From 5220a61fc5429937dc6ba30facf9bf6aabfc7aca Mon Sep 17 00:00:00 2001
From: Aayush Rajasekaran <arajasek94@gmail.com>
Date: Fri, 17 Apr 2020 19:43:37 -0400
Subject: [PATCH] Add an interop test for block header serialisation

---
 chain/types/blockheader_test.go | 58 +++++++++++++++++++++++++++++++++
 1 file changed, 58 insertions(+)

diff --git a/chain/types/blockheader_test.go b/chain/types/blockheader_test.go
index 18b44a742..e18e4028a 100644
--- a/chain/types/blockheader_test.go
+++ b/chain/types/blockheader_test.go
@@ -2,7 +2,9 @@ package types
 
 import (
 	"bytes"
+	"encoding/hex"
 	"fmt"
+	"github.com/filecoin-project/specs-actors/actors/abi"
 	"reflect"
 	"testing"
 
@@ -63,6 +65,62 @@ func TestBlockHeaderSerialization(t *testing.T) {
 	}
 }
 
+func TestInteropBH(t *testing.T) {
+	newAddr, err := address.NewSecp256k1Address([]byte("address0"))
+
+	if err != nil {
+		t.Fatal(err)
+	}
+
+	mcid, err := cid.Parse("bafy2bzaceaxyj7xq27gc2747adjcirpxx52tt7owqx6z6kckun7tqivvoym4y")
+	if err != nil {
+		t.Fatal(err)
+	}
+
+	posts := []abi.PoStProof{
+		{abi.RegisteredProof_StackedDRG2KiBWinningPoSt, []byte{0x07}},
+	}
+
+	bh := &BlockHeader{
+		Miner:         newAddr,
+		Ticket:        &Ticket{[]byte{0x01, 0x02, 0x03}},
+		ElectionProof: &ElectionProof{[]byte{0x0a, 0x0b}},
+		BeaconEntries: []BeaconEntry{
+			{
+				Round: 5,
+				Data:  []byte{0x0c},
+				//prevRound: 0,
+			},
+		},
+		Height:                2,
+		Messages:              mcid,
+		ParentMessageReceipts: mcid,
+		Parents:               []cid.Cid{mcid},
+		ParentWeight:          NewInt(1000),
+		ForkSignaling:         3,
+		ParentStateRoot:       mcid,
+		Timestamp:             1,
+		WinPoStProof:          posts,
+		BlockSig: &crypto.Signature{
+			Type: crypto.SigTypeBLS,
+			Data: []byte{0x3},
+		},
+		BLSAggregate: &crypto.Signature{},
+	}
+
+	bhsb, err := bh.SigningBytes()
+
+	if err != nil {
+		t.Fatal(err)
+	}
+
+	// acquired from go-filecoin
+	gfc := "8f5501d04cb15021bf6bd003073d79e2238d4e61f1ad22814301020381420a0b818205410c818209410781d82a5827000171a0e402202f84fef0d7cc2d7f9f00d22445f7bf7539fdd685fd9f284aa37f3822b57619cc430003e802d82a5827000171a0e402202f84fef0d7cc2d7f9f00d22445f7bf7539fdd685fd9f284aa37f3822b57619ccd82a5827000171a0e402202f84fef0d7cc2d7f9f00d22445f7bf7539fdd685fd9f284aa37f3822b57619ccd82a5827000171a0e402202f84fef0d7cc2d7f9f00d22445f7bf7539fdd685fd9f284aa37f3822b57619cc410001f603"
+	if gfc != hex.EncodeToString(bhsb) {
+		t.Fatal("not equal!")
+	}
+}
+
 func BenchmarkBlockHeaderMarshal(b *testing.B) {
 	bh := testBlockHeader(b)