Compatibility with Arrow • opensavvy.prepared.compat.arrow.coroutines • preparedResource

preparedResource

fun <T> preparedResource(block: suspend TestResourceScope.() -> T): PreparedProvider<T>

Declares a prepared value that contains Arrow Resources.

The resources are released at the end of the test.

Example

val userProcessor: Resource<UserProcessor> = resource({
    UserProcessor().also { it.start() }
}) { p, _ -> p.shutdown() }

val dataSource: Resource<DataSource> = resource({
    DataSource().also { it.connect() }
}) { ds, exitCase ->
    println("Releasing $ds with exit: $exitCase")
    withContext(Dispatchers.IO) { ds.close() }
}

// Note the 'by'!
val service by preparedResource {
    Service(dataSource.bind(), userProcessor.bind())
}

test("Some kind of test") {
    service().createEntity("…")
}

External resources

• Arrow Resource documentation

See also

• TestResourceScope Overview of Prepared and Arrow's compatibility.

• asPrepared Convert a Resource into a Prepared value.

• install Install a Resource directly within a test.