diff --git a/test/underscore.html b/test/underscore.html
index 3a2180c80..13127378b 100644
--- a/test/underscore.html
+++ b/test/underscore.html
@@ -76,6 +76,11 @@
 					'bindAll': [
 						'throws an error for bindAll with no functions named'
 					],
+					'memoize': [
+						'{"bar":"BAR","foo":"FOO"}',
+						'"BAR"',
+						'"FOO"'
+					],
 					'negate': true,
 					'partial': [
 						'can partially apply with placeholders',
@@ -135,7 +140,7 @@
 				delete QUnit.config.excused.Utility.times;
 				delete QUnit.config.excused.Utility.uniqueId;
 			}
-			// only excuse in non-Underscore builds
+			// only excuse for non-Underscore builds
 			if (/\bunderscore\b/i.test(ui.buildPath)) {
 				if (!ui.isModularize) {
 					delete QUnit.config.excused.Functions.partial;
@@ -149,7 +154,9 @@
 				delete QUnit.config.excused.Utility['_.escape'];
 				delete QUnit.config.excused.Utility['_.unescape'];
 			}
+			// only execuse edge features for the Underscore build
 			else {
+				delete QUnit.config.excused.Functions.memoize;
 				delete QUnit.config.excused.Functions.negate;
 				delete QUnit.config.excused.Objects.pick;
 				delete QUnit.config.excused.Utility.noop;
diff --git a/vendor/underscore/test/arrays.js b/vendor/underscore/test/arrays.js
index ae640f691..7370ffcc0 100644
--- a/vendor/underscore/test/arrays.js
+++ b/vendor/underscore/test/arrays.js
@@ -182,16 +182,16 @@
   test('object', function() {
     var result = _.object(['moe', 'larry', 'curly'], [30, 40, 50]);
     var shouldBe = {moe: 30, larry: 40, curly: 50};
-    ok(_.isEqual(result, shouldBe), 'two arrays zipped together into an object');
+    deepEqual(result, shouldBe, 'two arrays zipped together into an object');
 
     result = _.object([['one', 1], ['two', 2], ['three', 3]]);
     shouldBe = {one: 1, two: 2, three: 3};
-    ok(_.isEqual(result, shouldBe), 'an array of pairs zipped together into an object');
+    deepEqual(result, shouldBe, 'an array of pairs zipped together into an object');
 
     var stooges = {moe: 30, larry: 40, curly: 50};
-    ok(_.isEqual(_.object(_.pairs(stooges)), stooges), 'an object converted to pairs and back to an object');
+    deepEqual(_.object(_.pairs(stooges)), stooges, 'an object converted to pairs and back to an object');
 
-    ok(_.isEqual(_.object(null), {}), 'handles nulls');
+    deepEqual(_.object(null), {}, 'handles nulls');
   });
 
   test('indexOf', function() {
diff --git a/vendor/underscore/test/objects.js b/vendor/underscore/test/objects.js
index c29cd6d4a..32a61e66c 100644
--- a/vendor/underscore/test/objects.js
+++ b/vendor/underscore/test/objects.js
@@ -27,7 +27,7 @@
   test('invert', function() {
     var obj = {first: 'Moe', second: 'Larry', third: 'Curly'};
     deepEqual(_.keys(_.invert(obj)), ['Moe', 'Larry', 'Curly'], 'can invert an object');
-    ok(_.isEqual(_.invert(_.invert(obj)), obj), 'two inverts gets you back where you started');
+    deepEqual(_.invert(_.invert(obj)), obj, 'two inverts gets you back where you started');
 
     var obj = {length: 3};
     ok(_.invert(obj)['3'] == 'length', 'can invert an object with "length"')
@@ -35,7 +35,7 @@
 
   test('functions', function() {
     var obj = {a : 'dash', b : _.map, c : (/yo/), d : _.reduce};
-    ok(_.isEqual(['b', 'd'], _.functions(obj)), 'can grab the function names of any passed-in object');
+    deepEqual(['b', 'd'], _.functions(obj), 'can grab the function names of any passed-in object');
 
     var Animal = function(){};
     Animal.prototype.run = function(){};
@@ -48,9 +48,9 @@
     equal(_.extend({a: 'x'}, {a: 'b'}).a, 'b', 'properties in source override destination');
     equal(_.extend({x: 'x'}, {a: 'b'}).x, 'x', "properties not in source don't get overriden");
     result = _.extend({x: 'x'}, {a: 'a'}, {b: 'b'});
-    ok(_.isEqual(result, {x: 'x', a: 'a', b: 'b'}), 'can extend from multiple source objects');
+    deepEqual(result, {x: 'x', a: 'a', b: 'b'}, 'can extend from multiple source objects');
     result = _.extend({x: 'x'}, {a: 'a', x: 2}, {a: 'b'});
-    ok(_.isEqual(result, {x: 2, a: 'b'}), 'extending from multiple source objects last property trumps');
+    deepEqual(result, {x: 2, a: 'b'}, 'extending from multiple source objects last property trumps');
     result = _.extend({}, {a: void 0, b: null});
     deepEqual(_.keys(result), ['a', 'b'], 'extend copies undefined values');
 
diff --git a/vendor/underscore/test/utility.js b/vendor/underscore/test/utility.js
index bfa2a1110..37c90076d 100644
--- a/vendor/underscore/test/utility.js
+++ b/vendor/underscore/test/utility.js
@@ -67,13 +67,13 @@
   test('times', function() {
     var vals = [];
     _.times(3, function (i) { vals.push(i); });
-    ok(_.isEqual(vals, [0, 1, 2]), 'is 0 indexed');
+    deepEqual(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');
+    deepEqual(vals, [0, 1, 2], 'works as a wrapper');
     // collects return values
-    ok(_.isEqual([0, 1, 2], _.times(3, function(i) { return i; })), 'collects return values');
+    deepEqual([0, 1, 2], _.times(3, function(i) { return i; }), 'collects return values');
 
     deepEqual(_.times(0, _.identity), []);
     deepEqual(_.times(-1, _.identity), []);