So I'd like to use the commandline debugger in truffle.

To test I simply run truffle test

I have an empty truffle.js file.

I can get my transaction ID in the javascript tests. When I run:

 truffle debug 0xce1bc402758bd7b6995d82430214c283967371ade97b01bd46e1fe074ea0a4c2

I get:

Error: No network specified. Cannot determine current network.

I'm guessing this is because after the test ran truffle shut down the test network?

I know I could use testrpc, but it causes a lot of problems for me.

Is there a way to use truffle debug with their new built in test framework?


edit When attempting to use testrpc I get this error message after every test case : Error: VM Exception while processing transaction: revert

this is my truffle.js

module.exports = {
  networks: {
    development: {
      host: "localhost",
      port: 8545,
      network_id: "*", // Match any network id
      gas: 6712388


but when I comment out the development network, then truffle defaults to the "test" network and everything works fine.

edit2 I should note that my tests take a lot of gas. So im guessing that the reverts are caused because an object that is expected to be there is not because I didn't have enough gas to deploy it. I tried increasing the gas limit in truffle.js but that fails with some other error...

2 Answers 2


There is a file called "truffle.js". In this file, you must specify the network you want to use.

Moreover, when running a command, you can specify the network to use:

More information here

  • my truffle.js is empty and truffle seems to default to using the network "test." If i try to specify my own address I get an error saying that it cant run due to gas fees... Commented Jan 26, 2018 at 0:56
  • Can you paste in your original post the exact error you get? Commented Jan 26, 2018 at 0:58
  1. Use ganache-cli, the successor of testrpc (see here for more details)

  2. Run ganache-cli as follows:

    ganache-cli --port=8545 --gasLimit=0xfffffffffff --account=0x0123456789abcdef0123456789abcdef0123456789abcdef0123456789abcdef,1000000000000000000000000000000000000000

    If you need more than one account in your tests, then just add as many --account=... as you need (separated by space), and use a different key for each one of them.

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