import { promises as fsp } from 'node:fs';
import { expect } from '../../../test-utils';
import { writeFile } from '../write-file';

describe('writes correctly to file', function () {
  it('should not add an extra line at the end of a pdf file', async function () {
    const pdfPath = 'test.pdf';
    await writeFile(pdfPath, 'testing123');
    const pdfContent = await fsp.readFile(pdfPath, { encoding: 'utf-8' });
    expect(pdfContent.slice(-1)).to.equal('3');
    await fsp.unlink(pdfPath);
  });

  it('should keep a new line at the end of a pdf file if in the content string', async function () {
    const pdfPath = 'test2.pdf';
    await writeFile(pdfPath, 'testing123\n');
    const pdfContent = await fsp.readFile(pdfPath, { encoding: 'utf-8' });
    expect(pdfContent.slice(-1)).to.equal('\n');
    await fsp.unlink(pdfPath);
  });

  it('should add a new line at the end of a js file', async function () {
    const pdfPath = 'test.js';
    await writeFile(pdfPath, 'testing123');
    const pdfContent = await fsp.readFile(pdfPath, { encoding: 'utf-8' });
    expect(pdfContent.slice(-1)).to.equal('\n');
    await fsp.unlink(pdfPath);
  });

  it('should not add a new line at the end of a js file if it ends with a new line', async function () {
    const pdfPath = 'test2.js';
    await writeFile(pdfPath, 'testing123\n');
    const pdfContent = await fsp.readFile(pdfPath, { encoding: 'utf-8' });
    expect(pdfContent).to.equal('testing123\n');
    await fsp.unlink(pdfPath);
  });
});