Added Istanbul integration

This commits introduces integration with Istanbul which allows
to track code coverage.

Change-Id: Ia106b256308a8d0f7c286134f997c7efd4bcf624
Co-Authored-By: Michael Krotscheck <krotscheck@gmail.com>

.istanbul.yml

@@ -0,0 +1,30 @@
+verbose: false
+instrumentation:
+    root: .
+    includes:
+    - 'src/**'
+    default-excludes: true
+reporting:
+    print: detail
+    reports:
+        - lcov
+        - html
+    dir: ./cover/node
+    watermarks:
+        statements: [50, 90]
+        lines: [50, 90]
+        functions: [50, 90]
+        branches: [50, 90]
+check:
+    global:
+        statements: 50
+        lines: 50
+        branches: 50
+        functions: 0
+        excludes: []
+    each:
+        statements: 50
+        lines: 50
+        branches: 50
+        functions: 0
+        excludes: []

karma.conf.babel.js

@@ -27,7 +27,7 @@ export default (config) => {
     // test results reporter to use
     // possible values: 'dots', 'progress'
     // available reporters: https://npmjs.org/browse/keyword/karma-reporter
-    reporters: ['progress'],
+    reporters: ['progress', 'coverage', 'threshold'],
 
     // web server port
     port: 9876,
@@ -59,6 +59,20 @@ export default (config) => {
     webpackMiddleware: {
       // Don't spam the console.
       noInfo: true
+    },
+
+    // Generate a coverage report in /cover/karma
+    coverageReporter: {
+      type: 'html', //produces a html document after code is run
+      dir: 'cover/browser/' //path to created html doc
+    },
+
+    // The current coverage threshold values. These should never drop.
+    thresholdReporter: {
+      statements: 88,
+      branches: 64,
+      functions: 77,
+      lines: 75
     }
 
   });

package.json

@@ -5,8 +5,9 @@
   "main": "dist/index.js",
   "scripts": {
     "test": "npm run test:node; npm run test:browser",
-    "test:node": "jasmine JASMINE_CONFIG_PATH=test/unit/jasmine.json",
+    "test:node": "istanbul cover jasmine JASMINE_CONFIG_PATH=test/unit/jasmine.json",
     "test:browser": "karma start",
+    "posttest:node": "istanbul check-coverage",
     "lint": "eslint ./",
     "prepublish": "nsp check; npm run build",
     "build": "babel src -d dist && webpack",
@@ -34,11 +35,14 @@
     "babel-register": "^6.9.0",
     "eslint": "^2.4.0",
     "eslint-config-openstack": "2.0.0",
+    "istanbul": "^1.0.0-alpha.2",
     "jasmine": "^2.4.1",
     "karma": "^1.1.1",
     "karma-chrome-launcher": "^1.0.1",
+    "karma-coverage": "^1.1.0",
     "karma-firefox-launcher": "^1.0.0",
     "karma-jasmine": "^1.0.2",
+    "karma-threshold-reporter": "^0.1.15",
     "karma-webpack": "^1.7.0",
     "nsp": "^2.4.0",
     "webpack": "^1.13.1"