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README.md

Karma-FuseBox

Use FuseBox to preprocess files in Karma

Install

With npm

npm install --save-dev karma-fuse-box

With yarn

yarn add --dev karma-fuse-box

Usage

karma.conf.js

const path = require("path");

module.exports = config => {
  config.set({
    files: [
      // all files ending in "_test"
      { pattern: "test/*_test.js", watched: false },
      { pattern: "test/**/*_test.js", watched: false }
      // each file acts as entry point for the fusebox configuration
    ],

    preprocessors: {
      // add FuseBox as preprocessor
      "test/*_test.js": ["fusebox"],
      "test/**/*_test.js": ["fusebox"]
    },

    fusebox: {
      // FuseBox configuration
      homeDir: path.join(process.cwd(), "test/")
    },

    // for TypeScript
    mime: {
      "text/x-typescript": ["ts", "tsx"]
    }
  });
};

Alternative Usage

This configuration is more performant, but you cannot run single test anymore (only the complete suite).

The above configuration generates a FuseBox bundle for each test. For many test cases this can result in many big files.

The alternative configuration creates a single bundle with all test cases.

karma.conf.js

files: [
  // only specify one entry point
  // and require all tests in there
  'test/index_test.js'
],

preprocessors: {
  // add fusebox as preprocessor
  'test/index_test.js': [ 'fusebox' ]
},

// additional arithmetic instructions needed
// unlike WebPack FuseBox will not recognize files only by source code
fuseboxInstructions: '+ test/**_test.js',

test/index_test.js

// use fusebox runtime API to load spec files
FuseBox.import("./**_test");

Options

Full list of options you can specify in your karma.conf.js

fusebox

FuseBox configuration (fuse.js)

fuseboxInstructions

String with additional instructions for file bundling

License

MIT

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Use FuseBox to preprocess files in Karma.

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