[API reference](https://evolu.dev/docs/api-reference) › [@evolu/common](https://evolu.dev/docs/api-reference/common) › [WebSocket](https://evolu.dev/docs/api-reference/common/WebSocket) › testCreateWebSocket

```ts
function testCreateWebSocket(options?: {
  isOpen?: boolean;
  throwOnCreate?: boolean;
}): TestCreateWebSocket;
```

Defined in: [packages/common/src/WebSocket.ts:317](https://github.com/evoluhq/evolu/blob/e7144e2bbe9069362b62dec1b64a8aa922b8f1b0/packages/common/src/WebSocket.ts#L317)