Flip the order of all pages in your document, making the last page the first.
- ${createFileInputHTML()} + ${createFileInputHTML({ multiple: true, accept: 'application/pdf', showControls: true })} `, diff --git a/src/tests/pdf-tools.test.ts b/src/tests/pdf-tools.test.ts index a5436d8..6370e75 100644 --- a/src/tests/pdf-tools.test.ts +++ b/src/tests/pdf-tools.test.ts @@ -19,7 +19,7 @@ describe('Tool Configuration Arrays', () => { it('should have the correct number of tools', () => { // This acts as a snapshot test to catch unexpected additions/removals. - expect(singlePdfLoadTools).toHaveLength(40); + expect(singlePdfLoadTools).toHaveLength(39); }); it('should not contain any duplicate tools', () => { @@ -61,7 +61,7 @@ describe('Tool Configuration Arrays', () => { }); it('should have the correct number of tools', () => { - expect(multiFileTools).toHaveLength(12); + expect(multiFileTools).toHaveLength(13); }); it('should not contain any duplicate tools', () => { diff --git a/src/tests/reversePages.multi.test.ts b/src/tests/reversePages.multi.test.ts new file mode 100644 index 0000000..c25bce1 --- /dev/null +++ b/src/tests/reversePages.multi.test.ts @@ -0,0 +1,114 @@ +import { describe, it, expect, vi, beforeEach, afterEach } from 'vitest'; +import { PDFDocument as PDFLibDocument } from 'pdf-lib'; +import { reversePages } from '../js/logic/reverse-pages'; +import { state } from '../js/state'; +import * as helpers from '../js/utils/helpers'; +import * as ui from '../js/ui'; +import JSZip from 'jszip'; + +vi.mock('../js/ui', () => ({ + showLoader: vi.fn(), + hideLoader: vi.fn(), + showAlert: vi.fn(), +})); + +vi.mock('../js/utils/helpers', () => ({ + downloadFile: vi.fn(), +})); + +vi.mock('pdf-lib', () => ({ + PDFDocument: { + create: vi.fn(), + load: vi.fn().mockResolvedValue({ + getPageCount: vi.fn(() => 2), + copyPages: vi.fn((_, indices) => + Promise.resolve(indices.map((i) => ({ page: `page-${i}` }))) + ), + }), + }, +})); + +describe('reversePages - multi PDF support', () => { + let mockNewDoc: any; + + beforeEach(() => { + state.files = []; // ✅ now using files, not pdfDocs + + mockNewDoc = { + copyPages: vi.fn((doc: any, indices: number[]) => + Promise.resolve(indices.map((i: number) => ({ page: `page-${i}` }))) + ), + addPage: vi.fn(), + save: vi.fn(() => Promise.resolve(new Uint8Array([1, 2, 3]))), + }; + vi.mocked(PDFLibDocument.create).mockResolvedValue(mockNewDoc); + + vi.mocked(helpers.downloadFile).mockImplementation(() => {}); + vi.mocked(ui.showLoader).mockImplementation(() => {}); + vi.mocked(ui.hideLoader).mockImplementation(() => {}); + vi.mocked(ui.showAlert).mockImplementation(() => {}); + }); + + afterEach(() => { + vi.clearAllMocks(); + }); + + it('should reverse pages for multiple PDFs and create a zip', async () => { + const mockFile = (name: string) => ({ + name, + type: 'application/pdf', + arrayBuffer: vi.fn().mockResolvedValue(new ArrayBuffer(8)), + }); + + state.files = [mockFile('a.pdf'), mockFile('b.pdf')]; // ✅ now matches function + + await reversePages(); + + expect(helpers.downloadFile).toHaveBeenCalledWith(expect.any(Blob), 'reversed_pdfs.zip'); + expect(mockNewDoc.copyPages).toHaveBeenCalledTimes(2); + expect(mockNewDoc.addPage).toHaveBeenCalled(); + expect(mockNewDoc.save).toHaveBeenCalledTimes(2); + }); + + it('should handle empty PDF list gracefully', async () => { + state.files = []; + await reversePages(); + expect(ui.showAlert).toHaveBeenCalledWith('Error', 'PDF not loaded.'); + }); + + it('should handle PDF creation errors', async () => { + vi.mocked(PDFLibDocument.create).mockRejectedValue(new Error('Create failed')); + state.files = [ + { name: 'x.pdf', type: 'application/pdf', arrayBuffer: vi.fn().mockResolvedValue(new ArrayBuffer(8)) }, + ]; + + await reversePages(); + + expect(ui.showAlert).toHaveBeenCalledWith('Error', 'Could not reverse the PDF pages.'); + expect(ui.hideLoader).toHaveBeenCalled(); + }); + + it('should handle PDF processing errors', async () => { + mockNewDoc.copyPages.mockRejectedValue(new Error('Copy failed')); + state.files = [ + { name: 'y.pdf', type: 'application/pdf', arrayBuffer: vi.fn().mockResolvedValue(new ArrayBuffer(8)) }, + ]; + + await reversePages(); + + expect(ui.showAlert).toHaveBeenCalledWith('Error', 'Could not reverse the PDF pages.'); + expect(ui.hideLoader).toHaveBeenCalled(); + }); + + it('should handle save errors', async () => { + mockNewDoc.save.mockRejectedValue(new Error('Save failed')); + state.files = [ + { name: 'z.pdf', type: 'application/pdf', arrayBuffer: vi.fn().mockResolvedValue(new ArrayBuffer(8)) }, + ]; + + await reversePages(); + + expect(ui.showAlert).toHaveBeenCalledWith('Error', 'Could not reverse the PDF pages.'); + expect(ui.hideLoader).toHaveBeenCalled(); + }); +}); \ No newline at end of file