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import hljs from 'highlight.js/lib/core';
import languageLoader from '~/content_editor/services/highlight_js_language_loader';
import { registerPlugins } from '~/vue_shared/components/source_viewer/plugins/index';
import { highlight } from '~/vue_shared/components/source_viewer/workers/highlight_utils';
jest.mock('highlight.js/lib/core', () => ({
highlight: jest.fn().mockReturnValue({}),
registerLanguage: jest.fn(),
}));
jest.mock('~/content_editor/services/highlight_js_language_loader', () => ({
javascript: jest.fn().mockReturnValue({ default: jest.fn() }),
}));
jest.mock('~/vue_shared/components/source_viewer/plugins/index', () => ({
registerPlugins: jest.fn(),
}));
const fileType = 'text';
const content = 'function test() { return true };';
const language = 'javascript';
describe('Highlight utility', () => {
beforeEach(() => highlight(fileType, content, language));
it('loads the language', () => {
expect(languageLoader.javascript).toHaveBeenCalled();
});
it('registers the plugins', () => {
expect(registerPlugins).toHaveBeenCalled();
});
it('registers the language', () => {
expect(hljs.registerLanguage).toHaveBeenCalledWith(
language,
languageLoader[language]().default,
);
});
it('highlights the content', () => {
expect(hljs.highlight).toHaveBeenCalledWith(content, { language });
});
});
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