test cases coverge coverage.Icov is empty

[ahmdsolmn]

I tried cloning and running test coverage but coverge.Icov is empty.

Steps to reproduce:

1. clone and npm install

2. npm run test:cov

   All test cases succeed but coverage looks like this in the terminal

----------|----------|----------|----------|----------|----------------|
File      |  % Stmts | % Branch |  % Funcs |  % Lines |Uncovered Lines |
----------|----------|----------|----------|----------|----------------|
All files |  Unknown |  Unknown |  Unknown |  Unknown |                |
----------|----------|----------|----------|----------|----------------|

and the coverage.Icov file is empty

[timdorr]

I haven't touched coverage in over a year. We should probably get it working again.

[ahmdsolmn]

if your run npm run test:cov returns unknown
but if you edit /src/utils/shallowEqual.js line 12 and add a semicolon at the end then rerun npm run test:cov shallowEqual.js shows in the coverage.

---

also if you edit src/utils/wrapActionCreators.js line 1 and add a semicolon at the end and then rerun npm run test:cov wrapActionCreators.js shows in the coverage.

---

Not sure what it means actually but maybe it will help you discover something

[IlyaRucavitcyn]

If nobody is working on that issue could I have a try during next few days? This issue seems a good one to start with:)

[timdorr]

Absolutely. It's a race to the PR! 😄

[IlyaRucavitcyn]

This days I've been working on the issue and for now I am stuck and perhaps need some help or advise.
For now I have managed to change config of the nyc (istanbul cli) as shown on the picture below:

and all the src folder files appear to be in the report but with some kind of strange coverage results

Current investigaton and nyc/babel/istanbul issues checking didn't point at the idea of what could have happened here.
Any ideas from anyone where to point the attention to?
Original changes can be found in the fork