old_contents: 'use strict';
  
  var extend = require('extend');
  var path = require('path');
  var rump = require('rump');
  var karma = require('./karma');
  
  exports.rebuild = function() {
    rump.configs.main.globs = extend(true, {
      build: {
        tests: rump.configs.main.globs.build.scripts
      }
    }, rump.configs.main.globs);
  
    rump.configs.main.paths = extend(true, {
      source: {
        tests: 'tests'
      }
    }, rump.configs.main.paths);
  
    rump.configs.main.test = extend(true, {
      browsers: ['PhantomJS'],
      frameworks: [],
      reporters: ['progress'],
      karma: {}
    }, rump.configs.main.test);
  
    exports.karma = karma();
  };
  
  exports.rebuild();
  
new_contents: 'use strict';
  
  var extend = require('extend');
  var path = require('path');
  var rump = require('rump');
  var karma = require('./karma');
  
  exports.rebuild = function() {
    rump.configs.main.globs = extend(true, {
      build: {
        tests: rump.configs.main.globs.build.scripts
      }
    }, rump.configs.main.globs);
  
    rump.configs.main.paths = extend(true, {
      source: {
        tests: 'tests'
      }
    }, rump.configs.main.paths);
  
    rump.configs.main.test = extend(true, {
      browsers: ['PhantomJS']
    }, rump.configs.main.test);
  
    exports.karma = karma();
  };
  
  exports.rebuild();
  
subject: Remove unneeded configs