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Discover how to write exceptional unit tests in this 46-minute conference talk by Jeroen Mols at Devoxx. Learn the three criteria for awesome tests, best practices for test writing, and common pitfalls to avoid. Explore what to test, how to optimize tests for failure, and determine the ideal number of tests per method. Gain insights into code coverage, using AssertJ for readable tests, and understanding the benefits of Test-Driven Development (TDD). Elevate your testing skills with deep insights into fundamental testing principles, including how to test everything effectively and why code coverage can be misleading. Benefit from the expertise of Jeroen Mols, an Android GDE and lead Android developer at Philips Hue, as he shares his passion for building innovative apps and contributing to the Android community.