What is your experience with testing software products?

Experience with testing software products includes several key aspects:

• Unit testing — writing tests for individual components or functions using frameworks such as JUnit or AndroidJUnitRunner for Android.

• Instrumented testing — tests that run on a real device or emulator, checking interaction with UI and system components.

• UI testing — automating the verification of the user interface using Espresso or UI Automator.

• Using CI/CD — integrating tests into continuous integration processes for automatic execution on each commit.

• Test coverage — analyzing code coverage by tests to assess quality.

Example of a simple unit test in Kotlin using JUnit:

import org.junit.Assert.*
import org.junit.Test

class CalculatorTest {
    @Test
    fun addition_isCorrect() {
        assertEquals(4, 2 + 2)
    }
}

This approach helps identify errors early in development and maintain application quality.