github.com/YoungNK/go-ethereum@v1.9.7/trie/database_test.go (about)

     1  // Copyright 2019 The go-ethereum Authors
     2  // This file is part of the go-ethereum library.
     3  //
     4  // The go-ethereum library is free software: you can redistribute it and/or modify
     5  // it under the terms of the GNU Lesser General Public License as published by
     6  // the Free Software Foundation, either version 3 of the License, or
     7  // (at your option) any later version.
     8  //
     9  // The go-ethereum library is distributed in the hope that it will be useful,
    10  // but WITHOUT ANY WARRANTY; without even the implied warranty of
    11  // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
    12  // GNU Lesser General Public License for more details.
    13  //
    14  // You should have received a copy of the GNU Lesser General Public License
    15  // along with the go-ethereum library. If not, see <http://www.gnu.org/licenses/>.
    16  
    17  package trie
    18  
    19  import (
    20  	"testing"
    21  
    22  	"github.com/ethereum/go-ethereum/common"
    23  	"github.com/ethereum/go-ethereum/ethdb/memorydb"
    24  )
    25  
    26  // Tests that the trie database returns a missing trie node error if attempting
    27  // to retrieve the meta root.
    28  func TestDatabaseMetarootFetch(t *testing.T) {
    29  	db := NewDatabase(memorydb.New())
    30  	if _, err := db.Node(common.Hash{}); err == nil {
    31  		t.Fatalf("metaroot retrieval succeeded")
    32  	}
    33  }