package utils;
import static org.junit.Assert.*;
import java.math.BigInteger;
import java.util.Arrays;
import java.util.List;
import org.junit.Test;
public class PermutationGeneratorTest {
@Test
public void testPerm() {
List<String> ss = Arrays.asList("1", "2", "3", "4", "5", "6");
PermutationGenerator<String> pg = new PermutationGenerator(ss);
int l = 0;
while (pg.hasNext()) {
List<String> next = pg.next();
l++;
System.out.println(next.toString());
}
System.out.println("total lines: " + l);
}
@Test
public void testComboCount() {
BigInteger combinationsCount = PermutationGenerator.getCombinationsCount(5, 3);
assertEquals(10, combinationsCount.intValue());
combinationsCount = PermutationGenerator.getCombinationsCount(7, 5);
assertEquals(21, combinationsCount.intValue());
}
}