removed node 0.8 from travis, bumped version and additional methids

.travis.yml

@@ -1,7 +1,8 @@
 language: "node_js"
 node_js:
+  - "0.12"
+  - "0.11"
   - "0.10"
-  - "0.8"
 
 before_install:
  - "npm install istanbul -g"

bower.json

@@ -1,7 +1,7 @@
 {
     "name": "js-money",
     "description": "JavaScript implementation of the Money value object.",
-    "version": "0.1.0",    
+    "version": "0.2.0",
     "main": "./lib",
     "author": {
         "name": "David Kalosi",
@@ -25,4 +25,4 @@
         "mocha": "1.x.x",
         "chai": "1.x.x"
     }
-}
+}

lib/money.js

@@ -180,5 +180,32 @@ Money.prototype.compare = function(other) {
     return self.amount > other.amount ? 1 : -1;
 };
 
+/**
+ * Returns true if the amount is zero.
+ *
+ * @returns {boolean}
+ */
+Money.prototype.isZero = function() {
+    return this.amount === 0;
+};
+
+/**
+ * Returns true if the amount is positive.
+ *
+ * @returns {boolean}
+ */
+Money.prototype.isPositive = function() {
+    return this.amount > 0;
+};
+
+/**
+ * Returns true if the amount is negative.
+ *
+ * @returns {boolean}
+ */
+Money.prototype.isNegative = function() {
+    return this.amount < 0;
+};
+
 module.exports = Money;
 module.exports = _.extend(module.exports, currencies);

package.json

@@ -1,7 +1,7 @@
 {
     "name": "js-money",
     "description": "JavaScript implementation of the Money value object.",
-    "version": "0.1.0",    
+    "version": "0.2.0",    
     "main": "./lib",
     "author": {
         "name": "David Kalosi",

test/money.test.js

@@ -130,6 +130,29 @@ describe('Money', function () {
        expect(results[2].amount).to.equal(333);    
        expect(results[2].currency).to.equal('EUR');             
     });
-
+
+    it('zero check works correctly', function() {
+        var subject = new Money(1000, 'EUR');
+        var subject1 = new Money(0, 'EUR');
+
+        expect(subject.isZero()).to.be.false;
+        expect(subject1.isZero()).to.be.true;
+    });
+
+    it('positive check works correctly', function() {
+        var subject = new Money(1000, 'EUR');
+        var subject1 = new Money(-1000, 'EUR');
+
+        expect(subject.isPositive()).to.be.true;
+        expect(subject1.isPositive()).to.be.false;
+    });
+
+    it('negative check works correctly', function() {
+        var subject = new Money(1000, 'EUR');
+        var subject1 = new Money(-1000, 'EUR');
+
+        expect(subject.isNegative()).to.be.false;
+        expect(subject1.isNegative()).to.be.true;
+    });
 
 });