Function substrate_test_client::client::new_in_mem

pub fn new_in_mem<E, Block, S, RA>(
    executor: E, 
    genesis_storage: &S, 
    keystore: Option<Arc<dyn SyncCryptoStore + 'static>>, 
    prometheus_registry: Option<Registry>, 
    telemetry: Option<TelemetryHandle>, 
    spawn_handle: Box<dyn SpawnNamed + 'static, Global>, 
    config: ClientConfig<Block>
) -> Result<Client<Backend<Block>, LocalCallExecutor<Block, Backend<Block>, E>, Block, RA>, Error> where
    Block: Block,
    E: CodeExecutor + RuntimeVersionOf,
    S: BuildStorage, 

Create an instance of in-memory client.