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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",
"once": "XABC X X X X X XABA X",
"memory": "XABC XABC XABCABCCC XA XBB XB XABA XC",
"unique": "XABC X XABCA X XBB X XAB X",
"stopOnFalse": "XABC X XABCABCC X XBB X XA X",
"once memory": "XABC XABC X XA X XA XABA XC",
"once unique": "XABC X X X X X XAB X",
"once stopOnFalse": "XABC X X X X X XA X",
"memory unique": "XABC XA XABCA XA XBB XB XAB XC",
"memory stopOnFalse": "XABC XABC XABCABCCC XA XBB XB XA X",
"unique stopOnFalse": "XABC X XABCA X XBB X XA 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, filter ) {
jQuery.each( { "string": strFlags, "object": objectFlags }, function( flagsTypes, flags ) {
test( "jQuery.Callbacks( " + showFlags( flags ) + " ) - " + filterLabel, function() {
expect( 20 );
// 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" );
// 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" );
});
});
});
});
})();
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();
});
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