Issue

Description

Writing unit tests for the Truffle test platform and running them on Ganache CLI, when

1) an EVM snapshot is created,
2) the EVM state changed,
3) the EVM snapshot reverted back,
4) a new EVM snapshot created,
5) the EVM state changed again

the EVM ends up in a state which contains information from the first (reverted) state.

Steps to Reproduce

1. Check out Truffle test project and to navigate into the repo and install dependencies

   git clone https://github.com/outofgas/ganache-snapshot-issue
   cd ganache-snapshot-issue
   npm install
   

2. Run the Truffle test suite on Truffle's internal test net

   node_modules/.bin/truffle test
   

   The tests should be successful.

3. Open a second terminal and navigate to the repo dir and start a Ganache CLI instance

   node_modules/.bin/ganache-cli
   

   Run the Truffle test suite on Ganache's test net

   node_modules/.bin/truffle test --network ganache
   

   The tests fail. Somehow, the state of an EVM snapshot created after reverting the previous one contains state information from the previous. This information becomes visible after the first transaction carried out on the new state.

Environment

• uname -srm

  FreeBSD 11.2-RELEASE amd64
  

• node --version

  v11.1.0
  

• npm --version

  6.4.1
  

• truffle version

  Truffle v4.1.14 (core: 4.1.14)
  Solidity v0.4.24 (solc-js)
  

• ganache-cli --version

  Ganache CLI v6.2.3 (ganache-core: 2.3.1)