Code below gets all charts with not 0 height, chart clicks count for each, summarizes all and compares with clicks amount in the top right corner.
WebDriverWait wait = new WebDriverWait(driver, 20);
Actions actions = new Actions(driver);
int clicks = Integer.valueOf(wait.until(ExpectedConditions.visibilityOfElementLocated(By.className("info-wrapper--clicks-text"))).getText());
List<WebElement> charts = wait.until(ExpectedConditions.visibilityOfAllElementsLocatedBy(By.cssSelector(".highcharts-series-group rect:not([height='0'])")));
AtomicInteger totalChartClicks = new AtomicInteger();
charts.forEach(webElement -> {
actions.moveToElement(webElement).perform();
int amount = Integer.valueOf(driver.findElement(By.cssSelector("div.highcharts-tooltip span:nth-of-type(2)")).getText().replace("Total Clicks ",""));
totalChartClicks.addAndGet(amount);
});
Assert.assertEquals(totalChartClicks.get(), clicks);