Environment recommendations:

• Project was run on Android Studio Dolphin | 2021.3.1
• Installed Java 11

Task:

Unit tests

1. Write tests for SearchCountryUseCase class. Make sure that all cases are covered. Recommended to use Parametrized test.
2. Write tests for CountriesViewModel. Highly recommend to cover search functionality.

Ui tests

3. Write tests for CountryDetailsFragment.
4. Write tests for CountryFragment.

Recommendation:

• use Roboelectric to run ui tests on JVM Environment.
• use Espresso to verify views.
• cover androidx navigation calls.

Test coverage:

To verify test coverage run next commands:

• for domain module: ./gradlew :domain:koverHtmlReport. Report will be generated in */domain/build/reports/html-result/index.html
• for presentation module: ./gradlew :presentation:koverHtmlReportDebug. Report will be generated in */presentation/build/reports/kover/htmlDebug/index.html

Good result is > 80% coverage.