how can I run a truffle test in a debugger?

Question

as a developer I want to run my javascript test in a debugger so as to be able to step through tests and inspect the values of variables.

The goal is to run it in a Mocha debug mode

I would like to run the JavaScript test in debug mode not the contract — Micha Roon, Apr 08 '17 at 09:34
There is a solution - it is possible to use node inspector to debug tests (as well as IDEs such as VSCode). I posted the details about node inspector here - https://ethereum.stackexchange.com/a/43633/36407 — Borys Serebrov, Mar 23 '18 at 09:54
5 people marked as duplicate, but the question is different.@DrGorb test is debug mode as opposed to debugging the contract. — Mars Robertson, Apr 04 '18 at 12:31

score 7 · Accepted Answer · answered Apr 08 '17 at 16:03

7

Due to the way Truffle interacts with Mocha's API (i.e. programmatically), there are only a handful of options we can specify in the mocha config in our truffle.js file (grep, ui, reporter, timeout, bail, useColors, retries, slow, ignoreLeaks, fullTrace).

I would also like this functionality, so I raised the issue over at the Mocha repo.

Note that this is not a direct answer to your question, but I can't comment in this stackexchange forum due to my current reputation level; just wanted to share my research.

answered Apr 08 '17 at 16:03

Travis Jacobs

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It's been one year and a half. No updates in the meantime? – Paul Razvan Berg Nov 23 '18 at 13:53
@PaulBerg look at the comments on the original post. Something over here may help you: https://ethereum.stackexchange.com/questions/41094/debugging-js-unit-tests-with-truffle-framework-in-vs-code/43633#43633 – Travis Jacobs Nov 23 '18 at 13:59
I switched to hardhat because of this – Micha Roon Dec 21 '21 at 23:11

how can I run a truffle test in a debugger?

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