Translate comments into English and unify test files by model.

[fcno]

Proposed changes (mandatory)

Describe the big picture of your changes here to communicate to the maintainers why we should accept this pull request. If it fixes a bug or resolves a feature request, be sure to link to that issue.

1. What is the current behavior? (if appropriate)

   Fixes Issue Number: N/A

2. What is the new behavior? (if appropriate)

   • Something

   • Else

Pull Request Types (mandatory)

What types of changes does your code introduce? Put an x in the boxes that apply

• Doc update (non-breaking change which fixes typos or improve readability)

• [] Bug fix (non-breaking change which fixes an issue)

• [] New feature (non-breaking change which adds functionality)

• [] Breaking change (fix or feature that would cause existing functionality to not work as expected)

• [] Other (please describe):

Before you submit a pull request, please make sure you have to following (mandatory)

Go over all the following points, and put an x in all the boxes that apply. If you're unsure about any of these, don't hesitate to ask. We're here to help!

• My code follows the code style of this project.

• I have commented my code, particularly in hard-to-understand areas.

• I have made corresponding changes to the documentation.

• I have read the CONTRIBUTING document.

• I have added tests that prove my fix is effective or that my feature works.

• All new and existing tests and lint passed.

Any relevant logs, error output, etc (if appropriate)

Screenshots (if appropriate)

Further comments (if appropriate)

If this is a relatively large or complex change, kick off the discussion by explaining why you chose the solution you did and what alternatives you considered, etc...

💔Thank you!