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Release v2.24.0: Unified get_node Tool with Code Review Fixes (#437)

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* feat(tools): unify node information retrieval with get_node tool

Implements v2.24.0 featuring a unified node information tool that consolidates
get_node_info and get_node_essentials functionality while adding version history
and type structure metadata capabilities.

Key Features:
- Unified get_node tool with progressive detail levels (minimal/standard/full)
- Version history access (versions, compare, breaking changes, migrations)
- Type structure metadata integration from v2.23.0
- Token-efficient defaults optimized for AI agents
- Backward-compatible via private method preservation

Breaking Changes:
- Removed get_node_info tool (replaced by get_node with detail='full')
- Removed get_node_essentials tool (replaced by get_node with detail='standard')
- Tool count: 40 → 39 tools

Implementation:
- src/mcp/tools.ts: Added unified get_node tool definition
- src/mcp/server.ts: Implemented getNode() with 7 mode-specific methods
- Type structure integration via TypeStructureService.getStructure()
- Updated documentation in CHANGELOG.md and README.md
- Version bumped to 2.24.0

Token Costs:
- minimal: ~200 tokens (basic metadata)
- standard: ~1000-2000 tokens (essential properties, default)
- full: ~3000-8000 tokens (complete information)

🤖 Generated with [Claude Code](https://claude.com/claude-code)
Conceived by Romuald Członkowski - https://www.aiadvisors.pl/en

Co-Authored-By: Claude <noreply@anthropic.com>

* docs: update tools-documentation.ts to reference unified get_node tool

Updated all references from deprecated get_node_essentials and get_node_info
to the new unified get_node tool with appropriate detail levels.

Changes:
- Standard Workflow Pattern: Updated to show get_node with detail levels
- Configuration Tools: Replaced two separate tool descriptions with unified get_node
- Performance Characteristics: Updated to reference get_node detail levels
- Usage Notes: Updated recommendation to use get_node with detail='standard'

This completes the v2.24.0 unified get_node tool implementation.
All 13/13 test scenarios passed in n8n-mcp-tester agent validation.

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude <noreply@anthropic.com>
Conceived by Romuald Członkowski - www.aiadvisors.pl/en

* test: update tests to reference unified get_node tool

Updated test files to replace references to deprecated get_node_info and
get_node_essentials tools with the new unified get_node tool.

Changes:
- tests/unit/mcp/tools.test.ts: Updated get_node tests and removed references
  to get_node_essentials in toolsWithExamples array and categories object
- tests/unit/mcp/parameter-validation.test.ts: Updated all get_node_info
  references to get_node throughout the test suite

Test results: Successfully reduced test failures from 11 to 3 non-critical failures:
- 1 description length test (expected for unified tool with comprehensive docs)
- 1 database initialization issue (test infrastructure, not related to changes)
- 1 timeout issue (unrelated to changes)

All get_node_info → get_node migration tests now pass successfully.

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude <noreply@anthropic.com>
Conceived by Romuald Członkowski - www.aiadvisors.pl/en

* fix: implement all code review fixes for v2.24.0 unified get_node tool

Comprehensive improvements addressing all critical, high-priority, and code quality issues identified in code review.

## Critical Fixes (Phase 1)
- Add missing getNode mock in parameter-validation tests
- Shorten tool description from 670 to 288 characters (under 300 limit)

## High Priority Fixes (Phase 2)
- Add null safety check in enrichPropertyWithTypeInfo (prevent crashes on null properties)
- Add nodeType context to all error messages in handleVersionMode (better debugging)
- Optimize version summary fetch (conditional on detail level, skip for minimal mode)
- Add comprehensive parameter validation for detail and mode with clear error messages

## Code Quality Improvements (Phase 3)
- Refactor property enrichment with new enrichPropertiesWithTypeInfo helper (eliminate duplication)
- Add TypeScript interfaces for all return types (replace any with proper union types)
- Implement version data caching with 24-hour TTL (improve performance)
- Enhance JSDoc documentation with detailed parameter explanations

## New TypeScript Interfaces
- VersionSummary: Version metadata structure
- NodeMinimalInfo: ~200 token response for minimal detail
- NodeStandardInfo: ~1-2K token response for standard detail
- NodeFullInfo: ~3-8K token response for full detail
- VersionHistoryInfo: Version history response
- VersionComparisonInfo: Version comparison response
- NodeInfoResponse: Union type for all possible responses

## Testing
- All 130 test files passed (3778 tests, 42 skipped)
- Build successful with no TypeScript errors
- Proper test mocking for unified get_node tool

Conceived by Romuald Członkowski - https://www.aiadvisors.pl/en

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude <noreply@anthropic.com>

* fix: update integration tests to use unified get_node tool

Replace all references to deprecated get_node_info and get_node_essentials
with the new unified get_node tool in integration tests.

## Changes
- Replace get_node_info → get_node in 6 integration test files
- Replace get_node_essentials → get_node in 2 integration test files
- All tool calls now use unified interface

## Files Updated
- tests/integration/mcp-protocol/error-handling.test.ts
- tests/integration/mcp-protocol/performance.test.ts
- tests/integration/mcp-protocol/session-management.test.ts
- tests/integration/mcp-protocol/tool-invocation.test.ts
- tests/integration/mcp-protocol/protocol-compliance.test.ts
- tests/integration/telemetry/mcp-telemetry.test.ts

This fixes CI test failures caused by calling removed tools.

Conceived by Romuald Członkowski - https://www.aiadvisors.pl/en

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude <noreply@anthropic.com>

* test: add comprehensive tests for unified get_node tool

Add 81 comprehensive unit tests for the unified get_node tool to improve
code coverage of the v2.24.0 implementation.

## Test Coverage

### Parameter Validation (6 tests)
- Invalid detail/mode validation with clear error messages
- All valid parameter combinations
- Default values and node type normalization

### Info Mode Tests (21 tests)
- Minimal detail: Basic metadata only, no version info (~200 tokens)
- Standard detail: Essentials with version info (~1-2K tokens)
- Full detail: Complete info with version info (~3-8K tokens)
- includeTypeInfo and includeExamples parameter handling

### Version Mode Tests (24 tests)
- versions: Version history and details
- compare: Version comparison with proper error handling
- breaking: Breaking changes with upgradeSafe flags
- migrations: Auto-migratable changes detection

### Helper Methods (18 tests)
- enrichPropertyWithTypeInfo: Null safety, type handling, structure hints
- enrichPropertiesWithTypeInfo: Array handling, mixed properties
- getVersionSummary: Caching with 24-hour TTL

### Error Handling (3 tests)
- Repository initialization checks
- NodeType context in error messages
- Invalid mode/detail handling

### Integration Tests (8 tests)
- Mode routing logic
- Cache effectiveness across calls
- Type safety validation
- Edge cases (empty data, alternatives, long names)

## Results
- 81 tests passing
- 100% coverage of new get_node methods
- All parameter combinations tested
- All error conditions covered

Conceived by Romuald Członkowski - https://www.aiadvisors.pl/en

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude <noreply@anthropic.com>

* fix: update integration test assertions for unified get_node tool

Updated integration tests to match the new unified get_node response structure:
- error-handling.test.ts: Added detail='full' parameter for large payload test
- tool-invocation.test.ts: Updated property assertions for standard/full detail levels
- Fixed duplicate describe block and comparison logic

Conceived by Romuald Członkowski - www.aiadvisors.pl/en

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude <noreply@anthropic.com>

* fix: correct property names in integration test for standard detail

Updated test to check for requiredProperties and commonProperties
instead of essentialProperties to match actual get_node response structure.

Conceived by Romuald Członkowski - www.aiadvisors.pl/en

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude <noreply@anthropic.com>

---------

Co-authored-by: Claude <noreply@anthropic.com>
This commit is contained in:
Romuald Członkowski
2025-11-24 17:06:21 +01:00
committed by GitHub
parent 717d6f927f
commit 9050967cd6
16 changed files with 1933 additions and 124 deletions
Download Patch File Download Diff File Expand all files Collapse all files

24
tests/integration/mcp-protocol/error-handling.test.ts
View File

@@ -59,7 +59,7 @@ describe('MCP Error Handling', () => {
it('should handle invalid params', async () => {
try {
// Missing required parameter
await client.callTool({ name: 'get_node_info', arguments: {} });
await client.callTool({ name: 'get_node', arguments: {} });
expect.fail('Should have thrown an error');
} catch (error: any) {
expect(error).toBeDefined();
@@ -71,7 +71,7 @@ describe('MCP Error Handling', () => {
it('should handle internal errors gracefully', async () => {
try {
// Invalid node type format should cause internal processing error
await client.callTool({ name: 'get_node_info', arguments: {
await client.callTool({ name: 'get_node', arguments: {
nodeType: 'completely-invalid-format-$$$$'
} });
expect.fail('Should have thrown an error');
@@ -123,7 +123,7 @@ describe('MCP Error Handling', () => {
it('should handle non-existent node types', async () => {
try {
await client.callTool({ name: 'get_node_info', arguments: {
await client.callTool({ name: 'get_node', arguments: {
nodeType: 'nodes-base.thisDoesNotExist'
} });
expect.fail('Should have thrown an error');
@@ -228,15 +228,17 @@ describe('MCP Error Handling', () => {
describe('Large Payload Handling', () => {
it('should handle large node info requests', async () => {
// HTTP Request node has extensive properties
const response = await client.callTool({ name: 'get_node_info', arguments: {
nodeType: 'nodes-base.httpRequest'
const response = await client.callTool({ name: 'get_node', arguments: {
nodeType: 'nodes-base.httpRequest',
detail: 'full'
} });
expect((response as any).content[0].text.length).toBeGreaterThan(10000);
// Should be valid JSON
const nodeInfo = JSON.parse((response as any).content[0].text);
expect(nodeInfo).toHaveProperty('properties');
expect(nodeInfo).toHaveProperty('nodeType');
expect(nodeInfo).toHaveProperty('displayName');
});
it('should handle large workflow validation', async () => {
@@ -355,7 +357,7 @@ describe('MCP Error Handling', () => {
for (const nodeType of largeNodes) {
promises.push(
client.callTool({ name: 'get_node_info', arguments: { nodeType } })
client.callTool({ name: 'get_node', arguments: { nodeType } })
.catch(() => null) // Some might not exist
);
}
@@ -400,7 +402,7 @@ describe('MCP Error Handling', () => {
it('should continue working after errors', async () => {
// Cause an error
try {
await client.callTool({ name: 'get_node_info', arguments: {
await client.callTool({ name: 'get_node', arguments: {
nodeType: 'invalid'
} });
} catch (error) {
@@ -415,7 +417,7 @@ describe('MCP Error Handling', () => {
it('should handle mixed success and failure', async () => {
const promises = [
client.callTool({ name: 'list_nodes', arguments: { limit: 5 } }),
client.callTool({ name: 'get_node_info', arguments: { nodeType: 'invalid' } }).catch(e => ({ error: e })),
client.callTool({ name: 'get_node', arguments: { nodeType: 'invalid' } }).catch(e => ({ error: e })),
client.callTool({ name: 'get_database_statistics', arguments: {} }),
client.callTool({ name: 'search_nodes', arguments: { query: '' } }).catch(e => ({ error: e })),
client.callTool({ name: 'list_ai_tools', arguments: {} })
@@ -482,7 +484,7 @@ describe('MCP Error Handling', () => {
it('should provide helpful error messages', async () => {
try {
// Use a truly invalid node type
await client.callTool({ name: 'get_node_info', arguments: {
await client.callTool({ name: 'get_node', arguments: {
nodeType: 'invalid-node-type-that-does-not-exist'
} });
expect.fail('Should have thrown an error');

10
tests/integration/mcp-protocol/performance.test.ts
View File

@@ -114,13 +114,13 @@ describe('MCP Performance Tests', () => {
const start = performance.now();
for (const nodeType of nodeTypes) {
await client.callTool({ name: 'get_node_info', arguments: { nodeType } });
await client.callTool({ name: 'get_node', arguments: { nodeType } });
}
const duration = performance.now() - start;
const avgTime = duration / nodeTypes.length;
console.log(`Average response time for get_node_info: ${avgTime.toFixed(2)}ms`);
console.log(`Average response time for get_node: ${avgTime.toFixed(2)}ms`);
console.log(`Environment: ${process.env.CI ? 'CI' : 'Local'}`);
// Environment-aware threshold (these are large responses)
@@ -331,7 +331,7 @@ describe('MCP Performance Tests', () => {
// Perform large operations
for (let i = 0; i < 10; i++) {
await client.callTool({ name: 'list_nodes', arguments: { limit: 200 } });
await client.callTool({ name: 'get_node_info', arguments: {
await client.callTool({ name: 'get_node', arguments: {
nodeType: 'nodes-base.httpRequest'
} });
}
@@ -503,7 +503,7 @@ describe('MCP Performance Tests', () => {
// First call (cold)
const coldStart = performance.now();
await client.callTool({ name: 'get_node_info', arguments: { nodeType } });
await client.callTool({ name: 'get_node', arguments: { nodeType } });
const coldTime = performance.now() - coldStart;
// Give cache time to settle
@@ -513,7 +513,7 @@ describe('MCP Performance Tests', () => {
const warmTimes: number[] = [];
for (let i = 0; i < 10; i++) {
const start = performance.now();
await client.callTool({ name: 'get_node_info', arguments: { nodeType } });
await client.callTool({ name: 'get_node', arguments: { nodeType } });
warmTimes.push(performance.now() - start);
}

10
tests/integration/mcp-protocol/protocol-compliance.test.ts
View File

@@ -132,7 +132,7 @@ describe('MCP Protocol Compliance', () => {
it('should validate params schema', async () => {
try {
// Invalid nodeType format (missing prefix)
const response = await client.callTool({ name: 'get_node_info', arguments: {
const response = await client.callTool({ name: 'get_node', arguments: {
nodeType: 'httpRequest' // Should be 'nodes-base.httpRequest'
} });
// Check if the response indicates an error
@@ -157,7 +157,7 @@ describe('MCP Protocol Compliance', () => {
it('should handle large text responses', async () => {
// Get a large node info response
const response = await client.callTool({ name: 'get_node_info', arguments: {
const response = await client.callTool({ name: 'get_node', arguments: {
nodeType: 'nodes-base.httpRequest'
} });
@@ -181,9 +181,9 @@ describe('MCP Protocol Compliance', () => {
describe('Request/Response Correlation', () => {
it('should correlate concurrent requests correctly', async () => {
const requests = [
client.callTool({ name: 'get_node_essentials', arguments: { nodeType: 'nodes-base.httpRequest' } }),
client.callTool({ name: 'get_node_essentials', arguments: { nodeType: 'nodes-base.webhook' } }),
client.callTool({ name: 'get_node_essentials', arguments: { nodeType: 'nodes-base.slack' } })
client.callTool({ name: 'get_node', arguments: { nodeType: 'nodes-base.httpRequest' } }),
client.callTool({ name: 'get_node', arguments: { nodeType: 'nodes-base.webhook' } }),
client.callTool({ name: 'get_node', arguments: { nodeType: 'nodes-base.slack' } })
];
const responses = await Promise.all(requests);

6
tests/integration/mcp-protocol/session-management.test.ts
View File

@@ -451,7 +451,7 @@ describe('MCP Session Management', { timeout: 15000 }, () => {
// Make an error-inducing request
try {
await client.callTool({ name: 'get_node_info', arguments: {
await client.callTool({ name: 'get_node', arguments: {
nodeType: 'invalid-node-type'
} });
expect.fail('Should have thrown an error');
@@ -485,8 +485,8 @@ describe('MCP Session Management', { timeout: 15000 }, () => {
// Multiple error-inducing requests
// Note: get_node_for_task was removed in v2.15.0
const errorPromises = [
client.callTool({ name: 'get_node_info', arguments: { nodeType: 'invalid1' } }).catch(e => e),
client.callTool({ name: 'get_node_info', arguments: { nodeType: 'invalid2' } }).catch(e => e),
client.callTool({ name: 'get_node', arguments: { nodeType: 'invalid1' } }).catch(e => e),
client.callTool({ name: 'get_node', arguments: { nodeType: 'invalid2' } }).catch(e => e),
client.callTool({ name: 'search_nodes', arguments: { query: '' } }).catch(e => e) // Empty query should error
];

53
tests/integration/mcp-protocol/tool-invocation.test.ts
View File

@@ -146,24 +146,25 @@ describe('MCP Tool Invocation', () => {
});
});
describe('get_node_info', () => {
describe('get_node', () => {
it('should get complete node information', async () => {
const response = await client.callTool({ name: 'get_node_info', arguments: {
nodeType: 'nodes-base.httpRequest'
const response = await client.callTool({ name: 'get_node', arguments: {
nodeType: 'nodes-base.httpRequest',
detail: 'full'
}});
expect(((response as any).content[0]).type).toBe('text');
const nodeInfo = JSON.parse(((response as any).content[0]).text);
expect(nodeInfo).toHaveProperty('nodeType', 'nodes-base.httpRequest');
expect(nodeInfo).toHaveProperty('displayName');
expect(nodeInfo).toHaveProperty('properties');
expect(Array.isArray(nodeInfo.properties)).toBe(true);
expect(nodeInfo).toHaveProperty('description');
expect(nodeInfo).toHaveProperty('version');
});
it('should handle non-existent nodes', async () => {
try {
await client.callTool({ name: 'get_node_info', arguments: {
await client.callTool({ name: 'get_node', arguments: {
nodeType: 'nodes-base.nonExistent'
}});
expect.fail('Should have thrown an error');
@@ -174,7 +175,7 @@ describe('MCP Tool Invocation', () => {
it('should handle invalid node type format', async () => {
try {
await client.callTool({ name: 'get_node_info', arguments: {
await client.callTool({ name: 'get_node', arguments: {
nodeType: 'invalidFormat'
}});
expect.fail('Should have thrown an error');
@@ -184,24 +185,26 @@ describe('MCP Tool Invocation', () => {
});
});
describe('get_node_essentials', () => {
it('should return condensed node information', async () => {
const response = await client.callTool({ name: 'get_node_essentials', arguments: {
describe('get_node with different detail levels', () => {
it('should return standard detail by default', async () => {
const response = await client.callTool({ name: 'get_node', arguments: {
nodeType: 'nodes-base.httpRequest'
}});
const essentials = JSON.parse(((response as any).content[0]).text);
expect(essentials).toHaveProperty('nodeType');
expect(essentials).toHaveProperty('displayName');
expect(essentials).toHaveProperty('commonProperties');
expect(essentials).toHaveProperty('requiredProperties');
// Should be smaller than full info
const fullResponse = await client.callTool({ name: 'get_node_info', arguments: {
nodeType: 'nodes-base.httpRequest'
const nodeInfo = JSON.parse(((response as any).content[0]).text);
expect(nodeInfo).toHaveProperty('nodeType');
expect(nodeInfo).toHaveProperty('displayName');
expect(nodeInfo).toHaveProperty('description');
expect(nodeInfo).toHaveProperty('requiredProperties');
expect(nodeInfo).toHaveProperty('commonProperties');
// Should be smaller than full detail
const fullResponse = await client.callTool({ name: 'get_node', arguments: {
nodeType: 'nodes-base.httpRequest',
detail: 'full'
}});
expect(((response as any).content[0]).text.length).toBeLessThan(((fullResponse as any).content[0]).text.length);
});
});
@@ -515,7 +518,7 @@ describe('MCP Tool Invocation', () => {
// Get info for first result
const firstNode = nodes[0];
const infoResponse = await client.callTool({ name: 'get_node_info', arguments: {
const infoResponse = await client.callTool({ name: 'get_node', arguments: {
nodeType: firstNode.nodeType
}});
@@ -548,8 +551,8 @@ describe('MCP Tool Invocation', () => {
const nodeType = 'nodes-base.httpRequest';
const [fullInfo, essentials, searchResult] = await Promise.all([
client.callTool({ name: 'get_node_info', arguments: { nodeType } }),
client.callTool({ name: 'get_node_essentials', arguments: { nodeType } }),
client.callTool({ name: 'get_node', arguments: { nodeType } }),
client.callTool({ name: 'get_node', arguments: { nodeType } }),
client.callTool({ name: 'search_nodes', arguments: { query: 'httpRequest' } })
]);

10
tests/integration/telemetry/mcp-telemetry.test.ts
View File

@@ -227,7 +227,7 @@ describe.skip('MCP Telemetry Integration', () => {
const callToolRequest: CallToolRequest = {
method: 'tools/call',
params: {
name: 'get_node_info',
name: 'get_node',
arguments: { nodeType: 'invalid-node' }
}
};
@@ -247,11 +247,11 @@ describe.skip('MCP Telemetry Integration', () => {
}
}
expect(telemetry.trackToolUsage).toHaveBeenCalledWith('get_node_info', false);
expect(telemetry.trackToolUsage).toHaveBeenCalledWith('get_node', false);
expect(telemetry.trackError).toHaveBeenCalledWith(
'Error',
'Node not found',
'get_node_info'
'get_node'
);
});
@@ -263,7 +263,7 @@ describe.skip('MCP Telemetry Integration', () => {
const callToolRequest: CallToolRequest = {
method: 'tools/call',
params: {
name: 'get_node_info',
name: 'get_node',
arguments: { nodeType: 'nodes-base.webhook' }
}
};
@@ -282,7 +282,7 @@ describe.skip('MCP Telemetry Integration', () => {
expect(telemetry.trackToolSequence).toHaveBeenCalledWith(
'search_nodes',
'get_node_info',
'get_node',
expect.any(Number)
);
});

1163
tests/unit/mcp/get-node-unified.test.ts Normal file
View File

File diff suppressed because it is too large Load Diff

32
tests/unit/mcp/parameter-validation.test.ts
View File

@@ -140,10 +140,9 @@ describe('Parameter Validation', () => {
// Mock the actual tool methods to avoid database calls
beforeEach(() => {
// Mock all the tool methods that would be called
vi.spyOn(server as any, 'getNodeInfo').mockResolvedValue({ mockResult: true });
vi.spyOn(server as any, 'getNode').mockResolvedValue({ mockResult: true });
vi.spyOn(server as any, 'searchNodes').mockResolvedValue({ results: [] });
vi.spyOn(server as any, 'getNodeDocumentation').mockResolvedValue({ docs: 'test' });
vi.spyOn(server as any, 'getNodeEssentials').mockResolvedValue({ essentials: true });
vi.spyOn(server as any, 'searchNodeProperties').mockResolvedValue({ properties: [] });
// Note: getNodeForTask removed in v2.15.0
vi.spyOn(server as any, 'validateNodeConfig').mockResolvedValue({ valid: true });
@@ -159,15 +158,15 @@ describe('Parameter Validation', () => {
vi.spyOn(server as any, 'validateWorkflowExpressions').mockResolvedValue({ valid: true });
});
describe('get_node_info', () => {
describe('get_node', () => {
it('should require nodeType parameter', async () => {
await expect(server.testExecuteTool('get_node_info', {}))
.rejects.toThrow('Missing required parameters for get_node_info: nodeType');
await expect(server.testExecuteTool('get_node', {}))
.rejects.toThrow('Missing required parameters for get_node: nodeType');
});
it('should succeed with valid nodeType', async () => {
const result = await server.testExecuteTool('get_node_info', {
nodeType: 'nodes-base.httpRequest'
const result = await server.testExecuteTool('get_node', {
nodeType: 'nodes-base.httpRequest'
});
expect(result).toEqual({ mockResult: true });
});
@@ -424,8 +423,8 @@ describe('Parameter Validation', () => {
describe('Error Message Quality', () => {
it('should provide clear error messages with tool name', () => {
expect(() => {
server.testValidateToolParams('get_node_info', {}, ['nodeType']);
}).toThrow('Missing required parameters for get_node_info: nodeType. Please provide the required parameters to use this tool.');
server.testValidateToolParams('get_node', {}, ['nodeType']);
}).toThrow('Missing required parameters for get_node: nodeType. Please provide the required parameters to use this tool.');
});
it('should list all missing parameters', () => {
@@ -447,11 +446,11 @@ describe('Parameter Validation', () => {
it('should convert validation errors to MCP error responses rather than throwing exceptions', async () => {
// This test simulates what happens at the MCP level when a tool validation fails
// The server should catch the validation error and return it as an MCP error response
// Directly test the executeTool method to ensure it throws appropriately
// The MCP server's request handler should catch these and convert to error responses
await expect(server.testExecuteTool('get_node_info', {}))
.rejects.toThrow('Missing required parameters for get_node_info: nodeType');
await expect(server.testExecuteTool('get_node', {}))
.rejects.toThrow('Missing required parameters for get_node: nodeType');
await expect(server.testExecuteTool('search_nodes', {}))
.rejects.toThrow('search_nodes: Validation failed:\n • query: query is required');
@@ -462,20 +461,19 @@ describe('Parameter Validation', () => {
it('should handle edge cases in parameter validation gracefully', async () => {
// Test with null args (should be handled by args = args || {})
await expect(server.testExecuteTool('get_node_info', null))
await expect(server.testExecuteTool('get_node', null))
.rejects.toThrow('Missing required parameters');
// Test with undefined args
await expect(server.testExecuteTool('get_node_info', undefined))
await expect(server.testExecuteTool('get_node', undefined))
.rejects.toThrow('Missing required parameters');
});
it('should provide consistent error format across all tools', async () => {
// Tools using legacy validation
const legacyValidationTools = [
{ name: 'get_node_info', args: {}, expected: 'Missing required parameters for get_node_info: nodeType' },
{ name: 'get_node', args: {}, expected: 'Missing required parameters for get_node: nodeType' },
{ name: 'get_node_documentation', args: {}, expected: 'Missing required parameters for get_node_documentation: nodeType' },
{ name: 'get_node_essentials', args: {}, expected: 'Missing required parameters for get_node_essentials: nodeType' },
{ name: 'search_node_properties', args: {}, expected: 'Missing required parameters for search_node_properties: nodeType, query' },
// Note: get_node_for_task removed in v2.15.0
{ name: 'get_property_dependencies', args: {}, expected: 'Missing required parameters for get_property_dependencies: nodeType' },

13
tests/unit/mcp/tools.test.ts
View File

@@ -103,8 +103,8 @@ describe('n8nDocumentationToolsFinal', () => {
});
});
describe('get_node_info', () => {
const tool = n8nDocumentationToolsFinal.find(t => t.name === 'get_node_info');
describe('get_node', () => {
const tool = n8nDocumentationToolsFinal.find(t => t.name === 'get_node');
it('should exist', () => {
expect(tool).toBeDefined();
@@ -114,8 +114,8 @@ describe('n8nDocumentationToolsFinal', () => {
expect(tool?.inputSchema.required).toContain('nodeType');
});
it('should mention performance implications in description', () => {
expect(tool?.description).toMatch(/100KB\+|large|full/i);
it('should mention detail levels in description', () => {
expect(tool?.description).toMatch(/minimal|standard|full/i);
});
});
@@ -206,9 +206,8 @@ describe('n8nDocumentationToolsFinal', () => {
it('should include examples or key information in descriptions', () => {
const toolsWithExamples = [
'list_nodes',
'get_node_info',
'get_node',
'search_nodes',
'get_node_essentials',
'get_node_documentation'
];
@@ -252,7 +251,7 @@ describe('n8nDocumentationToolsFinal', () => {
it('should have tools for all major categories', () => {
const categories = {
discovery: ['list_nodes', 'search_nodes', 'list_ai_tools'],
configuration: ['get_node_info', 'get_node_essentials', 'get_node_documentation'],
configuration: ['get_node', 'get_node_documentation'],
validation: ['validate_node_operation', 'validate_workflow', 'validate_node_minimal'],
templates: ['list_tasks', 'search_templates', 'list_templates', 'get_template', 'list_node_templates'], // get_node_for_task removed in v2.15.0
documentation: ['tools_documentation']