Ugh, I have been advocating "Solidity--" for years and can't get funding to build it (Trail of Bits).
We use two tools to offer quick turnaround automated testing and verification for Solidity: Echidna (like QuickCheck for Solidity) and Manticore (a symbolic verifier). They each let you write high level properties in the span of 1-2 weeks that cover a large amount of potential use cases.