Selenium series: modifying HTTP responses

Matthew Casperson's blog post discusses using BrowserMob to enhance Selenium WebDriver test frameworks by intercepting and altering network responses. The article explains how BrowserMob allows testers to block unnecessary network requests, mock responses for deterministic tests, and modify responses to target specific edge cases. A practical example is provided where a simple web page retrieves the sunset time in Hawaii from the Yahoo weather API, with BrowserMob used to replace this response with a fixed value for testing purposes. The process involves setting up a response filter to modify the API response, ensuring tests have predictable inputs, and allowing simulation of difficult-to-recreate conditions. This technique is demonstrated by altering API responses to provide controlled test scenarios, illustrating the utility of BrowserMob in creating reliable and flexible automated tests.