try to run test with individual files instead of the concated version so it is easier to track down the source file

.travis.yml

@@ -0,0 +1,9 @@
+language: node_js
+node_js:
+    - "node"
+script: node_modules/karma/bin/karma start karma.conf.js --single-run
+before_install:
+    - export DISPLAY=:99.0
+    - sh -e /etc/init.d/xvfb start
+before_script:
+    - npm install

dist/svg.js

@@ -6,7 +6,7 @@
 * @copyright Wout Fierens <wout@woutfierens.com>
 * @license MIT
 *
-* BUILT: Tue Oct 04 2016 13:44:15 GMT+0200 (CEST)
+* BUILT: Tue Oct 04 2016 14:44:34 GMT+0200 (CEST)
 */
 (function(root, factory) {
   if (typeof define === 'function' && define.amd) {

gulpfile.js

@@ -28,60 +28,8 @@ var headerLong = ['/*!'
 var headerShort = '/*! <%= pkg.name %> v<%= pkg.version %> <%= pkg.license %>*/'
 
 // all files in the right order (currently we don't use any dependency management system)
-var parts = [
-  'src/svg.js'
-, 'src/regex.js'
-, 'src/utilities.js'
-, 'src/default.js'
-, 'src/color.js'
-, 'src/array.js'
-, 'src/pointarray.js'
-, 'src/patharray.js'
-, 'src/number.js'
-, 'src/element.js'
-, 'src/fx.js'
-, 'src/boxes.js'
-, 'src/matrix.js'
-, 'src/point.js'
-, 'src/attr.js'
-, 'src/transform.js'
-, 'src/style.js'
-, 'src/parent.js'
-, 'src/ungroup.js'
-, 'src/container.js'
-, 'src/viewbox.js'
-, 'src/event.js'
-, 'src/defs.js'
-, 'src/group.js'
-, 'src/arrange.js'
-, 'src/mask.js'
-, 'src/clip.js'
-, 'src/gradient.js'
-, 'src/pattern.js'
-, 'src/doc.js'
-, 'src/shape.js'
-, 'src/bare.js'
-, 'src/use.js'
-, 'src/rect.js'
-, 'src/ellipse.js'
-, 'src/line.js'
-, 'src/poly.js'
-, 'src/pointed.js'
-, 'src/path.js'
-, 'src/image.js'
-, 'src/text.js'
-, 'src/textpath.js'
-, 'src/nested.js'
-, 'src/hyperlink.js'
-, 'src/marker.js'
-, 'src/sugar.js'
-, 'src/set.js'
-, 'src/data.js'
-, 'src/memory.js'
-, 'src/selector.js'
-, 'src/helpers.js'
-, 'src/polyfill.js'
-]
+// see package.json `files` section
+var parts = pkg.files
 
 gulp.task('clean', function() {
   return del([ 'dist/*' ])

karma.conf.js

@@ -0,0 +1,71 @@
+// Karma configuration
+// Generated on Tue Oct 04 2016 13:53:46 GMT+0200 (CEST)
+
+var pkg = require('./package.json')
+
+module.exports = function(config) {
+  config.set({
+
+    // base path that will be used to resolve all patterns (eg. files, exclude)
+    basePath: '',
+
+
+    // frameworks to use
+    // available frameworks: https://npmjs.org/browse/keyword/karma-adapter
+    frameworks: ['jasmine'],
+
+
+    // list of files / patterns to load in the browser
+    files: pkg.files.concat([
+      'spec/**/*.js'
+    ]),
+
+
+    // list of files to exclude
+    exclude: [
+    ],
+
+
+    // preprocess matching files before serving them to the browser
+    // available preprocessors: https://npmjs.org/browse/keyword/karma-preprocessor
+    preprocessors: {
+    },
+
+
+    // test results reporter to use
+    // possible values: 'dots', 'progress'
+    // available reporters: https://npmjs.org/browse/keyword/karma-reporter
+    reporters: ['progress'],
+
+
+    // web server port
+    port: 9876,
+
+
+    // enable / disable colors in the output (reporters and logs)
+    colors: true,
+
+
+    // level of logging
+    // possible values: config.LOG_DISABLE || config.LOG_ERROR || config.LOG_WARN || config.LOG_INFO || config.LOG_DEBUG
+    logLevel: config.LOG_INFO,
+
+
+    // enable / disable watching file and executing tests whenever any file changes
+    autoWatch: false,
+
+
+    // start these browsers
+    // available browser launchers: https://npmjs.org/browse/keyword/karma-launcher
+    browsers: ['Firefox'],
+
+
+    // Continuous Integration mode
+    // if true, Karma captures browsers, runs the tests and exits
+    singleRun: false,
+
+    // Concurrency level
+    // how many browser should be started simultaneous
+    concurrency: Infinity
+  })
+}

package.json

@@ -12,6 +12,60 @@
   ],
   "author": "Wout Fierens <wout@woutfierens.com>",
   "main": "dist/svg.js",
+  "files": [
+      "src/svg.js"
+    , "src/regex.js"
+    , "src/utilities.js"
+    , "src/default.js"
+    , "src/color.js"
+    , "src/array.js"
+    , "src/pointarray.js"
+    , "src/patharray.js"
+    , "src/number.js"
+    , "src/element.js"
+    , "src/fx.js"
+    , "src/boxes.js"
+    , "src/matrix.js"
+    , "src/point.js"
+    , "src/attr.js"
+    , "src/transform.js"
+    , "src/style.js"
+    , "src/parent.js"
+    , "src/ungroup.js"
+    , "src/container.js"
+    , "src/viewbox.js"
+    , "src/event.js"
+    , "src/defs.js"
+    , "src/group.js"
+    , "src/arrange.js"
+    , "src/mask.js"
+    , "src/clip.js"
+    , "src/gradient.js"
+    , "src/pattern.js"
+    , "src/doc.js"
+    , "src/shape.js"
+    , "src/bare.js"
+    , "src/use.js"
+    , "src/rect.js"
+    , "src/ellipse.js"
+    , "src/line.js"
+    , "src/poly.js"
+    , "src/pointed.js"
+    , "src/path.js"
+    , "src/image.js"
+    , "src/text.js"
+    , "src/textpath.js"
+    , "src/nested.js"
+    , "src/hyperlink.js"
+    , "src/marker.js"
+    , "src/sugar.js"
+    , "src/set.js"
+    , "src/data.js"
+    , "src/memory.js"
+    , "src/selector.js"
+    , "src/helpers.js"
+    , "src/polyfill.js"
+  ],
   "jam": {
     "include": [
       "dist/svg.js",
@@ -49,7 +103,8 @@
   "license": "MIT",
   "typings": "./svg.js.d.ts",
   "scripts": {
-    "build": "gulp"
+    "build": "gulp",
+    "test": "karma start karma.conf.js --single-run"
   },
   "devDependencies": {
     "del": "^2.2.0",