Writing tests is important, but with so many kinds of tests available like unit tests, integration tests, end to end tests, which ones to focus our bandwidth upon to yield maximum confidence on the apps. We will brainstorm various possibilities, their pros and cons and a few custom solutions to it. We will also deep dive in a custom solution - integration style unit tests and how we used it to attain max confidence and catch bugs early in the development cycle. We will understand how it can be used to test all CSR and SSR scenarios as well and where it fits with other test cases.