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'use strict';
describe('$timeout', function() {
beforeEach(module(provideLog));
it('should delegate functions to $browser.defer', inject(function($timeout, $browser) {
var counter = 0;
$timeout(function() { counter++; });
expect(counter).toBe(0);
$browser.defer.flush();
expect(counter).toBe(1);
expect(function() {$browser.defer.flush();}).toThrowError('No deferred tasks to be flushed');
expect(counter).toBe(1);
}));
it('should call $apply after each callback is executed', inject(function($timeout, $rootScope) {
var applySpy = spyOn($rootScope, '$apply').and.callThrough();
$timeout(noop);
expect(applySpy).not.toHaveBeenCalled();
$timeout.flush();
expect(applySpy).toHaveBeenCalledOnce();
applySpy.calls.reset();
$timeout(noop);
$timeout(noop);
$timeout.flush();
expect(applySpy).toHaveBeenCalledTimes(2);
}));
it('should NOT call $apply if skipApply is set to true', inject(function($timeout, $rootScope) {
var applySpy = spyOn($rootScope, '$apply').and.callThrough();
$timeout(noop, 12, false);
expect(applySpy).not.toHaveBeenCalled();
$timeout.flush();
expect(applySpy).not.toHaveBeenCalled();
}));
it('should NOT call $evalAsync or $digest if invokeApply is set to false',
inject(function($timeout, $rootScope) {
var evalAsyncSpy = spyOn($rootScope, '$evalAsync').and.callThrough();
var digestSpy = spyOn($rootScope, '$digest').and.callThrough();
var fulfilledSpy = jasmine.createSpy('fulfilled');
$timeout(fulfilledSpy, 1000, false);
$timeout.flush();
expect(fulfilledSpy).toHaveBeenCalledOnce();
expect(evalAsyncSpy).not.toHaveBeenCalled();
expect(digestSpy).not.toHaveBeenCalled();
}));
it('should allow you to specify the delay time', inject(function($timeout, $browser) {
var defer = spyOn($browser, 'defer');
$timeout(noop, 123);
expect(defer).toHaveBeenCalledTimes(1);
expect(defer.calls.mostRecent().args[1]).toEqual(123);
}));
it('should return a promise which will be resolved with return value of the timeout callback',
inject(function($timeout, log) {
var promise = $timeout(function() { log('timeout'); return 'buba'; });
promise.then(function(value) { log('promise success: ' + value); }, log.fn('promise error'));
expect(log).toEqual([]);
$timeout.flush();
expect(log).toEqual(['timeout', 'promise success: buba']);
}));
it('should forget references to deferreds when callback called even if skipApply is true',
inject(function($timeout, $browser) {
// $browser.defer.cancel is only called on cancel if the deferred object is still referenced
var cancelSpy = spyOn($browser.defer, 'cancel').and.callThrough();
var promise1 = $timeout(noop, 0, false);
var promise2 = $timeout(noop, 100, false);
expect(cancelSpy).not.toHaveBeenCalled();
$timeout.flush(0);
// Promise1 deferred object should already be removed from the list and not cancellable
$timeout.cancel(promise1);
expect(cancelSpy).not.toHaveBeenCalled();
// Promise2 deferred object should not have been called and should be cancellable
$timeout.cancel(promise2);
expect(cancelSpy).toHaveBeenCalled();
}));
it('should allow the `fn` parameter to be optional', inject(function($timeout, log) {
$timeout().then(function(value) { log('promise success: ' + value); }, log.fn('promise error'));
expect(log).toEqual([]);
$timeout.flush();
expect(log).toEqual(['promise success: undefined']);
log.reset();
$timeout(1000).then(function(value) { log('promise success: ' + value); }, log.fn('promise error'));
expect(log).toEqual([]);
$timeout.flush(500);
expect(log).toEqual([]);
$timeout.flush(500);
expect(log).toEqual(['promise success: undefined']);
}));
it('should pass the timeout arguments in the timeout callback',
inject(function($timeout, $browser, log) {
var task1 = jasmine.createSpy('Nappa'),
task2 = jasmine.createSpy('Vegeta');
$timeout(task1, 9000, true, 'What does', 'the timeout', 'say about', 'its delay level');
expect($browser.deferredFns.length).toBe(1);
$timeout(task2, 9001, false, 'It\'s', 'over', 9000);
expect($browser.deferredFns.length).toBe(2);
$timeout(9000, false, 'What!', 9000).then(function(value) { log('There\'s no way that can be right! ' + value); }, log.fn('It can\'t!'));
expect($browser.deferredFns.length).toBe(3);
expect(log).toEqual([]);
$timeout.flush(0);
expect(task1).not.toHaveBeenCalled();
$timeout.flush(9000);
expect(task1).toHaveBeenCalledWith('What does', 'the timeout', 'say about', 'its delay level');
$timeout.flush(1);
expect(task2).toHaveBeenCalledWith('It\'s', 'over', 9000);
$timeout.flush(9000);
expect(log).toEqual(['There\'s no way that can be right! undefined']);
}));
describe('exception handling', function() {
beforeEach(module(function($exceptionHandlerProvider) {
$exceptionHandlerProvider.mode('log');
}));
it('should delegate exception to the $exceptionHandler service', inject(
function($timeout, $exceptionHandler) {
$timeout(function() { throw 'Test Error'; });
expect($exceptionHandler.errors).toEqual([]);
$timeout.flush();
expect($exceptionHandler.errors).toEqual(['Test Error', 'Possibly unhandled rejection: Test Error']);
}));
it('should call $apply even if an exception is thrown in callback', inject(
function($timeout, $rootScope) {
var applySpy = spyOn($rootScope, '$apply').and.callThrough();
$timeout(function() { throw 'Test Error'; });
expect(applySpy).not.toHaveBeenCalled();
$timeout.flush();
expect(applySpy).toHaveBeenCalled();
}));
it('should reject the timeout promise when an exception is thrown in the timeout callback',
inject(function($timeout, log) {
var promise = $timeout(function() { throw 'Some Error'; });
promise.then(log.fn('success'), function(reason) { log('error: ' + reason); });
$timeout.flush();
expect(log).toEqual('error: Some Error');
}));
it('should pass the timeout arguments in the timeout callback even if an exception is thrown',
inject(function($timeout, log) {
var promise1 = $timeout(function(arg) { throw arg; }, 9000, true, 'Some Arguments');
var promise2 = $timeout(function(arg1, args2) { throw arg1 + ' ' + args2; }, 9001, false, 'Are Meant', 'To Be Thrown');
promise1.then(log.fn('success'), function(reason) { log('error: ' + reason); });
promise2.then(log.fn('success'), function(reason) { log('error: ' + reason); });
$timeout.flush(0);
expect(log).toEqual('');
$timeout.flush(9000);
expect(log).toEqual('error: Some Arguments');
$timeout.flush(1);
expect(log).toEqual('error: Some Arguments; error: Are Meant To Be Thrown');
}));
it('should forget references to relevant deferred even when exception is thrown',
inject(function($timeout, $browser) {
// $browser.defer.cancel is only called on cancel if the deferred object is still referenced
var cancelSpy = spyOn($browser.defer, 'cancel').and.callThrough();
var promise = $timeout(function() { throw 'Test Error'; }, 0, false);
$timeout.flush();
expect(cancelSpy).not.toHaveBeenCalled();
$timeout.cancel(promise);
expect(cancelSpy).not.toHaveBeenCalled();
}));
});
describe('cancel', function() {
it('should cancel tasks', inject(function($timeout) {
var task1 = jasmine.createSpy('task1'),
task2 = jasmine.createSpy('task2'),
task3 = jasmine.createSpy('task3'),
task4 = jasmine.createSpy('task4'),
promise1, promise3, promise4;
promise1 = $timeout(task1);
$timeout(task2);
promise3 = $timeout(task3, 333);
promise4 = $timeout(333);
promise3.then(task4, noop);
$timeout.cancel(promise1);
$timeout.cancel(promise3);
$timeout.cancel(promise4);
$timeout.flush();
expect(task1).not.toHaveBeenCalled();
expect(task2).toHaveBeenCalledOnce();
expect(task3).not.toHaveBeenCalled();
expect(task4).not.toHaveBeenCalled();
}));
it('should cancel the promise', inject(function($timeout, log) {
var promise = $timeout(noop);
promise.then(function(value) { log('promise success: ' + value); },
function(err) { log('promise error: ' + err); },
function(note) { log('promise update: ' + note); });
expect(log).toEqual([]);
$timeout.cancel(promise);
$timeout.flush();
expect(log).toEqual(['promise error: canceled']);
}));
it('should return true if a task was successfully canceled', inject(function($timeout) {
var task1 = jasmine.createSpy('task1'),
task2 = jasmine.createSpy('task2'),
promise1, promise2;
promise1 = $timeout(task1);
$timeout.flush();
promise2 = $timeout(task2);
expect($timeout.cancel(promise1)).toBe(false);
expect($timeout.cancel(promise2)).toBe(true);
}));
it('should not throw an error when given an undefined promise', inject(function($timeout) {
expect($timeout.cancel()).toBe(false);
}));
it('should throw an error when given a non-$timeout promise', inject(function($timeout) {
var promise = $timeout(noop).then(noop);
expect(function() { $timeout.cancel(promise); }).toThrowMinErr('$timeout', 'badprom');
}));
it('should forget references to relevant deferred', inject(function($timeout, $browser) {
// $browser.defer.cancel is only called on cancel if the deferred object is still referenced
var cancelSpy = spyOn($browser.defer, 'cancel').and.callThrough();
var promise = $timeout(noop, 0, false);
expect(cancelSpy).not.toHaveBeenCalled();
$timeout.cancel(promise);
expect(cancelSpy).toHaveBeenCalledOnce();
// Promise deferred object should already be removed from the list and not cancellable again
$timeout.cancel(promise);
expect(cancelSpy).toHaveBeenCalledOnce();
}));
it('should not trigger digest when cancelled', inject(function($timeout, $rootScope, $browser) {
var watchSpy = jasmine.createSpy('watchSpy');
$rootScope.$watch(watchSpy);
var t = $timeout();
$timeout.cancel(t);
expect(function() {$browser.defer.flush();}).toThrowError('No deferred tasks to be flushed');
expect(watchSpy).not.toHaveBeenCalled();
}));
});
});