/
test_helper.go
160 lines (141 loc) · 5.96 KB
/
test_helper.go
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/*
Copyright IBM Corp. All Rights Reserved.
SPDX-License-Identifier: Apache-2.0
*/
package testutil
import (
"testing"
"github.com/golang/protobuf/proto"
"github.com/hyperledger/fabric/common/configtx/test"
"github.com/hyperledger/fabric/common/util"
lutils "github.com/hyperledger/fabric/core/ledger/util"
"github.com/hyperledger/fabric/protos/common"
pb "github.com/hyperledger/fabric/protos/peer"
ptestutils "github.com/hyperledger/fabric/protos/testutils"
"github.com/hyperledger/fabric/protos/utils"
)
//BlockGenerator generates a series of blocks for testing
type BlockGenerator struct {
blockNum uint64
previousHash []byte
signTxs bool
t *testing.T
}
// NewBlockGenerator instantiates new BlockGenerator for testing
func NewBlockGenerator(t *testing.T, ledgerID string, signTxs bool) (*BlockGenerator, *common.Block) {
gb, err := test.MakeGenesisBlock(ledgerID)
AssertNoError(t, err, "")
gb.Metadata.Metadata[common.BlockMetadataIndex_TRANSACTIONS_FILTER] = lutils.NewTxValidationFlagsSetValue(len(gb.Data.Data), pb.TxValidationCode_VALID)
return &BlockGenerator{1, gb.GetHeader().Hash(), signTxs, t}, gb
}
// NextBlock constructs next block in sequence that includes a number of transactions - one per simulationResults
func (bg *BlockGenerator) NextBlock(simulationResults [][]byte) *common.Block {
block := ConstructBlock(bg.t, bg.blockNum, bg.previousHash, simulationResults, bg.signTxs)
bg.blockNum++
bg.previousHash = block.Header.Hash()
return block
}
// NextBlock constructs next block in sequence that includes a number of transactions - one per simulationResults
func (bg *BlockGenerator) NextBlockWithTxid(simulationResults [][]byte, txids []string) *common.Block {
// Length of simulationResults should be same as the length of txids.
if len(simulationResults) != len(txids) {
return nil
}
block := ConstructBlockWithTxid(bg.t, bg.blockNum, bg.previousHash, simulationResults, txids, bg.signTxs)
bg.blockNum++
bg.previousHash = block.Header.Hash()
return block
}
// NextTestBlock constructs next block in sequence block with 'numTx' number of transactions for testing
func (bg *BlockGenerator) NextTestBlock(numTx int, txSize int) *common.Block {
simulationResults := [][]byte{}
for i := 0; i < numTx; i++ {
simulationResults = append(simulationResults, ConstructRandomBytes(bg.t, txSize))
}
return bg.NextBlock(simulationResults)
}
// NextTestBlocks constructs 'numBlocks' number of blocks for testing
func (bg *BlockGenerator) NextTestBlocks(numBlocks int) []*common.Block {
blocks := []*common.Block{}
for i := 0; i < numBlocks; i++ {
blocks = append(blocks, bg.NextTestBlock(10, 100))
}
return blocks
}
// ConstructTransaction constructs a transaction for testing
func ConstructTransaction(_ *testing.T, simulationResults []byte, txid string, sign bool) (*common.Envelope, string, error) {
ccid := &pb.ChaincodeID{
Name: "foo",
Version: "v1",
}
//response := &pb.Response{Status: 200}
var txID string
var txEnv *common.Envelope
var err error
if sign {
txEnv, txID, err = ptestutils.ConstructSingedTxEnvWithDefaultSigner(util.GetTestChainID(), ccid, nil, simulationResults, txid, nil, nil)
} else {
txEnv, txID, err = ptestutils.ConstructUnsignedTxEnv(util.GetTestChainID(), ccid, nil, simulationResults, txid, nil, nil)
}
return txEnv, txID, err
}
func ConstructBlockWithTxid(t *testing.T, blockNum uint64, previousHash []byte, simulationResults [][]byte, txids []string, sign bool) *common.Block {
envs := []*common.Envelope{}
for i := 0; i < len(simulationResults); i++ {
env, _, err := ConstructTransaction(t, simulationResults[i], txids[i], sign)
if err != nil {
t.Fatalf("ConstructTestTransaction failed, err %s", err)
}
envs = append(envs, env)
}
return NewBlock(envs, blockNum, previousHash)
}
// ConstructBlock constructs a single block
func ConstructBlock(t *testing.T, blockNum uint64, previousHash []byte, simulationResults [][]byte, sign bool) *common.Block {
envs := []*common.Envelope{}
for i := 0; i < len(simulationResults); i++ {
env, _, err := ConstructTransaction(t, simulationResults[i], "", sign)
if err != nil {
t.Fatalf("ConstructTestTransaction failed, err %s", err)
}
envs = append(envs, env)
}
return NewBlock(envs, blockNum, previousHash)
}
//ConstructTestBlock constructs a single block with random contents
func ConstructTestBlock(t *testing.T, blockNum uint64, numTx int, txSize int) *common.Block {
simulationResults := [][]byte{}
for i := 0; i < numTx; i++ {
simulationResults = append(simulationResults, ConstructRandomBytes(t, txSize))
}
return ConstructBlock(t, blockNum, ConstructRandomBytes(t, 32), simulationResults, false)
}
// ConstructTestBlocks returns a series of blocks starting with blockNum=0.
// The first block in the returned array is a config tx block that represents a genesis block
func ConstructTestBlocks(t *testing.T, numBlocks int) []*common.Block {
bg, gb := NewBlockGenerator(t, util.GetTestChainID(), false)
blocks := []*common.Block{}
if numBlocks != 0 {
blocks = append(blocks, gb)
}
return append(blocks, bg.NextTestBlocks(numBlocks-1)...)
}
// ConstructBytesProposalResponsePayload constructs a ProposalResponse byte with given chaincode version and simulationResults for testing
func ConstructBytesProposalResponsePayload(version string, simulationResults []byte) ([]byte, error) {
ccid := &pb.ChaincodeID{
Name: "foo",
Version: version,
}
return ptestutils.ConstructBytesProposalResponsePayload(util.GetTestChainID(), ccid, nil, simulationResults)
}
func NewBlock(env []*common.Envelope, blockNum uint64, previousHash []byte) *common.Block {
block := common.NewBlock(blockNum, previousHash)
for i := 0; i < len(env); i++ {
txEnvBytes, _ := proto.Marshal(env[i])
block.Data.Data = append(block.Data.Data, txEnvBytes)
}
block.Header.DataHash = block.Data.Hash()
utils.InitBlockMetadata(block)
block.Metadata.Metadata[common.BlockMetadataIndex_TRANSACTIONS_FILTER] = lutils.NewTxValidationFlagsSetValue(len(env), pb.TxValidationCode_VALID)
return block
}