InMemoryDatabaseRule

Artifact: androidx.media3:media3-test-utils

Kotlin |Java

@UnstableApi
class InMemoryDatabaseRule : TestRule

A JUnit Rule that creates (and cleans up) in-memory databases and SimpleCache instances.

Summary

Public functions
`Statement!`	`apply(base: Statement!, description: Description!)`
`java-static InMemoryDatabaseRule!`	`create()`
`DatabaseProvider!`	`createDatabaseProvider()` Returns the `DatabaseProvider` created by this rule.
`SimpleCache!`	`createSimpleCache()` Returns a `SimpleCache` created by this rule.

Public functions

apply

fun apply(base: Statement!, description: Description!): Statement!

create

java-static fun create(): InMemoryDatabaseRule!

createDatabaseProvider

fun createDatabaseProvider(): DatabaseProvider!

Returns the DatabaseProvider created by this rule.

createSimpleCache

fun createSimpleCache(): SimpleCache!

Returns a SimpleCache created by this rule.

Throws
`java.io.IOException`

Content and code samples on this page are subject to the licenses described in the Content License. Java and OpenJDK are trademarks or registered trademarks of Oracle and/or its affiliates.

Last updated 2026-07-01 UTC.

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