import org.example.PrimeFactorsCalculator;
import org.junit.jupiter.api.Test;
import java.util.List;
import static java.util.Collections.EMPTY_LIST;
import static org.junit.jupiter.api.Assertions.assertIterableEquals;

public class PrimeFactorsCalculatorTest {
    private PrimeFactorsCalculator calculator = new PrimeFactorsCalculator();

    @Test
    void testGetFactorsValue1(){
        List<Integer> factors = calculator.getFactors(1);
        test(EMPTY_LIST,1);
    }

    @Test
    void testGetFactorsValues2() {
        test(List.of(2, 2), 4);
        test(List.of(2), 2);
        test(List.of(3), 3);
        test(List.of(2, 2), 4);
        test(List.of(5), 5);
        test(List.of(2, 3), 6);
        test(List.of(7), 7);
        test(List.of(2, 2, 2), 8);
        test(List.of(3, 3), 9);
        test(List.of(2, 5), 10);
    }

    private void test(List<Integer> l, int n) {
        List<Integer> factors = calculator.getFactors(n);
        assertIterableEquals(l, factors);
    }
}