Function createMockChildProcess

packages/cli/src/utils/relaunch.test.ts:354–387

* Creates a mock child process that emits events asynchronously

(
  exitCode: number = 0,
  autoClose: boolean = false,
)

 * Creates a mock child process that emits events asynchronously
 */
function createMockChildProcess(
  exitCode: number = 0,
  autoClose: boolean = false,
): ChildProcess {
  const mockChild = new EventEmitter() as ChildProcess;

  Object.assign(mockChild, {
    stdin: null,
    stdout: null,
    stderr: null,
    stdio: [null, null, null],
    pid: 12345,
    killed: false,
    exitCode: null,
    signalCode: null,
    spawnargs: [],
    spawnfile: '',
    kill: vi.fn(),
    send: vi.fn(),
    disconnect: vi.fn(),
    unref: vi.fn(),
    ref: vi.fn(),
    on: mockChild.on.bind(mockChild),
    emit: mockChild.emit.bind(mockChild),
  });

  if (autoClose) {
    setImmediate(() => {
      mockChild.emit('close', exitCode);
    });
  }

  return mockChild;
}