37 lines
849 B
Go
37 lines
849 B
Go
package state
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import (
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"testing"
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"github.com/ethereum/go-ethereum/ethdb"
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"github.com/ethereum/go-ethereum/ethutil"
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"github.com/ethereum/go-ethereum/trie"
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)
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var ZeroHash256 = make([]byte, 32)
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func TestSnapshot(t *testing.T) {
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db, _ := ethdb.NewMemDatabase()
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ethutil.ReadConfig(".ethtest", "/tmp/ethtest", "")
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ethutil.Config.Db = db
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state := New(trie.New(db, ""))
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stateObject := state.GetOrNewStateObject([]byte("aa"))
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stateObject.SetStorage(ethutil.Big("0"), ethutil.NewValue(42))
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snapshot := state.Copy()
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stateObject = state.GetStateObject([]byte("aa"))
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stateObject.SetStorage(ethutil.Big("0"), ethutil.NewValue(43))
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state.Set(snapshot)
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stateObject = state.GetStateObject([]byte("aa"))
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res := stateObject.GetStorage(ethutil.Big("0"))
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if !res.Cmp(ethutil.NewValue(42)) {
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t.Error("Expected storage 0 to be 42", res)
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}
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}
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