109 lines
2.9 KiB
Go
109 lines
2.9 KiB
Go
package extractor_test
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import (
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"testing"
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"math/big"
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"math/rand"
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b "github.com/ethereum/go-ethereum/statediff/builder"
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e "github.com/ethereum/go-ethereum/statediff/extractor"
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"github.com/ethereum/go-ethereum/core/types"
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"bytes"
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"reflect"
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"github.com/ethereum/go-ethereum/statediff/testhelpers/mocks"
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)
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var publisher mocks.Publisher
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var builder mocks.Builder
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var currentBlockNumber *big.Int
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var parentBlock, currentBlock *types.Block
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var expectedStateDiff b.StateDiff
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var extractor e.Extractor
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var err error
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func TestExtractor(t *testing.T) {
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publisher = mocks.Publisher{}
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builder = mocks.Builder{}
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extractor, err = e.NewExtractor(&builder, &publisher)
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if err != nil {
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t.Error(err)
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}
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blockNumber := rand.Int63()
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parentBlockNumber := big.NewInt(blockNumber - int64(1))
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currentBlockNumber = big.NewInt(blockNumber)
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parentBlock = types.NewBlock(&types.Header{Number: parentBlockNumber}, nil, nil, nil)
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currentBlock = types.NewBlock(&types.Header{Number: currentBlockNumber}, nil, nil, nil)
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expectedStateDiff = b.StateDiff{
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BlockNumber: blockNumber,
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BlockHash: currentBlock.Hash(),
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CreatedAccounts: nil,
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DeletedAccounts: nil,
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UpdatedAccounts: nil,
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}
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testBuildStateDiffStruct(t)
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testBuildStateDiffErrorHandling(t)
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testPublishingStateDiff(t)
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testPublisherErrorHandling(t)
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}
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func testBuildStateDiffStruct(t *testing.T) {
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builder.SetStateDiffToBuild(&expectedStateDiff)
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_, err = extractor.ExtractStateDiff(*parentBlock, *currentBlock)
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if err != nil {
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t.Error(err)
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}
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if !equals(builder.OldStateRoot, parentBlock.Root()) { t.Error()}
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if !equals(builder.NewStateRoot, currentBlock.Root()) { t.Error()}
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if !equals(builder.BlockNumber,currentBlockNumber.Int64()) { t.Error()}
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if !equals(builder.BlockHash, currentBlock.Hash()) { t.Error()}
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}
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func testBuildStateDiffErrorHandling(t *testing.T) {
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builder.SetBuilderError(mocks.Error)
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_, err = extractor.ExtractStateDiff(*parentBlock, *currentBlock)
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if err == nil {
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t.Error(err)
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}
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if !equals(err, mocks.Error) { t.Error() }
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builder.SetBuilderError(nil)
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}
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func testPublishingStateDiff(t *testing.T) {
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builder.SetStateDiffToBuild(&expectedStateDiff)
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_, err = extractor.ExtractStateDiff(*parentBlock, *currentBlock)
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if err != nil {
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t.Error(err)
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}
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if !equals(publisher.StateDiff, &expectedStateDiff) { t.Error() }
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}
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func testPublisherErrorHandling(t *testing.T) {
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publisher.SetPublisherError(mocks.Error)
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_, err = extractor.ExtractStateDiff(*parentBlock, *currentBlock)
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if err == nil {
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t.Error("Expected an error, but it didn't occur.")
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}
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if !equals(err, mocks.Error) { t.Error() }
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publisher.SetPublisherError(nil)
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}
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func equals(actual, expected interface{}) (success bool) {
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if actualByteSlice, ok := actual.([]byte); ok {
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if expectedByteSlice, ok := expected.([]byte); ok {
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return bytes.Equal(actualByteSlice, expectedByteSlice)
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}
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}
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return reflect.DeepEqual(actual, expected)
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}
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