# How to run test with coverage
**URL:** https://discuss.elastic.co/t/how-to-run-test-with-coverage/241058
**Category:** Kibana
**Created:** [July 14, 2020, 6:01am UTC](https://discuss.elastic.co/t/how-to-run-test-with-coverage/241058 "2020-07-14T06:01:42Z")
**Posts on this page:** 3
**Page:** 1
### Author:  [@seraphjiang](https://discuss.elastic.co/u/seraphjiang)
#### Post date: [July 14, 2020, 6:01am UTC](https://discuss.elastic.co/t/how-to-run-test-with-coverage/241058/1 "2020-07-14T06:01:42Z")
tried to run yarn test:coverage, but failed
```auto
yarn test:coverage
yarn run v1.22.4
$ grunt test:coverage
Running "run:testCoverageServer" (run) task
Verifying property run.testCoverageServer exists in config...ERROR
>> Unable to process task.
Warning: Required config property "run.testCoverageServer" missing. Use --force to continue.
Aborted due to warnings.
error Command failed with exit code 3.
info Visit https://yarnpkg.com/en/docs/cli/run for documentation about this command.
```
I could not find any document and code related to run.testCoverageServer
how could I launch test with coverage?
---
### Author:  [@tiagocosta](https://discuss.elastic.co/u/tiagocosta)
#### Post date: [July 20, 2020, 8:25pm UTC](https://discuss.elastic.co/t/how-to-run-test-with-coverage/241058/2 "2020-07-20T20:25:04Z")
@seraphjiang you're not doing anything wrong. I've spotted a typo in our naming for the underlying grunt task. I'll open a PR to fix it!
Cheers
---
### Author:  [@system](https://discuss.elastic.co/u/system)
#### Post date: [August 17, 2020, 8:37pm UTC](https://discuss.elastic.co/t/how-to-run-test-with-coverage/241058/3 "2020-08-17T20:37:32Z")
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