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adding an isArguments checker and enabling iteration (using each) over JS object hashes that have numeric length properties

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This commit is contained in:
Jeremy Ashkenas
2009-12-09 13:41:19 -05:00
parent 225d795836
commit 5c314d206e
4 changed files with 48 additions and 15 deletions
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4
test/collections.js
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@@ -29,6 +29,10 @@ $(document).ready(function() {
answer = null;
_.each([1, 2, 3], function(num, index, arr){ if (_.include(arr, num)) answer = true; });
ok(answer, 'can reference the original collection from inside the iterator');
answers = [];
_.each({range : 1, speed : 2, length : 3}, function(v){ answers.push(v); });
ok(answers.join(', '), '1, 2, 3', 'can iterate over objects with numeric length properties');
});
test('collections: map', function() {

9
test/objects.js
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@@ -14,7 +14,7 @@ $(document).ready(function() {
var expected = ["all", "any", "bind", "bindAll", "breakLoop", "clone", "compact",
"compose","defer", "delay", "detect", "each", "every", "extend", "filter", "first",
"flatten", "foldl", "foldr", "forEach", "functions", "head", "identity", "include",
"indexOf", "inject", "intersect", "invoke", "isArray", "isDate", "isElement", "isEmpty", "isEqual",
"indexOf", "inject", "intersect", "invoke", "isArguments", "isArray", "isDate", "isElement", "isEmpty", "isEqual",
"isFunction", "isNaN", "isNull", "isNumber", "isRegExp", "isString", "isUndefined", "keys", "last", "lastIndexOf", "map", "max",
"methods", "min", "noConflict", "pluck", "range", "reduce", "reduceRight", "reject", "rest", "select",
"size", "some", "sortBy", "sortedIndex", "tail", "template", "toArray", "uniq",
@@ -71,6 +71,13 @@ $(document).ready(function() {
ok(_.isElement($('html')[0]), 'the html tag is a DOM element');
});
test("objects: isArguments", function() {
var args = (function(){ return arguments; })(1, 2, 3);
ok(_.isArguments(args), 'the arguments object is an arguments object');
ok(!_.isArguments(_.toArray(args)), 'but not when it\'s converted into an array');
ok(!_.isArguments([1,2,3]), 'and not vanilla arrays.');
});
test("objects: isArray", function() {
ok(!_.isArray(arguments), 'the arguments object is not an array');
ok(_.isArray([1, 2, 3]), 'but arrays are');