---
title: "performRotaryScrollInput"
description: "Executes the rotary input specified in the given [block].

The [block] receives a [RotaryInjectionScope] which provides access to rotary input injection
functions, such as [RotaryInjectionScope.rotateToScrollVertically] or
[RotaryInjectionScope.rotateToScrollHorizontally].

All events that are injected from the [block] are batched together and sent after [block] is
complete. This method blocks while the events are injected. If an error occurs during execution
of [block] or injection of the events, all (subsequent) events are dropped and the error is
thrown here.

Example of performing a scroll with three events:"
type: "function"
---

<div class='type'>Function</div>


<a id='references'></a>
<div class='sourceset sourceset-common'>Common</div>


```kotlin
fun SemanticsNodeInteraction.performRotaryScrollInput(
    block: RotaryInjectionScope.() -> Unit
): SemanticsNodeInteraction
```


Executes the rotary input specified in the given `block`.

The `block` receives a `RotaryInjectionScope` which provides access to rotary input injection
functions, such as `RotaryInjectionScope.rotateToScrollVertically` or
`RotaryInjectionScope.rotateToScrollHorizontally`.

All events that are injected from the `block` are batched together and sent after `block` is
complete. This method blocks while the events are injected. If an error occurs during execution
of `block` or injection of the events, all (subsequent) events are dropped and the error is
thrown here.

Example of performing a scroll with three events:

#### Parameters

| | |
| --- | --- |
| block | A lambda with `RotaryInjectionScope` as receiver that describes the gesture by sending all rotary scroll events. |


#### Returns

| | |
| --- | --- |
|  | The `SemanticsNodeInteraction` that is the receiver of this method |




## Code Examples
### rotaryInputScroll
```kotlin
fun rotaryInputScroll() {
    composeTestRule.onNodeWithTag("myComponent").performRotaryScrollInput {
        rotateToScrollVertically(3.0f)
        rotateToScrollVertically(10.0f)
        rotateToScrollVertically(2.0f)
    }
}
```