fix(karma): ensure job number reflects CI environment

Fixes #111

karma.conf.js

@@ -1,34 +1,38 @@
 const packageJson = require('./package.json');
+/* eslint-disable no-process-env */
+let job = process.env.JOB_NUMBER || Date.now();
 let browsers = [ 'ChromeHeadless' ];
 let build = 'localbuild';
 let branch = 'local';
-let job = Date.now();
 let startConnect = false;
 const reporters = [ 'progress', 'coverage' ];
 const tags = [ `${ packageJson.name }@${ packageJson.version }` ];
 const frameworks = [ 'mocha' ];
 
-/* eslint-disable no-process-env */
 const debug = Boolean(process.env.npm_config_debug);
 if (process.env.SAUCE_ACCESS_KEY && process.env.SAUCE_USERNAME) {
   browsers = [ 'SauceEdgeLatest', 'SauceInternetExplorerTen', 'SauceSafariLatest' ];
   tags.push(`${ process.env.SAUCE_USERNAME }@${ branch }`);
   reporters.push('saucelabs');
+  startConnect = true;
 } else if (process.env.APPVEYOR) {
   browsers = [ 'Firefox', 'ChromeHeadless', 'IE' ];
-  branch = process.env.APPVEYOR_REPO_BRANCH;
-  job = process.env.APPVEYOR_JOB_NUMBER;
-  build = `appveyor@${ process.env.APPVEYOR_JOB_NUMBER }`;
 } else if (process.env.TRAVIS) {
   browsers = [ 'FirefoxHeadless', 'ChromeHeadless' ];
-  branch = process.env.TRAVIS_BRANCH;
-  job = process.env.TRAVIS_JOB_NUMBER;
-  build = `travis@${ process.env.TRAVIS_JOB_NUMBER }`;
-  startConnect = true;
 } else if (!process.env.KARMA_MANUAL) {
   browsers = [];
   frameworks.push('detectBrowsers');
 }
+
+if (process.env.APPVEYOR) {
+  branch = process.env.APPVEYOR_REPO_BRANCH;
+  build = `appveyor@${ process.env.APPVEYOR_JOB_NUMBER }`;
+  job = process.env.APPVEYOR_JOB_NUMBER;
+} else if (process.env.TRAVIS) {
+  branch = process.env.TRAVIS_BRANCH;
+  build = `travis@${ process.env.TRAVIS_JOB_NUMBER }`;
+  job = process.env.TRAVIS_JOB_NUMBER;
+}
 /* eslint-enable */
 
 tags.push(build);