Hi abcoathup,
I unbox the truffle drizzle, and alter the erc20 token to erc777. I have installed openzepplin test helper. But when i deploy the contract, i get error message:
I am newbie here and I have still a problem to use the test helpers.
Here it is my trace:
pc15:client alexandre$ truffle test/votingGUI.test.js
Using network 'test'.
Compiling your contracts...
===========================
> Everything is up to date, there is nothing to compile.
Error: Cannot find module '@openzeppelin/test-helpers'
Require stack:
- /Users/alexandre/WebstormProjects/VotingGUI/test/votingGUI.test.js
- /usr/local/lib/node_modules/truffle/node_modules/mocha/lib/mocha.js
- /usr/local/lib/node_modules/truffle/node_modules/mocha/index.js
- /usr/local/lib/node_modules/truffle/build/cli.bundled.js
at Function.Module._resolveFilename (internal/modules/cjs/loader.js:902:15)
at Function.Module._load (internal/modules/cjs/loader.js:746:27)
at Module.require (internal/modules/cjs/loader.js:974:19)
at require (internal/modules/cjs/helpers.js:92:18)
at Object.<anonymous> (/Users/alexandre/WebstormProjects/VotingGUI/test/votingGUI.test.js:1:43)
at Module._compile (internal/modules/cjs/loader.js:1085:14)
at Object.Module._extensions..js (internal/modules/cjs/loader.js:1114:10)
at Module.load (internal/modules/cjs/loader.js:950:32)
at Function.Module._load (internal/modules/cjs/loader.js:790:14)
at Module.require (internal/modules/cjs/loader.js:974:19)
at require (internal/modules/cjs/helpers.js:92:18)
at /usr/local/lib/node_modules/truffle/node_modules/mocha/lib/mocha.js:390:36
at Array.forEach (<anonymous>)
at Mocha.loadFiles (/usr/local/lib/node_modules/truffle/node_modules/mocha/lib/mocha.js:387:14)
at Mocha.run (/usr/local/lib/node_modules/truffle/node_modules/mocha/lib/mocha.js:961:10)
at /usr/local/lib/node_modules/truffle/build/webpack:/packages/core/lib/testing/Test.js:151:1
at new Promise (<anonymous>)
at Object.run (/usr/local/lib/node_modules/truffle/build/webpack:/packages/core/lib/testing/Test.js:150:1)
at processTicksAndRejections (internal/process/task_queues.js:95:5)
at Object.run (/usr/local/lib/node_modules/truffle/build/webpack:/packages/core/lib/commands/test/index.js:187:1)
at Command.run (/usr/local/lib/node_modules/truffle/build/webpack:/packages/core/lib/command.js:167:1)
Truffle v5.3.13 (core: 5.3.13)
Node v14.17.1
pc15:client alexandre$
However, I did, before in the directory client: (where I have node_modules directory and package.json), these commands:
npm uninstall openzeppelin-test-helpers
npm install @openzeppelin/test-helpers
It sounds strange for me… During my research, have you got any clues to give me please?
Update
When I try to uninstall @openzeppelin/test-helpers, I have this now:
pc15:client alexandre$ npm uninstall @openzeppelin/
npm ERR! code ENOTEMPTY
npm ERR! syscall rename
npm ERR! path /Users/alexandre/WebstormProjects/VotingGUI/client/node_modules/bignumber.js
npm ERR! dest /Users/alexandre/WebstormProjects/VotingGUI/client/node_modules/.bignumber.js-lw5gloMD
npm ERR! errno -66
npm ERR! ENOTEMPTY: directory not empty, rename '/Users/alexandre/WebstormProjects/VotingGUI/client/node_modules/bignumber.js' -> '/Users/alexandre/WebstormProjects/VotingGUI/client/node_modules/.bignumber.js-lw5gloMD'
npm ERR! A complete log of this run can be found in:
npm ERR! /Users/alexandre/.npm/_logs/2021-08-02T07_40_40_528Z-debug.log
pc15:client alexandre$ npm uninstall @openzeppelin/test-helpers
npm ERR! code ENOTEMPTY
npm ERR! syscall rename
npm ERR! path /Users/alexandre/WebstormProjects/VotingGUI/client/node_modules/bignumber.js
npm ERR! dest /Users/alexandre/WebstormProjects/VotingGUI/client/node_modules/.bignumber.js-lw5gloMD
npm ERR! errno -66
npm ERR! ENOTEMPTY: directory not empty, rename '/Users/alexandre/WebstormProjects/VotingGUI/client/node_modules/bignumber.js' -> '/Users/alexandre/WebstormProjects/VotingGUI/client/node_modules/.bignumber.js-lw5gloMD'
npm ERR! A complete log of this run can be found in:
npm ERR! /Users/alexandre/.npm/_logs/2021-08-02T07_41_34_453Z-debug.log
I think it’s a problem with my node.js installed after some reading. I am about to uninstall and reinstall Node.js on my mac, what do you think?
I found the solution! You have to install the dependencies with NPM at the root of your project. So you have to see a "node_modules" directory at the root to recognize the helpers dependencies.