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Breaking Boundaries Using Charles

Breaking Boundaries Using Charles

Suman Bala: QA Lead and Automation Specialist at Sky

Quite often we struggle to test all scenarios due to the limitation of test data especially when apps rely on 3rdparty services and testing at different territories is required. Depending on the testability of your product, it can be hard to check all corner cases if the production back-end must be used and cannot be tricked. With a proxy, you can change what will be displayed.

Charles Proxy is known as Man-In-The-Middle and is loaded with features. Charles not only allows us to learn more about how our app functions the way it does, but it also opens our eyes to an entirely new array of testing possibilities to explore. Charles Proxy can help to identify the cause of the bug that relates to your app making/receiving network calls/responses!

Takeaways – how to use Charles on iOS and Android devices. – Observing and modifying HTTP Requests and Responses – How to add a breakpoint and when not to use breakpoints – Rewritingusing map local and remote – Network throttling – Charles for iOS; enabling you to capture traffic directly on iOS device.


Suman is a QA advocate with a passion for improvement in quality processes and is a strong believer in Test Automation. She started his testing journey nearly 15 years ago and she has designed & developed an automation framework from scratch for various products from middleware graphics library, e-commerce & mobile apps. She has honed her capabilities in coaching, mentoring, and team leading, as well as more strategic and technical demands associated with testing. Her mission is to develop teams to transform their thinking, approach, and capability, resulting in a happier and more efficient workforce. She feels proud of how people’s perspective has changed regarding testing throughout her career. She is striving to instil the idea that quality is everyone’s responsibility as opposed to merely laying it at the feet of QA. She is a co-organizer for the Ministry of Testing Leeds meet-up. She is part of multiple initiatives groups at Sky such as women in tech, better allies, grassroots leaders, and co-founder of the public speaking guild. Talk to her about quality first, building inclusive teams, and cooking.