Use Shift+Cmd+T (or Alt+Cmd+T for current daily builds) to switch between the production class and the related unit test.
If it doesn't work, you probably forgot to write a test (it happens sometimes :-))
Web Apps, SPA, PWA with vanilla Java Script (ES 6+), CSS 3 and WebStandards only. As simple as possible, but not simpler. See you at: (Progressive) Web apps, Single Page Apps and WebStandards airhacks workshops at MUC airport, Winter Edition
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