From b9153258b0f0edbff49496ed16d2aa93bec07d95 Mon Sep 17 00:00:00 2001 From: Jörn Zaefferer Date: Wed, 11 May 2011 13:37:40 -0400 Subject: Widget: Added $.widget.extend() which does deep extending, but only on plain objects. --- tests/unit/widget/widget_extend.js | 104 +++++++++++++++++++++++++++++++++++++ 1 file changed, 104 insertions(+) create mode 100644 tests/unit/widget/widget_extend.js (limited to 'tests/unit/widget/widget_extend.js') diff --git a/tests/unit/widget/widget_extend.js b/tests/unit/widget/widget_extend.js new file mode 100644 index 000000000..fb78ecfb7 --- /dev/null +++ b/tests/unit/widget/widget_extend.js @@ -0,0 +1,104 @@ +test( "$.widget.extend()", function() { + expect( 26 ); + + var settings = { xnumber1: 5, xnumber2: 7, xstring1: "peter", xstring2: "pan" }, + options = { xnumber2: 1, xstring2: "x", xxx: "newstring" }, + optionsCopy = { xnumber2: 1, xstring2: "x", xxx: "newstring" }, + merged = { xnumber1: 5, xnumber2: 1, xstring1: "peter", xstring2: "x", xxx: "newstring" }, + deep1 = { foo: { bar: true } }, + deep1copy = { foo: { bar: true } }, + deep2 = { foo: { baz: true }, foo2: document }, + deep2copy = { foo: { baz: true }, foo2: document }, + deepmerged = { foo: { bar: true, baz: true }, foo2: document }, + arr = [1, 2, 3], + nestedarray = { arr: arr }, + ret; + + $.widget.extend( settings, options ); + deepEqual( settings, merged, "Check if extended: settings must be extended" ); + deepEqual( options, optionsCopy, "Check if not modified: options must not be modified" ); + + $.widget.extend( deep1, deep2 ); + deepEqual( deep1.foo, deepmerged.foo, "Check if foo: settings must be extended" ); + deepEqual( deep2.foo, deep2copy.foo, "Check if not deep2: options must not be modified" ); + equal( deep1.foo2, document, "Make sure that a deep clone was not attempted on the document" ); + + strictEqual( $.widget.extend({}, nestedarray).arr, arr, "Don't clone arrays" ); + ok( $.isPlainObject( $.widget.extend({ arr: arr }, { arr: {} }).arr ), "Cloned object heve to be an plain object" ); + + var empty = {}; + var optionsWithLength = { foo: { length: -1 } }; + $.widget.extend( empty, optionsWithLength ); + deepEqual( empty.foo, optionsWithLength.foo, "The length property must copy correctly" ); + + empty = {}; + var optionsWithDate = { foo: { date: new Date } }; + $.widget.extend( empty, optionsWithDate ); + deepEqual( empty.foo, optionsWithDate.foo, "Dates copy correctly" ); + + var myKlass = function() {}; + var customObject = new myKlass(); + var optionsWithCustomObject = { foo: { date: customObject } }; + empty = {}; + $.widget.extend( empty, optionsWithCustomObject ); + strictEqual( empty.foo.date, customObject, "Custom objects copy correctly (no methods)" ); + + // Makes the class a little more realistic + myKlass.prototype = { someMethod: function(){} }; + empty = {}; + $.widget.extend( empty, optionsWithCustomObject ); + strictEqual( empty.foo.date, customObject, "Custom objects copy correctly" ); + + ret = $.widget.extend({ foo: 4 }, { foo: new Number(5) } ); + equal( ret.foo, 5, "Wrapped numbers copy correctly" ); + + var nullUndef; + nullUndef = $.widget.extend( {}, options, { xnumber2: null } ); + strictEqual( nullUndef.xnumber2, null, "Check to make sure null values are copied"); + + nullUndef = $.widget.extend( {}, options, { xnumber2: undefined } ); + strictEqual( nullUndef.xnumber2, options.xnumber2, "Check to make sure undefined values are not copied"); + + nullUndef = $.widget.extend( {}, options, { xnumber0: null } ); + strictEqual( nullUndef.xnumber0, null, "Check to make sure null values are inserted"); + + var target = {}; + var recursive = { foo:target, bar:5 }; + $.widget.extend( target, recursive ); + deepEqual( target, { foo: {}, bar: 5 }, "Check to make sure a recursive obj doesn't go never-ending loop by not copying it over" ); + + ret = $.widget.extend( { foo: [] }, { foo: [0] } ); // 1907 + equal( ret.foo.length, 1, "Check to make sure a value with coersion 'false' copies over when necessary to fix #1907" ); + + ret = $.widget.extend( { foo: "1,2,3" }, { foo: [1, 2, 3] } ); + strictEqual( typeof ret.foo, "object", "Check to make sure values equal with coersion (but not actually equal) overwrite correctly" ); + + ret = $.widget.extend( { foo:"bar" }, { foo:null } ); + strictEqual( typeof ret.foo, "object", "Make sure a null value doesn't crash with deep extend, for #1908" ); + + var obj = { foo:null }; + $.widget.extend( obj, { foo:"notnull" } ); + equal( obj.foo, "notnull", "Make sure a null value can be overwritten" ); + + var defaults = { xnumber1: 5, xnumber2: 7, xstring1: "peter", xstring2: "pan" }, + defaultsCopy = { xnumber1: 5, xnumber2: 7, xstring1: "peter", xstring2: "pan" }, + options1 = { xnumber2: 1, xstring2: "x" }, + options1Copy = { xnumber2: 1, xstring2: "x" }, + options2 = { xstring2: "xx", xxx: "newstringx" }, + options2Copy = { xstring2: "xx", xxx: "newstringx" }, + merged2 = { xnumber1: 5, xnumber2: 1, xstring1: "peter", xstring2: "xx", xxx: "newstringx" }; + + var settings = $.widget.extend( {}, defaults, options1, options2 ); + deepEqual( settings, merged2, "Check if extended: settings must be extended" ); + deepEqual( defaults, defaultsCopy, "Check if not modified: options1 must not be modified" ); + deepEqual( options1, options1Copy, "Check if not modified: options1 must not be modified" ); + deepEqual( options2, options2Copy, "Check if not modified: options2 must not be modified" ); + + var input = { + key: [ 1, 2, 3 ] + } + var output = $.widget.extend( {}, input ); + deepEqual( input, output, "don't clone arrays" ); + input.key[0] = 10; + deepEqual( input, output, "don't clone arrays" ); +}); -- cgit v1.2.3