Can compare all things

lib/model.js

@@ -163,6 +163,8 @@ function compareArrays (a, b) {
  * Return -1 if a < b, 1 if a > b and 0 if a = b (note that equality here is NOT the same as defined in areThingsEqual!)
  */
 function compareThings (a, b) {
+  var aKeys, bKeys, comp, i;
+
   // null is less than everything except null
   if (a === null) { return b === null ? 0 : -1; }
   if (b === null) { return a === null ? 0 : 1; }
@@ -186,6 +188,18 @@ function compareThings (a, b) {
   // Arrays (first element is most significant and so on)
   if (util.isArray(a)) { return util.isArray(b) ? compareArrays(a, b) : -1; }
   if (util.isArray(b)) { return util.isArray(a) ? compareArrays(a, b) : 1; }
+
+  // Objects
+  aKeys = Object.keys(a).sort();
+  bKeys = Object.keys(b).sort();
+
+  for (i = 0; i < Math.min(aKeys.length, bKeys.length); i += 1) {
+    comp = compareThings(a[aKeys[i]], b[bKeys[i]]);
+
+    if (comp !== 0) { return comp; }
+  }
+
+  return compareNSB(aKeys.length, bKeys.length);
 }
 
 

test/model.test.js

@@ -329,7 +329,7 @@ describe('Model', function () {
   });   // ==== End of 'Modifying documents' ==== //
 
 
-  describe.only('Comparing things', function () {
+  describe('Comparing things', function () {
 
     it('null is less than everything except null', function () {
       var otherStuff = ["string", "", -1, 0, 5.3, 12, true, false, new Date(12345), {}, { hello: 'world' }, [], ['quite', 5]];
@@ -436,6 +436,14 @@ describe('Model', function () {
       });
     });
 
+    it('And finally objects', function () {
+      model.compareThings({}, {}).should.equal(0);
+      model.compareThings({ a: 42 }, { a: 312}).should.equal(-1);
+      model.compareThings({ a: '42' }, { a: '312'}).should.equal(1);
+      model.compareThings({ a: 42, b: 312 }, { b: 312, a: 42 }).should.equal(0);
+      model.compareThings({ a: 42, b: 312, c: 54 }, { b: 313, a: 42 }).should.equal(-1);
+    });
+
   });   // ==== End of 'Comparing things' ==== //