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karma.conf.js
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karma.conf.js
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const istanbul = require('rollup-plugin-istanbul');
const json = require('@rollup/plugin-json');
const resolve = require('rollup-plugin-node-resolve');
const builds = require('./rollup.config');
const yargs = require('yargs');
const env = process.env.NODE_ENV;
module.exports = function(karma) {
const args = yargs
.option('verbose', {default: false})
.argv;
// Use the same rollup config as our dist files: when debugging (--watch),
// we will prefer the unminified build which is easier to browse and works
// better with source mapping. In other cases, pick the minified build to
// make sure that the minification process (terser) doesn't break anything.
const regex = karma.autoWatch ? /\.js$/ : /\.min\.js$/;
const build = builds.filter(v => v.output.file.match(regex))[0];
if (env === 'test') {
build.plugins = [
json(),
resolve(),
istanbul({exclude: ['node_modules/**/*.js', 'package.json']})
];
}
karma.set({
frameworks: ['jasmine'],
reporters: ['spec', 'kjhtml'],
browsers: (args.browsers || 'chrome,firefox').split(','),
logLevel: karma.LOG_INFO,
client: {
jasmine: {
failFast: !!karma.autoWatch
}
},
// Explicitly disable hardware acceleration to make image
// diff more stable when ran on Travis and dev machine.
// https://github.com/chartjs/Chart.js/pull/5629
customLaunchers: {
chrome: {
base: 'Chrome',
flags: [
'--disable-accelerated-2d-canvas'
]
},
firefox: {
base: 'Firefox',
prefs: {
'layers.acceleration.disabled': true
}
}
},
files: [
{pattern: 'test/fixtures/**/*.js', included: false},
{pattern: 'test/fixtures/**/*.json', included: false},
{pattern: 'test/fixtures/**/*.png', included: false},
{pattern: 'node_modules/chart.js/dist/chart.umd.js'},
{pattern: 'node_modules/hammer-simulator/index.js'},
{pattern: 'node_modules/hammerjs/hammer.js'},
{pattern: 'node_modules/chartjs-adapter-date-fns/dist/chartjs-adapter-date-fns.bundle.js'},
{pattern: 'test/index.js'},
{pattern: 'src/index.js'},
{pattern: 'test/specs/**/*.js'}
],
preprocessors: {
'test/index.js': ['rollup'],
'src/index.js': ['sources']
},
rollupPreprocessor: {
plugins: [
json(),
resolve(),
],
external: [
'chart.js'
],
output: {
name: 'test',
format: 'umd',
globals: {
'chart.js': 'Chart'
}
}
},
customPreprocessors: {
fixtures: {
base: 'rollup',
options: {
output: {
format: 'iife',
name: 'fixture'
}
}
},
sources: {
base: 'rollup',
options: build
}
},
// These settings deal with browser disconnects. We had seen test flakiness from Firefox
// [Firefox 56.0.0 (Linux 0.0.0)]: Disconnected (1 times), because no message in 10000 ms.
// https://github.com/jasmine/jasmine/issues/1327#issuecomment-332939551
browserDisconnectTolerance: 3
});
if (env === 'test') {
karma.reporters.push('coverage');
karma.coverageReporter = {
dir: 'coverage/',
reporters: [
{type: 'html', subdir: 'html'},
{type: 'lcovonly', subdir: (browser) => browser.toLowerCase().split(/[ /-]/)[0]}
]
};
}
};