To learn about common unit testing strategies in Android, read What toīy default, the source files for local unit tests are placed in This is especially problematic if your code depends on Under tests must be replaced by components that you control, such as fakes or In order to run unit tests in isolation, the dependencies of the unit.ForĮxample, you can't test a private method directly. The code that you want to verify needs to be accessible from a test.Under test is not designed with testability in mind: Unit tests are usually simple but their setup can be problematic when the unit It does so by executing that code and checking the result. However, not being able to interact with theĪndroid framework creates a limitation in the types of tests you can run.Ī unit test verifies the behavior of a small section of code, the unit under Rather than an Android device to run tests. As such, it uses your local Java Virtual Machine (JVM),

A local test runs directly on your own workstation, rather than an Androidĭevice or emulator.

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