jquery/test/unit/deferred.js

223 lines
5.7 KiB
JavaScript

module("deferred", { teardown: moduleTeardown });
test("jQuery._Deferred()", function() {
expect( 11 );
var deferred,
object,
test;
deferred = jQuery._Deferred();
test = false;
deferred.done( function( value ) {
equals( value , "value" , "Test pre-resolve callback" );
test = true;
} );
deferred.resolve( "value" );
ok( test , "Test pre-resolve callbacks called right away" );
test = false;
deferred.done( function( value ) {
equals( value , "value" , "Test post-resolve callback" );
test = true;
} );
ok( test , "Test post-resolve callbacks called right away" );
deferred.cancel();
test = true;
deferred.done( function() {
ok( false , "Cancel was ignored" );
test = false;
} );
ok( test , "Test cancel" );
deferred = jQuery._Deferred().resolve();
try {
deferred.done( function() {
throw "Error";
} , function() {
ok( true , "Test deferred do not cancel on exception" );
} );
} catch( e ) {
strictEqual( e , "Error" , "Test deferred propagates exceptions");
deferred.done();
}
test = "";
deferred = jQuery._Deferred().done( function() {
test += "A";
}, function() {
test += "B";
} ).resolve();
strictEqual( test , "AB" , "Test multiple done parameters" );
test = "";
deferred.done( function() {
deferred.done( function() {
test += "C";
} );
test += "A";
}, function() {
test += "B";
} );
strictEqual( test , "ABC" , "Test done callbacks order" );
deferred = jQuery._Deferred();
deferred.resolveWith( jQuery , [ document ] ).done( function( doc ) {
ok( this === jQuery && arguments.length === 1 && doc === document , "Test fire context & args" );
});
// #8421
deferred = jQuery._Deferred();
deferred.resolveWith().done(function() {
ok( true, "Test resolveWith can be called with no argument" );
});
});
test("jQuery.Deferred()", function() {
expect( 10 );
jQuery.Deferred( function( defer ) {
strictEqual( this , defer , "Defer passed as this & first argument" );
this.resolve( "done" );
}).then( function( value ) {
strictEqual( value , "done" , "Passed function executed" );
});
jQuery.Deferred().resolve().then( function() {
ok( true , "Success on resolve" );
}, function() {
ok( false , "Error on resolve" );
});
jQuery.Deferred().reject().then( function() {
ok( false , "Success on reject" );
}, function() {
ok( true , "Error on reject" );
});
( new jQuery.Deferred( function( defer ) {
strictEqual( this , defer , "Defer passed as this & first argument (new)" );
this.resolve( "done" );
}) ).then( function( value ) {
strictEqual( value , "done" , "Passed function executed (new)" );
});
( new jQuery.Deferred() ).resolve().then( function() {
ok( true , "Success on resolve (new)" );
}, function() {
ok( false , "Error on resolve (new)" );
});
( new jQuery.Deferred() ).reject().then( function() {
ok( false , "Success on reject (new)" );
}, function() {
ok( true , "Error on reject (new)" );
});
var tmp = jQuery.Deferred();
strictEqual( tmp.promise() , tmp.promise() , "Test deferred always return same promise" );
strictEqual( tmp.promise() , tmp.promise().promise() , "Test deferred's promise always return same promise as deferred" );
});
test("jQuery.when()", function() {
expect( 23 );
// 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 ).then( function( resolveValue ) {
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().then( function( resolveValue ) {
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, i;
for( i = 1 ; i < 4 ; i++ ) {
jQuery.when( cache || jQuery.Deferred( function() {
this.resolve( i );
}) ).then( function( value ) {
strictEqual( value , 1 , "Function executed" + ( i > 1 ? " only once" : "" ) );
cache = value;
}, function() {
ok( false , "Fail called" );
});
}
});
test("jQuery.when() - joined", function() {
expect(8);
jQuery.when( 1, 2, 3 ).done( function( a, b, c ) {
strictEqual( a , 1 , "Test first param is first resolved value - non-observables" );
strictEqual( b , 2 , "Test second param is second resolved value - non-observables" );
strictEqual( c , 3 , "Test third param is third resolved value - non-observables" );
}).fail( function() {
ok( false , "Test the created deferred was resolved - non-observables");
});
var successDeferred = jQuery.Deferred().resolve( 1 , 2 , 3 ),
errorDeferred = jQuery.Deferred().reject( "error" , "errorParam" );
jQuery.when( 1 , successDeferred , 3 ).done( function( a, b, c ) {
strictEqual( a , 1 , "Test first param is first resolved value - resolved observable" );
same( b , [ 1 , 2 , 3 ] , "Test second param is second resolved value - resolved observable" );
strictEqual( c , 3 , "Test third param is third resolved value - resolved observable" );
}).fail( function() {
ok( false , "Test the created deferred was resolved - resolved observable");
});
jQuery.when( 1 , errorDeferred , 3 ).done( function() {
ok( false , "Test the created deferred was rejected - rejected observable");
}).fail( function( error , errorParam ) {
strictEqual( error , "error" , "Test first param is first rejected value - rejected observable" );
strictEqual( errorParam , "errorParam" , "Test second param is second rejected value - rejected observable" );
});
});