import fs from 'fs';
import path from 'path';

import { ast } from '../../src';
import { Program } from '../../src/ast/nodes';
import { loadYamlCases } from '../loaders/yaml';

const fixturesDir = path.resolve(__dirname, '..', 'fixtures');

describe('ast generation', () => {
  test('block.tlb can be parsed', () => {
    expect.hasAssertions();

    const input = fs.readFileSync(path.resolve(fixturesDir, 'tlb', 'block.tlb'), 'utf-8');
    const tree = ast(input);

    expect(tree).toBeInstanceOf(Program);
  });

  for (let caseDef of loadYamlCases(fixturesDir, 'ast', 'examples.yml')) {
    test(`Generated ast example: ${caseDef.case}`, () => {
      expect.hasAssertions();

      const tree = ast(caseDef.code);

      expect(tree).toBeInstanceOf(Program);
      expect(tree).toMatchSnapshot();
    });
  }
});