als-layout/tests/keywords.test.js

HTML layout constructor with dynamic meta, styles, and scripts

const assert = require('assert');
const { describe, it, beforeEach } = require('node:test')
const Layout = require('../src/layout.js');
const { SingleNode } = require('als-document')

describe('Keywords tests', () => {
   let layout;

   beforeEach(() => {
      layout = new Layout();
   });

   it('should add new keywords to an existing meta tag', () => {
      layout.head.insert(2, new SingleNode('meta', { name: 'keywords', content: 'initial' }));
      const additionalKeywords = ['keyword1', 'keyword2'];
      layout.keywords(additionalKeywords);
      const expectedContent = 'initial,keyword1,keyword2';
      assert.strictEqual(layout.root.$('meta[name="keywords"]').getAttribute('content'), expectedContent, 'Existing keywords not updated correctly');
   });

   it('should not add duplicate keywords', () => {
      layout.head.insert(2, new SingleNode('meta', { name: 'keywords', content: 'keyword1,keyword2' }));
      const additionalKeywords = ['keyword2', 'keyword3'];
      layout.keywords(additionalKeywords);
      const expectedContent = 'keyword1,keyword2,keyword3';
      assert.strictEqual(layout.root.$('meta[name="keywords"]').getAttribute('content'), expectedContent, 'Duplicate keywords were added');
   });

   it('should handle keywords with leading or trailing spaces', () => {
      const messyKeywords = [' keyword1', 'keyword2 '];
      layout.keywords(messyKeywords);
      const expectedContent = 'keyword1,keyword2';
      assert.strictEqual(layout.root.$('meta[name="keywords"]').getAttribute('content'), expectedContent, 'Keywords with spaces not trimmed correctly');
   });

   it('should add keywords correctly', () => {
      const keywords = ['keyword1', 'keyword2'];
      layout.keywords(keywords);
      assert(layout.root.$('meta[name="keywords"]').getAttribute('content') === keywords.join(), 'Keywords not set correctly');
   });

   it('should handle empty keywords array', () => {
      layout.keywords([]);
      assert(!layout.root.$('meta[name="keywords"]'), 'Meta tag for empty keywords should not be created');
   });

});