module( "callbacks", { teardown: moduleTeardown }); (function() { var output, addToOutput = function( string ) { return function() { output += string; }; }, outputA = addToOutput("A"), outputB = addToOutput("B"), outputC = addToOutput("C"), tests = { "": "XABC X XABCABCC X XBB X XABA X XX", "once": "XABC X X X X X XABA X XX", "memory": "XABC XABC XABCABCCC XA XBB XB XABA XC XX", "unique": "XABC X XABCA X XBB X XAB X X", "stopOnFalse": "XABC X XABCABCC X XBB X XA X XX", "once memory": "XABC XABC X XA X XA XABA XC XX", "once unique": "XABC X X X X X XAB X X", "once stopOnFalse": "XABC X X X X X XA X XX", "memory unique": "XABC XA XABCA XA XBB XB XAB XC X", "memory stopOnFalse": "XABC XABC XABCABCCC XA XBB XB XA X XX", "unique stopOnFalse": "XABC X XABCA X XBB X XA X X" }, filters = { "no filter": undefined, "filter": function( fn ) { return function() { return fn.apply( this, arguments ); }; } }; function showFlags( flags ) { if ( typeof flags === "string" ) { return "'" + flags + "'"; } var output = [], key; for ( key in flags ) { output.push( "'" + key + "': " + flags[ key ] ); } return "{ " + output.join( ", " ) + " }"; } jQuery.each( tests, function( strFlags, resultString ) { var objectFlags = {}; jQuery.each( strFlags.split( " " ), function() { if ( this.length ) { objectFlags[ this ] = true; } }); jQuery.each( filters, function( filterLabel ) { jQuery.each({ "string": strFlags, "object": objectFlags }, function( flagsTypes, flags ) { test( "jQuery.Callbacks( " + showFlags( flags ) + " ) - " + filterLabel, function() { expect( 21 ); // Give qunit a little breathing room stop(); setTimeout( start, 0 ); var cblist, results = resultString.split( /\s+/ ); // Basic binding and firing output = "X"; cblist = jQuery.Callbacks( flags ); cblist.add(function( str ) { output += str; }); cblist.fire("A"); strictEqual( output, "XA", "Basic binding and firing" ); strictEqual( cblist.fired(), true, ".fired() detects firing" ); output = "X"; cblist.disable(); cblist.add(function( str ) { output += str; }); strictEqual( output, "X", "Adding a callback after disabling" ); cblist.fire("A"); strictEqual( output, "X", "Firing after disabling" ); // #13517 - Emptying while firing cblist = jQuery.Callbacks( flags ); cblist.add( cblist.empty ); cblist.add( function() { ok( false, "not emptied" ); } ); cblist.fire(); // Disabling while firing cblist = jQuery.Callbacks( flags ); cblist.add( cblist.disable ); cblist.add( function() { ok( false, "not disabled" ); } ); cblist.fire(); // Basic binding and firing (context, arguments) output = "X"; cblist = jQuery.Callbacks( flags ); cblist.add(function() { equal( this, window, "Basic binding and firing (context)" ); output += Array.prototype.join.call( arguments, "" ); }); cblist.fireWith( window, [ "A", "B" ] ); strictEqual( output, "XAB", "Basic binding and firing (arguments)" ); // fireWith with no arguments output = ""; cblist = jQuery.Callbacks( flags ); cblist.add(function() { equal( this, window, "fireWith with no arguments (context is window)" ); strictEqual( arguments.length, 0, "fireWith with no arguments (no arguments)" ); }); cblist.fireWith(); // Basic binding, removing and firing output = "X"; cblist = jQuery.Callbacks( flags ); cblist.add( outputA, outputB, outputC ); cblist.remove( outputB, outputC ); cblist.fire(); strictEqual( output, "XA", "Basic binding, removing and firing" ); // Empty output = "X"; cblist = jQuery.Callbacks( flags ); cblist.add( outputA ); cblist.add( outputB ); cblist.add( outputC ); cblist.empty(); cblist.fire(); strictEqual( output, "X", "Empty" ); // Locking output = "X"; cblist = jQuery.Callbacks( flags ); cblist.add(function( str ) { output += str; }); cblist.lock(); cblist.add(function( str ) { output += str; }); cblist.fire("A"); cblist.add(function( str ) { output += str; }); strictEqual( output, "X", "Lock early" ); // Ordering output = "X"; cblist = jQuery.Callbacks( flags ); cblist.add(function() { cblist.add( outputC ); outputA(); }, outputB ); cblist.fire(); strictEqual( output, results.shift(), "Proper ordering" ); // Add and fire again output = "X"; cblist.add(function() { cblist.add( outputC ); outputA(); }, outputB ); strictEqual( output, results.shift(), "Add after fire" ); output = "X"; cblist.fire(); strictEqual( output, results.shift(), "Fire again" ); // Multiple fire output = "X"; cblist = jQuery.Callbacks( flags ); cblist.add(function( str ) { output += str; }); cblist.fire("A"); strictEqual( output, "XA", "Multiple fire (first fire)" ); output = "X"; cblist.add(function( str ) { output += str; }); strictEqual( output, results.shift(), "Multiple fire (first new callback)" ); output = "X"; cblist.fire("B"); strictEqual( output, results.shift(), "Multiple fire (second fire)" ); output = "X"; cblist.add(function( str ) { output += str; }); strictEqual( output, results.shift(), "Multiple fire (second new callback)" ); // Return false output = "X"; cblist = jQuery.Callbacks( flags ); cblist.add( outputA, function() { return false; }, outputB ); cblist.add( outputA ); cblist.fire(); strictEqual( output, results.shift(), "Callback returning false" ); // Add another callback (to control lists with memory do not fire anymore) output = "X"; cblist.add( outputC ); strictEqual( output, results.shift(), "Adding a callback after one returned false" ); // Callbacks are not iterated output = ""; function handler() { output += "X"; } handler.method = function() { output += "!"; }; cblist = jQuery.Callbacks( flags ); cblist.add( handler ); cblist.add( handler ); cblist.fire(); strictEqual( output, results.shift(), "No callback iteration" ); }); }); }); }); })(); test( "jQuery.Callbacks( options ) - options are copied", function() { expect( 1 ); var options = { "unique": true }, cb = jQuery.Callbacks( options ), count = 0, fn = function() { ok( !( count++ ), "called once" ); }; options["unique"] = false; cb.add( fn, fn ); cb.fire(); }); test( "jQuery.Callbacks.fireWith - arguments are copied", function() { expect( 1 ); var cb = jQuery.Callbacks("memory"), args = ["hello"]; cb.fireWith( null, args ); args[ 0 ] = "world"; cb.add(function( hello ) { strictEqual( hello, "hello", "arguments are copied internally" ); }); }); test( "jQuery.Callbacks.remove - should remove all instances", function() { expect( 1 ); var cb = jQuery.Callbacks(); function fn() { ok( false, "function wasn't removed" ); } cb.add( fn, fn, function() { ok( true, "end of test" ); }).remove( fn ).fire(); }); test( "jQuery.Callbacks.has", function() { expect( 13 ); var cb = jQuery.Callbacks(); function getA() { return "A"; } function getB() { return "B"; } function getC() { return "C"; } cb.add(getA, getB, getC); strictEqual( cb.has(), true, "No arguments to .has() returns whether callback function(s) are attached or not" ); strictEqual( cb.has(getA), true, "Check if a specific callback function is in the Callbacks list" ); cb.remove(getB); strictEqual( cb.has(getB), false, "Remove a specific callback function and make sure its no longer there" ); strictEqual( cb.has(getA), true, "Remove a specific callback function and make sure other callback function is still there" ); cb.empty(); strictEqual( cb.has(), false, "Empty list and make sure there are no callback function(s)" ); strictEqual( cb.has(getA), false, "Check for a specific function in an empty() list" ); cb.add(getA, getB, function(){ strictEqual( cb.has(), true, "Check if list has callback function(s) from within a callback function" ); strictEqual( cb.has(getA), true, "Check if list has a specific callback from within a callback function" ); }).fire(); strictEqual( cb.has(), true, "Callbacks list has callback function(s) after firing" ); cb.disable(); strictEqual( cb.has(), false, "disabled() list has no callback functions (returns false)" ); strictEqual( cb.has(getA), false, "Check for a specific function in a disabled() list" ); cb = jQuery.Callbacks("unique"); cb.add(getA); cb.add(getA); strictEqual( cb.has(), true, "Check if unique list has callback function(s) attached" ); cb.lock(); strictEqual( cb.has(), false, "locked() list is empty and returns false" ); }); test( "jQuery.Callbacks() - adding a string doesn't cause a stack overflow", function() { expect( 1 ); jQuery.Callbacks().add( "hello world" ); ok( true, "no stack overflow" ); }); test( "jQuery.Callbacks() - disabled callback doesn't fire (gh-1790)", function() { expect( 1 ); var cb = jQuery.Callbacks(), fired = false, shot = function() { fired = true; }; cb.disable(); cb.empty(); cb.add( shot ); cb.fire(); ok( !fired, "Disabled callback function didn't fire" ); });