Availability if New York City data/how to test application ahead of time

[Sonia Putzel]

Hello, we're building a tool to match voters' poll sites with language access services that the Civic Engagement Commission renders at NYC poll sites. We have two questions:

1. Does anyone have a sense of whether poll site data has historically been consistently available for both local and national elections in NYC for this API? And if so, is it usually a full data set (complete response to the queries in a way that fully matches the structures shown in the reference) or does the Board of Elections only provide limited information (for example, only the pollingLocations but not the earlyVoteSites)? We're mainly interested in knowing what we'll receive in the voterInfoResponse. 
2. We saw that election information is usually posted a few weeks before each election. How would you recommend testing an app before the relevant data is posted on the API? Is there a test data set that we can query?

[Sonia Putzel]

... thank you!!!