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package test
import (
"Chain/pkg/block"
"Chain/pkg/blockchain/chainwriter"
"Chain/pkg/blockchain/coindatabase"
"reflect"
"testing"
)
func TestValidateValidBlock(t *testing.T) {
defer cleanUp()
genBlock := GenesisBlock()
coinDB := coindatabase.New(coindatabase.DefaultConfig())
coinDB.StoreBlock(genBlock.Transactions, true)
block1 := MakeBlockFromPrev(genBlock)
if !coinDB.ValidateBlock(block1.Transactions) {
t.Errorf("block1 should have validated")
}
}
func TestValidateInvalidBlock(t *testing.T) {
defer cleanUp()
genBlock := GenesisBlock()
coinDB := coindatabase.New(coindatabase.DefaultConfig())
coinDB.StoreBlock(genBlock.Transactions, true)
block1 := MakeBlockFromPrev(genBlock)
block2 := MakeBlockFromPrev(block1)
if coinDB.ValidateBlock(block2.Transactions) {
t.Errorf("block2 should not have validated")
}
}
func TestUndoCoins(t *testing.T) {
defer cleanUp()
genBlock := GenesisBlock()
coinDB := coindatabase.New(coindatabase.DefaultConfig())
coinDB.StoreBlock(genBlock.Transactions, true)
block1 := MakeBlockFromPrev(genBlock)
coinDB.StoreBlock(block1.Transactions, true)
block2 := MakeBlockFromPrev(block1)
ub2 := UndoBlockFromBlock(block2)
coinDB.StoreBlock(block2.Transactions, true)
coinDB.UndoCoins([]*block.Block{block2}, []*chainwriter.UndoBlock{ub2})
// make sure coins from undo block are put back
for i := 0; i < len(ub2.TransactionInputHashes); i++ {
cl := coindatabase.CoinLocator{
ReferenceTransactionHash: ub2.TransactionInputHashes[i],
OutputIndex: ub2.OutputIndexes[i],
}
coin := coinDB.GetCoin(cl)
if coin == nil {
t.Errorf("coin should exist")
} else {
if coin.IsSpent {
t.Errorf("coin should not be spent")
}
}
}
// make sure coins from block are deleted
for _, tx := range block2.Transactions {
txHash := tx.Hash()
for i := 0; i < len(tx.Outputs); i++ {
cl := coindatabase.CoinLocator{
ReferenceTransactionHash: txHash,
OutputIndex: uint32(i),
}
if coin := coinDB.GetCoin(cl); coin != nil {
t.Errorf("Coin should not exist")
}
}
}
}
func TestGetCoin(t *testing.T) {
defer cleanUp()
genBlock := GenesisBlock()
coinDB := coindatabase.New(coindatabase.DefaultConfig())
coinDB.StoreBlock(genBlock.Transactions, true)
txHash := genBlock.Transactions[0].Hash()
cl := coindatabase.CoinLocator{
ReferenceTransactionHash: txHash,
OutputIndex: 0,
}
coin := coinDB.GetCoin(cl)
if coin.IsSpent {
t.Errorf("Expected coin.IsSpent: %v\nActual coin.IsSpent:%v", false, coin.IsSpent)
}
if !reflect.DeepEqual(coin.TransactionOutput, genBlock.Transactions[0].Outputs[0]) {
t.Errorf(
"Expected transaction output: %v\nActual transactionoutput:%v",
genBlock.Transactions[0].Outputs[0],
coin.TransactionOutput,
)
}
}
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