Dependency Injection and Mock-based Testing (in-person and virtual)

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Join us for Dependency Injection and Mock-based Testing, presented by Raj Auradkar, Project Architect at Ameriprise Financial!

Loose coupling of software components is crucial for a well designed software architecture. Unit-testing is also enabled when components are separated into separate concerns. However, loose coupling presents a challenge for discovery of components. How does a component discover and use a dependent component? Hard-wiring this dependency inhibits the ability to unit-test a component. Dependency Injection is a pattern that helps address this challenge. However, to write effective unit tests, we need to ensure that the dependent component code is not invoked. If it is invoked, it is no longer a unit-test. Mocking out the dependency and setting expected behavior on them will ensure proper unit-testing.

We will talk about a library called 'fuse' that implements Dependency Injection and wires the component graph. 'fuse' also comes with a package called 'mock' that generates mocks to be used in unit-testing.

Agenda

• 6pm - 6:30pm: Networking, food & drink, and announcements
• 6:30pm - 7:30pm: Dependency Injection and Mock-based Testing - Raj Auradkar
• 7:30pm - 8:00pm - Open Discussion

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Public Safety Guidelines

Please reference current CDC guidelines for public gatherings and health self-assessments before attending in-person. We strongly encourage in-person attendees to be vaccinated but we will not require proof of vaccination. Similarly, we suggest in-person attendees wear a mask indoors. Our main concern is to protect everyone and maintain the safety of our office. If you have any questions or concerns with our recommendations, don’t hesitate to contact us. We also provide a virtual option, via Zoom, for those uncomfortable attending in-person.

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