merging ratbeard's numerous improvements

index.html

@@ -4,6 +4,7 @@
   <meta http-equiv="content-type" content="text/html;charset=UTF-8" />
   <meta http-equiv="X-UA-Compatible" content="chrome=1">
   <title>Underscore.js</title>
+  <script src="underscore.js"></script>
   <style>
     body {
       font-size: 16px;

test/collections.js

@@ -164,5 +164,12 @@ $(document).ready(function() {
   test('collections: size', function() {
     equals(_.size({one : 1, two : 2, three : 3}), 3, 'can compute the size of an object');
   });
+
+  test('collections: buildLookup', function() {
+    same(_.buildLookup([1,'hi']), {1:true, 'hi':true}, 'defaults values to true');
+    same(_.buildLookup([1,'hi'], 1), {1:1, 'hi':1}, 'can override value');
+    same(_.buildLookup({5:'five'}), {five: true}, 'making a map from an object uses its values');
+  });
+
 
 });

test/objects.js

@@ -11,13 +11,13 @@ $(document).ready(function() {
   });
 
   test("objects: functions", function() {
-    var expected = ["all", "any", "bind", "bindAll", "breakLoop", "clone", "compact",
+    var expected = ["alias", "all", "any", "bind", "bindAll", "breakLoop", "buildLookup", "clone", "compact",
     "compose","defer", "delay", "detect", "each", "every", "extend", "filter", "first",
     "flatten", "foldl", "foldr", "forEach", "functions", "head", "identity", "include",
     "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", "tap", "template", "toArray", "uniq",
+    "size", "some", "sortBy", "sortedIndex", "tail", "tap", "template", "times", "toArray", "uniq",
     "uniqueId", "values", "without", "wrap", "zip"];
     ok(_(expected).isEqual(_.methods(_)), 'provides a sorted list of functions');
     var obj = {a : 'dash', b : _.map, c : (/yo/), d : _.reduce};
@@ -60,6 +60,8 @@ $(document).ready(function() {
     ok(_.isEmpty([]), '[] is empty');
     ok(!_.isEmpty({one : 1}), '{one : 1} is not empty');
     ok(_.isEmpty({}), '{} is empty');
+    ok(_.isEmpty(null), 'null is empty');
+    ok(_.isEmpty(), 'undefined is empty');
 
     var obj = {one : 1};
     delete obj.one;
@@ -183,4 +185,19 @@ $(document).ready(function() {
       value();
     ok(returned == 6 && intercepted == 6, 'can use tapped objects in a chain');
   });
+
+
+  test("objects: alias", function() {
+    _.alias('isEqual', 'isTheSame');
+    ok(_.isTheSame(9, 9), 'by default aliases methods on underscore');
+    delete _.isTheSame;
+    //
+    var o = { hi: function () {return 9;} };
+    _.alias(o, 'hi', 'ho');
+    equals(o.ho(), 9, 'can add an alias on another object');
+    _.alias(o, 'hi', 'there', 'sir');
+    ok(o.hi==o.sir, 'can add multiple aliases');
+  });
+
+
 });

test/utility.js

@@ -29,6 +29,17 @@ $(document).ready(function() {
     while(i++ < 100) ids.push(_.uniqueId());
     equals(_.uniq(ids).length, ids.length, 'can generate a globally-unique stream of ids');
   });
+
+  test("utility: times", function() {
+    var vals = [];
+    _.times(3, function (i) { vals.push(i); });
+    ok(_.isEqual(vals, [0,1,2]), "is 0 indexed");
+    //
+    vals = [];
+    _(3).times(function (i) { vals.push(i); });
+    ok(_.isEqual(vals, [0,1,2]), "works as a wrapper");
+  });
+
 
   test("utility: template", function() {
     var basicTemplate = _.template("<%= thing %> is gettin' on my noives!");