text: const expect = require('chai').expect;
  const fs = require('mz/fs');
  const fileType = require('file-type');
  const {pdfPageSizes} = require('../PageSizes');
  const {splitPDF, combinePDF, PDFCombineError} = require('../SplitCombine');
  
  describe('Split & Combine', function () {
      describe('Split', function () {
          it('should split a single page PDF into one page', async function () {
              const pdf = await fs.readFile('test/portrait-singlepage.pdf');
              const pages = await splitPDF(pdf);
              // Check number of pages
              expect(pages.length).to.equal(1);
              // Check image type
              expect(fileType(pages[0]).ext).to.equal('pdf');
          });
          it('should split a multi-page PDF into multiple pages', async function () {
              const pdf = await fs.readFile('test/portrait-multipage.pdf');
              const pages = await splitPDF(pdf);
              // Check number of pages
              expect(pages.length).to.equal(3);
              // Check image type
              expect(fileType(pages[0]).ext).to.equal('pdf');
              expect(fileType(pages[1]).ext).to.equal('pdf');
              expect(fileType(pages[2]).ext).to.equal('pdf');
          });
      });
      describe('Combine', function () {
          it('should throw when trying to combine zero pages', async function () {
              combinePDF([]).then(() => {
                  throw new Error(`Didnt crash`);
              }).catch(() => {});
          });
          it('should combine one page into one page', async function () {
              const pdf = await fs.readFile('test/portrait-singlepage.pdf');
              const result = await combinePDF([pdf]);
              // Check number of pages
              const pageSizes = await pdfPageSizes(result);
              expect(pageSizes.length).to.equal(1);
              // Check image type
              expect(fileType(result).ext).to.equal('pdf');
          });
          it('should combine two page into one two page', async function () {
              const pdf = await fs.readFile('test/portrait-singlepage.pdf');
              const result = await combinePDF([pdf, pdf]);
              // Check number of pages
              const pageSizes = await pdfPageSizes(result);
              expect(pageSizes.length).to.equal(2);
              // Check image type
              expect(fileType(result).ext).to.equal('pdf');
          });
      });
  });
  