Files
n8n-mcp/tests/unit/services/workflow-diff-engine.test.ts

1094 lines
33 KiB
TypeScript

import { describe, it, expect, beforeEach } from 'vitest';
import { WorkflowDiffEngine } from '@/services/workflow-diff-engine';
import { createWorkflow, WorkflowBuilder } from '@tests/utils/builders/workflow.builder';
import {
WorkflowDiffRequest,
AddNodeOperation,
RemoveNodeOperation,
UpdateNodeOperation,
MoveNodeOperation,
EnableNodeOperation,
DisableNodeOperation,
AddConnectionOperation,
RemoveConnectionOperation,
UpdateConnectionOperation,
UpdateSettingsOperation,
UpdateNameOperation,
AddTagOperation,
RemoveTagOperation
} from '@/types/workflow-diff';
import { Workflow } from '@/types/n8n-api';
describe('WorkflowDiffEngine', () => {
let diffEngine: WorkflowDiffEngine;
let baseWorkflow: Workflow;
let builder: WorkflowBuilder;
beforeEach(() => {
diffEngine = new WorkflowDiffEngine();
// Create a base workflow with some nodes
builder = createWorkflow('Test Workflow')
.addWebhookNode({ id: 'webhook-1', name: 'Webhook' })
.addHttpRequestNode({ id: 'http-1', name: 'HTTP Request' })
.addSlackNode({ id: 'slack-1', name: 'Slack' })
.connect('webhook-1', 'http-1')
.connect('http-1', 'slack-1')
.addTags('test', 'automation');
baseWorkflow = builder.build() as Workflow;
// Convert connections from ID-based to name-based (as n8n expects)
const newConnections: any = {};
for (const [nodeId, outputs] of Object.entries(baseWorkflow.connections)) {
const node = baseWorkflow.nodes.find((n: any) => n.id === nodeId);
if (node) {
newConnections[node.name] = {};
for (const [outputName, connections] of Object.entries(outputs)) {
newConnections[node.name][outputName] = (connections as any[]).map((conns: any) =>
conns.map((conn: any) => {
const targetNode = baseWorkflow.nodes.find((n: any) => n.id === conn.node);
return {
...conn,
node: targetNode ? targetNode.name : conn.node
};
})
);
}
}
}
baseWorkflow.connections = newConnections;
});
describe('Operation Limits', () => {
it('should reject more than 5 operations', async () => {
const operations = Array(6).fill(null).map((_: any, i: number) => ({
type: 'updateName',
name: `Name ${i}`
} as UpdateNameOperation));
const request: WorkflowDiffRequest = {
id: 'test-workflow',
operations
};
const result = await diffEngine.applyDiff(baseWorkflow, request);
expect(result.success).toBe(false);
expect(result.errors).toHaveLength(1);
expect(result.errors![0].message).toContain('Too many operations');
});
});
describe('AddNode Operation', () => {
it('should add a new node successfully', async () => {
const operation: AddNodeOperation = {
type: 'addNode',
node: {
name: 'New Code Node',
type: 'n8n-nodes-base.code',
position: [800, 300],
typeVersion: 2,
parameters: {
mode: 'runOnceForAllItems',
language: 'javaScript',
jsCode: 'return items;'
}
}
};
const request: WorkflowDiffRequest = {
id: 'test-workflow',
operations: [operation]
};
const result = await diffEngine.applyDiff(baseWorkflow, request);
expect(result.success).toBe(true);
expect(result.workflow!.nodes).toHaveLength(4);
expect(result.workflow!.nodes[3].name).toBe('New Code Node');
expect(result.workflow!.nodes[3].type).toBe('n8n-nodes-base.code');
expect(result.workflow!.nodes[3].id).toBeDefined();
});
it('should reject duplicate node names', async () => {
const operation: AddNodeOperation = {
type: 'addNode',
node: {
name: 'Webhook', // Duplicate name
type: 'n8n-nodes-base.webhook',
position: [800, 300]
}
};
const request: WorkflowDiffRequest = {
id: 'test-workflow',
operations: [operation]
};
const result = await diffEngine.applyDiff(baseWorkflow, request);
expect(result.success).toBe(false);
expect(result.errors![0].message).toContain('already exists');
});
it('should reject invalid node type format', async () => {
const operation: AddNodeOperation = {
type: 'addNode',
node: {
name: 'Invalid Node',
type: 'webhook', // Missing package prefix
position: [800, 300]
}
};
const request: WorkflowDiffRequest = {
id: 'test-workflow',
operations: [operation]
};
const result = await diffEngine.applyDiff(baseWorkflow, request);
expect(result.success).toBe(false);
expect(result.errors![0].message).toContain('Invalid node type');
});
it('should correct nodes-base prefix to n8n-nodes-base', async () => {
const operation: AddNodeOperation = {
type: 'addNode',
node: {
name: 'Test Node',
type: 'nodes-base.webhook', // Wrong prefix
position: [800, 300]
}
};
const request: WorkflowDiffRequest = {
id: 'test-workflow',
operations: [operation]
};
const result = await diffEngine.applyDiff(baseWorkflow, request);
expect(result.success).toBe(false);
expect(result.errors![0].message).toContain('Use "n8n-nodes-base.');
});
it('should generate node ID if not provided', async () => {
const operation: AddNodeOperation = {
type: 'addNode',
node: {
name: 'No ID Node',
type: 'n8n-nodes-base.code',
position: [800, 300]
}
};
const request: WorkflowDiffRequest = {
id: 'test-workflow',
operations: [operation]
};
const result = await diffEngine.applyDiff(baseWorkflow, request);
expect(result.success).toBe(true);
expect(result.workflow!.nodes[3].id).toBeDefined();
expect(result.workflow!.nodes[3].id).toMatch(/^[0-9a-f-]+$/);
});
});
describe('RemoveNode Operation', () => {
it('should remove node by ID', async () => {
const operation: RemoveNodeOperation = {
type: 'removeNode',
nodeId: 'http-1'
};
const request: WorkflowDiffRequest = {
id: 'test-workflow',
operations: [operation]
};
const result = await diffEngine.applyDiff(baseWorkflow, request);
expect(result.success).toBe(true);
expect(result.workflow!.nodes).toHaveLength(2);
expect(result.workflow!.nodes.find((n: any) => n.id === 'http-1')).toBeUndefined();
});
it('should remove node by name', async () => {
const operation: RemoveNodeOperation = {
type: 'removeNode',
nodeName: 'HTTP Request'
};
const request: WorkflowDiffRequest = {
id: 'test-workflow',
operations: [operation]
};
const result = await diffEngine.applyDiff(baseWorkflow, request);
expect(result.success).toBe(true);
expect(result.workflow!.nodes).toHaveLength(2);
expect(result.workflow!.nodes.find((n: any) => n.name === 'HTTP Request')).toBeUndefined();
});
it('should clean up connections when removing node', async () => {
const operation: RemoveNodeOperation = {
type: 'removeNode',
nodeId: 'http-1'
};
const request: WorkflowDiffRequest = {
id: 'test-workflow',
operations: [operation]
};
const result = await diffEngine.applyDiff(baseWorkflow, request);
expect(result.success).toBe(true);
expect(result.workflow!.connections['HTTP Request']).toBeUndefined();
// Check that connections from Webhook were cleaned up
if (result.workflow!.connections['Webhook'] && result.workflow!.connections['Webhook'].main && result.workflow!.connections['Webhook'].main[0]) {
expect(result.workflow!.connections['Webhook'].main[0]).toHaveLength(0);
} else {
// Webhook connections should be cleaned up entirely
expect(result.workflow!.connections['Webhook']).toBeUndefined();
}
});
it('should reject removing non-existent node', async () => {
const operation: RemoveNodeOperation = {
type: 'removeNode',
nodeId: 'non-existent'
};
const request: WorkflowDiffRequest = {
id: 'test-workflow',
operations: [operation]
};
const result = await diffEngine.applyDiff(baseWorkflow, request);
expect(result.success).toBe(false);
expect(result.errors![0].message).toContain('Node not found');
});
});
describe('UpdateNode Operation', () => {
it('should update node parameters', async () => {
const operation: UpdateNodeOperation = {
type: 'updateNode',
nodeId: 'http-1',
changes: {
'parameters.method': 'POST',
'parameters.url': 'https://new-api.example.com'
}
};
const request: WorkflowDiffRequest = {
id: 'test-workflow',
operations: [operation]
};
const result = await diffEngine.applyDiff(baseWorkflow, request);
expect(result.success).toBe(true);
const updatedNode = result.workflow!.nodes.find((n: any) => n.id === 'http-1');
expect(updatedNode!.parameters.method).toBe('POST');
expect(updatedNode!.parameters.url).toBe('https://new-api.example.com');
});
it('should update nested properties using dot notation', async () => {
const operation: UpdateNodeOperation = {
type: 'updateNode',
nodeName: 'Slack',
changes: {
'parameters.resource': 'channel',
'parameters.operation': 'create',
'credentials.slackApi.name': 'New Slack Account'
}
};
const request: WorkflowDiffRequest = {
id: 'test-workflow',
operations: [operation]
};
const result = await diffEngine.applyDiff(baseWorkflow, request);
expect(result.success).toBe(true);
const updatedNode = result.workflow!.nodes.find((n: any) => n.name === 'Slack');
expect(updatedNode!.parameters.resource).toBe('channel');
expect(updatedNode!.parameters.operation).toBe('create');
expect((updatedNode!.credentials as any).slackApi.name).toBe('New Slack Account');
});
it('should reject updating non-existent node', async () => {
const operation: UpdateNodeOperation = {
type: 'updateNode',
nodeId: 'non-existent',
changes: {
'parameters.test': 'value'
}
};
const request: WorkflowDiffRequest = {
id: 'test-workflow',
operations: [operation]
};
const result = await diffEngine.applyDiff(baseWorkflow, request);
expect(result.success).toBe(false);
expect(result.errors![0].message).toContain('Node not found');
});
});
describe('MoveNode Operation', () => {
it('should move node to new position', async () => {
const operation: MoveNodeOperation = {
type: 'moveNode',
nodeId: 'http-1',
position: [1000, 500]
};
const request: WorkflowDiffRequest = {
id: 'test-workflow',
operations: [operation]
};
const result = await diffEngine.applyDiff(baseWorkflow, request);
expect(result.success).toBe(true);
const movedNode = result.workflow!.nodes.find((n: any) => n.id === 'http-1');
expect(movedNode!.position).toEqual([1000, 500]);
});
it('should move node by name', async () => {
const operation: MoveNodeOperation = {
type: 'moveNode',
nodeName: 'Webhook',
position: [100, 100]
};
const request: WorkflowDiffRequest = {
id: 'test-workflow',
operations: [operation]
};
const result = await diffEngine.applyDiff(baseWorkflow, request);
expect(result.success).toBe(true);
const movedNode = result.workflow!.nodes.find((n: any) => n.name === 'Webhook');
expect(movedNode!.position).toEqual([100, 100]);
});
});
describe('Enable/Disable Node Operations', () => {
it('should disable a node', async () => {
const operation: DisableNodeOperation = {
type: 'disableNode',
nodeId: 'http-1'
};
const request: WorkflowDiffRequest = {
id: 'test-workflow',
operations: [operation]
};
const result = await diffEngine.applyDiff(baseWorkflow, request);
expect(result.success).toBe(true);
const disabledNode = result.workflow!.nodes.find((n: any) => n.id === 'http-1');
expect(disabledNode!.disabled).toBe(true);
});
it('should enable a disabled node', async () => {
// First disable the node
baseWorkflow.nodes[1].disabled = true;
const operation: EnableNodeOperation = {
type: 'enableNode',
nodeId: 'http-1'
};
const request: WorkflowDiffRequest = {
id: 'test-workflow',
operations: [operation]
};
const result = await diffEngine.applyDiff(baseWorkflow, request);
expect(result.success).toBe(true);
const enabledNode = result.workflow!.nodes.find((n: any) => n.id === 'http-1');
expect(enabledNode!.disabled).toBe(false);
});
});
describe('AddConnection Operation', () => {
it('should add a new connection', async () => {
// First add a new node to connect to
const addNodeOp: AddNodeOperation = {
type: 'addNode',
node: {
name: 'Code',
type: 'n8n-nodes-base.code',
position: [1000, 300]
}
};
const addConnectionOp: AddConnectionOperation = {
type: 'addConnection',
source: 'slack-1',
target: 'Code'
};
const request: WorkflowDiffRequest = {
id: 'test-workflow',
operations: [addNodeOp, addConnectionOp]
};
const result = await diffEngine.applyDiff(baseWorkflow, request);
expect(result.success).toBe(true);
expect(result.workflow!.connections['Slack']).toBeDefined();
expect(result.workflow!.connections['Slack'].main[0]).toHaveLength(1);
expect(result.workflow!.connections['Slack'].main[0][0].node).toBe('Code');
});
it('should reject duplicate connections', async () => {
const operation: AddConnectionOperation = {
type: 'addConnection',
source: 'Webhook', // Use node name not ID
target: 'HTTP Request' // Use node name not ID
};
const request: WorkflowDiffRequest = {
id: 'test-workflow',
operations: [operation]
};
const result = await diffEngine.applyDiff(baseWorkflow, request);
expect(result.success).toBe(false);
expect(result.errors![0].message).toContain('Connection already exists');
});
it('should reject connection to non-existent source node', async () => {
const operation: AddConnectionOperation = {
type: 'addConnection',
source: 'non-existent',
target: 'http-1'
};
const request: WorkflowDiffRequest = {
id: 'test-workflow',
operations: [operation]
};
const result = await diffEngine.applyDiff(baseWorkflow, request);
expect(result.success).toBe(false);
expect(result.errors![0].message).toContain('Source node not found');
});
it('should reject connection to non-existent target node', async () => {
const operation: AddConnectionOperation = {
type: 'addConnection',
source: 'webhook-1',
target: 'non-existent'
};
const request: WorkflowDiffRequest = {
id: 'test-workflow',
operations: [operation]
};
const result = await diffEngine.applyDiff(baseWorkflow, request);
expect(result.success).toBe(false);
expect(result.errors![0].message).toContain('Target node not found');
});
it('should support custom output and input types', async () => {
// Add an IF node that has multiple outputs
const addNodeOp: AddNodeOperation = {
type: 'addNode',
node: {
name: 'IF',
type: 'n8n-nodes-base.if',
position: [600, 400]
}
};
const addConnectionOp: AddConnectionOperation = {
type: 'addConnection',
source: 'IF',
target: 'slack-1',
sourceOutput: 'false',
targetInput: 'main',
sourceIndex: 0,
targetIndex: 0
};
const request: WorkflowDiffRequest = {
id: 'test-workflow',
operations: [addNodeOp, addConnectionOp]
};
const result = await diffEngine.applyDiff(baseWorkflow, request);
expect(result.success).toBe(true);
expect(result.workflow!.connections['IF'].false).toBeDefined();
expect(result.workflow!.connections['IF'].false[0][0].node).toBe('Slack');
});
});
describe('RemoveConnection Operation', () => {
it('should remove an existing connection', async () => {
const operation: RemoveConnectionOperation = {
type: 'removeConnection',
source: 'Webhook', // Use node name
target: 'HTTP Request' // Use node name
};
const request: WorkflowDiffRequest = {
id: 'test-workflow',
operations: [operation]
};
const result = await diffEngine.applyDiff(baseWorkflow, request);
expect(result.success).toBe(true);
// After removing the connection, the array should be empty or cleaned up
if (result.workflow!.connections['Webhook']) {
if (result.workflow!.connections['Webhook'].main && result.workflow!.connections['Webhook'].main.length > 0) {
expect(result.workflow!.connections['Webhook'].main[0]).toHaveLength(0);
} else {
expect(result.workflow!.connections['Webhook'].main).toHaveLength(0);
}
} else {
// Connection was cleaned up entirely
expect(result.workflow!.connections['Webhook']).toBeUndefined();
}
});
it('should reject removing non-existent connection', async () => {
const operation: RemoveConnectionOperation = {
type: 'removeConnection',
source: 'Slack', // Use node name
target: 'Webhook' // Use node name
};
const request: WorkflowDiffRequest = {
id: 'test-workflow',
operations: [operation]
};
const result = await diffEngine.applyDiff(baseWorkflow, request);
expect(result.success).toBe(false);
expect(result.errors![0].message).toContain('No connections found');
});
});
describe('UpdateConnection Operation', () => {
it('should update connection properties', async () => {
// Add an IF node with multiple outputs
const addNodeOp: AddNodeOperation = {
type: 'addNode',
node: {
name: 'IF',
type: 'n8n-nodes-base.if',
position: [600, 300]
}
};
const addConnectionOp: AddConnectionOperation = {
type: 'addConnection',
source: 'IF',
target: 'slack-1',
sourceOutput: 'true'
};
const updateConnectionOp: UpdateConnectionOperation = {
type: 'updateConnection',
source: 'IF',
target: 'slack-1',
changes: {
sourceOutput: 'false',
sourceIndex: 0,
targetIndex: 0
}
};
const request: WorkflowDiffRequest = {
id: 'test-workflow',
operations: [addNodeOp, addConnectionOp, updateConnectionOp]
};
const result = await diffEngine.applyDiff(baseWorkflow, request);
expect(result.success).toBe(true);
// After update, the connection should be on 'false' output only
expect(result.workflow!.connections['IF'].false).toBeDefined();
expect(result.workflow!.connections['IF'].false[0][0].node).toBe('Slack');
// The 'true' output should still have the original connection
// because updateConnection removes using the NEW output values, not the old ones
expect(result.workflow!.connections['IF'].true).toBeDefined();
expect(result.workflow!.connections['IF'].true[0][0].node).toBe('Slack');
});
});
describe('UpdateSettings Operation', () => {
it('should update workflow settings', async () => {
const operation: UpdateSettingsOperation = {
type: 'updateSettings',
settings: {
executionOrder: 'v0',
timezone: 'America/New_York',
executionTimeout: 300
}
};
const request: WorkflowDiffRequest = {
id: 'test-workflow',
operations: [operation]
};
const result = await diffEngine.applyDiff(baseWorkflow, request);
expect(result.success).toBe(true);
expect(result.workflow!.settings!.executionOrder).toBe('v0');
expect(result.workflow!.settings!.timezone).toBe('America/New_York');
expect(result.workflow!.settings!.executionTimeout).toBe(300);
});
it('should create settings object if not exists', async () => {
delete baseWorkflow.settings;
const operation: UpdateSettingsOperation = {
type: 'updateSettings',
settings: {
saveManualExecutions: false
}
};
const request: WorkflowDiffRequest = {
id: 'test-workflow',
operations: [operation]
};
const result = await diffEngine.applyDiff(baseWorkflow, request);
expect(result.success).toBe(true);
expect(result.workflow!.settings).toBeDefined();
expect(result.workflow!.settings!.saveManualExecutions).toBe(false);
});
});
describe('UpdateName Operation', () => {
it('should update workflow name', async () => {
const operation: UpdateNameOperation = {
type: 'updateName',
name: 'Updated Workflow Name'
};
const request: WorkflowDiffRequest = {
id: 'test-workflow',
operations: [operation]
};
const result = await diffEngine.applyDiff(baseWorkflow, request);
expect(result.success).toBe(true);
expect(result.workflow!.name).toBe('Updated Workflow Name');
});
});
describe('Tag Operations', () => {
it('should add a new tag', async () => {
const operation: AddTagOperation = {
type: 'addTag',
tag: 'production'
};
const request: WorkflowDiffRequest = {
id: 'test-workflow',
operations: [operation]
};
const result = await diffEngine.applyDiff(baseWorkflow, request);
expect(result.success).toBe(true);
expect(result.workflow!.tags).toContain('production');
expect(result.workflow!.tags).toHaveLength(3);
});
it('should not add duplicate tags', async () => {
const operation: AddTagOperation = {
type: 'addTag',
tag: 'test' // Already exists
};
const request: WorkflowDiffRequest = {
id: 'test-workflow',
operations: [operation]
};
const result = await diffEngine.applyDiff(baseWorkflow, request);
expect(result.success).toBe(true);
expect(result.workflow!.tags).toHaveLength(2); // No change
});
it('should create tags array if not exists', async () => {
delete baseWorkflow.tags;
const operation: AddTagOperation = {
type: 'addTag',
tag: 'new-tag'
};
const request: WorkflowDiffRequest = {
id: 'test-workflow',
operations: [operation]
};
const result = await diffEngine.applyDiff(baseWorkflow, request);
expect(result.success).toBe(true);
expect(result.workflow!.tags).toBeDefined();
expect(result.workflow!.tags).toEqual(['new-tag']);
});
it('should remove an existing tag', async () => {
const operation: RemoveTagOperation = {
type: 'removeTag',
tag: 'test'
};
const request: WorkflowDiffRequest = {
id: 'test-workflow',
operations: [operation]
};
const result = await diffEngine.applyDiff(baseWorkflow, request);
expect(result.success).toBe(true);
expect(result.workflow!.tags).not.toContain('test');
expect(result.workflow!.tags).toHaveLength(1);
});
it('should handle removing non-existent tag gracefully', async () => {
const operation: RemoveTagOperation = {
type: 'removeTag',
tag: 'non-existent'
};
const request: WorkflowDiffRequest = {
id: 'test-workflow',
operations: [operation]
};
const result = await diffEngine.applyDiff(baseWorkflow, request);
expect(result.success).toBe(true);
expect(result.workflow!.tags).toHaveLength(2); // No change
});
});
describe('ValidateOnly Mode', () => {
it('should validate without applying changes', async () => {
const operation: UpdateNameOperation = {
type: 'updateName',
name: 'Validated But Not Applied'
};
const request: WorkflowDiffRequest = {
id: 'test-workflow',
operations: [operation],
validateOnly: true
};
const result = await diffEngine.applyDiff(baseWorkflow, request);
expect(result.success).toBe(true);
expect(result.message).toContain('Validation successful');
expect(result.workflow).toBeUndefined();
});
it('should return validation errors in validateOnly mode', async () => {
const operation: RemoveNodeOperation = {
type: 'removeNode',
nodeId: 'non-existent'
};
const request: WorkflowDiffRequest = {
id: 'test-workflow',
operations: [operation],
validateOnly: true
};
const result = await diffEngine.applyDiff(baseWorkflow, request);
expect(result.success).toBe(false);
expect(result.errors![0].message).toContain('Node not found');
});
});
describe('Operation Ordering', () => {
it('should process node operations before connection operations', async () => {
// This tests the two-pass processing: nodes first, then connections
const operations = [
{
type: 'addConnection',
source: 'NewNode',
target: 'slack-1'
} as AddConnectionOperation,
{
type: 'addNode',
node: {
name: 'NewNode',
type: 'n8n-nodes-base.code',
position: [800, 300]
}
} as AddNodeOperation
];
const request: WorkflowDiffRequest = {
id: 'test-workflow',
operations
};
const result = await diffEngine.applyDiff(baseWorkflow, request);
expect(result.success).toBe(true);
expect(result.workflow!.nodes).toHaveLength(4);
expect(result.workflow!.connections['NewNode']).toBeDefined();
});
it('should handle dependent operations correctly', async () => {
const operations = [
{
type: 'removeNode',
nodeId: 'http-1'
} as RemoveNodeOperation,
{
type: 'addNode',
node: {
name: 'HTTP Request', // Reuse the same name
type: 'n8n-nodes-base.httpRequest',
position: [600, 300]
}
} as AddNodeOperation,
{
type: 'addConnection',
source: 'webhook-1',
target: 'HTTP Request'
} as AddConnectionOperation
];
const request: WorkflowDiffRequest = {
id: 'test-workflow',
operations
};
const result = await diffEngine.applyDiff(baseWorkflow, request);
expect(result.success).toBe(true);
expect(result.workflow!.nodes).toHaveLength(3);
expect(result.workflow!.connections['Webhook'].main[0][0].node).toBe('HTTP Request');
});
});
describe('Error Handling', () => {
it('should handle unknown operation type', async () => {
const operation = {
type: 'unknownOperation',
someData: 'test'
} as any;
const request: WorkflowDiffRequest = {
id: 'test-workflow',
operations: [operation]
};
const result = await diffEngine.applyDiff(baseWorkflow, request);
expect(result.success).toBe(false);
expect(result.errors![0].message).toContain('Unknown operation type');
});
it('should stop on first validation error', async () => {
const operations = [
{
type: 'removeNode',
nodeId: 'non-existent'
} as RemoveNodeOperation,
{
type: 'updateName',
name: 'This should not be applied'
} as UpdateNameOperation
];
const request: WorkflowDiffRequest = {
id: 'test-workflow',
operations
};
const result = await diffEngine.applyDiff(baseWorkflow, request);
expect(result.success).toBe(false);
expect(result.errors).toHaveLength(1);
expect(result.errors![0].operation).toBe(0);
});
it('should return operation details in error', async () => {
const operation: RemoveNodeOperation = {
type: 'removeNode',
nodeId: 'non-existent',
description: 'Test remove operation'
};
const request: WorkflowDiffRequest = {
id: 'test-workflow',
operations: [operation]
};
const result = await diffEngine.applyDiff(baseWorkflow, request);
expect(result.success).toBe(false);
expect(result.errors![0].details).toEqual(operation);
});
});
describe('Complex Scenarios', () => {
it('should handle multiple operations of different types', async () => {
const operations = [
{
type: 'updateName',
name: 'Complex Workflow'
} as UpdateNameOperation,
{
type: 'addNode',
node: {
name: 'Filter',
type: 'n8n-nodes-base.filter',
position: [800, 200]
}
} as AddNodeOperation,
{
type: 'removeConnection',
source: 'HTTP Request', // Use node name
target: 'Slack' // Use node name
} as RemoveConnectionOperation,
{
type: 'addConnection',
source: 'HTTP Request', // Use node name
target: 'Filter'
} as AddConnectionOperation,
{
type: 'addConnection',
source: 'Filter',
target: 'Slack' // Use node name
} as AddConnectionOperation
];
const request: WorkflowDiffRequest = {
id: 'test-workflow',
operations
};
const result = await diffEngine.applyDiff(baseWorkflow, request);
expect(result.success).toBe(true);
expect(result.workflow!.name).toBe('Complex Workflow');
expect(result.workflow!.nodes).toHaveLength(4);
expect(result.workflow!.connections['HTTP Request'].main[0][0].node).toBe('Filter');
expect(result.workflow!.connections['Filter'].main[0][0].node).toBe('Slack');
expect(result.operationsApplied).toBe(5);
});
it('should preserve workflow immutability', async () => {
const originalNodes = [...baseWorkflow.nodes];
const originalConnections = JSON.stringify(baseWorkflow.connections);
const operation: UpdateNameOperation = {
type: 'updateName',
name: 'Modified'
};
const request: WorkflowDiffRequest = {
id: 'test-workflow',
operations: [operation]
};
await diffEngine.applyDiff(baseWorkflow, request);
// Original workflow should remain unchanged
expect(baseWorkflow.name).toBe('Test Workflow');
expect(baseWorkflow.nodes).toEqual(originalNodes);
expect(JSON.stringify(baseWorkflow.connections)).toBe(originalConnections);
});
it('should handle node ID as name fallback', async () => {
// Test the findNode helper's fallback behavior
const operation: UpdateNodeOperation = {
type: 'updateNode',
nodeId: 'Webhook', // Using name as ID
changes: {
'parameters.path': 'new-webhook-path'
}
};
const request: WorkflowDiffRequest = {
id: 'test-workflow',
operations: [operation]
};
const result = await diffEngine.applyDiff(baseWorkflow, request);
expect(result.success).toBe(true);
const updatedNode = result.workflow!.nodes.find((n: any) => n.name === 'Webhook');
expect(updatedNode!.parameters.path).toBe('new-webhook-path');
});
});
describe('Success Messages', () => {
it('should provide informative success message', async () => {
const operations = [
{
type: 'addNode',
node: {
name: 'Node1',
type: 'n8n-nodes-base.code',
position: [100, 100]
}
} as AddNodeOperation,
{
type: 'updateSettings',
settings: { timezone: 'UTC' }
} as UpdateSettingsOperation,
{
type: 'addTag',
tag: 'v2'
} as AddTagOperation
];
const request: WorkflowDiffRequest = {
id: 'test-workflow',
operations
};
const result = await diffEngine.applyDiff(baseWorkflow, request);
expect(result.success).toBe(true);
expect(result.message).toContain('Successfully applied 3 operations');
expect(result.message).toContain('1 node ops');
expect(result.message).toContain('2 other ops');
});
});
});