create-snippet/dist/modules/cache/cache.test.js

npx tool for generating code snippets

"use strict";
var __importDefault = (this && this.__importDefault) || function (mod) {
    return (mod && mod.__esModule) ? mod : { "default": mod };
};
Object.defineProperty(exports, "__esModule", { value: true });
const globals_1 = require("@jest/globals");
const fs_1 = __importDefault(require("fs"));
const path_1 = __importDefault(require("path"));
const cache_module_1 = require("./cache.module");
(0, globals_1.describe)('ModuleCache', () => {
    const cacheDir = path_1.default.join(__dirname, '..', '..', '__cache__');
    let cache;
    (0, globals_1.beforeAll)(() => {
        // Создаем временную директорию для тестового кэша
        if (!fs_1.default.existsSync(cacheDir)) {
            fs_1.default.mkdirSync(cacheDir);
        }
    });
    (0, globals_1.afterAll)(() => {
        // Удаляем тестовый кэш
        fs_1.default.rmdirSync(cacheDir, { recursive: true });
    });
    (0, globals_1.beforeEach)(() => {
        // Создаем экземпляр класса для каждого теста
        cache = new cache_module_1.ModuleCache();
    });
    (0, globals_1.afterEach)(() => {
        // Удаляем все файлы из тестового кэша после каждого теста
        fs_1.default.readdirSync(cacheDir).forEach((file) => {
            fs_1.default.unlinkSync(path_1.default.join(cacheDir, file));
        });
    });
    (0, globals_1.describe)('get', () => {
        (0, globals_1.test)('should return null for non-existing key', () => {
            (0, globals_1.expect)(cache.get('non-existing-key')).toBeNull();
        });
        (0, globals_1.test)('should return null for expired key', () => {
            cache.set('key', 'value', -1000);
            (0, globals_1.expect)(cache.get('key')).toBeNull();
        });
        (0, globals_1.test)('should return cached value for valid key', () => {
            cache.set('key', 'value', 1000);
            (0, globals_1.expect)(cache.get('key')).toEqual('value');
        });
    });
    (0, globals_1.describe)('set', () => {
        (0, globals_1.test)('should add new key-value pair to cache', () => {
            cache.set('key', 'value');
            (0, globals_1.expect)(cache.get('key')).toEqual(null);
        });
        (0, globals_1.test)('should overwrteste existing key-value pair in cache', () => {
            cache.set('key', 'old-value');
            cache.set('key', 'new-value');
            (0, globals_1.expect)(cache.get('key')).toEqual(null);
        });
        (0, globals_1.test)('should set expiration for key-value pair', () => {
            const expiration = 1000;
            cache.set('key', 'value', expiration);
            const filePath = path_1.default.join(cacheDir, 'key.json');
            const content = fs_1.default.readFileSync(filePath, 'utf-8');
            const { expiration: fileExpiration } = JSON.parse(content);
            (0, globals_1.expect)(fileExpiration).toBeGreaterThan(Date.now());
            (0, globals_1.expect)(fileExpiration).toBeLessThanOrEqual(Date.now() + expiration);
        });
    });
    (0, globals_1.describe)('delete', () => {
        (0, globals_1.test)('should remove key-value pair from cache', () => {
            cache.set('key', 'value');
            cache.delete('key');
            (0, globals_1.expect)(cache.get('key')).toBeNull();
        });
        (0, globals_1.test)('should do nothing for non-existing key', () => {
            cache.delete('non-existing-key');
            (0, globals_1.expect)(cache.get('non-existing-key')).toBeNull();
        });
    });
});