als-path-tree/tests/file.test.js

A Node.js library for managing a virtual file system structure, offering functionalities for file and directory operations with a shared storage system.

const { describe, it, beforeEach } = require('node:test');
const assert = require('node:assert');
const File = require('../lib/file');
const Directory = require('../lib/directory');

describe('File', () => {
    let rootDir;

    beforeEach(() => {
        rootDir = new Directory('root');
    });

    it('creates a file with correct metadata', () => {
        const file = rootDir.addFile('file.txt', { size: 512 }, 'test content');
        assert.strictEqual(file.meta.size, 512);
        assert.strictEqual(file.content, 'test content');
    });

    it('saves new content to a file', () => {
        const file = rootDir.addFile('file.txt', { size: 512 }, 'test content');
        file.save('updated content');
        assert.strictEqual(file.content, 'updated content');
        assert.strictEqual(file.meta.size, Buffer.byteLength('updated content'));
    });

    it('deletes a file from its parent directory', () => {
        const file = rootDir.addFile('file.txt', { size: 512 }, 'test content');
        file.delete();
        assert.strictEqual(rootDir.files['file.txt'], undefined);
    });

    it('copies a file to another location', () => {
        const file = rootDir.addFile('file.txt', { size: 512 }, 'test content');
        file.copyTo('copiedFile.txt');
        const copiedFile = rootDir.getItem('copiedFile.txt');
        assert.strictEqual(copiedFile.content, 'test content');
    });

    it('moves a file to same location (rename with move)', () => {
        const file = rootDir.addFile('file.txt', { size: 512 }, 'test content');
        file.moveTo('movedFile.txt')
        assert.strictEqual(rootDir.files['file.txt'], undefined);
        assert.strictEqual(rootDir.getItem('movedFile.txt'), file);
    });

    it('parses JSON content correctly', () => {
        const jsonData = JSON.stringify({ key: 'value' });
        const file = rootDir.addFile('file.json', {}, jsonData);
        assert.deepStrictEqual(file.json, { key: 'value' });
    });

    it('throws an error for invalid JSON content', () => {
        const file = rootDir.addFile('file.json', {}, 'invalid json');
        assert.throws(() => file.json, Error);
    });

    it('Saving file with no string or buffer', () => {
        const file = rootDir.addFile('test.txt', {}, 'test');
        assert(file.content === 'test')
        file.save(undefined)
        assert(file.content === null)
        file.save(null)
        assert(file.content === null)
        file.save({})
        assert(file.content === null)
    })
});