Can compare booleans

lib/model.js

@@ -132,9 +132,10 @@ function deepCopy (obj) {
 
 /**
  * Utility function for comparing things
+ * Works for numbers, strings and booleans
  * Assumes type checking was already done (a and b already have the same type)
  */
-function compareNumbersAndStrings (a, b) {
+function compareNSB (a, b) {
   if (a < b) { return -1; }
   if (a > b) { return 1; }
   return 0;
@@ -153,12 +154,16 @@ function compareThings (a, b) {
   if (b === null) { return a === null ? 0 : 1; }
 
   // Numbers
-  if (typeof a === 'number') { return typeof b === 'number' ? compareNumbersAndStrings(a, b) : -1; }
-  if (typeof b === 'number') { return typeof a === 'number' ? compareNumbersAndStrings(a, b) : 1; }
+  if (typeof a === 'number') { return typeof b === 'number' ? compareNSB(a, b) : -1; }
+  if (typeof b === 'number') { return typeof a === 'number' ? compareNSB(a, b) : 1; }
 
   // Strings
-  if (typeof a === 'string') { return typeof b === 'string' ? compareNumbersAndStrings(a, b) : -1; }
-  if (typeof b === 'string') { return typeof a === 'string' ? compareNumbersAndStrings(a, b) : 1; }
+  if (typeof a === 'string') { return typeof b === 'string' ? compareNSB(a, b) : -1; }
+  if (typeof b === 'string') { return typeof a === 'string' ? compareNSB(a, b) : 1; }
+
+  // Booleans
+  if (typeof a === 'boolean') { return typeof b === 'boolean' ? compareNSB(a, b) : -1; }
+  if (typeof b === 'boolean') { return typeof a === 'boolean' ? compareNSB(a, b) : 1; }
 }
 
 

test/model.test.js

@@ -379,6 +379,24 @@ describe('Model', function () {
       });
     });
 
+    it('Then booleans', function () {
+      var otherStuff = [new Date(4321), {}, { hello: 'world' }, [], ['quite', 5]]
+        , bools = [true, false];
+
+      model.compareThings(true, true).should.equal(0);
+      model.compareThings(false, false).should.equal(0);
+      model.compareThings(true, false).should.equal(1);
+      model.compareThings(false, true).should.equal(-1);
+
+      otherStuff.forEach(function (stuff) {
+        bools.forEach(function (bool) {
+          model.compareThings(bool, stuff).should.equal(-1);
+          model.compareThings(stuff, bool).should.equal(1);
+        });
+      });
+    });
+
+
   });   // ==== End of 'Comparing things' ==== //