uncertain behaviour when combining selenium test cases into JUnit test suite

Question

I have a scenario where I have 29 test cases. All the test cases pop-up new firefox windows and run to completion when run independently. However when I combine the test cases(all 29) into a test suite, I get random errors of "unable to locate element". If I run the test suite multiple times, I can see different test cases fail at different places, randomly. Note- I am waiting for every elements visibility for around 100 seconds, before clicking on them. Code looks like-

    WebElement myDynamicElement = (new WebDriverWait(driver, 100))
    .until(new ExpectedCondition<WebElement>() {
    @Override
    public WebElement apply(WebDriver driver) {
    return driver.findElement(element);
    }

Could someone advice? Are smaller test suites recommended?

Answer 1

not so far come across with a similar problem type. IMHO try to use a lil bit more robust wait mechanism fluentWait:

public WebElement fluentWait(final By locator){
            Wait<WebDriver> wait = new FluentWait<WebDriver>(driver)
                    .withTimeout(30, TimeUnit.SECONDS)
                    .pollingEvery(5, TimeUnit.SECONDS)
                    .ignoring(org.openqa.selenium.NoSuchElementException.class);
            WebElement foo = wait.until(
                    new Function<WebDriver, WebElement>() {
                        public WebElement apply(WebDriver driver) {
                            return driver.findElement(locator);
                        }
                    }
            );
            return  foo;              }     ;

here is documentation on fluent wait

usage be like :

String cssSelectorElement ="blablablab";
String xPathElement = "balblabla";

fluentWait(By.cssSelector(cssSelectorElement)).click()
//fluentWait(By.cssSelector(cssSelectorElement)).getText();

fluentWait(By.xpath(xPathElement)).click()
//fluentWait(By.xpath(xPathElement)).getText();

Don't forget about step by step debug in IDE(IDEA, Eclipse,NetBeans) you work.