TemplateProcessor.test.ts

import { TemplateProcessor } from '@shared/visualServer/TemplateProcessor';

describe('TemplateProcessor', () => {
  let target: TemplateProcessor;

  beforeEach(() => {
    target = new TemplateProcessor();
  });

  describe('injectServiceData', () => {
    it('should replace the placeholder with data', () => {
      const html = 'let TEST_DATA = []; // {{ TEST_GRAPH_DATA }}';
      const data = '[1, 2, 3]';
      const result = target.injectServiceData(html, 'TEST', data);
      expect(result).toBe('let TEST_DATA = [1, 2, 3]; // {{ TEST_GRAPH_DATA }}');
    });

    it("should not replace if placeholder doesn't match exactly", () => {
      const html = 'let TEST_DATA = [1]; // {{ TEST_GRAPH_DATA }}';
      const data = '[2]';
      const result = target.injectServiceData(html, 'TEST', data);
      expect(result).toBe(html);
    });

    it('should handle multiple occurrences if global flag is used (it is in implementation)', () => {
      const html = 'let TEST_DATA = []; // {{ TEST_GRAPH_DATA }}\nlet TEST_DATA = []; // {{ TEST_GRAPH_DATA }}';
      const data = '[1]';
      const result = target.injectServiceData(html, 'TEST', data);
      expect(result).toBe('let TEST_DATA = [1]; // {{ TEST_GRAPH_DATA }}\nlet TEST_DATA = [1]; // {{ TEST_GRAPH_DATA }}');
    });
  });

  describe('injectGlobalDefinitions', () => {
    it('should inject definitions into let placeholder', () => {
      const html = 'let GLOBAL_DEFINITIONS = {}; // {{ GLOBAL_DEFINITIONS_DATA }}';
      const data = '{a:1}';
      const result = target.injectGlobalDefinitions(html, data);
      expect(result).toBe('let GLOBAL_DEFINITIONS = {a:1}; // {{ GLOBAL_DEFINITIONS_DATA }}');
    });

    it('should inject definitions into const placeholder', () => {
      const html = 'const GLOBAL_DEFINITIONS = {}; // {{ GLOBAL_DEFINITIONS_DATA }}';
      const data = '{b:2}';
      const result = target.injectGlobalDefinitions(html, data);
      expect(result).toBe('let GLOBAL_DEFINITIONS = {b:2}; // {{ GLOBAL_DEFINITIONS_DATA }}');
    });

    it('should handle missing comment part if regex allows', () => {
      const html = 'let GLOBAL_DEFINITIONS = {};';
      const data = '{c:3}';
      const result = target.injectGlobalDefinitions(html, data);
      expect(result).toBe('let GLOBAL_DEFINITIONS = {c:3}; // {{ GLOBAL_DEFINITIONS_DATA }}');
    });

    it('should not replace if already populated', () => {
      const html = 'let GLOBAL_DEFINITIONS = {existing:true};';
      const data = '{new:true}';
      const result = target.injectGlobalDefinitions(html, data);
      expect(result).toBe(html);
    });
  });
});