Server should 400 reject malformed pbuffer request

[brunobowden]

Summary

The following is invalid protocol buffer request that receives a 200 response but instead should get a 400 response bad request.

$ curl -i \
  -H 'Content-Type: application/json' \
  -H 'Who-Client-ID: 00000000-0000-0000-0000-000000000000' \
  -H 'Who-Platform: WEB' \
  -X POST 'https://staging.whocoronavirus.org/WhoService/getCaseStats' \
  -d '{ jurisdictions: [ { jurisdictionType: COUNTRY, INVALID: US } ] }'

HTTP/2 200 
content-type: application/json
x-cloud-trace-context: a62ac816e2fd1dce274ef2ad5d95ecb8;o=1
date: Sat, 26 Dec 2020 20:47:16 GMT
server: Google Frontend
content-length: 67
via: 1.1 google
alt-svc: clear

{"jurisdictionStats":[{"lastUpdated":0,"timeseries":[]}],"ttl":600}% 

Checklist:

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