, success(), error());
+ expect(logStr()).toBe('');
+ mockNextTick.flush();
+ expect(logStr()).toBe('');
+ syncResolve(deferred, 'hello');
+ expect(logStr()).toBe('success(hello)');
+ });
+
+
+ it('should call the errback after the orignal promise is rejected',
+ function() {
+ q.when(deferred.promise, success(), error());
+ expect(logStr()).toBe('');
+ mockNextTick.flush();
+ expect(logStr()).toBe('');
+ syncReject(deferred, 'nope');
+ expect(logStr()).toBe('error(nope)');
+ });
+ });
+
+
+ describe('optional callbacks', function() {
+ it('should not require success callback and propagate resolution', function() {
+ q.when('hi', null, error()).then(success(2), error());
+ expect(logStr()).toBe('');
+ mockNextTick.flush();
+ expect(logStr()).toBe('success2(hi)');
+ });
+
+
+ it('should not require success callback and propagate rejection', function() {
+ q.when(q.reject('sorry'), null, error(1)).then(success(), error(2));
+ expect(logStr()).toBe('');
+ mockNextTick.flush();
+ expect(logStr()).toBe('error1(sorry); error2(sorry)');
+ });
+
+
+ it('should not require errback and propagate resolution', function() {
+ q.when('hi', success(1, 'hello')).then(success(2), error());
+ expect(logStr()).toBe('');
+ mockNextTick.flush();
+ expect(logStr()).toBe('success1(hi); success2(hello)');
+ });
+
+
+ it('should not require errback and propagate rejection', function() {
+ q.when(q.reject('sorry'), success()).then(success(2), error(2));
+ expect(logStr()).toBe('');
+ mockNextTick.flush();
+ expect(logStr()).toBe('error2(sorry)');
+ });
+ });
+
+
+ describe('returned promise', function() {
+ it('should return a promise that can be resolved with a value returned from the success ' +
+ 'callback', function() {
+ q.when('hello', success(1, 'hi'), error()).then(success(2), error());
+ mockNextTick.flush();
+ expect(logStr()).toBe('success1(hello); success2(hi)');
+ });
+
+
+ it('should return a promise that can be rejected with a rejected promise returned from the ' +
+ 'success callback', function() {
+ q.when('hello', success(1, q.reject('sorry')), error()).then(success(), error(2));
+ mockNextTick.flush();
+ expect(logStr()).toBe('success1(hello); error2(sorry)');
+ });
+
+
+ it('should return a promise that can be resolved with a value returned from the errback',
+ function() {
+ q.when(q.reject('sorry'), success(), error(1, 'hi')).then(success(2), error());
+ mockNextTick.flush();
+ expect(logStr()).toBe('error1(sorry); success2(hi)');
+ });
+
+
+ it('should return a promise that can be rejected with a rejected promise returned from the ' +
+ 'errback', function() {
+ q.when(q.reject('sorry'), success(), error(1, q.reject('sigh'))).then(success(), error(2));
+ mockNextTick.flush();
+ expect(logStr()).toBe('error1(sorry); error2(sigh)');
+ });
+
+
+ it('should return a promise that can be resolved with a promise returned from the success ' +
+ 'callback', function() {
+ var deferred2 = defer();
+ q.when('hi', success(1, deferred2.promise), error()).then(success(2), error());
+ mockNextTick.flush();
+ expect(logStr()).toBe('success1(hi)');
+ syncResolve(deferred2, 'finally!');
+ expect(logStr()).toBe('success1(hi); success2(finally!)');
+ });
+
+
+ it('should return a promise that can be resolved with promise returned from the errback ' +
+ 'callback', function() {
+ var deferred2 = defer();
+ q.when(q.reject('sorry'), success(), error(1, deferred2.promise)).then(success(2), error());
+ mockNextTick.flush();
+ expect(logStr()).toBe('error1(sorry)');
+ syncResolve(deferred2, 'finally!');
+ expect(logStr()).toBe('error1(sorry); success2(finally!)');
+ });
+ });
+
+
+ describe('security', function() {
+ it('should call success callback only once even if the original promise gets fullfilled ' +
+ 'multiple times', function() {
+ var evilPromise = {
+ then: function(success, error) {
+ evilPromise.success = success;
+ evilPromise.error = error;
+ }
+ }
+
+ q.when(evilPromise, success(), error());
+ mockNextTick.flush();
+ expect(logStr()).toBe('');
+ evilPromise.success('done');
+ mockNextTick.flush(); // TODO(i) wrong queue, evil promise would be resolved outside of the
+ // scope.$apply lifecycle and in that case we should have some kind
+ // of fallback queue for calling our callbacks from. Otherwise the
+ // application will get stuck until something triggers next $apply.
+ expect(logStr()).toBe('success(done)');
+
+ evilPromise.success('evil is me');
+ evilPromise.error('burn burn');
+ expect(logStr()).toBe('success(done)');
+ });
+
+
+ it('should call errback only once even if the original promise gets fullfilled multiple ' +
+ 'times', function() {
+ var evilPromise = {
+ then: function(success, error) {
+ evilPromise.success = success;
+ evilPromise.error = error;
+ }
+ }
+
+ q.when(evilPromise, success(), error());
+ mockNextTick.flush();
+ expect(logStr()).toBe('');
+ evilPromise.error('failed');
+ expect(logStr()).toBe('error(failed)');
+
+ evilPromise.error('muhaha');
+ evilPromise.success('take this');
+ expect(logStr()).toBe('error(failed)');
+ });
+ });
+ });
+
+
+ describe('all', function() {
+ it('should resolve all of nothing', function() {
+ var result;
+ q.all([]).then(function(r) { result = r; });
+ mockNextTick.flush();
+ expect(result).toEqual([]);
+ });
+
+
+ it('should take an array of promises and return a promise for an array of results', function() {
+ var deferred1 = defer(),
+ deferred2 = defer();
+
+ q.all([promise, deferred1.promise, deferred2.promise]).then(success(), error());
+ expect(logStr()).toBe('');
+ syncResolve(deferred, 'hi');
+ expect(logStr()).toBe('');
+ syncResolve(deferred2, 'cau');
+ expect(logStr()).toBe('');
+ syncResolve(deferred1, 'hola');
+ expect(logStr()).toBe('success([hi,hola,cau])');
+ });
+
+
+ it('should reject the derived promise if at least one of the promises in the array is rejected',
+ function() {
+ var deferred1 = defer(),
+ deferred2 = defer();
+
+ q.all([promise, deferred1.promise, deferred2.promise]).then(success(), error());
+ expect(logStr()).toBe('');
+ syncResolve(deferred2, 'cau');
+ expect(logStr()).toBe('');
+ syncReject(deferred1, 'oops');
+ expect(logStr()).toBe('error(oops)');
+ });
+
+
+ it('should ignore multiple resolutions of an (evil) array promise', function() {
+ var evilPromise = {
+ then: function(success, error) {
+ evilPromise.success = success;
+ evilPromise.error = error;
+ }
+ }
+
+ q.all([promise, evilPromise]).then(success(), error());
+ expect(logStr()).toBe('');
+
+ evilPromise.success('first');
+ evilPromise.success('muhaha');
+ evilPromise.error('arghhh');
+ expect(logStr()).toBe('');
+
+ syncResolve(deferred, 'done');
+ expect(logStr()).toBe('success([done,first])');
+ });
+ });
+
+
+ describe('exception logging', function() {
+ var mockExceptionLogger = {
+ log: [],
+ logger: function(e) {
+ mockExceptionLogger.log.push(e);
+ }
+ }
+
+
+ beforeEach(function() {
+ q = qFactory(mockNextTick.nextTick, mockExceptionLogger.logger),
+ defer = q.defer;
+ deferred = defer()
+ promise = deferred.promise;
+ log = [];
+ mockExceptionLogger.log = [];
+ });
+
+
+ describe('in then', function() {
+ it('should log exceptions thrown in a success callback and reject the derived promise',
+ function() {
+ var success1 = success(1, 'oops', true);
+ promise.then(success1).then(success(2), error(2));
+ syncResolve(deferred, 'done');
+ expect(logStr()).toBe('success1(done); error2(oops)');
+ expect(mockExceptionLogger.log).toEqual(['oops']);
+ });
+
+
+ it('should NOT log exceptions when a success callback returns rejected promise', function() {
+ promise.then(success(1, q.reject('rejected'))).then(success(2), error(2));
+ syncResolve(deferred, 'done');
+ expect(logStr()).toBe('success1(done); error2(rejected)');
+ expect(mockExceptionLogger.log).toEqual([]);
+ });
+
+
+ it('should log exceptions thrown in a errback and reject the derived promise', function() {
+ var error1 = error(1, 'oops', true);
+ promise.then(null, error1).then(success(2), error(2));
+ syncReject(deferred, 'nope');
+ expect(logStr()).toBe('error1(nope); error2(oops)');
+ expect(mockExceptionLogger.log).toEqual(['oops']);
+ });
+
+
+ it('should NOT log exceptions when an errback returns a rejected promise', function() {
+ promise.then(null, error(1, q.reject('rejected'))).then(success(2), error(2));
+ syncReject(deferred, 'nope');
+ expect(logStr()).toBe('error1(nope); error2(rejected)');
+ expect(mockExceptionLogger.log).toEqual([]);
+ });
+ });
+
+
+ describe('in when', function() {
+ it('should log exceptions thrown in a success callback and reject the derived promise',
+ function() {
+ var success1 = success(1, 'oops', true);
+ q.when('hi', success1, error()).then(success(), error(2));
+ mockNextTick.flush();
+ expect(logStr()).toBe('success1(hi); error2(oops)');
+ expect(mockExceptionLogger.log).toEqual(['oops']);
+ });
+
+
+ it('should NOT log exceptions when a success callback returns rejected promise', function() {
+ q.when('hi', success(1, q.reject('rejected'))).then(success(2), error(2));
+ mockNextTick.flush();
+ expect(logStr()).toBe('success1(hi); error2(rejected)');
+ expect(mockExceptionLogger.log).toEqual([]);
+ });
+
+
+ it('should log exceptions thrown in a errback and reject the derived promise', function() {
+ var error1 = error(1, 'oops', true);
+ q.when(q.reject('sorry'), success(), error1).then(success(), error(2));
+ mockNextTick.flush();
+ expect(logStr()).toBe('error1(sorry); error2(oops)');
+ expect(mockExceptionLogger.log).toEqual(['oops']);
+ });
+
+
+ it('should NOT log exceptions when an errback returns a rejected promise', function() {
+ q.when(q.reject('sorry'), success(), error(1, q.reject('rejected'))).
+ then(success(2), error(2));
+ mockNextTick.flush();
+ expect(logStr()).toBe('error1(sorry); error2(rejected)');
+ expect(mockExceptionLogger.log).toEqual([]);
+ });
+ });
+ });
+});
generated by cgit v1.2.3 (git 2.25.1) at 2025-11-01 18:14:17 +0000