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Outline.spec.tsx
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Outline.spec.tsx
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import { beforeAll, describe, expect, it } from 'vitest';
import { createRef } from 'react';
import { render, screen } from '@testing-library/react';
import { pdfjs } from './index.test.js';
import Outline from './Outline.js';
import failingPdf from '../../../__mocks__/_failing_pdf.js';
import { loadPDF, makeAsyncCallback, muteConsole, restoreConsole } from '../../../test-utils.js';
import DocumentContext from './DocumentContext.js';
import type { PDFDocumentProxy } from 'pdfjs-dist';
import type { DocumentContextType } from './shared/types.js';
type PDFOutline = Awaited<ReturnType<PDFDocumentProxy['getOutline']>>;
const pdfFile = loadPDF('./../../__mocks__/_pdf.pdf');
const pdfFile2 = loadPDF('./../../__mocks__/_pdf2.pdf');
function renderWithContext(children: React.ReactNode, context: Partial<DocumentContextType>) {
const { rerender, ...otherResult } = render(
<DocumentContext.Provider value={context as DocumentContextType}>
{children}
</DocumentContext.Provider>,
);
return {
...otherResult,
rerender: (
nextChildren: React.ReactNode,
nextContext: Partial<DocumentContextType> = context,
) =>
rerender(
<DocumentContext.Provider value={nextContext as DocumentContextType}>
{nextChildren}
</DocumentContext.Provider>,
),
};
}
describe('Outline', () => {
// Loaded PDF file
let pdf: PDFDocumentProxy;
let pdf2: PDFDocumentProxy;
// Object with basic loaded outline information that shall match after successful loading
let desiredLoadedOutline: PDFOutline;
let desiredLoadedOutline2: PDFOutline;
beforeAll(async () => {
pdf = await pdfjs.getDocument({ data: pdfFile.arrayBuffer }).promise;
pdf2 = await pdfjs.getDocument({ data: pdfFile2.arrayBuffer }).promise;
desiredLoadedOutline = await pdf.getOutline();
desiredLoadedOutline2 = await pdf2.getOutline();
});
describe('loading', () => {
it('loads an outline and calls onLoadSuccess callback properly when placed inside Document', async () => {
const { func: onLoadSuccess, promise: onLoadSuccessPromise } = makeAsyncCallback();
renderWithContext(<Outline onLoadSuccess={onLoadSuccess} />, { pdf });
expect.assertions(1);
await expect(onLoadSuccessPromise).resolves.toMatchObject([desiredLoadedOutline]);
});
it('loads an outline and calls onLoadSuccess callback properly when pdf prop is passed', async () => {
const { func: onLoadSuccess, promise: onLoadSuccessPromise } = makeAsyncCallback();
render(<Outline onLoadSuccess={onLoadSuccess} pdf={pdf} />);
expect.assertions(1);
await expect(onLoadSuccessPromise).resolves.toMatchObject([desiredLoadedOutline]);
});
it('calls onLoadError when failed to load an outline', async () => {
const { func: onLoadError, promise: onLoadErrorPromise } = makeAsyncCallback();
muteConsole();
renderWithContext(<Outline onLoadError={onLoadError} />, { pdf: failingPdf });
expect.assertions(1);
await expect(onLoadErrorPromise).resolves.toMatchObject([expect.any(Error)]);
restoreConsole();
});
it('replaces an outline properly when pdf is changed', async () => {
const { func: onLoadSuccess, promise: onLoadSuccessPromise } = makeAsyncCallback();
const { rerender } = renderWithContext(<Outline onLoadSuccess={onLoadSuccess} />, { pdf });
expect.assertions(2);
await expect(onLoadSuccessPromise).resolves.toMatchObject([desiredLoadedOutline]);
const { func: onLoadSuccess2, promise: onLoadSuccessPromise2 } = makeAsyncCallback();
rerender(<Outline onLoadSuccess={onLoadSuccess2} />, { pdf: pdf2 });
// It would have been .toMatchObject if not for the fact _pdf2.pdf has no outline
await expect(onLoadSuccessPromise2).resolves.toMatchObject([desiredLoadedOutline2]);
});
it('throws an error when placed outside Document without pdf prop passed', () => {
muteConsole();
expect(() => render(<Outline />)).toThrow();
restoreConsole();
});
});
describe('rendering', () => {
it('applies className to its wrapper when given a string', async () => {
const { func: onLoadSuccess, promise: onLoadSuccessPromise } = makeAsyncCallback();
const className = 'testClassName';
const { container } = renderWithContext(
<Outline className={className} onLoadSuccess={onLoadSuccess} />,
{ pdf },
);
expect.assertions(1);
await onLoadSuccessPromise;
const wrapper = container.querySelector('.react-pdf__Outline');
expect(wrapper).toHaveClass(className);
});
it('passes container element to inputRef properly', async () => {
const { func: onLoadSuccess, promise: onLoadSuccessPromise } = makeAsyncCallback();
const inputRef = createRef<HTMLDivElement>();
renderWithContext(<Outline inputRef={inputRef} onLoadSuccess={onLoadSuccess} />, { pdf });
expect.assertions(1);
await onLoadSuccessPromise;
expect(inputRef.current).toBeInstanceOf(HTMLDivElement);
});
it('renders OutlineItem components properly', async () => {
const { func: onLoadSuccess, promise: onLoadSuccessPromise } = makeAsyncCallback();
renderWithContext(<Outline onLoadSuccess={onLoadSuccess} />, { pdf });
expect.assertions(1);
await onLoadSuccessPromise;
const items = screen.getAllByRole('listitem');
expect(items).toHaveLength(5);
});
});
});