Test suites are important tools to help ensure the correctness of your application, but the suites need to be architected, designed, and maintained to ensure the test suite itself doesn’t rot and become a burden. This post covers some high level concepts and architecture decisions that keep test suites maintainable.
Learn to use Model-View-Presenter to define and test application behavior independent of the Android framework.
Test-driven development can be a little slow going, jumping between your code and your console, and targeting tests by line is prone to error. Use these tools and techniques to streamline your TDD.