core, consensus: pluggable consensus engines (#3817)

This commit adds pluggable consensus engines to go-ethereum. In short, it
introduces a generic consensus interface, and refactors the entire codebase to
use this interface.

1 files changed, 4 insertions, 7 deletions

diff --git a/light/odr_test.go b/light/odr_test.go
index 37d999994..ca33db246 100644
--- a/light/odr_test.go
+++ b/light/odr_test.go
@@ -26,6 +26,7 @@ import (
 
 	"github.com/ethereum/go-ethereum/common"
 	"github.com/ethereum/go-ethereum/common/math"
+	"github.com/ethereum/go-ethereum/consensus/ethash"
 	"github.com/ethereum/go-ethereum/core"
 	"github.com/ethereum/go-ethereum/core/state"
 	"github.com/ethereum/go-ethereum/core/types"
@@ -34,7 +35,6 @@ import (
 	"github.com/ethereum/go-ethereum/ethdb"
 	"github.com/ethereum/go-ethereum/event"
 	"github.com/ethereum/go-ethereum/params"
-	"github.com/ethereum/go-ethereum/pow"
 	"github.com/ethereum/go-ethereum/rlp"
 	"github.com/ethereum/go-ethereum/trie"
 )
@@ -248,7 +248,6 @@ func testChainGen(i int, block *core.BlockGen) {
 func testChainOdr(t *testing.T, protocol int, expFail uint64, fn odrTestFn) {
 	var (
 		evmux   = new(event.TypeMux)
-		pow     = new(pow.FakePow)
 		sdb, _  = ethdb.NewMemDatabase()
 		ldb, _  = ethdb.NewMemDatabase()
 		gspec   = core.Genesis{Alloc: core.GenesisAlloc{testBankAddress: {Balance: testBankFunds}}}
@@ -256,16 +255,14 @@ func testChainOdr(t *testing.T, protocol int, expFail uint64, fn odrTestFn) {
 	)
 	gspec.MustCommit(ldb)
 	// Assemble the test environment
-	blockchain, _ := core.NewBlockChain(sdb, testChainConfig(), pow, evmux, vm.Config{})
-	chainConfig := &params.ChainConfig{HomesteadBlock: new(big.Int)}
-	gchain, _ := core.GenerateChain(chainConfig, genesis, sdb, 4, testChainGen)
+	blockchain, _ := core.NewBlockChain(sdb, params.TestChainConfig, ethash.NewFullFaker(), evmux, vm.Config{})
+	gchain, _ := core.GenerateChain(params.TestChainConfig, genesis, sdb, 4, testChainGen)
 	if _, err := blockchain.InsertChain(gchain); err != nil {
 		panic(err)
 	}
 
 	odr := &testOdr{sdb: sdb, ldb: ldb}
-	lightchain, _ := NewLightChain(odr, testChainConfig(), pow, evmux)
-	lightchain.SetValidator(bproc{})
+	lightchain, _ := NewLightChain(odr, params.TestChainConfig, ethash.NewFullFaker(), evmux)
 	headers := make([]*types.Header, len(gchain))
 	for i, block := range gchain {
 		headers[i] = block.Header()