windows drive letter casing bug

Prerequisites

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Description

Tests fail when drive letter is lower case.

Steps to Reproduce

repro.zip

npm install
node index.js

Expected behavior: [What you expect to happen]

Test should pass and print:

 √ Lean3 project

Actual behavior: [What actually happens]

Tests fail with this error:

TypeError: Cannot read properties of undefined (reading 'describe')

Reproduces how often: [What percentage of the time does it reproduce?]

100%

Versions

• The output of mocha --version and node_modules/.bin/mocha --version: 8.4.0
• The output of node --version: v16.14.0
• Your operating system
  • name and version: Windows 11 21H2 build 22000.588
  • architecture (32 or 64-bit): 64-bit
• Your shell (e.g., bash, zsh, PowerShell, cmd): cmd
• Your browser and version (if running browser tests): running vscode tests using VS code 1.65.2.
• Any third-party Mocha-related modules (and their versions): N/A
• Any code transpiler (e.g., TypeScript, CoffeeScript, Babel) being used (and its version): Typescript.

Additional Information

[Alvarofg]

I think I’m getting an issue that might be related:

this works as expected: node ".\node_modules\mocha\bin\_mocha" -u tdd --timeout 999999 --colors D:\repo\test

this doesn’t work: node ".\node_modules\mocha\bin\_mocha" -u tdd --timeout 999999 --colors d:\repo\test

Error message: TypeError: Cannot read property 'describe' of undefined at exports.describe (d:\repo\node_modules\mocha\lib\mocha.js:112:26) at file:///d:/repo/test/testfile.js:5:1 at ModuleJob.run (internal/modules/esm/module_job.js:169:25) at async Loader.import (internal/modules/esm/loader.js:177:24) at async formattedImport (D:\repo\node_modules\mocha\lib\nodejs\esm-utils.js:7:14) at async Object.exports.requireOrImport (D:\repo\node_modules\mocha\lib\nodejs\esm-utils.js:48:32) at async Object.exports.loadFilesAsync (D:\repo\node_modules\mocha\lib\nodejs\esm-utils.js:103:20) at async singleRun (D:\repo\node_modules\mocha\lib\cli\run-helpers.js:125:3) at async Object.exports.handler (D:\repo\node_modules\mocha\lib\cli\run.js:374:5)

the only difference is the capitalization of the D/d drive. I notice the capitalization changes in the error message. I’m using windows 10

edit: This is probably my fault here, my test file was something like this: const Mocha = require("mocha"); Mocha.describe("#repro", function () { //... })

changing it to: const Mocha = require("mocha"); const mocha = new Mocha({ ui: 'bdd' }); describe("#repro", function () { })

since to render it case insensitive after changing the command to node ".\node_modules\mocha\bin\_mocha" -u bdd --timeout 999999 --colors d:\repo\test

(bdd instead of tdd)

[juergba]

edit: This is probably my fault here, my test file was something like this: […]

Yep looks like what I’m getting also.

Perfect.