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( 21 ); 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" ); }); 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 defer = jQuery.Deferred(), piped = defer.then(function( a, b ) { return a * b; }), value1, value2, value3; 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 defer = jQuery.Deferred(), piped = defer.then( null, function( a, b ) { return a * b; } ), value1, value2, value3; 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 defer = jQuery.Deferred(), piped = defer.then( null, null, function( a, b ) { return a * b; } ), value1, value2, value3; 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 defer = jQuery.Deferred(), piped = defer.then(function( a, b ) { return jQuery.Deferred(function( defer ) { defer.reject( a * b ); }); }), value1, value2, value3; 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 defer = jQuery.Deferred(), piped = defer.then( null, function( a, b ) { return jQuery.Deferred(function( defer ) { defer.resolve( a * b ); }); } ), value1, value2, value3; 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 defer = jQuery.Deferred(), piped = defer.then( null, null, function( a, b ) { return jQuery.Deferred(function( defer ) { defer.resolve( a * b ); }); } ), value1, value2, value3; 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(4); var 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" ); }); var defer = jQuery.Deferred(), piped = defer.then(function( value ) { return value * 3; }); defer.resolve( 2 ); piped.done(function( value ) { strictEqual( this.promise(), piped, "default context gets updated to latest defer in the chain" ); strictEqual( value, 6, "proper value received" ); }); }); test( "jQuery.when" , function() { expect( 34 ); // 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": {} } , 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 context = {}; jQuery.when( jQuery.Deferred().resolveWith( context ) ).done(function() { strictEqual( this, context, "when( promise ) propagates context" ); }); var cache; 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 : undefined, context2 = defer2 && jQuery.isFunction( defer2.promise ) ? defer2 : 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 ); });