QUnit.test( 'makeArray', function( assert ) { let makeArray = fizzyUIUtils.makeArray; let aryA = [ 0, 1, 2 ]; let aryB = makeArray( aryA ); assert.deepEqual( aryA, aryB, 'makeArray on array returns same array' ); let itemElems = document.querySelectorAll('.grid-a .item'); let items = makeArray( itemElems ); assert.ok( Array.isArray( items ), 'makeArray on querySelectorAll NodeList' ); assert.equal( items.length, itemElems.length, 'length matches' ); let grids = makeArray( document.querySelector('.grid-a') ); assert.ok( Array.isArray( grids ), 'makeArray on single element is array' ); assert.equal( grids.length, 1, 'length = 1' ); let empty = makeArray(); assert.deepEqual( empty, [], 'makeArray on undefined is empty array' ); assert.equal( empty.length, 0, 'length = 0' ); assert.ok( empty[0] === undefined, '[0] is undefined' ); // isotope#1235 let aryC = makeArray('foo'); assert.deepEqual( aryC, [ 'foo' ], 'string turns to single array item' ); let nullAry = makeArray( null ); assert.deepEqual( nullAry, [], 'makeArray(null) returns empty array' ); let falseAry = makeArray( false ); assert.deepEqual( falseAry, [ false ], 'makeArray(false) returns array with false' ); assert.equal( falseAry.length, 1, 'falseyAry has 1 item' ); } );