The Elementary dbt package includes the following schema validation tests:

Schema changes

Fails on changes in schema: deleted or added columns, or change of data type of a column.

Schema changes from baseline

Fails if the table schema is different in columns names or column types than a configured baseline (can be generated with a macro).

JSON schema

Monitors a JSON type column and fails if there are JSON events that don’t match a configured JSON schema (can be generated with a macro).

Exposure schema

Monitors changes in your models’ columns that break schema for downstream exposures, such as BI dashboards.