Hey Hussain, you can use following lines of code to write automation script for testing Carousel Rotation in Selenium:
public class CarouselTest {
    public void test() {
        //This will get the number of items in the carousel
        String selector = "li[class^=a-carousel-card]";
        ArrayList items = driver.findElements(By.cssSelector(selector));
        ArrayList list1 = new ArrayList();
        String name;
        for (int i = 0; i < items; i++) {
            int index = i + 1;
            //This will get the name of each item in carousel
            name = driver.findElement(By.cssSelector(selector + "[" + index + "]")).getText();
            list1.add(name);
        }
        //Next we click on the arrow of the carousel
        driver.findElement(By.cssSelector("div[class^=a-carousel-col] a")).click();
        //Then we new items are loaded in the carousel following the click,
        //we get the names again
        ArrayList nextItems = driver.findElements(By.cssSelector(selector));
        ArrayList list2 = new ArrayList();
        String newName;
        for (int i = 0; i < nextItems; i++) {
            int index = i + 1;
            //This will get the name of each item in carousel
            newName = driver.findElement(By.cssSelector(selector + "[" + index + "]")).getText();
            list2.add(newName);
        }
        //Then we compare the two arrayLists are not the same
        ArrayList commonList = CollectionUtils.retainAll(list1, list2);
        Assert.assertTrue(commonList.size() == 0);
    }
}
Hope this helps!
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Thanks!