# Tests Created for Etherscan v2 API Migration
## Overview
Successfully created comprehensive test suite for the Etherscan v2 API migration covering all new functionality, network configuration, and backward compatibility.
## Test Files Created
### 1. Network Configuration Tests
**File:** `/Users/dennisonbertram/Develop/ModelContextProtocol/mcp-etherscan/src/__tests__/config/networks.test.ts`
**Tests Created:** 45
**Coverage:**
- `getChainId()` - 11 tests
- Network slug resolution
- Chain ID passthrough
- Alias handling (mainnet/ethereum)
- Error cases
- `getNetworkByChainId()` - 5 tests
- Valid chain ID lookups
- Network metadata validation
- Invalid chain ID handling
- `getNetworkBySlug()` - 3 tests
- Valid/invalid slug lookups
- `isValidNetwork()` - 8 tests
- Network slug validation
- Chain ID validation
- Edge cases
- `getAllNetworks()` - 5 tests
- Network count (72 networks)
- Duplicate prevention
- Popular network inclusion
- `getMainnets()` - 3 tests
- Mainnet filtering
- `getTestnets()` - 3 tests
- Testnet filtering
- Constants validation - 7 tests
- V2 API URL
- Configuration integrity
### 2. V2 Request Builder Tests
**File:** `/Users/dennisonbertram/Develop/ModelContextProtocol/mcp-etherscan/src/__tests__/api/v2-request-builder.test.ts`
**Tests Created:** 29
**Coverage:**
- `V2RequestBuilder` class - 3 tests
- Constructor validation
- Invalid chain ID rejection
- `buildUrl()` method - 10 tests
- URL structure
- Parameter ordering (chainid first)
- URL encoding
- Type handling (string, number, boolean)
- Alphabetical sorting
- `buildUrlForChain()` method - 3 tests
- Chain-specific URLs
- State preservation
- `setChainId()` method - 2 tests
- Updates and validation
- `buildV2Url()` function - 2 tests
- Standalone function operation
- `parseApiResponse()` function - 7 tests
- Response parsing
- Error detection
- `isErrorResponse()` function - 2 tests
- Error/success detection
### 3. EtherscanService Integration Tests
**File:** `/Users/dennisonbertram/Develop/ModelContextProtocol/mcp-etherscan/src/__tests__/services/etherscanService.test.ts`
**Tests Created:** 49
**Coverage:**
- Constructor - 13 tests
- Network slug acceptance
- Chain ID acceptance
- Default network
- API key validation
- Error cases
- V2 API methods - 7 tests
- getBeaconWithdrawals
- getTokenInfo
- getTokenPortfolio
- getTokenHolders
- getLogs
- getNetworkStats
- getDailyTxCount
- Legacy methods - 16 tests
- All existing methods verified
- Backward compatibility
- Chain ID management - 3 tests
- Get/set chain ID
- Network switching
- Multi-network support - 4 tests
- Major mainnets (8 networks)
- Popular testnets (6 networks)
- L2 networks (6 networks)
- Emerging networks (4 networks)
- Configuration - 2 tests
- API key storage
- Independent instances
- Backward compatibility - 4 tests
- Legacy network names
- Alias support
### 4. Enhanced Smoke Test
**File:** `/Users/dennisonbertram/Develop/ModelContextProtocol/mcp-etherscan/src/test.ts`
**Updates Made:**
- Added v2 API migration verification
- Network configuration validation
- V2RequestBuilder URL construction tests
- Network resolution tests
- Service instantiation tests
- V2 API methods availability checks
- Color-coded output for better readability
- Graceful handling of missing API key
## Test Results Summary
### Build Status
```
✅ TypeScript compilation: SUCCESS
✅ Zero errors
✅ Zero warnings
```
### Test Execution
```
✅ Network Configuration: 45/45 passed
✅ V2 Request Builder: 29/29 passed
✅ EtherscanService: 49/49 passed
✅ Smoke Test: All v2 migration tests passed
```
### Total Coverage
```
Total Test Suites: 3
Total Tests: 123
Passed: 123
Failed: 0
Success Rate: 100%
```
## Networks Verified
### Supported Networks: 72
**Major Mainnets:**
- Ethereum (1), Polygon (137), Arbitrum (42161)
- Optimism (10), Base (8453), Avalanche (43114)
- BNB Chain (56), Fantom (250), and more...
**L2 Networks:**
- Arbitrum, Arbitrum Nova, Optimism, Base
- Linea, Scroll, zkSync, Mantle, Blast
- Taiko, Unichain, World, and more...
**Testnets:**
- Sepolia, Holesky, Arbitrum Sepolia
- Optimism Sepolia, Base Sepolia, Polygon Amoy
- and many more...
## Test Organization
```
src/
├── __tests__/
│ ├── config/
│ │ └── networks.test.ts (45 tests)
│ ├── api/
│ │ └── v2-request-builder.test.ts (29 tests)
│ └── services/
│ └── etherscanService.test.ts (49 tests)
└── test.ts (smoke tests)
```
## Running Tests
### All Tests
```bash
npm run build && npm run test
```
### Individual Test Suites
```bash
# Network configuration tests
node build/__tests__/config/networks.test.js
# V2 request builder tests
node build/__tests__/api/v2-request-builder.test.js
# EtherscanService integration tests
node build/__tests__/services/etherscanService.test.js
```
## Key Features Tested
### 1. V2 API Integration
- ✅ Unified v2 API endpoint
- ✅ Chain ID parameter injection
- ✅ URL construction and encoding
- ✅ Parameter sorting (chainid first)
### 2. Network Configuration
- ✅ 72 networks supported
- ✅ Network slug resolution
- ✅ Chain ID validation
- ✅ Mainnet/testnet filtering
### 3. Service Functionality
- ✅ Constructor accepts slugs and chain IDs
- ✅ Default to Ethereum mainnet
- ✅ All v2 API methods available
- ✅ All legacy methods preserved
- ✅ Network switching support
### 4. Error Handling
- ✅ Invalid network rejection
- ✅ Invalid chain ID rejection
- ✅ Missing API key detection
- ✅ API error response parsing
### 5. Backward Compatibility
- ✅ Legacy network names (mainnet, ethereum)
- ✅ All existing methods work
- ✅ Network aliases supported
## Code Quality
- ✅ Strict TypeScript mode
- ✅ No `any` types used
- ✅ Comprehensive type safety
- ✅ Self-contained test framework
- ✅ Clear test descriptions
- ✅ Proper error messages
## Documentation
Created:
- ✅ TEST-REPORT.md - Comprehensive test report
- ✅ TESTS-CREATED.md - This file
- ✅ Inline test documentation
- ✅ Code comments in tests
## Issues Found
**None.** All tests passed on first execution.
## Verification Checklist
- [✅] TypeScript builds with zero errors
- [✅] All network configuration tests pass
- [✅] All V2 request builder tests pass
- [✅] All EtherscanService tests pass
- [✅] Smoke test passes
- [✅] 72 networks supported
- [✅] V2 API URL correct
- [✅] Chain ID parameter included
- [✅] All v2 API methods exist
- [✅] Backward compatibility maintained
- [✅] Error handling works correctly
- [✅] Network switching works
- [✅] Test documentation complete
## Next Steps
1. ✅ Build completes successfully
2. ✅ All tests pass
3. ✅ Documentation complete
4. 🎯 Ready for deployment
To run integration tests with live API:
```bash
export ETHERSCAN_API_KEY="your-api-key"
npm run test
```
---
**Created:** 2025-12-03
**Project:** mcp-etherscan-server v1.1.2
**Total Tests:** 123
**Status:** ✅ ALL TESTS PASSING
