Encountering an issue with mocha-typescript throwing an error indicating that describe is not defined.
TypeError: mocha_typescript_1.describe is not a function
at DatabaseTest.WrongPath (test/database_test.ts:21:9)
at Context.<anonymous> (node_modules/mocha-typescript/index.ts:218:22)
Here's my tsconfig.json configuration:
{
"compilerOptions": {
"target": "es6",
"module": "commonjs",
"outDir": "dist",
"sourceMap": true,
"lib": ["es6"],
"experimentalDecorators": true,
"emitDecoratorMetadata": true,
"noUnusedLocals": true,
"noUnusedParameters": true,
"typeRoots": [
"./node_modules/@types"
],
"types": [
"node", "mocha", "chai"
]
},
"include": [
"src/**/*.ts",
"test/**/*.ts"
],
"exclude": [
"node_modules"
]
}
And here's my package.json setup:
{
//omitted
"main": "App.js",
"scripts": {
"pretest": "tsc",
"test": "nyc mocha --require ts-node/register test/**/*_test.ts ",
"watch": "mocha-typescript-watch",
"prepare": "tsc"
},
// ommitted
"dependencies": {
"@types/chai": "^4.0.6",
"@types/jsesc": "^0.4.29",
"@types/mocha": "^2.2.44",
"@types/node": "^8.0.53",
"@types/sqlite3": "^3.1.1",
"chai": "^4.1.2",
"express": "^4.16.2",
"express-longpoll": "0.0.4",
"jsesc": "^2.5.1",
"mocha": "^4.0.1",
"mocha-typescript": "^1.1.12",
"nyc": "^11.3.0",
"reflect-metadata": "^0.1.10",
"sequelize": "^4.26.0",
"sequelize-typescript": "^0.6.1",
"source-map-support": "^0.5.0",
"sqlite3": "^3.1.13",
"ts-events": "^3.2.0",
"ts-node": "^3.3.0",
"typescript": "^2.6.2",
"typings": "^2.1.1"
}
}
database_test.ts contents:
//Unit testing script for Database.ts
/// <reference path="../node_modules/mocha-typescript/globals.d.ts" />
//// <reference path="../node_modules/@types/mocha/index.d.ts" />
import { suite, test, describe, slow, timeout } from "mocha-typescript"
import { assert } from "chai";
import 'mocha'
@suite(slow(1000), timeout(3000))
export class SampleTest {
@test testFunc(){
describe("Sample function", ()=>{
it("Should succeed without any problems", (done) => {
assert.isTrue(true);
done();
})
});
}
}
Full log details:
> <a href="/cdn-cgi/l/email-protection" class="__cf_email__" data-cfemail="58282a37323d3b2c186976687668">[email protected]</a> pretest /home/user/folder/project
> tsc
> <a href="/cdn-cgi/l/email-protection" class="__cf_email__" data-cfemail="3343415c5956504773021d031d03">[email protected]</a> test /home/user/folder/project
> nyc mocha --require ts-node/register test/**/*.ts
SampleTest
1) testFunc
0 passing (13ms)
1 failing
1) SampleTest
testFunc:
TypeError: mocha_typescript_1.describe is not a function
at DatabaseTest.WrongPath (test/database_test.ts:21:9)
at Context.<anonymous> (node_modules/mocha-typescript/index.ts:218:22)
----------|----------|----------|----------|----------|----------------|
File | % Stmts | % Branch | % Funcs | % Lines |Uncovered Lines |
----------|----------|----------|----------|----------|----------------|
All files | Unknown | Unknown | Unknown | Unknown | |
----------|----------|----------|----------|----------|----------------|
npm ERR! Test failed. See above for more details.
Various attempts have been made to resolve the issue such as modifying typeRoots, types in tsconfig.json, adding import mocha, and trying different type definition files. However, none of them have succeeded, leading to confusion and complexities.
The struggle with getting typescript-mocha functioning seamlessly continues, with results being inconsistent. A comprehensive explanation is sought after to unravel the confusion around the configuration.