add unit test framework

.gitignore

@@ -1 +1,2 @@
 *.log
+node_modules

Makefile

@@ -1,2 +1,7 @@
-test:
+.PHONY: all test clean
+all:
 
+test:
+	mocha test/tests.js -R spec
+
+clean:

test/tests.js

@@ -0,0 +1,13 @@
+require('chai').should();
+var random = require('../src/random');
+
+describe('Random', function () {
+    describe('generate', function () {
+        it ('should generate random number with Arcsine', function () {
+            random.arcsine(0, 1).should.be.a('number');
+        });
+        it ('should generate random number with Beta', function () {
+            random.arcsine(0.5, 5, 0, 3).should.be.a('number');
+        });
+    });
+});