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karma.conf.js
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karma.conf.js
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/* eslint no-console: "off" */
const path = require('path');
const { createProxyMiddleware } = require('http-proxy-middleware');
const webpack = require('webpack');
const TEST_BACKEND = 'https://core.dev.collectionspace.org';
const getTestFiles = (config) => {
if (config.file) {
return config.file.split(',');
}
const defaultTestDirs = [
'test/specs',
'test/integration',
];
const testDirs = config.dir ? config.dir.split(',') : defaultTestDirs;
return testDirs.map((dir) => `${dir}/**/*.+(js|jsx)`);
};
module.exports = function karma(config) {
const localBrowsers = ['Chrome'];
const githubBrowsers = ['Chrome'];
let browsers;
if (process.env.GITHUB_ACTIONS) {
// This is a CI run on GitHub.
console.log('Running on GitHub.');
browsers = githubBrowsers;
} else {
// This is a local run.
console.log('Running locally.');
const localBrowsersEnv = process.env.KARMA_BROWSERS;
browsers = localBrowsersEnv ? localBrowsersEnv.split(',') : localBrowsers;
}
config.set({
browsers,
concurrency: 1,
files: getTestFiles(config),
frameworks: [
'mocha',
'chai',
'webpack',
],
reporters: [
'mocha',
'coverage',
],
client: {
mocha: {
timeout: 4000,
},
},
autoWatch: true,
singleRun: config.singleRun === 'true',
preprocessors: {
'test/**/*.js': [
'webpack',
'sourcemap',
],
},
webpack: {
mode: 'development',
module: {
rules: [
{
test: /\.js$/,
exclude: path.resolve(__dirname, 'node_modules'),
use: [
{
loader: 'babel-loader',
},
],
},
],
},
plugins: [
new webpack.DefinePlugin({
// Set the back end server to use in integration tests to this local Karma server.
// A middleware is installed to proxy cspace-services requests to the URL specified
// by TEST_BACKEND.
'globalThis.TEST_BACKEND': JSON.stringify('http://localhost:9876'),
}),
],
resolve: {
fallback: {
fs: false,
path: require.resolve('path-browserify'),
},
},
},
port: 9876,
colors: true,
// Code will have been instrumented via Babel and babel-plugin-istanbul
// when NODE_ENV is 'test' (see .babelrc).
coverageReporter: {
type: 'json',
dir: `coverage/${process.env.npm_lifecycle_event}`,
},
middleware: process.env.npm_lifecycle_event === 'test-browser-integration'
? ['proxy']
: [],
plugins: [
...config.plugins,
{
// A middleware that proxies cspace-services requests to the URL specified by TEST_BACKEND.
// This is used to avoid CORS issues when connecting to a CSpace server from an integration
// test running in a browser.
'middleware:proxy': ['factory', function create() {
return createProxyMiddleware({
target: TEST_BACKEND,
pathFilter: '/cspace-services',
changeOrigin: true,
headers: {
origin: TEST_BACKEND,
},
onProxyRes: (proxyRes) => {
// Prevent the browser from showing the login prompt.
// eslint-disable-next-line no-param-reassign
delete proxyRes.headers['www-authenticate'];
},
});
}],
},
],
});
};