refactor: centralize constants, add error classes, and DRY test utilities
- Create src/errors.js with custom error classes (RateLimitError, AuthError, ApiError, etc.) - Create src/utils/helpers.js with shared utilities (formatDuration, sleep) - Create tests/helpers/http-client.cjs with shared test utilities (~250 lines deduped) - Centralize OAuth config and other constants in src/constants.js - Add JSDoc types to all major exported functions - Refactor all test files to use shared http-client utilities - Update CLAUDE.md with new architecture documentation 🤖 Generated with [Claude Code](https://claude.com/claude-code) Co-Authored-By: Claude <noreply@anthropic.com>
This commit is contained in:
Badri Narayanan S
260
tests/helpers/http-client.cjs
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260
tests/helpers/http-client.cjs
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/**
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* Shared Test HTTP Client Utilities
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*
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* Provides common HTTP request functions for integration tests.
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* Eliminates code duplication across test files.
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*/
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const http = require('http');
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// Server configuration
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const BASE_URL = 'localhost';
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const PORT = 8080;
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/**
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* Make a streaming SSE request to the API
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* @param {Object} body - Request body
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* @returns {Promise<{content: Array, events: Array, statusCode: number, raw: string}>}
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*/
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function streamRequest(body) {
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return new Promise((resolve, reject) => {
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const data = JSON.stringify(body);
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const req = http.request({
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host: BASE_URL,
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port: PORT,
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path: '/v1/messages',
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method: 'POST',
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headers: {
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'Content-Type': 'application/json',
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'x-api-key': 'test',
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'anthropic-version': '2023-06-01',
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'anthropic-beta': 'interleaved-thinking-2025-05-14',
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'Content-Length': Buffer.byteLength(data)
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}
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}, res => {
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const events = [];
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let fullData = '';
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res.on('data', chunk => {
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fullData += chunk.toString();
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});
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res.on('end', () => {
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// Parse SSE events
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const parts = fullData.split('\n\n').filter(e => e.trim());
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for (const part of parts) {
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const lines = part.split('\n');
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const eventLine = lines.find(l => l.startsWith('event:'));
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const dataLine = lines.find(l => l.startsWith('data:'));
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if (eventLine && dataLine) {
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try {
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const eventType = eventLine.replace('event:', '').trim();
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const eventData = JSON.parse(dataLine.replace('data:', '').trim());
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events.push({ type: eventType, data: eventData });
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} catch (e) { }
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}
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}
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// Build content from events
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const content = [];
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let currentBlock = null;
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for (const event of events) {
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if (event.type === 'content_block_start') {
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currentBlock = { ...event.data.content_block };
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if (currentBlock.type === 'thinking') {
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currentBlock.thinking = '';
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currentBlock.signature = '';
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}
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if (currentBlock.type === 'text') currentBlock.text = '';
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} else if (event.type === 'content_block_delta') {
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const delta = event.data.delta;
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if (delta.type === 'thinking_delta' && currentBlock) {
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currentBlock.thinking += delta.thinking || '';
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}
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if (delta.type === 'signature_delta' && currentBlock) {
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currentBlock.signature += delta.signature || '';
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}
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if (delta.type === 'text_delta' && currentBlock) {
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currentBlock.text += delta.text || '';
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}
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if (delta.type === 'input_json_delta' && currentBlock) {
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currentBlock.partial_json = (currentBlock.partial_json || '') + delta.partial_json;
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}
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} else if (event.type === 'content_block_stop') {
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if (currentBlock?.type === 'tool_use' && currentBlock.partial_json) {
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try { currentBlock.input = JSON.parse(currentBlock.partial_json); } catch (e) { }
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delete currentBlock.partial_json;
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}
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if (currentBlock) content.push(currentBlock);
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currentBlock = null;
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}
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}
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resolve({ content, events, statusCode: res.statusCode, raw: fullData });
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});
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});
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req.on('error', reject);
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req.write(data);
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req.end();
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});
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}
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/**
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* Make a non-streaming JSON request to the API
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* @param {Object} body - Request body
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* @returns {Promise<Object>} - Parsed JSON response with statusCode
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*/
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function makeRequest(body) {
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return new Promise((resolve, reject) => {
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const data = JSON.stringify(body);
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const req = http.request({
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host: BASE_URL,
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port: PORT,
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path: '/v1/messages',
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method: 'POST',
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headers: {
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'Content-Type': 'application/json',
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'x-api-key': 'test',
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'anthropic-version': '2023-06-01',
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'anthropic-beta': 'interleaved-thinking-2025-05-14',
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'Content-Length': Buffer.byteLength(data)
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}
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}, res => {
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let fullData = '';
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res.on('data', chunk => fullData += chunk.toString());
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res.on('end', () => {
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try {
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const parsed = JSON.parse(fullData);
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resolve({ ...parsed, statusCode: res.statusCode });
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} catch (e) {
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reject(new Error(`Parse error: ${e.message}\nRaw: ${fullData.substring(0, 500)}`));
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}
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});
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});
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req.on('error', reject);
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req.write(data);
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req.end();
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});
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}
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/**
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* Analyze content blocks from a response
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* @param {Array} content - Array of content blocks
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* @returns {Object} - Analysis results
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*/
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function analyzeContent(content) {
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const thinking = content.filter(b => b.type === 'thinking');
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const toolUse = content.filter(b => b.type === 'tool_use');
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const text = content.filter(b => b.type === 'text');
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return {
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thinking,
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toolUse,
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text,
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hasThinking: thinking.length > 0,
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hasToolUse: toolUse.length > 0,
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hasText: text.length > 0,
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thinkingHasSignature: thinking.some(t => t.signature && t.signature.length >= 50)
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};
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}
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/**
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* Analyze SSE events from a streaming response
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* @param {Array} events - Array of SSE events
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* @returns {Object} - Event counts by type
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*/
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function analyzeEvents(events) {
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return {
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messageStart: events.filter(e => e.type === 'message_start').length,
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blockStart: events.filter(e => e.type === 'content_block_start').length,
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blockDelta: events.filter(e => e.type === 'content_block_delta').length,
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blockStop: events.filter(e => e.type === 'content_block_stop').length,
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messageDelta: events.filter(e => e.type === 'message_delta').length,
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messageStop: events.filter(e => e.type === 'message_stop').length,
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thinkingDeltas: events.filter(e => e.data?.delta?.type === 'thinking_delta').length,
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signatureDeltas: events.filter(e => e.data?.delta?.type === 'signature_delta').length,
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textDeltas: events.filter(e => e.data?.delta?.type === 'text_delta').length,
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inputJsonDeltas: events.filter(e => e.data?.delta?.type === 'input_json_delta').length
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};
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}
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// Common tool definitions for tests
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const commonTools = {
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getWeather: {
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name: 'get_weather',
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description: 'Get the current weather for a location',
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input_schema: {
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type: 'object',
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properties: {
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location: { type: 'string', description: 'City name' }
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},
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required: ['location']
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}
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},
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searchFiles: {
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name: 'search_files',
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description: 'Search for files matching a pattern',
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input_schema: {
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type: 'object',
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properties: {
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pattern: { type: 'string', description: 'Glob pattern to search' },
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path: { type: 'string', description: 'Directory to search in' }
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},
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required: ['pattern']
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}
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},
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readFile: {
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name: 'read_file',
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description: 'Read contents of a file',
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input_schema: {
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type: 'object',
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properties: {
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path: { type: 'string', description: 'Path to file' }
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},
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required: ['path']
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}
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},
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executeCommand: {
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name: 'execute_command',
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description: 'Execute a shell command',
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input_schema: {
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type: 'object',
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properties: {
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command: { type: 'string', description: 'Command to execute' },
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cwd: { type: 'string', description: 'Working directory' }
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},
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required: ['command']
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}
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},
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writeFile: {
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name: 'write_file',
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description: 'Write to a file',
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input_schema: {
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type: 'object',
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properties: {
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path: { type: 'string' },
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content: { type: 'string' }
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},
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required: ['path', 'content']
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}
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},
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runTests: {
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name: 'run_tests',
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description: 'Run test suite',
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input_schema: {
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type: 'object',
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properties: { pattern: { type: 'string' } },
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required: ['pattern']
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}
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}
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};
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module.exports = {
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BASE_URL,
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PORT,
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streamRequest,
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makeRequest,
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analyzeContent,
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analyzeEvents,
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commonTools
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};
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