<!-- Generated by SpecStory -->
# Continue with task 16 (2025-06-09 22:51:27)
_**User**_
Please continue with task 16
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_**Assistant**_
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I'll check the details of task 16 to understand what needs to be done.
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---
Now let me check the current status of the dependency (task 14) to see if it's completed:
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Perfect! Task 14 is completed, so we can proceed with task 16. Let me expand this task to break it down into manageable subtasks for SSE connection testing and MCP client integration verification.
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Great! I've broken down task 16 into 6 manageable subtasks. Now let me get the next available subtask to work on:
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---
Perfect! Now I can see that subtask 16.1 "Automated SSE Connection Establishment and Handshake Testing" is the first subtask to work on since it has no dependencies. Let me start by understanding the current SSE implementation and then create comprehensive tests for it.
First, let me set the subtask status to in-progress and examine the current codebase:
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Now let me examine the current SSE implementation in the codebase:
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Read file: src/index.ts
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Now let me examine the main server implementation to understand the SSE handling:
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Read file: src/server.ts
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Let me read the SSE connection handling section:
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Read file: src/server.ts
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Let me also look at the route setup to understand the SSE endpoint:
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Read file: src/server.ts
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Now I need to examine the existing test structure to understand how to create comprehensive SSE connection tests. Let me check the current test setup:
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<details>
<summary>Listed directory src/__tests__ • **9** results</summary>
| Name |
|-------|
| 📄 `workflow.integration.test.ts` |
| 📄 `TallyApiClient.test.ts` |
| 📄 `TallyApiClient.integration.test.ts` |
| 📄 `health-check.test.ts` |
| 📄 `error-handling-logging.test.ts` |
| 📄 `middleware-sse.test.ts` |
| 📄 `server-lifecycle.test.ts` |
| 📄 `setup.ts` |
| 📄 `server.test.ts` |
</details>
---
I notice there's already a `middleware-sse.test.ts` file. Let me examine it to see what's already covered:
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Read file: src/__tests__/middleware-sse.test.ts
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Let me see the rest of this file:
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Read file: src/__tests__/middleware-sse.test.ts
---
Now I understand the current test coverage. The existing `middleware-sse.test.ts` provides basic SSE testing, but it's quite limited. I need to create a comprehensive test file that covers the specific requirements of subtask 16.1. Let me update the subtask with my findings and then create the comprehensive tests:
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Now let me create a comprehensive SSE connection and handshake test file that covers the specific requirements for MCP client integration:
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Let me create the file differently by first checking if it exists:
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<details>
<summary>Searched codebase "sse-connection-handshake.test.ts" • **1** results</summary>
| File |
|------|
| `undefined` |
</details>
---
The file doesn't exist yet, so I need to create it. Let me use the edit_file tool to create it:
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Let me try creating the file using a different approach by using the edit_file tool without a conditional check:
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```bash
touch src/__tests__/sse-connection-handshake.test.ts
```
```
╰─ ^[[200~touch src/__tests__/sse-connection-handshake.test.ts^[[201~
╭─ ~/dev/projects/tally-mcp main ············································· ✔ 22:55:40
╰─ touch sr
```
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Now let me add the content to the file:
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---
Let me check if there's a permissions or file issue:
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```bash
ls -la src/__tests__/sse-connection-handshake.test.ts
```
```
❯ ls -la src/__tests__/sse-connection-handshake.test.ts
Size Date Modified Name
18k 2025-06-09 22:56 src/__tests__/sse-connection-handshake.test.ts
╭─ ~/dev/projects/tally-mcp main ?2 ·········································· ✔ 22:56:54
╰─
```
---
Great! The file was created successfully. Let me check its contents to see if the edit worked:
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Read file: src/__tests__/sse-connection-handshake.test.ts
---
Perfect! The comprehensive test file has been created successfully. Now let me run the new tests to verify they work properly:
---
```bash
npm test -- --testPathPattern=sse-connection-handshake.test.ts --verbose
```
```
❯ npm test -- --testPathPattern=sse-connection-handshake.test.ts --verbose
> tally-mcp@1.0.0 test
> jest --testPathPattern=sse-connection-handshake.test.ts --verbose
RUNS src/__tests__/sse-connection-handshake.test.ts
RUNS src/__tests__/sse-connection-handshake.test.ts
RUNS src/__tests__/sse-connection-handshake.test.ts
RUNS src/__tests__/sse-connection-handshake.test.ts
RUNS src/__tests__/sse-connection-handshake.test.ts
RUNS src/__tests__/sse-connection-handshake.test.ts
RUNS src/__tests__/sse-connection-handshake.test.ts
RUNS src/__tests__/sse-connection-handshake.test.ts
RUNS src/__tests__/sse-connection-handshake.test.ts
RUNS src/__tests__/sse-connection-handshake.test.ts
RUNS src/__tests__/sse-connection-handshake.test.ts
RUNS src/__tests__/sse-connection-handshake.test.ts
RUNS src/__tests__/sse-connection-handshake.test.ts
RUNS src/__tests__/sse-connection-handshake.test.ts
RUNS src/__tests__/sse-connection-handshake.test.ts
RUNS src/__tests__/sse-connection-handshake.test.ts
RUNS src/__tests__/sse-connection-handshake.test.ts
RUNS src/__tests__/sse-connection-handshake.test.ts
RUNS src/__tests__/sse-connection-handshake.test.ts
RUNS src/__tests__/sse-connection-handshake.test.ts
RUNS src/__tests__/sse-connection-handshake.test.ts
RUNS src/__tests__/sse-connection-handshake.test.ts
RUNS src/__tests__/sse-connection-handshake.test.ts
RUNS src/__tests__/sse-connection-handshake.test.ts
RUNS src/__tests__/sse-connection-handshake.test.ts
RUNS src/__tests__/sse-connection-handshake.test.ts
RUNS src/__tests__/sse-connection-handshake.test.ts
RUNS src/__tests__/sse-connection-handshake.test.ts
RUNS src/__tests__/sse-connection-handshake.test.ts
RUNS src/__tests__/sse-connection-handshake.test.ts
RUNS src/__tests__/sse-connection-handshake.test.ts
RUNS src/__tests__/sse-connection-handshake.test.ts
RUNS src/__tests__/sse-connection-handshake.test.ts
RUNS src/__tests__/sse-connection-handshake.test.ts
FAIL src/__tests__/sse-connection-handshake.test.ts (15.797 s)
RUNS src/__tests__/sse-connection-handshake.test.ts
SSE Connection Establishment and MCP Handshake Testing
RUNS src/__tests__/sse-connection-handshake.test.ts
Basic SSE Connection Establishment
RUNS src/__tests__/sse-connection-handshake.test.ts
✓ should establish SSE connection within expected timeframe (134 ms)
RUNS src/__tests__/sse-connection-handshake.test.ts
✕ should handle multiple simultaneous SSE connections (190 ms)
RUNS src/__tests__/sse-connection-handshake.test.ts
✕ should send initial connection confirmation message (2153 ms)
RUNS src/__tests__/sse-connection-handshake.test.ts
✕ should maintain heartbeat mechanism (10111 ms)
RUNS src/__tests__/sse-connection-handshake.test.ts
MCP Protocol Handshake
RUNS src/__tests__/sse-connection-handshake.test.ts
✓ should complete proper MCP initialization handshake (125 ms)
RUNS src/__tests__/sse-connection-handshake.test.ts
✓ should support capability negotiation (117 ms)
RUNS src/__tests__/sse-connection-handshake.test.ts
✕ should handle invalid handshake messages gracefully (120 ms)
RUNS src/__tests__/sse-connection-handshake.test.ts
✓ should validate JSON-RPC 2.0 compliance (113 ms)
RUNS src/__tests__/sse-connection-handshake.test.ts
Tool Discovery Through SSE
RUNS src/__tests__/sse-connection-handshake.test.ts
✓ should list available tools correctly (117 ms)
RUNS src/__tests__/sse-connection-handshake.test.ts
✓ should handle tool calls with proper error handling (116 ms)
RUNS src/__tests__/sse-connection-handshake.test.ts
Client Type Simulation
RUNS src/__tests__/sse-connection-handshake.test.ts
✓ should handle Claude Desktop simulation (122 ms)
RUNS src/__tests__/sse-connection-handshake.test.ts
✓ should handle MCP Inspector simulation (116 ms)
RUNS src/__tests__/sse-connection-handshake.test.ts
✓ should handle custom client simulation (117 ms)
RUNS src/__tests__/sse-connection-handshake.test.ts
Connection State Management
RUNS src/__tests__/sse-connection-handshake.test.ts
✕ should track connection lifecycle properly (111 ms)
RUNS src/__tests__/sse-connection-handshake.test.ts
✕ should handle abrupt connection termination (115 ms)
RUNS src/__tests__/sse-connection-handshake.test.ts
Performance and Reliability
RUNS src/__tests__/sse-connection-handshake.test.ts
✓ should establish connections within performance benchmarks (651 ms)
RUNS src/__tests__/sse-connection-handshake.test.ts
✕ should handle rapid connection cycling (677 ms)
RUNS src/__tests__/sse-connection-handshake.test.ts
RUNS src/__tests__/sse-connection-handshake.test.ts
● SSE Connection Establishment and MCP Handshake Testing › Basic SSE Connection Establishment › should handle mu
ltiple simultaneous SSE connections
AxiosError: Request failed with status code 503
230 |
231 | // Verify server tracks connections correctly
> 232 | const healthResponse = await axios.get(`${baseUrl}/health`);
| ^
233 | expect(healthResponse.data.connections).toBeGreaterThanOrEqual(3);
234 |
235 | // Clean up
at settle (node_modules/axios/lib/core/settle.js:19:12)
at IncomingMessage.handleStreamEnd (node_modules/axios/lib/adapters/http.js:599:11)
at Axios.request (node_modules/axios/lib/core/Axios.js:45:41)
at Object.<anonymous> (src/__tests__/sse-connection-handshake.test.ts:232:30)
● SSE Connection Establishment and MCP Handshake Testing › Basic SSE Connection Establishment › should send init
ial connection confirmation message
expect(received).toBeGreaterThan(expected)
Expected: > 0
Received: 0
243 | // Wait for initial connection message
244 | const messages = await client.waitForMessages(1, 2000);
> 245 | expect(messages.length).toBeGreaterThan(0);
| ^
246 |
247 | const connectionEvent = await client.waitForEvent('connection', 2000);
248 | expect(connectionEvent).toBeDefined();
at Object.<anonymous> (src/__tests__/sse-connection-handshake.test.ts:245:31)
● SSE Connection Establishment and MCP Handshake Testing › Basic SSE Connection Establishment › should maintain
heartbeat mechanism
thrown: "Exceeded timeout of 10000 ms for a test.
Add a timeout value to this test to increase the timeout, if this is a long-running test. See https://jestjs.i
o/docs/api#testname-fn-timeout."
257 | });
258 |
> 259 | test('should maintain heartbeat mechanism', async () => {
| ^
260 | const client = new MockMCPClient(`${baseUrl}/sse`, 'heartbeat-test');
261 | await client.connect();
262 |
at src/__tests__/sse-connection-handshake.test.ts:259:5
at src/__tests__/sse-connection-handshake.test.ts:201:3
at Object.<anonymous> (src/__tests__/sse-connection-handshake.test.ts:172:1)
● SSE Connection Establishment and MCP Handshake Testing › MCP Protocol Handshake › should handle invalid handsh
ake messages gracefully
expect(received).toBe(expected) // Object.is equality
Expected: "2.0"
Received: undefined
325 |
326 | expect(response.status).toBe(400);
> 327 | expect(response.data.jsonrpc).toBe('2.0');
| ^
328 | expect(response.data.error).toBeDefined();
329 | expect(response.data.error.code).toBe(-32600); // Invalid Request
330 | }
at Object.<anonymous> (src/__tests__/sse-connection-handshake.test.ts:327:39)
● SSE Connection Establishment and MCP Handshake Testing › Connection State Management › should track connection
lifecycle properly
AxiosError: Request failed with status code 503
457 | describe('Connection State Management', () => {
458 | test('should track connection lifecycle properly', async () => {
> 459 | const initialHealthResponse = await axios.get(`${baseUrl}/health`);
| ^
460 | const initialConnections = initialHealthResponse.data.connections;
461 |
462 | const client = new MockMCPClient(`${baseUrl}/sse`, 'lifecycle-test');
at settle (node_modules/axios/lib/core/settle.js:19:12)
at IncomingMessage.handleStreamEnd (node_modules/axios/lib/adapters/http.js:599:11)
at Axios.request (node_modules/axios/lib/core/Axios.js:45:41)
at Object.<anonymous> (src/__tests__/sse-connection-handshake.test.ts:459:37)
● SSE Connection Establishment and MCP Handshake Testing › Connection State Management › should handle abrupt co
nnection termination
AxiosError: Request failed with status code 503
488 |
489 | // Server should handle this gracefully and not crash
> 490 | const healthResponse = await axios.get(`${baseUrl}/health`);
| ^
491 | expect(healthResponse.status).toBe(200);
492 | });
493 | });
at settle (node_modules/axios/lib/core/settle.js:19:12)
at IncomingMessage.handleStreamEnd (node_modules/axios/lib/adapters/http.js:599:11)
at Axios.request (node_modules/axios/lib/core/Axios.js:45:41)
at Object.<anonymous> (src/__tests__/sse-connection-handshake.test.ts:490:30)
● SSE Connection Establishment and MCP Handshake Testing › Performance and Reliability › should handle rapid con
nection cycling
AxiosError: Request failed with status code 503
533 |
534 | // Server should still be responsive
> 535 | const healthResponse = await axios.get(`${baseUrl}/health`);
| ^
536 | expect(healthResponse.status).toBe(200);
537 | expect(healthResponse.data.healthy).toBe(true);
538 | });
at settle (node_modules/axios/lib/core/settle.js:19:12)
at IncomingMessage.handleStreamEnd (node_modules/axios/lib/adapters/http.js:599:11)
at Axios.request (node_modules/axios/lib/core/Axios.js:45:41)
at Object.<anonymous> (src/__tests__/sse-connection-handshake.test.ts:535:30)
RUNS src/__tests__/sse-connection-handshake.test.ts
Test Suites: 1 failed, 1 total
Tests: 7 failed, 10 passed, 17 total
Snapshots: 0 total
Time: 15.962 s
Ran all test suites matching /sse-connection-handshake.test.ts/i.
Jest has detected the following 1 open handle potentially keeping Jest from exiting:
● Timeout
1190 |
1191 | // Set up error handler BEFORE calling listen
> 1192 | this.server = this.app.listen(this.config.port, this.config.host);
| ^
1193 |
1194 | this.server.on('error', (error: any) => {
1195 | this.log('error', 'HTTP server error:', undefined, error as Error);
at Function.listen (node_modules/express/lib/application.js:605:24)
at src/server.ts:1192:32
at MCPServer.startHttpServer (src/server.ts:1170:12)
at MCPServer.initialize (src/server.ts:522:18)
at Object.<anonymous> (src/__tests__/sse-connection-handshake.test.ts:190:18)
╭─ ~/dev/projects/tally-mcp main !1 ?2 ···························· 1 ✘ 17s 22:57:23
╰─
```
---
I can see several issues with the tests that need to be fixed:
1. **503 errors**: The server is becoming unhealthy during tests
2. **SSE message handling**: The EventSource events aren't being captured properly
3. **Heartbeat timeout**: The heartbeat test is timing out
4. **Invalid message handling**: Error responses don't match expected format
Let me update the subtask with the test results and fix the issues:
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Now let me fix the most critical issues in the test file. First, I need to fix the MockMCPClient event handling and server health issues:
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