Sencha Test is the most comprehensive unit and end-to-end functional testing solution for Ext JS apps. Based on years of testing Ext JS applications, Sencha Test helps you create unit and end-to-end functional tests quickly, and execute them on multiple browsers simultaneously. Cross-browser testing is critical to ensuring quality for organizations, and test automation is a requirement to meet delivery timelines. Sencha Test is the only dedicated testing solution for Ext JS applications. It helps you build an end-to-end testing plan without having to cobble together testing tools.