I write a lot of automated tests. Most of the times, it all goes nice and smooth, like a good song. But once in a while i run into an automation situation that leaves me completely baffled. Debugging does not reveal how to fix it, and it is not very obvious to me what is going on. When do i realize what the issue was, i’m like ‘WOW i did not expect that’. These kind of stories are good to share, so that you know what to expect, should you encounter the same behavior. So, here is the peculiar, true story of Selenium, the StaleElementReferenceException, the iframe, the List and the WebElement. Continue reading The weird true story of Selenium, the StaleElementReferenceException, the iframe, the List and the WebElement
Tag Archives: list
Removing duplicates from a List
When working with lists, sometimes you only want them to contain distinct elements. There are two options to create lists without duplicates: either to not add these from the start, or, if that is not possible or too difficult, to remove the duplicates from the list later on. Let’s see how you can do both of these. Continue reading Removing duplicates from a List
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Easily compare a list of Strings with the contents of a file
Context: you need to check that the values you have in a List of Strings are the same as the contents of a file. An element in the List will correspond to an entire line from the file. How can you achieve this easily? Continue reading Easily compare a list of Strings with the contents of a file
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Using Lists to get UI elements with nearly impossible selectors
Where does this approach apply? One of the following:
- if you have a list of elements with identical selectors. The element you are interested in is an element of that list. But it does not always appear in the same place in the list. Sometimes it might be the third element in the list, other times it might be the second, or the fourth, and so on. You only know that using getText() on the element returns a known text.
- if the element you are searching for has a different selector each time you open the page. You know only the type of element it is (whether it is a button, or an a element representing a link, or an img element) and what text should be displayed on that element.
- if the element you are looking for does not even have any attached attributes. That means it is only a tag, without an id or class, or anything else except for the tag name (tag being ‘a’ for links, ‘img’ for images, and so on). You know what getText() should return when applied to that element.
Continue reading Using Lists to get UI elements with nearly impossible selectors
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@FindBy, Lists and using them to check for similar UI elements
This is going to be a rather complex post, that will show how to easily check for values of similar UI elements. By similar i mean elements that share some kind of properties: whether they have the same CSS selector, or are part of the same group of elements. Some examples will be shown below. Performing the testing part will imply the use of @FindBy (of Selenium WebDriver) and List (of Java). Read on to get an idea of where this approach can be used, how @FindBy is ideal for such a task, what the basics of working with List are, and what an actual test looks like. Continue reading @FindBy, Lists and using them to check for similar UI elements
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Working with lists: ImmutableList
When you are faced with a task that involves using lists, you might want to consider the following question: are the elements in my list ever going to change, or is it enough to just add my elements to the list once and use them across my tests. Is my list a constant? In case your elements will not change, you can use an ImmutableList to store them, which brings a major advantage: defining a list in one line. ImmutableList is part of the ‘guava’ library. Continue reading Working with lists: ImmutableList
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