Decide on unit test generation tools

[rohancme]

• [ ] Find existing unit test generation tools
• [ ] Run these tools on open source repositories 10 times each (Many tools are non-deterministic)
• [ ] Use a code coverage tool to compare coverage
• [ ] Use a mutation testing tool to compare test quality
• [ ] Decide on an order for integration into Wolf. The idea here is that multiple test generation tools will be used in the final version of the tool.