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added an isEmpty function that works on arrays and objects

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This commit is contained in:
Jeremy Ashkenas
2009-11-07 23:04:18 -05:00
parent d4f6e1a42f
commit b5920e94a3
4 changed files with 32 additions and 5 deletions
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11
test/objects.js
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@@ -36,6 +36,17 @@ $(document).ready(function() {
ok(_(moe).isEqual(clone), 'OO-style deep equality works');
});
test("objects: isEmpty", function() {
ok(!_([1]).isEmpty(), '[1] is not empty');
ok(_.isEmpty([]), '[] is empty');
ok(!_.isEmpty({one : 1}), '{one : 1} is not empty');
ok(_.isEmpty({}), '{} is empty');
var obj = {one : 1};
delete obj.one;
ok(_.isEmpty(obj), 'deleting all the keys from an object empties it');
});
test("objects: isElement", function() {
ok(!_.isElement('div'), 'strings are not dom elements');
ok(_.isElement($('html')[0]), 'the html tag is a DOM element');

2
test/utility.js
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@@ -25,7 +25,7 @@ $(document).ready(function() {
var expected = ["all", "any", "bind", "bindAll", "clone", "compact", "compose",
"defer", "delay", "detect", "each", "every", "extend", "filter", "first",
"flatten", "foldl", "foldr", "forEach", "functions", "identity", "include",
"indexOf", "inject", "intersect", "invoke", "isArray", "isElement", "isEqual",
"indexOf", "inject", "intersect", "invoke", "isArray", "isElement", "isEmpty", "isEqual",
"isFunction", "isUndefined", "keys", "last", "lastIndexOf", "map", "max",
"methods", "min", "pluck", "reduce", "reduceRight", "reject", "select",
"size", "some", "sortBy", "sortedIndex", "template", "toArray", "uniq",