Istanbuljs ignore a file on coverage report

[marcodsx]

Hi, I tried to test some mocha-chai-nyc feature to figure out how to use them for my work. I found a tutorial to understand mocha-chai on https://semaphoreci.com/community/tutorials/getting-started-with-node-js-and-mocha. I followed that tutorial and rebuild the app converter and test proposed by the tutorial.

You can find my project on https://github.com/marcodsx/converter-mocha-chai

It works and if you have nyc, chai and mocha installed globally you can clone repository and:

• start app/server.js by running "node app/server.js"
• run "mocha" and note that we have 6 working tests that pass.

You know if you run "nyc mocha" you have also the coverage report, I found the issue in the report.

It seems that a file in my project is ignored from report. In this case the file ignored is app/server.js
I expect that also that file should compare on report but not. I don't know if this is an issue or a limit. Could you please check and give me an answer?
Thanks & Happy Christmas 🎅
Marcods

Forensic Information

Operating System: I working on kubuntu 16.04
Environment Information:
v9.2.0
5.6.0
[email protected] /home/marcods/HIGECO/personal/progetti/nodetesting/converter/github/converter-mocha-chai
├─┬ [email protected]
│ ├── [email protected]
│ ├── [email protected]
│ ├─┬ [email protected]
│ │ └── [email protected] deduped
│ ├── [email protected]
│ ├── [email protected]
│ └── [email protected]
├─┬ [email protected]
│ ├─┬ [email protected]
│ │ ├── [email protected] deduped
│ │ └── [email protected]
│ ├── [email protected]
│ ├─┬ [email protected]
│ │ ├── [email protected]
│ │ ├── [email protected] deduped
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│ │ ├─┬ [email protected]
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[bcoe]

@marcodsx looking at your testing repo, I believe the expectation is that I would start the server in a separate process and then run the tests which interact with it? in this scenario, coverage will not be collected for server.js -- because it is running in a separate process that has not instrumented the code with coverage.

You can fix this! rather than starting the server separately, start the server in a before statement in your tests, and shut it down in an after statement; I do something similar here:

https://github.com/npm/oauth2-server-pg/blob/master/test/server.js#L17

although in restify rather than express.

This is similar to the problem that @SuperFun99 describes here I might pull together a tutorial for testing express and put it up on the website for folks to reference (the link to oauth2-server-pg should be a good starting point).

[JaKXz]

closing in favour of istanbuljs/istanbuljs.github.io#140