API testing

import com.shaft.driver.SHAFT;
import org.testng.annotations.Test;

public class CountryApiTest {
    @Test
    public void getCountryByCapital() {
        new SHAFT.API("https://restcountries.com/v3.1/")
                .get("capital/Cairo")
                .perform()
                .assertThatResponse()
                .extractedJsonValue("[0].name.common")
                .isEqualTo("Egypt")
                .perform();
    }
}

Continue with request building, authentication, and response assertions.