Java/src/test/java/com/thealgorithms/bitmanipulation/CountSetBitsTest.java

package com.thealgorithms.bitmanipulation;

import static org.junit.jupiter.api.Assertions.assertEquals;

import org.junit.jupiter.api.Test;

public class CountSetBitsTest {

    @Test
    void testSetBits() {
        CountSetBits csb = new CountSetBits();
        assertEquals(1L, csb.countSetBits(16));
        assertEquals(4, csb.countSetBits(15));
        assertEquals(5, csb.countSetBits(10000));
        assertEquals(5, csb.countSetBits(31));
    }

    @Test
    void testSetBitsLookupApproach() {
        CountSetBits csb = new CountSetBits();
        assertEquals(1L, csb.lookupApproach(16));
        assertEquals(4, csb.lookupApproach(15));
        assertEquals(5, csb.lookupApproach(10000));
        assertEquals(5, csb.lookupApproach(31));
    }
}