Issue 4726 - Add tests for the element hiding emulation content script

README.md

 Adblock Plus core
 =================
 
 This repository contains the generic Adblock Plus code that's shared between
 platforms. This repository is not designed to be used directly, but instead to
 serve as a dependency for `adblockplus`, `adblockpluschrome` and
 `libadblockplus`.
 
 Running the unit tests
 ----------------------
 
+### Requirements
+
 In order to run the unit test suite you need
 [Node.js 6 or higher](https://nodejs.org/). Once Node.js is installed please run
 `npm install` in the repository directory in order to install the required
-dependencies. After that you can run `npm test` which will execute all tests
-in the `test` directory of the repository. You can also specify specific test
-files on the command line, e.g. `npm test test/synchronizer.js`.
+dependencies.
+
+### Running all tests
+
+`npm test` will run all tests in the `test` directory of the repository.
+
+### Node.js tests
+
+`npm run test-node` will only run the tests that work in a Node.js environment.
+
+You can specify specific test files on the command line, e.g.
+`npm run test-node test/synchronizer.js`.
+
+### Browser tests
+
+`npm run test-browser` will only run the tests that require a browser
+environment.
+
+You can run these tests in a real browser by opening `test/browser/index.html`.