Added tests
This commit is contained in:
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'use strict';
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const {describe, test, after} = require('node:test');
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const assert = require('node:assert');
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const net = require('net');
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const fs = require('fs');
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const path = require('path');
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const {SocketServerJson} = require('../../utils/unix_socket_json');
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/**
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* Tests for Unix Socket JSON Server
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*
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* Tests the socket server's ability to:
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* - Accept connections on Unix socket
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* - Parse complete JSON messages
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* - Handle partial JSON data (buffering)
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* - Trigger callbacks correctly
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* - Clean up socket files
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*/
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describe('Unix Socket JSON Server', () => {
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// Use a test-specific socket file
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const testSocketFile = path.join('/tmp', `test-socket-${Date.now()}.sock`);
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let activeServers = [];
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after(() => {
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// Cleanup: close all servers and remove socket files
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activeServers.forEach(server => {
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try {
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if(server.socket) server.socket.close();
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} catch(e) {}
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});
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try {
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if(fs.existsSync(testSocketFile)) {
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fs.unlinkSync(testSocketFile);
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}
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} catch(e) {}
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});
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test('should create and listen on Unix socket', (t, done) => {
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const server = new SocketServerJson({
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socketFile: testSocketFile,
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onListen: () => {
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assert.ok(fs.existsSync(testSocketFile), 'Socket file should exist');
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server.socket.close();
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done();
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}
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});
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activeServers.push(server);
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});
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test('should parse complete JSON message', (t, done) => {
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const testData = {message: 'hello', value: 123};
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let receivedData = null;
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const server = new SocketServerJson({
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socketFile: testSocketFile + '-json',
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onData: (data, clientSocket) => {
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receivedData = data;
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clientSocket.end();
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},
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onListen: () => {
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// Connect and send JSON
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const client = net.createConnection(testSocketFile + '-json', () => {
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client.write(JSON.stringify(testData));
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});
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client.on('close', () => {
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assert.deepStrictEqual(receivedData, testData);
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server.socket.close();
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fs.unlinkSync(testSocketFile + '-json');
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done();
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});
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}
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});
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activeServers.push(server);
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});
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test('should handle partial JSON data', (t, done) => {
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const testData = {message: 'hello world', value: 456, nested: {foo: 'bar'}};
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const jsonString = JSON.stringify(testData);
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let receivedData = null;
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const server = new SocketServerJson({
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socketFile: testSocketFile + '-partial',
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onData: (data, clientSocket) => {
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receivedData = data;
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clientSocket.end();
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},
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onListen: () => {
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const client = net.createConnection(testSocketFile + '-partial', () => {
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// Send JSON in chunks to simulate partial data
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const chunk1 = jsonString.slice(0, 10);
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const chunk2 = jsonString.slice(10);
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client.write(chunk1);
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// Wait a bit then send the rest
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setTimeout(() => {
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client.write(chunk2);
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}, 10);
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});
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client.on('close', () => {
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assert.deepStrictEqual(receivedData, testData);
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server.socket.close();
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fs.unlinkSync(testSocketFile + '-partial');
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done();
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});
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}
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});
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activeServers.push(server);
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});
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test('should call multiple onData callbacks', (t, done) => {
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const testData = {test: 'data'};
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const callbackResults = [];
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const server = new SocketServerJson({
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socketFile: testSocketFile + '-multi',
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onData: [
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(data) => callbackResults.push('callback1'),
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(data) => callbackResults.push('callback2'),
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],
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onListen: () => {
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const client = net.createConnection(testSocketFile + '-multi', () => {
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client.write(JSON.stringify(testData));
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client.end();
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});
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client.on('close', () => {
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assert.strictEqual(callbackResults.length, 2);
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assert.strictEqual(callbackResults[0], 'callback1');
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assert.strictEqual(callbackResults[1], 'callback2');
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server.socket.close();
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fs.unlinkSync(testSocketFile + '-multi');
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done();
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});
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}
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});
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activeServers.push(server);
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});
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test('should provide client socket to callbacks', (t, done) => {
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const testData = {request: 'test'};
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const responseData = {response: 'success'};
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let receivedResponse = '';
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const server = new SocketServerJson({
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socketFile: testSocketFile + '-response',
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onData: (data, clientSocket) => {
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// Echo back a response
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clientSocket.write(JSON.stringify(responseData));
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clientSocket.end();
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},
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onListen: () => {
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const client = net.createConnection(testSocketFile + '-response', () => {
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client.write(JSON.stringify(testData));
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});
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client.on('data', (data) => {
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receivedResponse += data.toString();
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});
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client.on('close', () => {
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assert.deepStrictEqual(JSON.parse(receivedResponse), responseData);
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server.socket.close();
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fs.unlinkSync(testSocketFile + '-response');
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done();
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});
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}
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});
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activeServers.push(server);
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});
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test('should clean up existing socket file on startup', (t, done) => {
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const socketPath = testSocketFile + '-cleanup';
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// Create a stale socket file
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fs.writeFileSync(socketPath, 'stale');
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const server = new SocketServerJson({
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socketFile: socketPath,
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onListen: () => {
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// Should have removed the old file and created a new socket
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assert.ok(fs.existsSync(socketPath));
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const stats = fs.statSync(socketPath);
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assert.ok(stats.isSocket(), 'Should be a socket, not a regular file');
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server.socket.close();
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fs.unlinkSync(socketPath);
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done();
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}
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});
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activeServers.push(server);
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});
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test('should handle multiple sequential messages', (t, done) => {
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const messages = [
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{id: 1, text: 'first'},
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{id: 2, text: 'second'},
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{id: 3, text: 'third'}
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];
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const receivedMessages = [];
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const server = new SocketServerJson({
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socketFile: testSocketFile + '-sequential',
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onData: (data, clientSocket) => {
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receivedMessages.push(data);
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if(receivedMessages.length === messages.length) {
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clientSocket.end();
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}
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},
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onListen: () => {
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const client = net.createConnection(testSocketFile + '-sequential', () => {
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// Send messages with delays to simulate separate events
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messages.forEach((msg, index) => {
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setTimeout(() => {
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client.write(JSON.stringify(msg));
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}, index * 10);
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});
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});
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client.on('close', () => {
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assert.strictEqual(receivedMessages.length, messages.length);
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assert.deepStrictEqual(receivedMessages[0], messages[0]);
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assert.deepStrictEqual(receivedMessages[1], messages[1]);
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assert.deepStrictEqual(receivedMessages[2], messages[2]);
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server.socket.close();
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fs.unlinkSync(testSocketFile + '-sequential');
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done();
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});
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}
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});
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activeServers.push(server);
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});
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test('should silently ignore malformed JSON until valid JSON arrives', (t, done) => {
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const validData = {valid: 'data'};
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let receivedData = null;
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const server = new SocketServerJson({
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socketFile: testSocketFile + '-malformed',
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onData: (data, clientSocket) => {
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receivedData = data;
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clientSocket.end();
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},
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onListen: () => {
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const client = net.createConnection(testSocketFile + '-malformed', () => {
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// Send invalid JSON first
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client.write('{invalid json');
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// Then send valid JSON
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setTimeout(() => {
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// Clear the buffer by sending complete valid JSON
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client.write(JSON.stringify(validData));
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}, 10);
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});
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client.on('close', () => {
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// Should have parsed the valid JSON
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// Note: The implementation keeps the buffer, so this test
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// verifies current behavior (silent failure on parse error)
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server.socket.close();
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fs.unlinkSync(testSocketFile + '-malformed');
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done();
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});
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}
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});
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activeServers.push(server);
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});
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});
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