diff --git a/vendor/underscore/test/arrays.js b/vendor/underscore/test/arrays.js
index f53074d67..5ad8b651d 100644
--- a/vendor/underscore/test/arrays.js
+++ b/vendor/underscore/test/arrays.js
@@ -55,18 +55,16 @@ $(document).ready(function() {
 
   test("compact", function() {
     equal(_.compact([0, 1, false, 2, false, 3]).length, 3, 'can trim out all falsy values');
-    var result = (function(){ return _(arguments).compact().length; })(0, 1, false, 2, false, 3);
+    var result = (function(){ return _.compact(arguments).length; })(0, 1, false, 2, false, 3);
     equal(result, 3, 'works on an arguments object');
   });
 
   test("flatten", function() {
-    if (window.JSON) {
-      var list = [1, [2], [3, [[[4]]]]];
-      equal(JSON.stringify(_.flatten(list)), '[1,2,3,4]', 'can flatten nested arrays');
-      equal(JSON.stringify(_.flatten(list, true)), '[1,2,3,[[[4]]]]', 'can shallowly flatten nested arrays');
-      var result = (function(){ return _.flatten(arguments); })(1, [2], [3, [[[4]]]]);
-      equal(JSON.stringify(result), '[1,2,3,4]', 'works on an arguments object');
-    }
+    var list = [1, [2], [3, [[[4]]]]];
+    equal(JSON.stringify(_.flatten(list)), '[1,2,3,4]', 'can flatten nested arrays');
+    equal(JSON.stringify(_.flatten(list, true)), '[1,2,3,[[[4]]]]', 'can shallowly flatten nested arrays');
+    var result = (function(){ return _.flatten(arguments); })(1, [2], [3, [[[4]]]]);
+    equal(JSON.stringify(result), '[1,2,3,4]', 'works on an arguments object');
   });
 
   test("without", function() {
diff --git a/vendor/underscore/test/objects.js b/vendor/underscore/test/objects.js
index 31db69b10..932f48919 100644
--- a/vendor/underscore/test/objects.js
+++ b/vendor/underscore/test/objects.js
@@ -56,8 +56,8 @@ $(document).ready(function() {
 
     try {
       result = {};
-      _.extend(result, null, undefined, { 'a': 1 });
-    } catch(ex) { }
+      _.extend(result, null, undefined, {a:1});
+    } catch(ex) {}
 
     equal(result.a, 1, 'should not error on `null` or `undefined` sources');
   });
@@ -106,8 +106,8 @@ $(document).ready(function() {
 
     try {
       options = {};
-      _.defaults(options, null, undefined, { 'a': 1 });
-    } catch(ex) { }
+      _.defaults(options, null, undefined, {a:1});
+    } catch(ex) {}
 
     equal(options.a, 1, 'should not error on `null` or `undefined` sources');
   });
@@ -351,16 +351,10 @@ $(document).ready(function() {
 
     // Chaining.
     ok(!_.isEqual(_({x: 1, y: undefined}).chain(), _({x: 1, z: 2}).chain()), 'Chained objects containing different values are not equal');
-    equal(_({x: 1, y: 2}).chain().isEqual(_({x: 1, y: 2}).chain()).value(), true, '`isEqual` can be chained');
 
-    // Custom `isEqual` methods.
-    var isEqualObj = {isEqual: function (o) { return o.isEqual == this.isEqual; }, unique: {}};
-    var isEqualObjClone = {isEqual: isEqualObj.isEqual, unique: {}};
-
-    ok(_.isEqual(isEqualObj, isEqualObjClone), 'Both objects implement identical `isEqual` methods');
-    ok(_.isEqual(isEqualObjClone, isEqualObj), 'Commutative equality is implemented for objects with custom `isEqual` methods');
-    ok(!_.isEqual(isEqualObj, {}), 'Objects that do not implement equivalent `isEqual` methods are not equal');
-    ok(!_.isEqual({}, isEqualObj), 'Commutative equality is implemented for objects with different `isEqual` methods');
+    a = _({x: 1, y: 2}).chain();
+    b = _({x: 1, y: 2}).chain();
+    equal(_.isEqual(a.isEqual(b), _(true)), true, '`isEqual` can be chained');
 
     // Objects from another frame.
     ok(_.isEqual({}, iObject));
diff --git a/vendor/underscore/test/utility.js b/vendor/underscore/test/utility.js
index 4fcc7d46a..4da269ddb 100644
--- a/vendor/underscore/test/utility.js
+++ b/vendor/underscore/test/utility.js
@@ -175,10 +175,11 @@ $(document).ready(function() {
 
   test('_.template provides the generated function source, when a SyntaxError occurs', function() {
     try {
-      _.template('<b><%= if %></b>');
-    } catch (e) {
-      ok(e.source.indexOf('( if )') > 0);
+      _.template('<b><%= if x %></b>');
+    } catch (ex) {
+      var source = ex.source;
     }
+    ok(/__p/.test(source));
   });
 
   test('_.template handles \\u2028 & \\u2029', function() {