Ahnii, fellow Gophers! Today, I want to bring your attention to a blog post that I stumbled upon while flailing about, trying to figure out how to test my Dependency Injected Cobra CLI app.

Golang: Testing Cobra CLI applications with dependency injection helped me the utmost. So thanks and credit to the author, Jack W R Fuller.

Assumptions

Assumes experience with Cobra.

Why This Post is Useful

  • Practical Examples: The post provides practical examples of CLI application development using Go and Cobra CLI.
  • Testing Guidance: It offers guidance on how to test Cobra CLI applications while avoiding the trial and error.
  • Dependency Injection: It touches on the concept of dependency injection.
  • Command Factories: It introduces the command factories design pattern to avoid singleton subcommands.

  • New Cobra project

SHOW DEFAULT main.go and root.go.

GoCreate

To illustrate, here’s my Cobra CLI projects main.go.

https://github.com/jonesrussell/gocreate/blob/nod-to-dependency-injection/main.go

https://github.com/jonesrussell/gocreate/blob/nod-to-dependency-injection/cmd/root.go

https://github.com/jonesrussell/gocreate/blob/nod-to-dependency-injection/cmd/website.go