Generated unit tests by Diffblue Cover plugin

UtilityTest.java

package com.diffblue.demo;

import static org.junit.jupiter.api.Assertions.assertEquals;
import static org.junit.jupiter.api.Assertions.assertFalse;
import static org.junit.jupiter.api.Assertions.assertThrows;
import static org.junit.jupiter.api.Assertions.assertTrue;

import org.junit.jupiter.api.Test;

public class UtilityTest {
    @Test
    public void testSum() {
        assertEquals(2, Utility.sum(1, 1));
    }

    @Test
    public void testDivide() {
        assertEquals(1.0, Utility.divide(1, 1));
        assertThrows(RuntimeException.class, () -> Utility.divide(1, 0));
    }

    @Test
    public void testIsColorSupported() {
        assertTrue(Utility.isColorSupported(Utility.Color.RED));
    }

    @Test
    public void testCalculateFactorial() {
        assertEquals(3628800L, Utility.calculateFactorial(10));
    }

    @Test
    public void testIsPrime() {
        assertFalse(Utility.isPrime(1, 1));
        assertTrue(Utility.isPrime(2, 1));
    }

    @Test
    public void testIsEven() {
        assertFalse(Utility.isEven(1));
        assertTrue(Utility.isEven(0));
    }
}