Add JavaScript mraaStub project

Signed-off-by: David Antler <david.a.antler@intel.com>
Signed-off-by: Brendan Le Foll <brendan.le.foll@intel.com>

jsstub/test/index.js

@@ -0,0 +1,32 @@
+var expect = require('expect.js');
+var m = require('../index');
+var LightBulb = require('./lightbulb');
+
+describe('LightBulb', function() {
+
+    /** Model the internal data of LightBulb as a buffer */
+    var bufferFullBrightness = new Buffer(
+       [ 'N',   // Four bytes allocated for name
+         'a',
+         'm',
+         'e',
+          95    // One byte allocated for brightness. Stuff in '95' value!
+       ]);
+
+    it('getBrightness() function should return 95', function() {
+
+        // Create a fake I2c bus based on the 'full brightness' data model
+        var testI2cBus = new m.I2c(0);
+        testI2cBus._setRegisterMapInternal(bufferFullBrightness);
+
+        // Create a new LightBulb that opens the testI2cBus, instead of a real
+        // mraa I2c bus.
+        var lightBulbI2c = new LightBulb(testI2cBus);
+
+        // presumably getBrightness will gather data from I2C and get '95'
+        var brightness = lightBulbI2c.getBrightness();
+
+        expect(brightness).to.be(95);
+    })
+});
+