Script that shows the differences between Zebra and zcashd RPC responses

[teor2345]

Motivation

In the address index review meeting last week, we talked about testing address indexes.

One of the ways we can test is by comparing RPC responses from Zebra and zcashd.

Designs

We can test RPCs by:

• making sure Zebra and zcashd are synced to the same height
• sending the same RPC query to both
• formatting both responses using the same formatter
• comparing their responses
• fixing any Zebra differences
• adding a snapshot test to make sure they stay fixed (Add RPC response snapshot tests #4131)

This could be a Rust script, we already have a tool that queries zcashd RPCs. Or it could be a shell script.

Optional Features

Automatically ignore expected differences, including:
- extra zcashd fields
- irrelevant order differences (but the getaddresstxids RPC guarantees that the transactions will be in chain order)
- irrelevant data differences

Related Work

• Add RPC response snapshot tests #4131