## Testing, Tools & Alternatives

### Code Rot 

- Out of band changes 
- Unpinned versions 
- Deprecated dependancies 
- Unapplied changes 

### Testing 

Built in 

- terraform fmt 
- terraform validate 
- terraform plan 
- custom validation rules 

External tools 
- tflint 
- Scanning tools - checkov, tfsec, terrascan, terraform-compliance, snyk 
- Managed Cloud offering - terraform sentinal 

Automated testing - Terratest / Shell Scripts 

Terraform Cloud

Terragrunt 

runatlantis.io 

### Alternatives 

Pulumi 
 

## Resources 
I have listed a lot of resources down below and I think this topic has been covered so many times out there, If you have additional resources be sure to raise a PR with your resources and I will be happy to review and add them to the list. 

- [What is Infrastructure as Code? Difference of Infrastructure as Code Tools ](https://www.youtube.com/watch?v=POPP2WTJ8es)
- [Terraform Tutorial | Terraform Course Overview 2021](https://www.youtube.com/watch?v=m3cKkYXl-8o)
- [Terraform explained in 15 mins | Terraform Tutorial for Beginners ](https://www.youtube.com/watch?v=l5k1ai_GBDE)
- [Terraform Course - From BEGINNER to PRO!](https://www.youtube.com/watch?v=7xngnjfIlK4&list=WL&index=141&t=16s)
- [HashiCorp Terraform Associate Certification Course](https://www.youtube.com/watch?v=V4waklkBC38&list=WL&index=55&t=111s)
- [Terraform Full Course for Beginners](https://www.youtube.com/watch?v=EJ3N-hhiWv0&list=WL&index=39&t=27s)
- [KodeKloud -  Terraform for DevOps Beginners + Labs: Complete Step by Step Guide!](https://www.youtube.com/watch?v=YcJ9IeukJL8&list=WL&index=16&t=11s)
- [Terraform Simple Projects](https://terraform.joshuajebaraj.com/)
- [Terraform Tutorial - The Best Project Ideas](https://www.youtube.com/watch?v=oA-pPa0vfks)
- [Awesome Terraform](https://github.com/shuaibiyy/awesome-terraform)

See you on [Day 57](day57.md)