Flake it till you make it - how to handle flaky tests

There is a ton of great research to be found on Prof. Kapfhammer's website, including: 

• Flaky Tests: Finding and fixing unpredictable and harmful test cases
• Database Testing: Automatically testing relational database schemas
• Web Testing: Detecting and repairing poor responsive web page layout

We've written a bit about how Stack Overflow is upping its unit testing game and how you can evaluate multiple assertions in a single test.

Thanks to our lifeboat badge winner of the week, Survivor, for answering the question: Is it possible to find out if a value exists twice in an arraylist?