In this post, we will show how you can write fuzz tests for your JavaScript projects in Jest as easily as regular unit tests. To make this possible, we have added integration for Jazzer.js into Jest, which enables you to write fuzz tests using the familiar Jest API. Additionally, you get great IDE support with features such as debugging and test coverage reporting out-of-the-box. This integration enables a smooth user experience with the advanced fuzzing technology provided by Jazzer.js.

Web technologies are continuously evolving; both through growth and modernization. Modern web applications are becoming a must in enabling businesses to be able to sell online, acquire customers, and deliver the digital experiences today’s users want. Companies from various industries are increasingly relying on transacting sensitive Personal Identifiable Information (PII) digitally.

The LCBO, a major Canadian retailer, recently experienced a cybersecurity breach that compromised the personal information of thousands of customers. The incident, which was discovered on January 10th, affected the client-side of the company’s website through which LCBO conducts online sales. It resulted in the unauthorized access of sensitive information such as names, addresses, email addresses, LCBO.com account passwords, Aeroplan numbers, and credit card information.

Inversion of control (IoC) techniques give developers a way to break out of traditional programming flow, and it offers them more flexibility and greater control over their code. Dependency injection, one form of IoC, is a pattern that aims to separate the concerns of constructing objects and using them. In this article, you’ll learn what dependency injection is, when you should use it, and what popular JavaScript frameworks it’s implemented in.