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core/state: fix bug in copy of copy State

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This commit is contained in:
Martin Holst Swende
2018-04-10 20:59:07 +02:00
parent 2e247705cd
commit 0c7b99b8cc
2 changed files with 26 additions and 0 deletions
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16
core/state/statedb_test.go
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@@ -422,3 +422,19 @@ func (s *StateSuite) TestTouchDelete(c *check.C) {
c.Fatal("expected no dirty state object")
}
}
// TestCopyOfCopy tests that modified objects are carried over to the copy, and the copy of the copy.
// See https://github.com/ethereum/go-ethereum/pull/15225#issuecomment-380191512
func TestCopyOfCopy(t *testing.T) {
db, _ := ethdb.NewMemDatabase()
sdb, _ := New(common.Hash{}, NewDatabase(db))
addr := common.HexToAddress("aaaa")
sdb.SetBalance(addr, big.NewInt(42))
if got := sdb.Copy().GetBalance(addr).Uint64(); got != 42 {
t.Fatalf("1st copy fail, expected 42, got %v", got)
}
if got := sdb.Copy().Copy().GetBalance(addr).Uint64(); got != 42 {
t.Fatalf("2nd copy fail, expected 42, got %v", got)
}
}