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feat: add comprehensive templates for TemplateJson covering README examples and real-life scenarios
Co-authored-by: streamich <9773803+streamich@users.noreply.github.com>
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‎src/__demos__/templates-demo.ts‎

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import {TemplateJson} from '../structured/TemplateJson';
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import * as templates from '../structured/templates';
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console.log('🎲 JSON Random Template Examples\n');
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console.log('📧 Email addresses:');
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for (let i = 0; i < 3; i++) {
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const email = TemplateJson.gen(['str', templates.tokenEmail]);
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console.log(` ${email}`);
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}
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console.log('\n📞 Phone numbers:');
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for (let i = 0; i < 3; i++) {
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const phone = TemplateJson.gen(['str', templates.tokenPhone]);
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console.log(` ${phone}`);
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}
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console.log('\n🏷️ Product codes:');
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for (let i = 0; i < 3; i++) {
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const code = TemplateJson.gen(['str', templates.tokenProductCode]);
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console.log(` ${code}`);
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}
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console.log('\n👤 User profile:');
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const user = TemplateJson.gen(templates.userProfile);
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console.log(JSON.stringify(user, null, 2));
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console.log('\n🛒 E-commerce product:');
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const product = TemplateJson.gen(templates.product);
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console.log(JSON.stringify(product, null, 2));
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console.log('\n📋 Order:');
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const order = TemplateJson.gen(templates.order);
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console.log(JSON.stringify(order, null, 2));
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console.log('\n🌐 API Response:');
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const apiResponse = TemplateJson.gen(templates.apiResponse);
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console.log(JSON.stringify(apiResponse, null, 2));
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console.log('\n🏥 Patient record:');
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const patient = TemplateJson.gen(templates.patient);
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console.log(JSON.stringify(patient, null, 2));
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console.log('\n📊 IoT Sensor reading:');
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const sensor = TemplateJson.gen(templates.sensorReading);
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console.log(JSON.stringify(sensor, null, 2));
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console.log('\n🌳 Tree structure (recursive):');
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const tree = TemplateJson.gen(templates.tree());
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console.log(JSON.stringify(tree, null, 2));
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console.log('\n🔀 Mixed types (or template):');
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for (let i = 0; i < 5; i++) {
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const mixed = TemplateJson.gen(templates.mixedTypes);
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console.log(` ${typeof mixed}: ${JSON.stringify(mixed)}`);
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}
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console.log('\n🎯 Edge cases:');
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const empty = TemplateJson.gen(templates.emptyStructures);
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console.log(JSON.stringify(empty, null, 2));
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console.log('\n📏 Large numbers:');
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const large = TemplateJson.gen(templates.largeNumbers);
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console.log(JSON.stringify(large, null, 2));

‎src/structured/__tests__/templates.spec.ts‎

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import {resetMathRandom} from '../../__tests__/setup';
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import {deterministic} from '../../util';
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import {TemplateJson} from '../TemplateJson';
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import * as templates from '../templates';
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describe('Template Examples', () => {
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describe('String Pattern Templates', () => {
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test('generates email addresses', () => {
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deterministic(123, () => {
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const email = TemplateJson.gen(['str', templates.tokenEmail]) as string;
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expect(typeof email).toBe('string');
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expect(email).toContain('@');
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expect(email.length).toBeGreaterThan(5);
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});
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});
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test('generates phone numbers', () => {
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deterministic(456, () => {
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const phone = TemplateJson.gen(['str', templates.tokenPhone]) as string;
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expect(typeof phone).toBe('string');
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expect(phone).toMatch(/^\+1-\d{3}-\d{3}-\d{4}$/);
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});
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});
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test('generates product codes', () => {
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deterministic(789, () => {
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const code = TemplateJson.gen(['str', templates.tokenProductCode]) as string;
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expect(typeof code).toBe('string');
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expect(code).toMatch(/^(PRD|ITM|SKU)-[A-Z]{2}\d{6}$/);
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});
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});
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test('generates URLs', () => {
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deterministic(101, () => {
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const url = TemplateJson.gen(['str', templates.tokenUrl]) as string;
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expect(typeof url).toBe('string');
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expect(url).toMatch(/^https:\/\/.*\.(com|org|net|io)/);
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});
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});
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});
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describe('User Profile Templates', () => {
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test('generates user profile with all required fields', () => {
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deterministic(202, () => {
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const user = TemplateJson.gen(templates.userProfile) as any;
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expect(user).toHaveProperty('id');
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expect(user).toHaveProperty('username');
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expect(user).toHaveProperty('email');
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expect(user).toHaveProperty('age');
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expect(user).toHaveProperty('isActive');
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expect(user).toHaveProperty('profile');
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expect(typeof user.id).toBe('number');
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expect(typeof user.username).toBe('string');
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expect(typeof user.email).toBe('string');
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expect(typeof user.age).toBe('number');
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expect(typeof user.isActive).toBe('boolean');
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expect(user.age).toBeGreaterThanOrEqual(18);
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expect(user.age).toBeLessThanOrEqual(120);
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});
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});
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test('generates basic user with required fields', () => {
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deterministic(303, () => {
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const user = TemplateJson.gen(templates.userBasic) as any;
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expect(user).toHaveProperty('id');
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expect(user).toHaveProperty('name');
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expect(user).toHaveProperty('active');
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expect(typeof user.id).toBe('number');
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expect(typeof user.name).toBe('string');
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expect(typeof user.active).toBe('boolean');
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expect(user.name).toContain(' '); // Should have first and last name
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});
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});
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});
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describe('API Response Templates', () => {
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test('generates API response with correct structure', () => {
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deterministic(404, () => {
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const response = TemplateJson.gen(templates.apiResponse) as any;
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expect(response).toHaveProperty('status');
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expect(response).toHaveProperty('timestamp');
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expect(response).toHaveProperty('data');
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expect(['success', 'error']).toContain(response.status);
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expect(typeof response.timestamp).toBe('number');
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expect(Array.isArray(response.data)).toBe(true);
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});
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});
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});
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describe('E-commerce Templates', () => {
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test('generates product with all fields', () => {
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deterministic(505, () => {
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const product = TemplateJson.gen(templates.product) as any;
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expect(product).toHaveProperty('id');
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expect(product).toHaveProperty('name');
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expect(product).toHaveProperty('price');
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expect(product).toHaveProperty('currency');
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expect(product).toHaveProperty('category');
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expect(product).toHaveProperty('tags');
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expect(product).toHaveProperty('inventory');
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expect(product).toHaveProperty('rating');
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expect(product).toHaveProperty('reviews');
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expect(typeof product.id).toBe('string');
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expect(product.id).toMatch(/^prod_\d{8}$/);
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expect(typeof product.price).toBe('number');
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expect(product.price).toBeGreaterThanOrEqual(9.99);
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expect(Array.isArray(product.tags)).toBe(true);
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expect(product.inventory).toHaveProperty('stock');
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expect(product.rating).toBeGreaterThanOrEqual(1.0);
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expect(product.rating).toBeLessThanOrEqual(5.0);
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});
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});
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test('generates order with items', () => {
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deterministic(606, () => {
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const order = TemplateJson.gen(templates.order) as any;
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expect(order).toHaveProperty('orderId');
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expect(order).toHaveProperty('customerId');
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expect(order).toHaveProperty('items');
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expect(order).toHaveProperty('total');
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expect(order).toHaveProperty('status');
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expect(order).toHaveProperty('shippingAddress');
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expect(order.orderId).toMatch(/^ORD-\d{10}$/);
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expect(order.customerId).toMatch(/^CUST-[A-Z]{3}\d{6}$/);
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expect(Array.isArray(order.items)).toBe(true);
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expect(order.items.length).toBeGreaterThan(0);
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expect(order.shippingAddress).toHaveProperty('street');
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expect(order.shippingAddress).toHaveProperty('city');
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expect(order.shippingAddress).toHaveProperty('state');
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expect(order.shippingAddress).toHaveProperty('zipCode');
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});
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});
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});
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describe('Recursive Templates', () => {
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test('generates tree structure', () => {
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deterministic(707, () => {
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const tree = TemplateJson.gen(templates.tree()) as any;
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expect(tree).toHaveProperty('value');
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expect(typeof tree.value).toBe('number');
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// Tree may or may not have left/right children due to probability
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});
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});
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test('generates comment thread', () => {
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deterministic(808, () => {
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const comment = TemplateJson.gen(templates.comment()) as any;
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expect(comment).toHaveProperty('id');
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expect(comment).toHaveProperty('text');
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expect(comment).toHaveProperty('author');
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expect(typeof comment.id).toBe('number');
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expect(typeof comment.text).toBe('string');
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expect(typeof comment.author).toBe('string');
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// Replies may or may not exist due to probability
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});
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});
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});
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describe('IoT & Sensor Templates', () => {
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test('generates sensor reading', () => {
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deterministic(909, () => {
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const reading = TemplateJson.gen(templates.sensorReading) as any;
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expect(reading).toHaveProperty('sensorId');
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expect(reading).toHaveProperty('deviceType');
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expect(reading).toHaveProperty('value');
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expect(reading).toHaveProperty('unit');
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expect(reading).toHaveProperty('timestamp');
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expect(reading).toHaveProperty('location');
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expect(reading).toHaveProperty('status');
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expect(reading.sensorId).toMatch(/^sensor_[A-Z]{2}\d{6}$/);
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expect(typeof reading.value).toBe('number');
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expect(reading.value).toBeGreaterThanOrEqual(-50);
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expect(reading.value).toBeLessThanOrEqual(150);
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expect(reading.location).toHaveProperty('room');
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expect(reading.location).toHaveProperty('floor');
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});
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});
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});
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describe('Medical Templates', () => {
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test('generates patient record', () => {
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deterministic(1010, () => {
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const patient = TemplateJson.gen(templates.patient) as any;
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expect(patient).toHaveProperty('patientId');
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expect(patient).toHaveProperty('firstName');
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expect(patient).toHaveProperty('lastName');
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expect(patient).toHaveProperty('dateOfBirth');
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expect(patient).toHaveProperty('gender');
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expect(patient).toHaveProperty('bloodType');
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expect(patient).toHaveProperty('allergies');
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expect(patient).toHaveProperty('emergencyContact');
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expect(patient.patientId).toMatch(/^PAT-\d{8}$/);
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expect(typeof patient.firstName).toBe('string');
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expect(typeof patient.lastName).toBe('string');
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expect(Array.isArray(patient.allergies)).toBe(true);
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expect(patient.emergencyContact).toHaveProperty('name');
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expect(patient.emergencyContact).toHaveProperty('relationship');
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expect(patient.emergencyContact).toHaveProperty('phone');
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});
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});
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});
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describe('Edge Case Templates', () => {
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test('generates empty structures', () => {
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const empty = TemplateJson.gen(templates.emptyStructures) as any;
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expect(empty).toHaveProperty('emptyObject');
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expect(empty).toHaveProperty('emptyArray');
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expect(empty).toHaveProperty('emptyString');
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expect(empty).toHaveProperty('nullValue');
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expect(empty).toHaveProperty('zeroNumber');
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expect(empty).toHaveProperty('falseBool');
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expect(empty.emptyObject).toEqual({});
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expect(empty.emptyArray).toEqual([]);
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expect(empty.emptyString).toBe('');
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expect(empty.nullValue).toBeNull();
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expect(empty.zeroNumber).toBe(0);
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expect(empty.falseBool).toBe(false);
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});
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test('generates unicode text', () => {
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deterministic(1111, () => {
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const unicode = TemplateJson.gen(templates.unicodeText) as any;
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expect(unicode).toHaveProperty('ascii');
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expect(unicode).toHaveProperty('latin');
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expect(unicode).toHaveProperty('emoji');
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expect(unicode).toHaveProperty('chinese');
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expect(unicode).toHaveProperty('arabic');
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expect(unicode).toHaveProperty('mixed');
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expect(typeof unicode.ascii).toBe('string');
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expect(typeof unicode.emoji).toBe('string');
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expect(typeof unicode.mixed).toBe('string');
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});
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});
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test('generates large numbers', () => {
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const large = TemplateJson.gen(templates.largeNumbers) as any;
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expect(large).toHaveProperty('maxSafeInteger');
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expect(large).toHaveProperty('minSafeInteger');
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expect(large).toHaveProperty('largeFloat');
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expect(large).toHaveProperty('smallFloat');
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expect(large).toHaveProperty('preciseDecimal');
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expect(large).toHaveProperty('scientificNotation');
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expect(large.maxSafeInteger).toBe(Number.MAX_SAFE_INTEGER);
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expect(large.minSafeInteger).toBe(Number.MIN_SAFE_INTEGER);
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expect(typeof large.largeFloat).toBe('number');
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expect(typeof large.smallFloat).toBe('number');
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expect(large.scientificNotation).toBe(1.23e-45);
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});
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test('generates mixed types with or template', () => {
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deterministic(1212, () => {
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// Test multiple times to see different types
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const values = [];
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for (let i = 0; i < 10; i++) {
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values.push(TemplateJson.gen(templates.mixedTypes));
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}
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// Should have generated different types
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const types = new Set(values.map(v => typeof v));
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expect(types.size).toBeGreaterThan(1);
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});
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});
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});
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});

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