fix: Add credential auth and test for Twilio, Pipedrive, Asana, Freshdesk, Workable

[BerniWittmann]

Summary

Add missing authenticate and/or test properties to 5 credential files as part of the ongoing credential auth/test updates (NODE-2621).

Credential	Linear Issue	Auth Method	Test Endpoint	Needs
Twilio API	NODE-2740	HTTP Basic Auth (AccountSID:AuthToken)	GET /2010-04-01/Accounts/{accountSid}.json	test only
Pipedrive API	NODE-2795	Query string api_token	GET /v1/userSettings	test only
Asana API	NODE-2817	Bearer token header	GET /api/1.0/users/me	test only
Freshdesk API	NODE-2706	HTTP Basic Auth (apiKey:X)	GET /api/v2/agents/me	authenticate + test
Workable API	NODE-2810	Bearer token header	GET /spi/v3/jobs	authenticate + test

All auth patterns verified against both GenericFunctions and current API documentation.

Related Linear tickets, Github issues, and Community forum posts

https://linear.app/n8n/issue/NODE-4814
https://linear.app/n8n/issue/NODE-2621

Review / Merge checklist

• PR title and summary are descriptive. (conventions)
• Docs updated or follow-up ticket created.
• Tests included.
• PR Labeled with release/backport (if the PR is an urgent fix that needs to be backported)

[codecov]

Codecov Report

❌ Patch coverage is 0% with 7 lines in your changes missing coverage. Please review.

Files with missing lines	Patch %	Lines
...nodes-base/credentials/FreshdeskApi.credentials.ts	0.00%	2 Missing ⚠️
.../nodes-base/credentials/WorkableApi.credentials.ts	0.00%	2 Missing ⚠️
...ges/nodes-base/credentials/AsanaApi.credentials.ts	0.00%	1 Missing ⚠️
...nodes-base/credentials/PipedriveApi.credentials.ts	0.00%	1 Missing ⚠️
...es/nodes-base/credentials/TwilioApi.credentials.ts	0.00%	1 Missing ⚠️

📢 Thoughts on this report? Let us know!

[cubic-dev-ai]

No issues found across 5 files

Architecture diagram

sequenceDiagram
    participant UI as n8n UI
    participant Core as n8n Server (Core)
    participant Cred as Credential Definition
    participant API as External API (e.g., Twilio, Asana)

    Note over UI,API: Credential Validation Flow (Test Connection)

    UI->>Core: POST /credentials/test
    Core->>Cred: Load credential definition

    Note over Core,Cred: PR adds 'test' and 'authenticate' logic

    Core->>Core: Resolve credentials (e.g., apiKey, domain)
    Core->>Core: NEW: Parse test.request (URL/baseURL)
    
    alt NEW: 'authenticate' property defined (Freshdesk/Workable)
        Core->>Core: Map credentials to Request (Headers/Basic Auth)
    else Standard/Query Auth (Pipedrive/Asana/Twilio)
        Core->>Core: Use existing auth mapping logic
    end

    Core->>API: NEW: GET request to test endpoint
    Note right of API: e.g., /users/me, /agents/me, or /jobs

    alt API Success
        API-->>Core: 200 OK
        Core-->>UI: Connection successful
    else API Failure
        API-->>Core: 401 Unauthorized / 404 Not Found
        Core-->>UI: Connection failed
    end

    Note over UI,API: Runtime Execution Flow (Node Usage)

    opt If 'authenticate' changed (Freshdesk/Workable)
        Core->>Core: NEW: Automatically inject auth headers into node requests
    end

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[alexander-gekov]

Sorry for the long wait, pulled the changes and everything seems to be good!