public void TryAddMemoryGrainStorageForPubSub_Refuses_Null_Configuration()
{
ISiloHostBuilder builder = new SiloHostBuilder();
IConfiguration configuration = null;
var error = Assert.Throws <ArgumentNullException>(() =>
{
builder.TryAddMemoryGrainStorageForPubSub(configuration);
});
Assert.Equal("configuration", error.ParamName);
}