diff --git a/lib/util.js b/lib/util.js
index 04d56822..41549de0 100644
--- a/lib/util.js
+++ b/lib/util.js
@@ -1237,7 +1237,7 @@ exports.insertSort = function (a,compare) {
     a[j] = k;
   }
   return a;
-}
+};
 
 
 /**
diff --git a/test/util.test.js b/test/util.test.js
index ce8336ce..84c163db 100644
--- a/test/util.test.js
+++ b/test/util.test.js
@@ -676,4 +676,169 @@ describe('mergeOptions', function () {
       assert.equal(util.getType(), 'undefined');
     });
   });
+
+  describe('easingFunctions', function () {
+    it('take a number and output a number', function () {
+      for (var key in util.easingFunctions) {
+        if (util.easingFunctions.hasOwnProperty(key)) {
+          assert.equal(typeof util.easingFunctions[key](1), 'number');
+          assert.equal(typeof util.easingFunctions[key](0.2), 'number');
+        }
+      }
+    });
+  });
+
+  describe('getScrollBarWidth', function () {
+    beforeEach(function() {
+      this.jsdom_global = jsdom_global();
+    });
+    afterEach(function() {
+      this.jsdom_global();
+    });
+    it('returns 0 when there is no content', function () {
+      assert.equal(util.getScrollBarWidth(), 0);
+    });
+  });
+
+  describe('equalArray', function () {
+    it('arrays of different lengths are not equal', function () {
+      assert.equal(util.equalArray([1, 2, 3], [1, 2]), false)
+    });
+    it('arrays with different content are not equal', function () {
+      assert.equal(util.equalArray([1, 2, 3], [3, 2, 1]), false)
+    });
+    it('same content arrays are equal', function () {
+      assert(util.equalArray([1, 2, 3], [1, 2, 3]))
+    });
+    it('empty arrays are equal', function () {
+      assert(util.equalArray([], []))
+    });
+    it('the same array is equal', function () {
+      var arr = [1, 2, 3];
+      assert(util.equalArray(arr, arr))
+    });
+  });
+
+  describe('asBoolean', function () {
+    it('resolves value from a function', function () {
+      assert(util.option.asBoolean(function () {return true}, false));
+    });
+    it('returns default value for null', function () {
+      assert(util.option.asBoolean(null, true));
+    });
+    it('returns true for other types', function () {
+      assert(util.option.asBoolean('should be true', false));
+    });
+    it('returns null for undefined', function () {
+      assert.equal(util.option.asBoolean(), null);
+    });
+  });
+
+  describe('asNumber', function () {
+    it('resolves value from a function', function () {
+      assert.equal(util.option.asNumber(function () {return 777}, 13), 777);
+    });
+    it('returns default value for null', function () {
+      assert.equal(util.option.asNumber(null, 13), 13);
+    });
+    it('returns number for other types', function () {
+      assert.equal(util.option.asNumber('777', 13), 777);
+    });
+    it('returns default for NaN', function () {
+      assert.equal(util.option.asNumber(NaN, 13), 13);
+    });
+    it('returns null for undefined', function () {
+      assert.equal(util.option.asNumber(), null);
+    });
+  });
+
+  describe('asString', function () {
+    it('resolves value from a function', function () {
+      assert.equal(util.option.asString(function () {return 'entered'}, 'default'), 'entered');
+    });
+    it('returns default value for null', function () {
+      assert.equal(util.option.asString(null, 'default'), 'default');
+    });
+    it('returns string for other types', function () {
+      assert.equal(util.option.asString(777, 'default'), '777');
+    });
+    it('returns default for undefined', function () {
+      assert.equal(util.option.asString(undefined, 'default'), 'default');
+    });
+    it('returns null for undefined', function () {
+      assert.equal(util.option.asString(), null);
+    });
+  });
+
+  describe('asSize', function () {
+    it('resolves value from a function', function () {
+      assert.equal(util.option.asSize(function () {return '100px'}, '50px'), '100px');
+    });
+    it('returns default value for null', function () {
+      assert.equal(util.option.asSize(null, '50px'), '50px');
+    });
+    it('returns string with px for other number', function () {
+      assert.equal(util.option.asSize(100, '50px'), '100px');
+    });
+    it('returns default for undefined', function () {
+      assert.equal(util.option.asSize(undefined, '50px'), '50px');
+    });
+    it('returns null for undefined', function () {
+      assert.equal(util.option.asSize(), null);
+    });
+  });
+
+  describe('asElement', function () {
+    before(function() {
+      this.jsdom_global = jsdom_global();
+      this.value  = document.createElement("div");
+      this.defaultValue  = document.createElement("div");
+    });
+    it('resolves value from a function', function () {
+      var me = this;
+      assert.equal(util.option.asElement(function () {return me.value}, this.defaultValue), this.value);
+    });
+    it('returns Element', function () {
+      assert.equal(util.option.asElement(this.value, this.defaultValue), this.value);
+    });
+    it('returns default value for null', function () {
+      assert.equal(util.option.asElement(null, this.defaultValue), this.defaultValue);
+    });
+    it('returns null for undefined', function () {
+      assert.equal(util.option.asElement(), null);
+    });
+  });
+
+  describe('binarySearchValue', function () {
+    it('Finds center target on odd sized array', function () {
+      assert.equal(
+        util.binarySearchValue(
+          [{id: 'a', val: 0}, {id: 'b', val: 1}, {id: 'c', val: 2}],
+          1,
+          'val'
+        ),
+        1
+      );
+    });
+    it('Finds target on odd sized array', function () {
+      assert.equal(
+        util.binarySearchValue(
+          [{id: 'a', val: 0}, {id: 'b', val: 1}, {id: 'c', val: 2}],
+          2,
+          'val'
+        ),
+        2
+      );
+    });
+    it('Cannot find target', function () {
+      assert.equal(
+        util.binarySearchValue(
+          [{id: 'a', val: 0}, {id: 'b', val: 1}, {id: 'c', val: 2}],
+          7,
+          'val'
+        ),
+        -1
+      );
+    });
+  });
 });