[Ethereum] Ganache (UI) save blockchain

Meanwhile I figured out the issue thanks to this blog post: https://forum.openzeppelin.com/t/truffle-tests-not-being-run-against-contract-deployed-to-ganache-instead-uses-another-contract-address/4402/15

Summary

• Truffle test always deploys a new contract to ensure tests run on a clean contract (however I couldn't make it visible in Ganache UI)
• Adding overwrite: false as argument to the deploy function in the migrations script seems to do the trick
• However, in the version I used only adding the overwrite argument doesn't work, only when adding also another argument like "from"

Using the following deploy script worked for me to connect truffle test with an existing contract visible in Ganache UI:

 module.exports = async function (deployer) {
   const accounts = await web3.eth.getAccounts();
   await deployer.deploy(Test, {from: accounts[0], overwrite: false});
   this.deployedTest = await Test.deployed();
   console.log(`Migrations deployed Test Contract: ${this.deployedTest.address}`);
};

okay. I found the solution. I can add a local network in my network list with :

brownie networks add Ethereum ganache-local host=http://127.0.0.1:7545 chainid=5777

where ganache-local is a name i choose and where host + chainid is from the running Ganache-desktop version. After running that command you can see a Success message:

SUCCESS: A new network 'ganache-local' has been added
  └─ganache-local
    ├─id: ganache-local
    ├─chainid: 5777
    └─host: HTTP://127.0.0.1:7545

if you run now brownie networks list, under the Ethereum section you will see the new ganache-local

Ethereum
  ├─Mainnet (Infura): mainnet
  ├─Ropsten (Infura): ropsten
  ├─Rinkeby (Infura): rinkeby
  ├─Goerli (Infura): goerli
  ├─Kovan (Infura): kovan
  └─ganache-local: ganache-local

now i can run brownie run scripts/deploy.py --network ganache-local and deploy to ganache-desktop

you can delete the network with brownie networks delete ganache-local