Scribbles for my bad memory

When working with Postman to automate API testing, you might encounter scenarios where you want to conditionally skip the execution of subsequent requests in a collection. This can be useful if a certain condition isn't met in your API responses. Here's a guide on how to achieve this using Postman's scripting capabilities.

Scenario

Imagine you have a collection where the first request returns a response like this:

{
    "content": "True",
    "statusCode": 200,
    "message": "Global value got from DbConfig!"
}

You want to skip all subsequent requests if the content field is "False".

Step-by-Step Guide

1. Set Up Your Collection: Ensure your collection is organized with the request you want to evaluate placed at the beginning.

2. Write a Post-Request Script: In the test script section of the first request, you'll write a script to check the content field and decide whether to continue the collection run.

   // Parse the response
   let response = pm.response.json();
   
   // Check the content value
   if (response.content === "False") {
       pm.execution.setNextRequest(null); // Skip the remaining requests
   }
   

   This script checks if the content is "False". If it is, pm.setNextRequest(null) stops all subsequent requests from running.

3. Test the Flow: Run your collection to see the logic in action. If the condition is met (i.e., content is "False"), the collection run will halt after the first request.

Explanation

• pm.response.json(): This method parses the JSON response from your request.
• pm.setNextRequest(null): This function is used to stop further requests in the collection run. If the condition isn't met, the collection continues with all remaining requests in their original order.

Benefits

• Efficiency: Avoid unnecessary API calls when certain conditions aren’t met, saving time and resources.
• Control: Gain greater control over your testing workflows by dynamically determining execution paths.

Conclusion

Using pm.execution.setNextRequest(null) in a test script provides a straightforward way to control the flow of your Postman collection runs based on specific conditions in your API responses. This technique can be a powerful tool in optimizing your automated testing processes.

Feel free to customize the logic to fit your specific needs!