117 lines
3.3 KiB
Go
117 lines
3.3 KiB
Go
package service_test
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import (
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"testing"
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"github.com/ethereum/go-ethereum/core/types"
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"github.com/ethereum/go-ethereum/core"
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service2 "github.com/ethereum/go-ethereum/statediff/service"
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"reflect"
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"github.com/ethereum/go-ethereum/common"
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"github.com/ethereum/go-ethereum/event"
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"math/big"
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"math/rand"
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)
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type MockExtractor struct {
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ParentBlocks []types.Block
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CurrentBlocks []types.Block
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extractError error
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}
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func (me *MockExtractor) ExtractStateDiff(parent, current types.Block) (string, error) {
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me.ParentBlocks = append(me.ParentBlocks, parent)
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me.CurrentBlocks = append(me.CurrentBlocks, current)
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return "", me.extractError
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}
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func (me *MockExtractor) SetExtractError(err error) {
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me.extractError = err
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}
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type MockChain struct {
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ParentHashesLookedUp []common.Hash
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parentBlocksToReturn []*types.Block
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callCount int
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}
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func (mc *MockChain) SetParentBlockToReturn(blocks []*types.Block) {
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mc.parentBlocksToReturn = blocks
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}
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func (mc *MockChain) GetBlockByHash(hash common.Hash) *types.Block {
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mc.ParentHashesLookedUp = append(mc.ParentHashesLookedUp, hash)
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var parentBlock types.Block
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if len(mc.parentBlocksToReturn) > 0 {
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parentBlock = *mc.parentBlocksToReturn[mc.callCount]
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}
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mc.callCount++
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return &parentBlock
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}
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func (MockChain) SubscribeChainEvent(ch chan<- core.ChainEvent) event.Subscription {
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panic("implement me")
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}
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func TestServiceLoop(t *testing.T) {
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testServiceLoop(t)
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}
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var (
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eventsChannel = make(chan core.ChainEvent, 10)
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parentHeader1 = types.Header{Number: big.NewInt(rand.Int63())}
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parentHeader2 = types.Header{Number: big.NewInt(rand.Int63())}
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parentBlock1 = types.NewBlock(&parentHeader1, nil, nil, nil)
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parentBlock2 = types.NewBlock(&parentHeader2, nil, nil, nil)
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parentHash1 = parentBlock1.Hash()
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parentHash2 = parentBlock2.Hash()
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header1 = types.Header{ ParentHash: parentHash1 }
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header2 = types.Header{ ParentHash: parentHash2 }
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block1 = types.NewBlock(&header1, nil, nil, nil)
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block2 = types.NewBlock(&header2, nil, nil, nil)
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event1 = core.ChainEvent{ Block: block1 }
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event2 = core.ChainEvent{ Block: block2 }
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)
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func testServiceLoop(t *testing.T) {
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eventsChannel <- event1
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eventsChannel <- event2
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extractor := MockExtractor{}
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close(eventsChannel)
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blockChain := MockChain{}
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service := service2.StateDiffService{
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Builder: nil,
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Extractor: &extractor,
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BlockChain: &blockChain,
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}
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blockChain.SetParentBlockToReturn([]*types.Block{parentBlock1, parentBlock2})
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service.Loop(eventsChannel)
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//parent and current blocks are passed to the extractor
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expectedCurrentBlocks := []types.Block{*block1, *block2}
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if !reflect.DeepEqual(extractor.CurrentBlocks, expectedCurrentBlocks) {
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t.Errorf("Actual does not equal expected.\nactual:%+v\nexpected: %+v", extractor.CurrentBlocks, expectedCurrentBlocks)
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}
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expectedParentBlocks := []types.Block{*parentBlock1, *parentBlock2}
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if !reflect.DeepEqual(extractor.ParentBlocks, expectedParentBlocks) {
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t.Errorf("Actual does not equal expected.\nactual:%+v\nexpected: %+v", extractor.CurrentBlocks, expectedParentBlocks)
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}
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//look up the parent block from its hash
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expectedHashes := []common.Hash{block1.ParentHash(), block2.ParentHash()}
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if !reflect.DeepEqual(blockChain.ParentHashesLookedUp, expectedHashes) {
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t.Errorf("Actual does not equal expected.\nactual:%+v\nexpected: %+v", blockChain.ParentHashesLookedUp, expectedHashes)
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}
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}
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