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nyc on Windows shows 0 coverage

See original GitHub issue

Link to bug demonstration repository

https://github.com/mariszin/nyc-coverage-0-sample

(Taken from #1076…)

Expected Behavior

After tests, nyc should show 100% coverage

Observed Behavior

When running tests on Windows, the coverage is 0. Not even after upgrading to nyc@15

C:\ws\nyc-coverage-0-sample>nyc mocha


  HelloWorld
    √ should return hello world with no arguments
    √ should return passed argument


  2 passing (6ms)

---------------|----------|----------|----------|----------|-------------------|
File           |  % Stmts | % Branch |  % Funcs |  % Lines | Uncovered Line #s |
---------------|----------|----------|----------|----------|-------------------|
All files      |        0 |        0 |        0 |        0 |                   |
 helloWorld.js |        0 |        0 |        0 |        0 |         1,2,3,5,9 |
---------------|----------|----------|----------|----------|-------------------|


C:\ws\nyc-coverage-0-sample>npm ls nyc
nyc-coverage-0@1.0.0 C:\nyc-coverage-0-sample
`-- nyc@14.1.1


C:\ws\nyc-coverage-0-sample>npm i nyc@15 --save-dev
npm WARN nyc-coverage-0@1.0.0 No description                                                                                                                                          bel\helper-module-transforms-1c5a7680 (356ms)
npm WARN nyc-coverage-0@1.0.0 No repository field.

+ nyc@15.1.0
added 65 packages from 26 contributors, removed 29 packages and updated 25 packages in 11.652s

25 packages are looking for funding
  run `npm fund` for details


C:\ws\nyc-coverage-0-sample>nyc mocha


  HelloWorld
    √ should return hello world with no arguments
    √ should return passed argument


  2 passing (7ms)

---------------|---------|----------|---------|---------|-------------------
File           | % Stmts | % Branch | % Funcs | % Lines | Uncovered Line #s
---------------|---------|----------|---------|---------|-------------------
All files      |       0 |        0 |       0 |       0 |
 helloWorld.js |       0 |        0 |       0 |       0 | 1-9
---------------|---------|----------|---------|---------|-------------------

Troubleshooting steps

still occurring when I put cache: false in my nyc config

Environment Information

C:\ws\nyc-coverage-0-sample>npx envinfo@latest --preset nyc
'npx' is not recognized as an internal or external command,
operable program or batch file.

C:\ws\nyc-coverage-0-sample>npm i -g envinfo
C:\Program Files (x86)\Nodist\bin\envinfo -> C:\Program Files (x86)\Nodist\bin\node_modules\envinfo\dist\cli.js                                                                       node_modules\.staging
+ envinfo@7.7.3
added 1 package from 1 contributor in 0.862s

C:\ws\nyc-coverage-0-sample>envinfo --preset nyc

  System:
    OS: Windows 10 10.0.19041
    CPU: (8) x64 Intel(R) Core(TM) i7-8550U CPU @ 1.80GHz
    Memory: 2.95 GB / 15.85 GB
  Binaries:
    Node: 12.18.4 - C:\Program Files (x86)\Nodist\bin\node.EXE
    npm: 6.14.6 - C:\Program Files (x86)\Nodist\bin\npm.EXE
  npmPackages:
    nyc: ^15.1.0 => 15.1.0

Issue Analytics

State:
Created 3 years ago
Reactions:2
Comments:16

Top GitHub Comments

1reaction

andschwacommented, Oct 6, 2021

I hope that nyc gets fixed for Windows and updated, I’d like to use it, but right now it’s not usable on Windows at all.

0reactions

oshercommented, Sep 19, 2021

any decision?

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