[Ethereum] How to i reset ether balances in truffle

testrpctruffle

If you use truffle for a while, you gradually deplete all your ether from the default account. Now truffle is defunct. How do I top-up the ether?

Note I think truffle uses testrpc in the default when you run truffle test or truffle develop. But I don't know how to take advantage of this, and can't find where testrpc is installed.

Clarifications added after initial post:

Truffle starts testrpc internally when you run truffle test, so I can't provide parameters to testrpc. Truffle/testrpc save the ether balances from run to run, so that the ether balance for accounts[0] is continuously depleted over time. I have been constantly replenishing the ethers in accounts[0] by transferring ether manually from higher numbered accounts in the truffle develop console. Also, I can't find where testrpc is installed so I can't run it manually. Additionally, I can't figure out how truffle runs testrpc, though I have looked in the truffle executable file (/usr/local/bin/truffle on my computer).

Solution:

Turns out my problem was I had an instance of truffle develop running in another tab. That is why the ether balances were continuously depleting. Oops!

Best Answer

I cannot answer how to replenish after the local blockchain is already running, but it is possible to start your accounts with (much) more ether.

Firstly, testrpc has now been replaced by ganache-cli, which is just the same. It stands for ganache command line as there is also a gui available. As you said, when you run commands such as truffle test, the default setup of ganache-cli is launched. Therefore to add options you have to first start your custom ganache. Assuming you have Node.js installed just run the following to install ganache-cli:

npm install -g ganache-cli

Then to start ganache with, for example, 10'000 ether on each of the 10 addresses run:

ganache-cli --defaultBalanceEther 10000

Now when you run truffle test, it will be on this local blockchain and you should have enough to work with.

Refer to the following link for more options such as number of accounts or gas price: ganache-cli doc

Related Solutions

[Ethereum] Custom balance accounts testrpc

From the documentation, you can explicity specify a new account address and balance using the following syntax:

--account: Specify --account=... (no 's') any number of times passing arbitrary private keys and their associated balances to generate initial addresses:

$ testrpc --account="<privatekey>,balance" [--account="<privatekey>,balance"]

Note that private keys are 64 characters long, and must be input as a 0x-prefixed hex string. Balance can either be input as an integer or 0x-prefixed hex value specifying the amount of wei in that account.

I'd suggest running testrpc without the --account option to get the randomly generated list of addresses, making a note of them, and then using them in conjunction with whatever balances you want them to have (by passing them to --account).

[Ethereum] Sending test ether on Testrpc

You're submitting an argument called amount, not a payment in Ether.

return projectBeingFunded.fund({from: account, amount:amountToGive});

That would almost be appropriate if the contract function read:

function fund(uint amount) returns(bool) {}

Would actually be:

return projectBeingFunded.fund(amountToGive, {from: account});

But it actually says no arguments are expected, and ETH is expected:

function fund() payable returns (bool) { ...

The unexpected argument is a JUMP. So, try this:

return projectBeingFunded.fund({from: account, value: amountToGive});

Where amountToGive is a uint in Wei and the sender has that much money, as I assume is the case.

Hope it helps.

Best Answer

Related Solutions

[Ethereum] Custom balance accounts testrpc

[Ethereum] Sending test ether on Testrpc

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