import assert from 'node:assert/strict';
import { constants as osConstants } from 'node:os';
import { it } from 'node:test';
import { createDetailedError, ErrorCode, McpError } from '../../lib/errors.js';
void it('createDetailedError classifies ENOENT messages as not found', () => {
const detailed = createDetailedError(
new Error('ENOENT: no such file or directory')
);
assert.strictEqual(detailed.code, ErrorCode.E_NOT_FOUND);
});
void it('createDetailedError classifies unknown message-only errors as unknown', () => {
const detailed = createDetailedError(new Error('Some random error'));
assert.strictEqual(detailed.code, ErrorCode.E_UNKNOWN);
});
void it('createDetailedError classifies string ENOENT errors as not found', () => {
const detailed = createDetailedError('ENOENT error');
assert.strictEqual(detailed.code, ErrorCode.E_NOT_FOUND);
});
void it('createDetailedError classifies non-Error objects as unknown', () => {
const detailed = createDetailedError({ message: 'permission denied' });
assert.strictEqual(detailed.code, ErrorCode.E_UNKNOWN);
});
void it('createDetailedError classifies permission denied messages', () => {
const detailed = createDetailedError(new Error('Permission denied'));
assert.strictEqual(detailed.code, ErrorCode.E_PERMISSION_DENIED);
});
void it('createDetailedError classifies not-a-directory messages', () => {
const detailed = createDetailedError(new Error('Not a directory'));
assert.strictEqual(detailed.code, ErrorCode.E_NOT_DIRECTORY);
});
void it('createDetailedError classifies is-a-directory messages', () => {
const detailed = createDetailedError(new Error('Is a directory'));
assert.strictEqual(detailed.code, ErrorCode.E_NOT_FILE);
});
void it('createDetailedError classifies EACCES as permission denied', () => {
const detailed = createDetailedError(
Object.assign(new Error('permission denied'), { code: 'EACCES' })
);
assert.strictEqual(detailed.code, ErrorCode.E_PERMISSION_DENIED);
});
void it('createDetailedError classifies EPERM as permission denied', () => {
const detailed = createDetailedError(
Object.assign(new Error('operation not permitted'), { code: 'EPERM' })
);
assert.strictEqual(detailed.code, ErrorCode.E_PERMISSION_DENIED);
});
void it('createDetailedError classifies EISDIR as not file', () => {
const detailed = createDetailedError(
Object.assign(new Error('is a directory'), { code: 'EISDIR' })
);
assert.strictEqual(detailed.code, ErrorCode.E_NOT_FILE);
});
void it('createDetailedError classifies ENOTDIR as not directory', () => {
const detailed = createDetailedError(
Object.assign(new Error('not a directory'), { code: 'ENOTDIR' })
);
assert.strictEqual(detailed.code, ErrorCode.E_NOT_DIRECTORY);
});
void it('createDetailedError classifies ELOOP as symlink not allowed', () => {
const detailed = createDetailedError(
Object.assign(new Error('too many symbolic links'), { code: 'ELOOP' })
);
assert.strictEqual(detailed.code, ErrorCode.E_SYMLINK_NOT_ALLOWED);
});
void it('createDetailedError classifies ETIMEDOUT as timeout', () => {
const detailed = createDetailedError(
Object.assign(new Error('operation timed out'), { code: 'ETIMEDOUT' })
);
assert.strictEqual(detailed.code, ErrorCode.E_TIMEOUT);
});
void it('createDetailedError uses McpError direct code', () => {
const detailed = createDetailedError(
new McpError(ErrorCode.E_TOO_LARGE, 'File too large', '/path/to/file')
);
assert.strictEqual(detailed.code, ErrorCode.E_TOO_LARGE);
});
void it('createDetailedError classifies timeout errors in cause chains', () => {
const timeoutCause = new Error('operation timed out');
timeoutCause.name = 'TimeoutError';
const wrapped = new Error('outer wrapper', { cause: timeoutCause });
const detailed = createDetailedError(wrapped);
assert.strictEqual(detailed.code, ErrorCode.E_TIMEOUT);
});
void it('createDetailedError classifies ABORT_ERR in cause chains as timeout', () => {
const abortCause = Object.assign(new Error('aborted'), { code: 'ABORT_ERR' });
const wrapped = new Error('outer wrapper', { cause: abortCause });
const detailed = createDetailedError(wrapped);
assert.strictEqual(detailed.code, ErrorCode.E_TIMEOUT);
});
void it('createDetailedError maps errno-only errors via system errno name', () => {
const enoent = osConstants.errno.ENOENT;
if (typeof enoent !== 'number') return;
const errnoOnly = Object.assign(new Error('missing'), { errno: enoent });
const detailed = createDetailedError(errnoOnly);
assert.strictEqual(detailed.code, ErrorCode.E_NOT_FOUND);
});
