Скачать или смотреть How to Get Dynamic id Attribute Values from Elements in Cypress

Learn how to effectively retrieve dynamic `id` attribute values in Cypress for verifying file uploads by following this in-depth guide.
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How to Get Dynamic id Attribute Values from Elements in Cypress

When working with dynamic web applications, you may encounter scenarios where elements have IDs that change with each session or UI state. This can make automated testing a bit tricky, especially when you need to verify elements based on these dynamic IDs. In this guide, we will explore how to retrieve dynamic id attribute values in Cypress, particularly when validating that a file upload displays the correct file name in a dynamically created field.

Understanding the Problem

Imagine you have a web application with a table that expands rows to show additional information. Each expanded row contains a field displaying the name of an uploaded file. However, the ID attribute for this field is dynamically generated, meaning that it changes every time the page loads. Your goal is to verify that the displayed file name matches the name of the uploaded file.

Here's a simple breakdown of the task at hand:

Expand each row of a table to access the input field where the file name is displayed.

Retrieve the id attribute of the input field to understand its structure.

Compare the file name shown in the field with the name of the uploaded file.

Steps to Solve the Problem

Step 1: Expand Each Row

To begin, you need to expand all rows in the table. In Cypress, you can achieve this by targeting the expand icon for each row. Here's a sample code snippet that demonstrates how to do this using the .each() method:

[[See Video to Reveal this Text or Code Snippet]]

Step 2: Get the Dynamic ID Attribute Values

Once the rows are expanded, you must capture the id of the input fields. Since these IDs contain a common substring ("scenario-"), you can use a CSS selector that matches these inputs. Here's how you can retrieve the id for each expandable row:

[[See Video to Reveal this Text or Code Snippet]]

Step 3: Access the Value Attribute

Now that you can list the IDs, the next step is to get the value of the value attribute from the input field. Here’s how you can do that within the same loop:

[[See Video to Reveal this Text or Code Snippet]]

Step 4: Compare File Names

Finally, after retrieving the displayed file names, you can compare them with the expected uploaded file name. You can add a conditional check within your loop to confirm if they match:

[[See Video to Reveal this Text or Code Snippet]]

Conclusion

By following the steps outlined above, you should be able to dynamically retrieve and validate the id and value attributes from elements within your Cypress tests. This method is particularly useful in scenarios dealing with dynamic content, ensuring that you can effectively automate the testing process.

Remember, understanding the HTML structure and using the right Cypress commands for element selection and interaction is key to successful automated testing. Happy testing!