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743e404906
This PR introduces a node scheme abstraction. The interface is only implemented by `hashScheme` at the moment, but will be extended by `pathScheme` very soon. Apart from that, a few changes are also included which is worth mentioning: - port the changes in the stacktrie, tracking the path prefix of nodes during commit - use ethdb.Database for constructing trie.Database. This is not necessary right now, but it is required for path-based used to open reverse diff freezer
34 lines
1.2 KiB
Go
34 lines
1.2 KiB
Go
// Copyright 2019 The go-ethereum Authors
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// This file is part of the go-ethereum library.
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//
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// The go-ethereum library is free software: you can redistribute it and/or modify
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// it under the terms of the GNU Lesser General Public License as published by
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// the Free Software Foundation, either version 3 of the License, or
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// (at your option) any later version.
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//
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// The go-ethereum library is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU Lesser General Public License for more details.
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//
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// You should have received a copy of the GNU Lesser General Public License
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// along with the go-ethereum library. If not, see <http://www.gnu.org/licenses/>.
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package trie
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import (
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"testing"
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"github.com/ethereum/go-ethereum/common"
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"github.com/ethereum/go-ethereum/core/rawdb"
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)
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// Tests that the trie database returns a missing trie node error if attempting
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// to retrieve the meta root.
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func TestDatabaseMetarootFetch(t *testing.T) {
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db := NewDatabase(rawdb.NewMemoryDatabase())
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if _, err := db.Node(common.Hash{}); err == nil {
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t.Fatalf("metaroot retrieval succeeded")
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}
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}
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