What should input validation be based on?
Input validation should occur when data is received from an external party, especially if the data is from untrusted sources. Incorrect input validation can lead to injection attacks, memory leakage, and compromised systems.
Why is data validation important in application?
Data validation is a crucial tool for every business as it ensures your team can completely trust the data they use to be accurate, clean and helpful at all times. Making sure the data you use is correct is a proactive way to safeguard one of your most valuable, demand-generating assets.
What’s the difference between an API and a library?
If a running code wants to talk with another running code, it needs an Application programming interface (API). And since a library refers to a chunk of running codes that are designed to be reused during development, an API is the method or means by which these running codes interact with each other.
Why do you need to test an API?
Once we have a solid foundation of unit tests which cover individual functions, API tests provide higher reliability covering an interface closer to the user, yet without the brittleness of UI tests. API tests are fast, give high ROI, and simplify the validation of business logic, security, compliance, and other aspects of the application.
What’s the best way to test a REST API?
The guidelines above are applicable to any API, but for simplicity, in this post, we assume the most widely used Web API architecture — REST over HTTP.
Why do you need validation in the back end?
You generally want validation in your db because you generally want to ensure that your data is consistent and obeys certain constraints. You should validate in the back end because usually that is where the ‘truth’ about the business logic lies, and validating there can save needless trips to the db to save invalid data.