assert - Function in Compose UI Test

Asserts that the provided matcher is satisfied for this node.

Source set: Common

Added in 1.11.0-rc01

fun SemanticsNodeInteraction.assert(
    matcher: SemanticsMatcher,
    messagePrefixOnError: (() -> String)? = null,
): SemanticsNodeInteraction

Asserts that the provided matcher is satisfied for this node.


matcher	Matcher to verify.
messagePrefixOnError	Prefix to be put in front of an error that gets thrown in case this assert fails. This can be helpful in situations where this assert fails as part of a bigger operation that used this assert as a precondition check.