71 lines
2.2 KiB
TypeScript
71 lines
2.2 KiB
TypeScript
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import { test } from 'node:test';
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import assert from 'node:assert/strict';
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import { filesFromEntries } from './fileEntries';
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const fileEntry = (name: string): FileSystemFileEntry =>
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({
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isFile: true,
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isDirectory: false,
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name,
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file: (success: (file: File) => void) => {
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success(new File(['x'], name, { type: 'text/plain' }));
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},
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}) as unknown as FileSystemFileEntry;
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/**
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* A directory whose reader yields its children in several batches (mirroring
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* Chromium's `readEntries`, which caps each call) and finally an empty batch.
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*/
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const dirEntry = (name: string, children: FileSystemEntry[]): FileSystemDirectoryEntry => {
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const batches = [children.slice(0, 1), children.slice(1), [] as FileSystemEntry[]];
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return {
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isFile: false,
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isDirectory: true,
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name,
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createReader: () => {
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let call = 0;
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return {
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readEntries: (success: (entries: FileSystemEntry[]) => void) => {
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const batch = batches[call] ?? [];
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call += 1;
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success(batch);
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},
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} as unknown as FileSystemDirectoryReader;
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},
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} as unknown as FileSystemDirectoryEntry;
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};
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test('filesFromEntries flattens nested folders and prefixes relative paths', async () => {
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const entries: FileSystemEntry[] = [
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fileEntry('top.txt'),
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dirEntry('photos', [
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fileEntry('a.jpg'),
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dirEntry('2024', [fileEntry('b.jpg'), fileEntry('c.jpg')]),
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]),
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];
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const files = await filesFromEntries(entries);
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const names = files.map((f) => f.name).sort();
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assert.deepEqual(names, ['photos/2024/b.jpg', 'photos/2024/c.jpg', 'photos/a.jpg', 'top.txt']);
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});
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test('filesFromEntries reads directory entries in batches until empty', async () => {
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const entries: FileSystemEntry[] = [
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dirEntry('docs', [fileEntry('one.txt'), fileEntry('two.txt')]),
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];
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const files = await filesFromEntries(entries);
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assert.equal(files.length, 2);
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});
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test('filesFromEntries respects the maxFiles cap', async () => {
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const entries: FileSystemEntry[] = [
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dirEntry('many', [fileEntry('a.txt'), fileEntry('b.txt')]),
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fileEntry('c.txt'),
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];
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const files = await filesFromEntries(entries, 2);
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assert.equal(files.length, 2);
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});
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