JUnit + Mockito for Java Android

Instructions

Write unit tests as the first consumer of your architecture. If testing is painful, the architecture is wrong — fix the design before papering over it with fakes.

1. Dependencies

dependencies {
    testImplementation 'junit:junit:4.13.2'
    testImplementation 'org.mockito:mockito-core:5.12.0'
    testImplementation 'org.mockito:mockito-inline:5.2.0'   // final classes, static methods
    testImplementation 'androidx.arch.core:core-testing:2.2.0'  // InstantTaskExecutorRule
    testImplementation 'org.junit.jupiter:junit-jupiter:5.10.2' // optional, pure Java modules
    testImplementation 'com.google.truth:truth:1.4.4'       // readable assertions
}