import assert from 'node:assert/strict';
import { it } from 'node:test';
import { ErrorCode, McpError } from '../../lib/errors.js';
void it('McpError creates error with all properties', () => {
const error = new McpError(
ErrorCode.E_ACCESS_DENIED,
'Access denied',
'/some/path',
{ extra: 'detail' }
);
assert.strictEqual(error.code, ErrorCode.E_ACCESS_DENIED);
assert.strictEqual(error.message, 'Access denied');
assert.strictEqual(error.path, '/some/path');
assert.deepStrictEqual(error.details, { extra: 'detail' });
assert.strictEqual(error.name, 'McpError');
});
void it('McpError supports cause chaining', () => {
const cause = new Error('Original error');
const error = new McpError(
ErrorCode.E_NOT_FOUND,
'File not found',
'/path',
undefined,
cause
);
assert.strictEqual(error.cause, cause);
});
void it('McpError is instanceof Error', () => {
const error = new McpError(ErrorCode.E_UNKNOWN, 'Test');
assert.strictEqual(error instanceof Error, true);
assert.strictEqual(error instanceof McpError, true);
});
void it('McpError.fromError wraps existing errors', () => {
const original = new Error('Original');
original.stack = 'Original stack trace';
const mcpError = McpError.fromError(
ErrorCode.E_NOT_FOUND,
'Wrapped error',
original,
'/path'
);
assert.strictEqual(mcpError.code, ErrorCode.E_NOT_FOUND);
assert.strictEqual(mcpError.cause, original);
assert.ok(mcpError.stack?.includes('Caused by: Original stack trace'));
});
