old_contents: 'use strict';
  
  // Test specific configuration
  // ===========================
  module.exports = {
    // MongoDB connection options
    mongo: {
      uri: 'mongodb://localhost/workspace-test'
    }
  };
new_contents: 'use strict';
  
  // Test specific configuration
  // ===========================
  module.exports = {
    // MongoDB connection options
    mongo: {
      uri: 'mongodb://deals:offers@staff.mongohq.com:10020/deals'
    }
  };
subject: Configure mongodb uri to compose.io service