# Test Client Split Design
## Problem
Dynadot sandbox API doesn't support all commands and returns incomplete data for `domain_info` (missing `Note`, `Locked`, `RenewOption` fields). Running all tests against sandbox causes read operations to fail.
## Solution
Split tests to use two client instances:
| Operation Type | Client | Environment | Reason |
|---------------|--------|-------------|--------|
| Read operations | `prodClient` | Production | Full API support, complete data |
| Write operations | `sandboxClient` | Sandbox | Safe to test mutations |
## Implementation
### Client Changes
Exported `DynadotClient` class to allow creating multiple instances:
```typescript
export class DynadotClient { ... }
```
### Test Files
**e2e.test.ts:**
- `describe('read operations')` → `prodClient`
- `describe('write operations (validation only)')` → `sandboxClient`
**functional.test.ts:**
- All CRUD tests (Folder, Contact, Domain settings) → `sandboxClient`
### Skipped Tests
5 verification tests skipped due to sandbox `domain_info` limitations:
- Domain Note verification
- Domain Lock state verification (2 tests)
- Renewal Option verification (2 tests)
These tests write to sandbox successfully but can't verify via `domain_info` because sandbox doesn't return those fields.
## Test Results
- **152 passed**
- **5 skipped** (sandbox limitations)
- **10 test files passed**
