cmd/geth, tests: enable running multiple tests from a single file

This commit also changes the block test loading so tests containing
invalid RLP blocks can be loaded and return an error only when they are
run.

(cherry picked from commit 898ba87984)

cmd/geth/blocktest.go

@@ -2,6 +2,7 @@ package main
 
 import (
 	"fmt"
+	"os"
 
 	"github.com/codegangsta/cli"
 	"github.com/ethereum/go-ethereum/cmd/utils"
@@ -12,7 +13,7 @@ import (
 )
 
 var blocktestCmd = cli.Command{
-	Action: runblocktest,
+	Action: runBlockTest,
 	Name:   "blocktest",
 	Usage:  `loads a block test file`,
 	Description: `
@@ -25,27 +26,78 @@ be able to interact with the chain defined by the test.
 `,
 }
 
-func runblocktest(ctx *cli.Context) {
-	if len(ctx.Args()) != 3 {
-		utils.Fatalf("Usage: ethereum blocktest <path-to-test-file> <test-name> {rpc, norpc}")
+func runBlockTest(ctx *cli.Context) {
+	var (
+		file, testname string
+		rpc            bool
+	)
+	args := ctx.Args()
+	switch {
+	case len(args) == 1:
+		file = args[0]
+	case len(args) == 2:
+		file, testname = args[0], args[1]
+	case len(args) == 3:
+		file, testname = args[0], args[1]
+		rpc = true
+	default:
+		utils.Fatalf(`Usage: ethereum blocktest <path-to-test-file> [ <test-name> [ "rpc" ] ]`)
 	}
-	file, testname, startrpc := ctx.Args()[0], ctx.Args()[1], ctx.Args()[2]
-
 	bt, err := tests.LoadBlockTests(file)
 	if err != nil {
 		utils.Fatalf("%v", err)
 	}
+
+	// run all tests if no test name is specified
+	if testname == "" {
+		ecode := 0
+		for name, test := range bt {
+			fmt.Printf("----------------- Running Block Test %q\n", name)
+			ethereum, err := runOneBlockTest(ctx, test)
+			if err != nil {
+				fmt.Println(err)
+				fmt.Println("FAIL")
+				ecode = 1
+			}
+			if ethereum != nil {
+				ethereum.Stop()
+				ethereum.WaitForShutdown()
+			}
+		}
+		os.Exit(ecode)
+		return
+	}
+	// otherwise, run the given test
 	test, ok := bt[testname]
 	if !ok {
 		utils.Fatalf("Test file does not contain test named %q", testname)
 	}
+	ethereum, err := runOneBlockTest(ctx, test)
+	if err != nil {
+		utils.Fatalf("%v", err)
+	}
+	defer ethereum.Stop()
+	if rpc {
+		fmt.Println("Block Test post state validated, starting RPC interface.")
+		startEth(ctx, ethereum)
+		utils.StartRPC(ethereum, ctx)
+		ethereum.WaitForShutdown()
+	}
+}
 
+func runOneBlockTest(ctx *cli.Context, test *tests.BlockTest) (*eth.Ethereum, error) {
 	cfg := utils.MakeEthConfig(ClientIdentifier, Version, ctx)
 	cfg.NewDB = func(path string) (common.Database, error) { return ethdb.NewMemDatabase() }
 	cfg.MaxPeers = 0 // disable network
+	cfg.Shh = false  // disable whisper
+	cfg.NAT = nil    // disable port mapping
+
 	ethereum, err := eth.New(cfg)
 	if err != nil {
-		utils.Fatalf("%v", err)
+		return nil, err
+	}
+	if err := ethereum.Start(); err != nil {
+		return nil, err
 	}
 
 	// import the genesis block
@@ -54,27 +106,16 @@ func runblocktest(ctx *cli.Context) {
 	// import pre accounts
 	statedb, err := test.InsertPreState(ethereum.StateDb())
 	if err != nil {
-		utils.Fatalf("could not insert genesis accounts: %v", err)
+		return ethereum, fmt.Errorf("InsertPreState: %v", err)
 	}
 
 	// insert the test blocks, which will execute all transactions
-	chain := ethereum.ChainManager()
-	if err := chain.InsertChain(test.Blocks); err != nil {
-		utils.Fatalf("Block Test load error: %v %T", err, err)
-	} else {
-		fmt.Println("Block Test chain loaded")
+	if err := test.InsertBlocks(ethereum.ChainManager()); err != nil {
+		return ethereum, fmt.Errorf("Block Test load error: %v %T", err, err)
 	}
-
+	fmt.Println("chain loaded")
 	if err := test.ValidatePostState(statedb); err != nil {
-		utils.Fatalf("post state validation failed: %v", err)
-	}
-	fmt.Println("Block Test post state validated, starting ethereum.")
-
-	if startrpc == "rpc" {
-		startEth(ctx, ethereum)
-		utils.StartRPC(ethereum, ctx)
-		ethereum.WaitForShutdown()
-	} else {
-		startEth(ctx, ethereum)
+		return ethereum, fmt.Errorf("post state validation failed: %v", err)
 	}
+	return ethereum, nil
 }