add coverage

.gitignore

@@ -4,3 +4,4 @@ npm-debug.log
 lib/__test__
 $CIRCLE_TEST_REPORTS
 _book
+coverage

karma.conf.js

@@ -3,6 +3,10 @@ var WebpackConfig = require('webpack-config');
 
 // Karma configuration here
 module.exports = function (config) {
+  var needsCoverage = config.reporters.indexOf("coverage") > -1
+  if(needsCoverage && process.env.COVERALLS_REPO_TOKEN) {
+    config.reporters.push("coveralls")
+  }
   config.set({
     port: 3334,
     browsers: ['PhantomJS'],
@@ -15,13 +19,32 @@ module.exports = function (config) {
     preprocessors: {
       'webpack.tests.js': ['webpack', 'sourcemap']
     },
-    reporters: ['progress'], //report results in this format
 
     junitReporter: {
       outputDir: path.join(process.env.CIRCLE_TEST_REPORTS || '$CIRCLE_TEST_REPORTS', "karma", "junit.xml"),
       useBrowserName: false // add browser name to report and classes names
     },
 
-    webpack: new WebpackConfig().extend("webpack.test.config")
-  });
+    coverageReporter: {
+      type: 'lcov', // lcov or lcovonly are required for generating lcov.info files
+      dir: 'coverage/'
+    }
+  })
+
+  var webpack = new WebpackConfig().extend("webpack.test.config")
+  if(needsCoverage){
+    webpack = webpack.merge({
+      module:{
+        postLoaders: [{
+          test: /\.(js|tsx?)/,
+          exclude: /(test|node_modules|bower_components)/,
+          loader: 'istanbul-instrumenter'
+        }]
+      }
+    })
+  }
+  config.set({
+    webpack:webpack
+  })
+
 };

package.json

@@ -24,7 +24,7 @@
   },
   "typings": "lib/src/index.d.ts",
   "scripts": {
-    "test": "./node_modules/.bin/karma start --single-run --reporters junit,dots",
+    "test": "./node_modules/.bin/karma start --single-run --reporters progress,junit,coverage",
     "test:watch": "./node_modules/.bin/karma start karma.conf.js --auto-watch",
     "build": "tsc; gulp copy-assets; webpack;",
     "build:watch": "tsc -w",
@@ -61,10 +61,14 @@
     "file-loader": "^0.8.5",
     "gulp": "^3.9.0",
     "imports-loader": "^0.6.5",
+    "istanbul": "^0.4.2",
+    "istanbul-instrumenter-loader": "^0.1.3",
     "jasmine-ajax": "^3.2.0",
     "jasmine-core": "^2.3.4",
     "json-loader": "^0.5.4",
     "karma": "^0.13.14",
+    "karma-coverage": "^0.5.3",
+    "karma-coveralls": "^1.1.2",
     "karma-jasmine": "^0.3.6",
     "karma-junit-reporter": "^0.3.8",
     "karma-phantomjs-launcher": "^0.2.1",