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package l1
import (
"math/rand"
"testing"
"github.com/ethereum-optimism/optimism/op-node/testutils"
"github.com/ethereum-optimism/optimism/op-program/client/l1/test"
"github.com/ethereum-optimism/optimism/op-service/eth"
"github.com/stretchr/testify/require"
)
// Should implement Oracle
var _ Oracle = (*CachingOracle)(nil)
func TestCachingOracle_HeaderByBlockHash(t *testing.T) {
rng := rand.New(rand.NewSource(1))
stub := test.NewStubOracle(t)
oracle := NewCachingOracle(stub)
block := testutils.RandomBlockInfo(rng)
// Initial call retrieves from the stub
stub.Blocks[block.Hash()] = block
result := oracle.HeaderByBlockHash(block.Hash())
require.Equal(t, block, result)
// Later calls should retrieve from cache
delete(stub.Blocks, block.Hash())
result = oracle.HeaderByBlockHash(block.Hash())
require.Equal(t, block, result)
}
func TestCachingOracle_TransactionsByBlockHash(t *testing.T) {
rng := rand.New(rand.NewSource(1))
stub := test.NewStubOracle(t)
oracle := NewCachingOracle(stub)
block, _ := testutils.RandomBlock(rng, 3)
// Initial call retrieves from the stub
stub.Blocks[block.Hash()] = eth.BlockToInfo(block)
stub.Txs[block.Hash()] = block.Transactions()
actualBlock, actualTxs := oracle.TransactionsByBlockHash(block.Hash())
require.Equal(t, eth.BlockToInfo(block), actualBlock)
require.Equal(t, block.Transactions(), actualTxs)
// Later calls should retrieve from cache
delete(stub.Blocks, block.Hash())
delete(stub.Txs, block.Hash())
actualBlock, actualTxs = oracle.TransactionsByBlockHash(block.Hash())
require.Equal(t, eth.BlockToInfo(block), actualBlock)
require.Equal(t, block.Transactions(), actualTxs)
}
func TestCachingOracle_ReceiptsByBlockHash(t *testing.T) {
rng := rand.New(rand.NewSource(1))
stub := test.NewStubOracle(t)
oracle := NewCachingOracle(stub)
block, rcpts := testutils.RandomBlock(rng, 3)
// Initial call retrieves from the stub
stub.Blocks[block.Hash()] = eth.BlockToInfo(block)
stub.Rcpts[block.Hash()] = rcpts
actualBlock, actualRcpts := oracle.ReceiptsByBlockHash(block.Hash())
require.Equal(t, eth.BlockToInfo(block), actualBlock)
require.EqualValues(t, rcpts, actualRcpts)
// Later calls should retrieve from cache
delete(stub.Blocks, block.Hash())
delete(stub.Rcpts, block.Hash())
actualBlock, actualRcpts = oracle.ReceiptsByBlockHash(block.Hash())
require.Equal(t, eth.BlockToInfo(block), actualBlock)
require.EqualValues(t, rcpts, actualRcpts)
}