For my project, I am incorporating ES6 syntax and testing my code with Karma. While I have successfully set up testing, I encountered an issue with the coverage report.
Instead of including the source code, the coverage report is highlighting spec files and webpack bundles.
I am also looking to share this coverage information with codeclimate.com.
This is the code snippet that has been successfully working for my configuration. If you want to check out the source code, you can find it here
Once executed, run the following command:
yarn test
If you open the generated index.html file in your browser, you will be able to view the coverage information.
// package.json
{
"scripts": {
"build": "webpack --config production.config.js",
"test": "karma start"
},
"devDependencies": {
"@babel/core": "^7.4.5",
"babel-loader": "^8.0.6",
"babel-plugin-istanbul": "^5.1.4",
"cross-env": "^5.2.0",
"html-webpack-plugin": "^3.2.0",
"jasmine-core": "^3.4.0",
"karma": "^4.1.0",
"karma-chrome-launcher": "^2.2.0",
"karma-coverage": "^1.1.2",
"karma-jasmine": "^2.0.1",
"karma-mocha-reporter": "^2.2.5",
"karma-webpack": "^4.0.2",
"webpack": "^4.35.0",
"webpack-cli": "^3.3.5"
}
}
// karma.conf.js
const webpackConfig = require("./test.config");
module.exports = function(config) {
config.set({
basePath: "",
frameworks: ["jasmine"],
files: ["src/app/**/*.js"],
exclude: [],
// `coverage` preprocessor not included
preprocessors: {
"src/app/**/*.js": ["webpack"]
},
webpack: webpackConfig,
reporters: ["mocha", "coverage"],
coverageReporter: {
type: process.env.TRAVIS ? "lcov" : 'html',
dir: "coverage",
subdir: '.'
},
port: 9876,
colors: true,
logLevel: config.LOG_INFO,
autoWatch: !process.env.TRAVIS,
browsers: ["ChromeHeadless"],
singleRun: process.env.TRAVIS,
concurrency: Infinity
});
};
// test.config.js
const config = {
module: {
rules: [
{
test: /\.(spec|test)\.js$/,
use: [
{
loader: "babel-loader"
}
]
},
{
test: /\.js$/,
exclude: /\.(spec|test)\.js$/,
use: [
{
loader: "babel-loader",
options: {
plugins: ["istanbul"]
}
}
]
}
]
},
mode: "development"
};
module.exports = config;
// .travis.yml
language: node_js
node_js:
- stable
addons:
chrome:
- stable
cache:
yarn: true
directories:
- node_modules
before_script:
- curl -L https://codeclimate.com/downloads/test-reporter/test-reporter-latest-linux-amd64 > ./cc-test-reporter
- chmod +x ./cc-test-reporter
- ./cc-test-reporter before-build
script:
- yarn test
after_script:
- ./cc-test-reporter after-build --exit-code $TRAVIS_TEST_RESULT
In order for this setup to work properly, make sure to set the CC_TEST_REPORTER_ID variable in your Travis settings https://i.stack.imgur.com/5s39P.png
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