After a year and a half that I have finished a project, I'm about to start testing another project with Jest and there for I had installed the necessary packages on the development level:
"devDependencies": {
"@types/jest": "^27.4.1",
"supertest": "^6.1.6"
}
When I have start to right automated testing code, right away I'm getting Errors warning:
Cannot find name 'describe'. Do you need to install type definitions for a test runner? Try `npm i --save-dev @types/jest` or `npm i --save-dev @types/mocha`.ts(2582)
I have search for this matter and found this article https://stackoverflow.com/questions/54139158/cannot-find-name-describe-do-you-need-to-install-type-definitions-for-a-test
As suggested I've tried to do adjustments in the tsconfig.json, but unfortunately this didn't resolve my problem. Here is my tsconfig.json:
{
"compilerOptions": {
/* Visit https://aka.ms/tsconfig.json to read more about this file */
/* Language and Environment */
"target": "es6" /* Set the JavaScript language version for emitted JavaScript and include compatible library declarations. */,
/* Modules */
"module": "commonjs" /* Specify what module code is generated. */,
"types": [
"jest"
] /* Specify type package names to be included without being referenced in a source file. */,
/* Interop Constraints */
"esModuleInterop": true /* Emit additional JavaScript to ease support for importing CommonJS modules. This enables `allowSyntheticDefaultImports` for type compatibility. */,
"forceConsistentCasingInFileNames": true /* Ensure that casing is correct in imports. */,
/* Type Checking */
"strict": true /* Enable all strict type-checking options. */,
/* Completeness */
"skipLibCheck": true /* Skip type checking all .d.ts files. */
},
"include": ["src/**/*, tests/*.js"],
"exclude": ["node_modules"]
}
For the tsconfig, it is also complaining the following:
No inputs were found in config file tsconfig.ts.
Specified "include" paths where `["src/**/*, tests/*.js"]` and 'exclude' paths where '["node_modules"]'
How can I resolve these weird issues noticing that I'm not using typescript in my project and I'm not familiar with typescript at this moment.
Thank you in advanced
After taking a break from this problem and do some research, I have manage to come up with a solution. The solution is to install the package @jest/globals
With that installed I have import it to my test file. Here is an example below:
const jest = require("@jest/globals");
const mongoose = require("mongoose");
const request = require("supertest");
const app = require("../express-app");
let server;
jest.describe("Testing Auth Service", () => {
jest.describe("/api/v1/", () => {
jest.beforeEach(() => {
server = require("../index");
});
jest.afterAll(async () => {
await server.close();
});
});
});
If there is a better approach for this, please leave a comment. I would appreciate it.
Kind regards.