Setup UI testing (#720)

* default sequencer ui test

* default step ui test suite

* intermediate step ui test

* preview ui test suite

* url methods test suite

* add set url params method test suite

* argument call tests

* test directory refactor

* travis fix

spec/urlHash.spec.js

@@ -0,0 +1,40 @@
+describe('URL manipulation methods', function() {
+
+  var UrlHash = require('../examples/lib/urlHash')
+  var urlHash;
+  var params = {
+    module: 'brightness',
+    brightness: 50
+  }
+
+  beforeEach(()=>{
+    urlHash = UrlHash
+
+    spyOn(urlHash,'getUrlHashParameters')
+    spyOn(urlHash,'getUrlHashParameter')
+    spyOn(urlHash,'setUrlHashParameters')
+    spyOn(urlHash,'setUrlHashParameter')
+
+    urlHash.getUrlHashParameters()
+    urlHash.getUrlHashParameter('module')
+    urlHash.setUrlHashParameters(params)
+    urlHash.setUrlHashParameter('module','brightness')
+  })
+
+  it('gets url hash params from window hash', function() {
+    expect(urlHash.getUrlHashParameters).toHaveBeenCalled()
+  })
+
+  it('gets url hash param from params object', function() {
+    expect(urlHash.getUrlHashParameter).toHaveBeenCalledWith('module')
+  })
+
+  it('accepts param object and sets url hash params', function() {
+    expect(urlHash.setUrlHashParameters).toHaveBeenCalledWith(params)
+  })
+
+  it('accepts param key-value pair and sets url hash params', function() {
+    expect(urlHash.setUrlHashParameter).toHaveBeenCalledWith('module','brightness')
+  })
+
+})