Add data_test

[matthewshaver]

Contributions

• I have read the contribution docs, and understand what's expected of me.

Link to the page on docs.getdbt.com requiring updates

https://docs.getdbt.com/docs/build/data-tests

What part(s) of the page would you like to see updated?

For for backward compatibility tests: will be an alias for data_tests: in yml configuration files, but we will eventually deprecate tests:

models:

• name: orders
  columns:
  • name: order_id
    data_tests:
    • unique
    • not_null

dbt_project.yml

data_tests: # legacy tests:

Additional information

No response