Some of our deployer and actor tests are very poor (or not exisiting). It's not a very pressing need since we already test everything at the CLI, contract and agent layers, but still...

Actors:
Unit tests for:

• Worker
• Investigator
• NucypherTokenActor.
• Unit tests for PolicyAuthor actor are very small.

Deployers:

• Test test_user_escrow_deployer.py::test_deploy_multiple() needs a fix and it's currently skipped (see Fix py.test warnings #1106).
• In PolicyManagerDeployer, check that StakingEscrow contract address and public parameters are correct
• In StakingEscrowDeployer, check that token contract address and staking parameters are correct.

I'm working on this in a post-alhambra-verde PR (#1111)