module( "deferred", { teardown: moduleTeardown }); jQuery.each( [ "", " - new operator" ], function( _, withNew ) { function createDeferred( fn ) { return withNew ? new jQuery.Deferred( fn ) : jQuery.Deferred( fn ); } test( "jQuery.Deferred" + withNew, function() { expect( 23 ); var defer = createDeferred(); strictEqual( defer.pipe, defer.then, "pipe is an alias of then" ); createDeferred().resolve().done(function() { ok( true, "Success on resolve" ); strictEqual( this.state(), "resolved", "Deferred is resolved (state)" ); }).fail(function() { ok( false, "Error on resolve" ); }).always(function() { ok( true, "Always callback on resolve" ); }); createDeferred().reject().done(function() { ok( false, "Success on reject" ); }).fail(function() { ok( true, "Error on reject" ); strictEqual( this.state(), "rejected", "Deferred is rejected (state)" ); }).always(function() { ok( true, "Always callback on reject" ); }); createDeferred(function( defer ) { ok( this === defer, "Defer passed as this & first argument" ); this.resolve("done"); }).done(function( value ) { strictEqual( value, "done", "Passed function executed" ); }); createDeferred(function( defer ) { var promise = defer.promise(), func = function() {}, funcPromise = defer.promise( func ); strictEqual( defer.promise(), promise, "promise is always the same" ); strictEqual( funcPromise, func, "non objects get extended" ); jQuery.each( promise, function( key ) { if ( !jQuery.isFunction( promise[ key ] ) ) { ok( false, key + " is a function (" + jQuery.type( promise[ key ] ) + ")" ); } if ( promise[ key ] !== func[ key ] ) { strictEqual( func[ key ], promise[ key ], key + " is the same" ); } }); }); jQuery.expandedEach = jQuery.each; jQuery.expandedEach( "resolve reject".split(" "), function( _, change ) { createDeferred(function( defer ) { strictEqual( defer.state(), "pending", "pending after creation" ); var checked = 0; defer.progress(function( value ) { strictEqual( value, checked, "Progress: right value (" + value + ") received" ); }); for ( checked = 0; checked < 3; checked++ ) { defer.notify( checked ); } strictEqual( defer.state(), "pending", "pending after notification" ); defer[ change ](); notStrictEqual( defer.state(), "pending", "not pending after " + change ); defer.notify(); }); }); }); }); test( "jQuery.Deferred - chainability", function() { var defer = jQuery.Deferred(); expect( 10 ); jQuery.expandedEach = jQuery.each; jQuery.expandedEach( "resolve reject notify resolveWith rejectWith notifyWith done fail progress always".split(" "), function( _, method ) { var object = { m: defer[ method ] }; strictEqual( object.m(), object, method + " is chainable" ); }); }); test( "jQuery.Deferred.then - filtering (done)", function() { expect( 4 ); var value1, value2, value3, defer = jQuery.Deferred(), piped = defer.then(function( a, b ) { return a * b; }); piped.done(function( result ) { value3 = result; }); defer.done(function( a, b ) { value1 = a; value2 = b; }); defer.resolve( 2, 3 ); strictEqual( value1, 2, "first resolve value ok" ); strictEqual( value2, 3, "second resolve value ok" ); strictEqual( value3, 6, "result of filter ok" ); jQuery.Deferred().reject().then(function() { ok( false, "then should not be called on reject" ); }); jQuery.Deferred().resolve().then( jQuery.noop ).done(function( value ) { strictEqual( value, undefined, "then done callback can return undefined/null" ); }); }); test( "jQuery.Deferred.then - filtering (fail)", function() { expect( 4 ); var value1, value2, value3, defer = jQuery.Deferred(), piped = defer.then( null, function( a, b ) { return a * b; }); piped.fail(function( result ) { value3 = result; }); defer.fail(function( a, b ) { value1 = a; value2 = b; }); defer.reject( 2, 3 ); strictEqual( value1, 2, "first reject value ok" ); strictEqual( value2, 3, "second reject value ok" ); strictEqual( value3, 6, "result of filter ok" ); jQuery.Deferred().resolve().then( null, function() { ok( false, "then should not be called on resolve" ); }); jQuery.Deferred().reject().then( null, jQuery.noop ).fail(function( value ) { strictEqual( value, undefined, "then fail callback can return undefined/null" ); }); }); test( "jQuery.Deferred.then - filtering (progress)", function() { expect( 3 ); var value1, value2, value3, defer = jQuery.Deferred(), piped = defer.then( null, null, function( a, b ) { return a * b; }); piped.progress(function( result ) { value3 = result; }); defer.progress(function( a, b ) { value1 = a; value2 = b; }); defer.notify( 2, 3 ); strictEqual( value1, 2, "first progress value ok" ); strictEqual( value2, 3, "second progress value ok" ); strictEqual( value3, 6, "result of filter ok" ); }); test( "jQuery.Deferred.then - deferred (done)", function() { expect( 3 ); var value1, value2, value3, defer = jQuery.Deferred(), piped = defer.then(function( a, b ) { return jQuery.Deferred(function( defer ) { defer.reject( a * b ); }); }); piped.fail(function( result ) { value3 = result; }); defer.done(function( a, b ) { value1 = a; value2 = b; }); defer.resolve( 2, 3 ); strictEqual( value1, 2, "first resolve value ok" ); strictEqual( value2, 3, "second resolve value ok" ); strictEqual( value3, 6, "result of filter ok" ); }); test( "jQuery.Deferred.then - deferred (fail)", function() { expect( 3 ); var value1, value2, value3, defer = jQuery.Deferred(), piped = defer.then( null, function( a, b ) { return jQuery.Deferred(function( defer ) { defer.resolve( a * b ); }); }); piped.done(function( result ) { value3 = result; }); defer.fail(function( a, b ) { value1 = a; value2 = b; }); defer.reject( 2, 3 ); strictEqual( value1, 2, "first reject value ok" ); strictEqual( value2, 3, "second reject value ok" ); strictEqual( value3, 6, "result of filter ok" ); }); test( "jQuery.Deferred.then - deferred (progress)", function() { expect( 3 ); var value1, value2, value3, defer = jQuery.Deferred(), piped = defer.then( null, null, function( a, b ) { return jQuery.Deferred(function( defer ) { defer.resolve( a * b ); }); }); piped.done(function( result ) { value3 = result; }); defer.progress(function( a, b ) { value1 = a; value2 = b; }); defer.notify( 2, 3 ); strictEqual( value1, 2, "first progress value ok" ); strictEqual( value2, 3, "second progress value ok" ); strictEqual( value3, 6, "result of filter ok" ); }); test( "jQuery.Deferred.then - context", function() { expect( 7 ); var defer, piped, defer2, piped2, context = {}; jQuery.Deferred().resolveWith( context, [ 2 ] ).then(function( value ) { return value * 3; }).done(function( value ) { strictEqual( this, context, "custom context correctly propagated" ); strictEqual( value, 6, "proper value received" ); }); jQuery.Deferred().resolve().then(function() { return jQuery.Deferred().resolveWith(context); }).done(function() { strictEqual( this, context, "custom context of returned deferred correctly propagated" ); }); defer = jQuery.Deferred(); piped = defer.then(function( value ) { return value * 3; }); defer.resolve( 2 ); piped.done(function( value ) { strictEqual( this, piped, "default context gets updated to latest promise in the chain" ); strictEqual( value, 6, "proper value received" ); }); defer2 = jQuery.Deferred(); piped2 = defer2.then(); defer2.resolve( 2 ); piped2.done(function( value ) { strictEqual( this, piped2, "default context gets updated to latest promise in the chain (without passing function)" ); strictEqual( value, 2, "proper value received (without passing function)" ); }); }); test( "jQuery.when", function() { expect( 37 ); // Some other objects jQuery.each({ "an empty string": "", "a non-empty string": "some string", "zero": 0, "a number other than zero": 1, "true": true, "false": false, "null": null, "undefined": undefined, "a plain object": {}, "an array": [ 1, 2, 3 ] }, function( message, value ) { ok( jQuery.isFunction( jQuery.when( value ).done(function( resolveValue ) { strictEqual( this, window, "Context is the global object with " + message ); strictEqual( resolveValue, value, "Test the promise was resolved with " + message ); }).promise ), "Test " + message + " triggers the creation of a new Promise" ); }); ok( jQuery.isFunction( jQuery.when().done(function( resolveValue ) { strictEqual( this, window, "Test the promise was resolved with window as its context" ); strictEqual( resolveValue, undefined, "Test the promise was resolved with no parameter" ); }).promise ), "Test calling when with no parameter triggers the creation of a new Promise" ); var cache, context = {}; jQuery.when( jQuery.Deferred().resolveWith( context ) ).done(function() { strictEqual( this, context, "when( promise ) propagates context" ); }); jQuery.each([ 1, 2, 3 ], function( k, i ) { jQuery.when( cache || jQuery.Deferred(function() { this.resolve( i ); }) ).done(function( value ) { strictEqual( value, 1, "Function executed" + ( i > 1 ? " only once" : "" ) ); cache = value; }); }); }); test( "jQuery.when - joined", function() { expect( 119 ); var deferreds = { value: 1, success: jQuery.Deferred().resolve( 1 ), error: jQuery.Deferred().reject( 0 ), futureSuccess: jQuery.Deferred().notify( true ), futureError: jQuery.Deferred().notify( true ), notify: jQuery.Deferred().notify( true ) }, willSucceed = { value: true, success: true, futureSuccess: true }, willError = { error: true, futureError: true }, willNotify = { futureSuccess: true, futureError: true, notify: true }; jQuery.each( deferreds, function( id1, defer1 ) { jQuery.each( deferreds, function( id2, defer2 ) { var shouldResolve = willSucceed[ id1 ] && willSucceed[ id2 ], shouldError = willError[ id1 ] || willError[ id2 ], shouldNotify = willNotify[ id1 ] || willNotify[ id2 ], expected = shouldResolve ? [ 1, 1 ] : [ 0, undefined ], expectedNotify = shouldNotify && [ willNotify[ id1 ], willNotify[ id2 ] ], code = id1 + "/" + id2, context1 = defer1 && jQuery.isFunction( defer1.promise ) ? defer1.promise() : undefined, context2 = defer2 && jQuery.isFunction( defer2.promise ) ? defer2.promise() : undefined; jQuery.when( defer1, defer2 ).done(function( a, b ) { if ( shouldResolve ) { deepEqual( [ a, b ], expected, code + " => resolve" ); strictEqual( this[ 0 ], context1, code + " => first context OK" ); strictEqual( this[ 1 ], context2, code + " => second context OK" ); } else { ok( false, code + " => resolve" ); } }).fail(function( a, b ) { if ( shouldError ) { deepEqual( [ a, b ], expected, code + " => reject" ); } else { ok( false, code + " => reject" ); } }).progress(function( a, b ) { deepEqual( [ a, b ], expectedNotify, code + " => progress" ); strictEqual( this[ 0 ], expectedNotify[ 0 ] ? context1 : undefined, code + " => first context OK" ); strictEqual( this[ 1 ], expectedNotify[ 1 ] ? context2 : undefined, code + " => second context OK" ); }); }); }); deferreds.futureSuccess.resolve( 1 ); deferreds.futureError.reject( 0 ); });