proptest on the IC

[lastmjs]

There are a number of issues with compiling and running proptest on the IC, I am working through them:

• Custom implementation of getrandom

  • I have the getrandom stub function, and proptest does compile. I need to fill the function with actual randomness

• Turn off default-features, and only turn on std

• Comment out the environment variables in proptest/src/test_runner/config.rs, during the default Config creation

• Now dealing with time not implemented on this platform

• Try compiling without std...perhaps that could work?

• Get rid of instances of time::Instant::now...it would be nice to get time::Instant::now to work on the IC

• Consider combining tests running within one query call or update call, which should be relatively fast, with full integration tests