I am just exploring mocha and I am facing a strange error. I have a not project and want to write some tests.
I have installed the node
npm install --save-dev mocha My code is:
const assert = require('assert'); const ganache = require('ganache-cli'); const Web3 = require('web3'); const web3 = Web3(ganache.provider()); class Car{ park(){ return 'stopped!'; } drive(){ return 'vroom'; } } describe('Car', () => { it('Can be', () => { const car = new Car(); assert.equal(car.park(), 'stopped!'); }) }) I have also updated the Script element in the package.json
"scripts": { "test": "mocha" }, When I run the test using the command:
npm run test I am getting the following Error:
Error: You need to instantiate using the "new" keyword. Stack Trace:
> [email protected] test > mocha Error: You need to instantiate using the "new" keyword. at Object.packageInit (/Users/username/Blockchain/BlockchainEtherium/blockchain/node_modules/web3-core/lib/index.js:27:15) at Web3 (/Users/username/Blockchain/BlockchainEtherium/blockchain/node_modules/web3/lib/index.js:39:10) at Object.<anonymous> (/Users/username/Blockchain/BlockchainEtherium/blockchain/test/inbox.test.js:5:14) at Module._compile (node:internal/modules/cjs/loader:1112:14) at Object.Module._extensions..js (node:internal/modules/cjs/loader:1166:10) at Module.load (node:internal/modules/cjs/loader:988:32) at Function.Module._load (node:internal/modules/cjs/loader:834:12) at ModuleWrap.<anonymous> (node:internal/modules/esm/translators:170:29) at ModuleJob.run (node:internal/modules/esm/module_job:198:25) at async Promise.all (index 0) at ESMLoader.import (node:internal/modules/esm/loader:409:24) at importModuleDynamicallyWrapper (node:internal/vm/module:438:15) at formattedImport (/Users/username/Blockchain/BlockchainEtherium/blockchain/node_modules/mocha/lib/nodejs/esm-utils.js:7:14) at Object.exports.requireOrImport (/Users/username/Blockchain/BlockchainEtherium/blockchain/node_modules/mocha/lib/nodejs/esm-utils.js:38:28) at Object.exports.loadFilesAsync (/Users/username/Blockchain/BlockchainEtherium/blockchain/node_modules/mocha/lib/nodejs/esm-utils.js:91:20) at singleRun (/Users/username/Blockchain/BlockchainEtherium/blockchain/node_modules/mocha/lib/cli/run-helpers.js:125:3) at Object.exports.handler (/Users/username/Blockchain/BlockchainEtherium/blockchain/node_modules/mocha/lib/cli/run.js:370:5) Looking forward to your help.
Thanks
