Preventing non-JSON-serializable types

[Chris-May-WS]

Every now and then, our tests fail because polyfactory (or Faker) creates a Decimal for a value, and our tests fail because it tried to convert the Decimal to JSON.

How would I tell faker to not use Decimals?

Or is there a better way?

[Chris-May-WS]

For now, I told the factory to ignore one field and sets a hard value for another:

class BundleFactory(ModelFactory[DocumentBundle]):
    additional_info = {}  # noqa: RUF012
    queries = Ignore()

[guacs]

You can override the get_provider_map to ensure Decimal is not created. That is, override the callable that is mapped to Decimal.

However, polyfactory should only create Decimal for fields annotated as Decimal. If we don't create a Decimal, wouldn't pydantic complain when creating the model instance??

[Chris-May-WS]

Indeed. In this case, we're early enough in a project that we haven't nailed down some of the attributes fully, so some attributes are annotated as lists or dictionaries, which I assume means lists of Any and dicts of Any. As a result, some items of these cicts are occasionally decimals.

We aren't using Decimals anywhere in our project.

Thanks for the insight!

[guacs]

Aah I see. This is due to faker then. The relevant lines are here so if you override list, dict etc. via get_provider_map, then you won't be getting any Decimal instances.

[Chris-May-WS]

Thanks again!!!