[datadog_synthetics_test] Feature Request: Add support for new gRPC unary request type and assertions

[ljamesd15]

Affected Resource(s)

Please list the resources as a list, for example:

• datadog_synthetics_test

Expected Behavior

Docs and implementation for grpcUnaryCall in Field "config.assertion.Option1.type"

https://docs.datadoghq.com/api/latest/synthetics/#create-an-api-test

https://github.com/DataDog/terraform-provider-datadog/blob/master/docs/resources/synthetics_test.md

Important Factoids

The feature is available in the datadog console

References

Are there any other GitHub issues (open or closed) or Pull Requests that should be linked here? For example:

• Similiar to [datadog_synthetics_test] Add support for grpc subtype #1500 but adding support for gRPC unary calls