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define( [
"qunit",
"jquery",
"lib/helper",
"ui/widgets/draggable"
], function( QUnit, $, helper ) {
"use strict";
var element;
QUnit.module( "draggable: events", {
beforeEach: function() {
element = $( "<div>" ).appendTo( "#qunit-fixture" );
},
afterEach: function() {
element.draggable( "destroy" );
return helper.moduleAfterEach.apply( this, arguments );
}
} );
QUnit.test( "callbacks occurrence count", function( assert ) {
assert.expect( 3 );
var start = 0,
stop = 0,
dragc = 0;
element.draggable( {
start: function() {
start++;
},
drag: function() {
dragc++;
},
stop: function() {
stop++;
}
} );
element.simulate( "drag", {
dx: 10,
dy: 10
} );
assert.equal( start, 1, "start callback should happen exactly once" );
assert.equal( dragc, 3, "drag callback should happen exactly once per mousemove" );
assert.equal( stop, 1, "stop callback should happen exactly once" );
} );
QUnit.test( "stopping the start callback", function( assert ) {
assert.expect( 3 );
var start = 0,
stop = 0,
dragc = 0;
element.draggable( {
start: function() {
start++;
return false;
},
drag: function() {
dragc++;
},
stop: function() {
stop++;
}
} );
element.simulate( "drag", {
dx: 10,
dy: 10
} );
assert.equal( start, 1, "start callback should happen exactly once" );
assert.equal( dragc, 0, "drag callback should not happen at all" );
assert.equal( stop, 0, "stop callback should not happen if there wasnt even a start" );
} );
QUnit.test( "stopping the drag callback", function( assert ) {
assert.expect( 2 );
var start = 0,
stop = 0,
dragc = 0;
element.draggable( {
start: function() {
start++;
},
drag: function() {
dragc++;
return false;
},
stop: function() {
stop++;
}
} );
element.simulate( "drag", {
dx: 10,
dy: 10
} );
assert.equal( start, 1, "start callback should happen exactly once" );
assert.equal( stop, 1, "stop callback should happen, as we need to actively stop the drag" );
} );
QUnit.test( "stopping the stop callback", function( assert ) {
assert.expect( 1 );
element.draggable( {
helper: "clone",
stop: function() {
return false;
}
} );
element.simulate( "drag", {
dx: 10,
dy: 10
} );
assert.ok( element.draggable( "instance" ).helper, "the clone should not be deleted if the stop callback is stopped" );
} );
// https://bugs.jqueryui.com/ticket/6884
// Draggable: ui.offset.left differs between the "start" and "drag" hooks
QUnit.test( "position and offset in hash is consistent between start, drag, and stop", function( assert ) {
assert.expect( 4 );
var startPos, startOffset, dragPos, dragOffset, stopPos, stopOffset;
element = $( "<div style='margin: 2px;'></div>" ).appendTo( "#qunit-fixture" );
element.draggable( {
start: function( event, ui ) {
startPos = ui.position;
startOffset = ui.offset;
},
drag: function( event, ui ) {
dragPos = ui.position;
dragOffset = ui.offset;
},
stop: function( event, ui ) {
stopPos = ui.position;
stopOffset = ui.offset;
}
} );
element.simulate( "drag", {
dx: 10,
dy: 10,
moves: 1
} );
startPos.left += 10;
startPos.top += 10;
startOffset.left += 10;
startOffset.top += 10;
assert.deepEqual( startPos, dragPos, "start position equals drag position plus distance" );
assert.deepEqual( dragPos, stopPos, "drag position equals stop position" );
assert.deepEqual( startOffset, dragOffset, "start offset equals drag offset plus distance" );
assert.deepEqual( dragOffset, stopOffset, "drag offset equals stop offset" );
} );
} );
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