# expectEmitAnonymous

Description: expectEmitAnonymous cheatcode documentation

Note: This document was authored using MDX

  Source: https://github.com/NomicFoundation/hardhat-website/tree/main/src/content/docs/docs/reference/cheatcodes/Assertions/expect-emit-anonymous.mdx

### Signature

```solidity
function expectEmitAnonymous() external;
function expectEmitAnonymous(address emitter) external;
function expectEmitAnonymous(
  bool checkTopic0,
  bool checkTopic1,
  bool checkTopic2,
  bool checkTopic3,
  bool checkData
) external;
function expectEmitAnonymous(
  bool checkTopic0,
  bool checkTopic1,
  bool checkTopic2,
  bool checkTopic3,
  bool checkData,
  address emitter
) external;
```

### Description

Prepare an expected anonymous log. If no boolean parameter is specified, all topic and data checks are enabled.
Otherwise, `(bool checkTopic1, bool checkTopic2, bool checkTopic3, bool checkData)` control the checks.

If `emitter` is specified, it also checks supplied address against emitting contract.

Call this function, then emit an anonymous event, then call a function. Internally after the call, we check if
logs were emitted in the expected order with the expected topics and data.