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[Home](./index.md) &gt; [@contract-case/case-boundary](./case-boundary.md) &gt; [ITriggerFunction](./case-boundary.itriggerfunction.md)

## ITriggerFunction interface

Interface called by ContractCase to invoke user's test code.

**Signature:**

```typescript
export interface ITriggerFunction
```

## Methods

| Method                                                         | Description                                                 |
| -------------------------------------------------------------- | ----------------------------------------------------------- |
| [trigger(config)](./case-boundary.itriggerfunction.trigger.md) | Trigger the user's test code and test the response from it. |