javascript.md

id	javascript
title	Merge Unit and Keploy Test Coverage Data
sidebar_label	Javascript
tags	javascript js node npm coverage
keywords	coverage Jest Javascript Mongo Ava Intern mocha IoT.js tap Typescript

import ProductTier from '@site/src/components/ProductTier';

🛠️ Language Specific Requirements

Programming Language	Prerequisites
javascript	nyc

Usage

Update package file

Update the package.json file that runs the application:

  "scripts": {
    //other scripts
    "test": "jest --coverage --collectCoverageFrom='src/**/*.{js,jsx}'",
    "coverage:merge": "mkdir -p ./coverage && nyc merge ./coverage .nyc_output/out.json",
    "coverage:report": "nyc report --reporter=lcov --reporter=text",
    //other scripts
  }

Install nyc:

npm i nyc

In the test script, the --coverage flag triggers report generation for Jest. For other testing frameworks like Mocha, Intern, or Tap, you will need to use their respective coverage tools.

Run keploy test command:

Once it has been done, run keploy test command:

keploy test -c "your_application_command"

After successful execution of this command, A coverage report would be generated inside the test-run folder of keploy/reports.

keploy
├── reports
│   └── test-run-0
│       ├── coverage.yaml
│       └── test-set-0-report.yaml
└── test-set-0
    ├── mocks.yaml
    └── tests
        ├── test-1.yaml
        └── test-2.yaml

To generate coverage report for your unit tests, Run:

npm test

To merge coverage data of unit tests with keploy tests, Run:

npm run coverage:merge

To get coverage related information for merged coverage data, Run:

npm run coverage:report