github.com/intfoundation/intchain@v0.0.0-20220727031208-4316ad31ca73/core/block_validator_test.go

// Copyright 2015 The go-ethereum Authors
// 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 core

// Tests that simple header verification works, for both good and bad blocks.
//func TestHeaderVerification(t *testing.T) {
//	// Create a simple chain to verify
//	var (
//		testdb, _ = rawdb.NewMemoryDatabase()
//		gspec     = &Genesis{Config: params.TestChainConfig}
//		genesis   = gspec.MustCommit(testdb)
//		blocks, _ = GenerateChain(params.TestChainConfig, genesis, ipbft.NewFaker(), testdb, 8, nil)
//	)
//	headers := make([]*types.Header, len(blocks))
//	for i, block := range blocks {
//		headers[i] = block.Header()
//	}
//	// Run the header checker for blocks one-by-one, checking for both valid and invalid nonces
//	chain, _ := NewBlockChain(testdb, nil, params.TestChainConfig, nil, vm.Config{}, nil)
//	defer chain.Stop()
//
//	for i := 0; i < len(blocks); i++ {
//		for j, valid := range []bool{true, false} {
//			var results <-chan error
//
//			if valid {
//				engine := nil
//				_, results = engine.VerifyHeaders(chain, []*types.Header{headers[i]}, []bool{true})
//			} else {
//				engine := ethash.NewFakeFailer(headers[i].Number.Uint64())
//				_, results = engine.VerifyHeaders(chain, []*types.Header{headers[i]}, []bool{true})
//			}
//			// Wait for the verification result
//			select {
//			case result := <-results:
//				if (result == nil) != valid {
//					t.Errorf("test %d.%d: validity mismatch: have %v, want %v", i, j, result, valid)
//				}
//			case <-time.After(time.Second):
//				t.Fatalf("test %d.%d: verification timeout", i, j)
//			}
//			// Make sure no more data is returned
//			select {
//			case result := <-results:
//				t.Fatalf("test %d.%d: unexpected result returned: %v", i, j, result)
//			case <-time.After(25 * time.Millisecond):
//			}
//		}
//		chain.InsertChain(blocks[i : i+1])
//	}
//}

// Tests that concurrent header verification works, for both good and bad blocks.
//func TestHeaderConcurrentVerification2(t *testing.T)  { testHeaderConcurrentVerification(t, 2) }
//func TestHeaderConcurrentVerification8(t *testing.T)  { testHeaderConcurrentVerification(t, 8) }
//func TestHeaderConcurrentVerification32(t *testing.T) { testHeaderConcurrentVerification(t, 32) }

//func testHeaderConcurrentVerification(t *testing.T, threads int) {
//	// Create a simple chain to verify
//	var (
//		testdb, _ = rawdb.NewMemoryDatabase()
//		gspec     = &Genesis{Config: params.TestChainConfig}
//		genesis   = gspec.MustCommit(testdb)
//		blocks, _ = GenerateChain(params.TestChainConfig, genesis, nil, testdb, 8, nil)
//	)
//	headers := make([]*types.Header, len(blocks))
//	seals := make([]bool, len(blocks))
//
//	for i, block := range blocks {
//		headers[i] = block.Header()
//		seals[i] = true
//	}
//	// Set the number of threads to verify on
//	old := runtime.GOMAXPROCS(threads)
//	defer runtime.GOMAXPROCS(old)
//
//	// Run the header checker for the entire block chain at once both for a valid and
//	// also an invalid chain (enough if one arbitrary block is invalid).
//	for i, valid := range []bool{true, false} {
//		var results <-chan error
//
//		if valid {
//			chain, _ := NewBlockChain(testdb, nil, params.TestChainConfig, nil, vm.Config{}, nil)
//			_, results = chain.engine.VerifyHeaders(chain, headers, seals)
//			chain.Stop()
//		} else {
//			chain, _ := NewBlockChain(testdb, nil, params.TestChainConfig, ethash.NewFakeFailer(uint64(len(headers)-1)), vm.Config{}, nil)
//			_, results = chain.engine.VerifyHeaders(chain, headers, seals)
//			chain.Stop()
//		}
//		// Wait for all the verification results
//		checks := make(map[int]error)
//		for j := 0; j < len(blocks); j++ {
//			select {
//			case result := <-results:
//				checks[j] = result
//
//			case <-time.After(time.Second):
//				t.Fatalf("test %d.%d: verification timeout", i, j)
//			}
//		}
//		// Check nonce check validity
//		for j := 0; j < len(blocks); j++ {
//			want := valid || (j < len(blocks)-2) // We chose the last-but-one nonce in the chain to fail
//			if (checks[j] == nil) != want {
//				t.Errorf("test %d.%d: validity mismatch: have %v, want %v", i, j, checks[j], want)
//			}
//			if !want {
//				// A few blocks after the first error may pass verification due to concurrent
//				// workers. We don't care about those in this test, just that the correct block
//				// errors out.
//				break
//			}
//		}
//		// Make sure no more data is returned
//		select {
//		case result := <-results:
//			t.Fatalf("test %d: unexpected result returned: %v", i, result)
//		case <-time.After(25 * time.Millisecond):
//		}
//	}
//}

// Tests that aborting a header validation indeed prevents further checks from being
// run, as well as checks that no left-over goroutines are leaked.
//func TestHeaderConcurrentAbortion2(t *testing.T)  { testHeaderConcurrentAbortion(t, 2) }
//func TestHeaderConcurrentAbortion8(t *testing.T)  { testHeaderConcurrentAbortion(t, 8) }
//func TestHeaderConcurrentAbortion32(t *testing.T) { testHeaderConcurrentAbortion(t, 32) }

//func testHeaderConcurrentAbortion(t *testing.T, threads int) {
//	// Create a simple chain to verify
//	var (
//		testdb, _ = rawdb.NewMemoryDatabase()
//		gspec     = &Genesis{Config: params.TestChainConfig}
//		genesis   = gspec.MustCommit(testdb)
//		blocks, _ = GenerateChain(params.TestChainConfig, genesis, nil, testdb, 1024, nil)
//	)
//	headers := make([]*types.Header, len(blocks))
//	seals := make([]bool, len(blocks))
//
//	for i, block := range blocks {
//		headers[i] = block.Header()
//		seals[i] = true
//	}
//	// Set the number of threads to verify on
//	old := runtime.GOMAXPROCS(threads)
//	defer runtime.GOMAXPROCS(old)
//
//	// Start the verifications and immediately abort
//	chain, _ := NewBlockChain(testdb, nil, params.TestChainConfig, ethash.NewFakeDelayer(time.Millisecond), vm.Config{}, nil)
//	defer chain.Stop()
//
//	abort, results := chain.engine.VerifyHeaders(chain, headers, seals)
//	close(abort)
//
//	// Deplete the results channel
//	verified := 0
//	for depleted := false; !depleted; {
//		select {
//		case result := <-results:
//			if result != nil {
//				t.Errorf("header %d: validation failed: %v", verified, result)
//			}
//			verified++
//		case <-time.After(50 * time.Millisecond):
//			depleted = true
//		}
//	}
//	// Check that abortion was honored by not processing too many POWs
//	if verified > 2*threads {
//		t.Errorf("verification count too large: have %d, want below %d", verified, 2*threads)
//	}
//}