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Diffstat (limited to 'Godeps/_workspace/src/github.com/ethereum/ethash/ethash_test.go')
| -rw-r--r-- | Godeps/_workspace/src/github.com/ethereum/ethash/ethash_test.go | 221 |
1 files changed, 0 insertions, 221 deletions
diff --git a/Godeps/_workspace/src/github.com/ethereum/ethash/ethash_test.go b/Godeps/_workspace/src/github.com/ethereum/ethash/ethash_test.go deleted file mode 100644 index e0ca0bd85..000000000 --- a/Godeps/_workspace/src/github.com/ethereum/ethash/ethash_test.go +++ /dev/null @@ -1,221 +0,0 @@ -// Copyright 2015 The go-ethereum Authors -// Copyright 2015 Lefteris Karapetsas <lefteris@refu.co> -// This file is part of the go-ethereum library. -// -// The go-ethereum library is free software: you can redistribute it and/or modify -// it under the terms of the GNU Lesser General Public License as published by -// the Free Software Foundation, either version 3 of the License, or -// (at your option) any later version. -// -// The go-ethereum library is distributed in the hope that it will be useful, -// but WITHOUT ANY WARRANTY; without even the implied warranty of -// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the -// GNU Lesser General Public License for more details. -// -// You should have received a copy of the GNU Lesser General Public License -// along with the go-ethereum library. If not, see <http://www.gnu.org/licenses/>. - -package ethash - -import ( - "bytes" - "crypto/rand" - "encoding/hex" - "log" - "math/big" - "os" - "sync" - "testing" - - "github.com/ethereum/go-ethereum/common" - "github.com/ethereum/go-ethereum/crypto" -) - -func init() { - // glog.SetV(6) - // glog.SetToStderr(true) -} - -type testBlock struct { - difficulty *big.Int - hashNoNonce common.Hash - nonce uint64 - mixDigest common.Hash - number uint64 -} - -func (b *testBlock) Difficulty() *big.Int { return b.difficulty } -func (b *testBlock) HashNoNonce() common.Hash { return b.hashNoNonce } -func (b *testBlock) Nonce() uint64 { return b.nonce } -func (b *testBlock) MixDigest() common.Hash { return b.mixDigest } -func (b *testBlock) NumberU64() uint64 { return b.number } - -var validBlocks = []*testBlock{ - // from proof of concept nine testnet, epoch 0 - { - number: 22, - hashNoNonce: common.HexToHash("372eca2454ead349c3df0ab5d00b0b706b23e49d469387db91811cee0358fc6d"), - difficulty: big.NewInt(132416), - nonce: 0x495732e0ed7a801c, - mixDigest: common.HexToHash("2f74cdeb198af0b9abe65d22d372e22fb2d474371774a9583c1cc427a07939f5"), - }, - // from proof of concept nine testnet, epoch 1 - { - number: 30001, - hashNoNonce: common.HexToHash("7e44356ee3441623bc72a683fd3708fdf75e971bbe294f33e539eedad4b92b34"), - difficulty: big.NewInt(1532671), - nonce: 0x318df1c8adef7e5e, - mixDigest: common.HexToHash("144b180aad09ae3c81fb07be92c8e6351b5646dda80e6844ae1b697e55ddde84"), - }, - // from proof of concept nine testnet, epoch 2 - { - number: 60000, - hashNoNonce: common.HexToHash("5fc898f16035bf5ac9c6d9077ae1e3d5fc1ecc3c9fd5bee8bb00e810fdacbaa0"), - difficulty: big.NewInt(2467358), - nonce: 0x50377003e5d830ca, - mixDigest: common.HexToHash("ab546a5b73c452ae86dadd36f0ed83a6745226717d3798832d1b20b489e82063"), - }, -} - -var invalidZeroDiffBlock = testBlock{ - number: 61440000, - hashNoNonce: crypto.Sha3Hash([]byte("foo")), - difficulty: big.NewInt(0), - nonce: 0xcafebabec00000fe, - mixDigest: crypto.Sha3Hash([]byte("bar")), -} - -func TestEthashVerifyValid(t *testing.T) { - eth := New() - for i, block := range validBlocks { - if !eth.Verify(block) { - t.Errorf("block %d (%x) did not validate.", i, block.hashNoNonce[:6]) - } - } -} - -func TestEthashVerifyInvalid(t *testing.T) { - eth := New() - if eth.Verify(&invalidZeroDiffBlock) { - t.Errorf("should not validate - we just ensure it does not panic on this block") - } -} - -func TestEthashConcurrentVerify(t *testing.T) { - eth, err := NewForTesting() - if err != nil { - t.Fatal(err) - } - defer os.RemoveAll(eth.Full.Dir) - - block := &testBlock{difficulty: big.NewInt(10)} - nonce, md := eth.Search(block, nil, 0) - block.nonce = nonce - block.mixDigest = common.BytesToHash(md) - - // Verify the block concurrently to check for data races. - var wg sync.WaitGroup - wg.Add(100) - for i := 0; i < 100; i++ { - go func() { - if !eth.Verify(block) { - t.Error("Block could not be verified") - } - wg.Done() - }() - } - wg.Wait() -} - -func TestEthashConcurrentSearch(t *testing.T) { - eth, err := NewForTesting() - if err != nil { - t.Fatal(err) - } - eth.Turbo(true) - defer os.RemoveAll(eth.Full.Dir) - - type searchRes struct { - n uint64 - md []byte - } - - var ( - block = &testBlock{difficulty: big.NewInt(35000)} - nsearch = 10 - wg = new(sync.WaitGroup) - found = make(chan searchRes) - stop = make(chan struct{}) - ) - rand.Read(block.hashNoNonce[:]) - wg.Add(nsearch) - // launch n searches concurrently. - for i := 0; i < nsearch; i++ { - go func() { - nonce, md := eth.Search(block, stop, 0) - select { - case found <- searchRes{n: nonce, md: md}: - case <-stop: - } - wg.Done() - }() - } - - // wait for one of them to find the nonce - res := <-found - // stop the others - close(stop) - wg.Wait() - - block.nonce = res.n - block.mixDigest = common.BytesToHash(res.md) - if !eth.Verify(block) { - t.Error("Block could not be verified") - } -} - -func TestEthashSearchAcrossEpoch(t *testing.T) { - eth, err := NewForTesting() - if err != nil { - t.Fatal(err) - } - defer os.RemoveAll(eth.Full.Dir) - - for i := epochLength - 40; i < epochLength+40; i++ { - block := &testBlock{number: i, difficulty: big.NewInt(90)} - rand.Read(block.hashNoNonce[:]) - nonce, md := eth.Search(block, nil, 0) - block.nonce = nonce - block.mixDigest = common.BytesToHash(md) - if !eth.Verify(block) { - t.Fatalf("Block could not be verified") - } - } -} - -func TestGetSeedHash(t *testing.T) { - seed0, err := GetSeedHash(0) - if err != nil { - t.Errorf("Failed to get seedHash for block 0: %v", err) - } - if bytes.Compare(seed0, make([]byte, 32)) != 0 { - log.Printf("seedHash for block 0 should be 0s, was: %v\n", seed0) - } - seed1, err := GetSeedHash(30000) - if err != nil { - t.Error(err) - } - - // From python: - // > from pyethash import get_seedhash - // > get_seedhash(30000) - expectedSeed1, err := hex.DecodeString("290decd9548b62a8d60345a988386fc84ba6bc95484008f6362f93160ef3e563") - if err != nil { - t.Error(err) - } - - if bytes.Compare(seed1, expectedSeed1) != 0 { - log.Printf("seedHash for block 1 should be: %v,\nactual value: %v\n", expectedSeed1, seed1) - } - -} |