@Test
public void testListUnknownSchema()
{
assertNull(metadata.getTableHandle(SESSION, new SchemaTableName("totally_invalid_database_name", "dual")));
assertEquals(metadata.listTables(SESSION, "totally_invalid_database_name"), ImmutableList.of());
assertEquals(metadata.listTableColumns(SESSION, new SchemaTablePrefix("totally_invalid_database_name", "dual")), ImmutableMap.of());
}