From 82104c93293097a41c32023d9b14e7bd06b46149 Mon Sep 17 00:00:00 2001
From: Liamsi <Liamsi@users.noreply.github.com>
Date: Tue, 12 Jun 2018 23:49:16 -0700
Subject: [PATCH] almost

---
 types/proto3/block.proto | 44 ++++++++++++++++++++++++++++++
 types/proto3_test.go     | 59 ++++++++++++++++++++++++++++++++++++++++
 2 files changed, 103 insertions(+)
 create mode 100644 types/proto3/block.proto
 create mode 100644 types/proto3_test.go

diff --git a/types/proto3/block.proto b/types/proto3/block.proto
new file mode 100644
index 000000000..d1c5cb928
--- /dev/null
+++ b/types/proto3/block.proto
@@ -0,0 +1,44 @@
+syntax = "proto3";
+
+package proto3;
+
+
+message PartSetHeader {
+  sint32 Total = 1;
+  bytes Hash = 2;
+}
+
+message BlockID {
+  bytes Hash = 1;
+  PartSetHeader PartsHeader = 2;
+}
+
+message Header {
+  // basic block info
+  string ChainID = 1;
+  sint64 Height = 2;
+  Timestamp Time = 3;
+  sint64 NumTxs = 4;
+
+  // prev block info
+  BlockID LastBlockID = 5;
+  sint64 TotalTxs = 6;
+
+  // hashes of block data
+  bytes LastCommitHash = 7; // commit from validators from the last block
+  bytes DataHash = 8; // transactions
+
+  // hashes from the app output from the prev block
+  bytes ValidatorsHash = 9; // validators for the current block
+  bytes ConsensusHash = 10; // consensus params for current block
+  bytes AppHash = 11; // state after txs from the previous block
+  bytes LastResultsHash = 12; // root hash of all results from the txs from the previous block
+
+  // consensus info
+  bytes EvidenceHash = 13; // evidence included in the block
+}
+
+message Timestamp {
+  sint64 seconds = 1;
+  sint32 nanos = 2;
+}
diff --git a/types/proto3_test.go b/types/proto3_test.go
new file mode 100644
index 000000000..244551fe2
--- /dev/null
+++ b/types/proto3_test.go
@@ -0,0 +1,59 @@
+package types
+
+import (
+	"testing"
+	"github.com/tendermint/tendermint/types/proto3"
+	"github.com/stretchr/testify/assert"
+	"github.com/golang/protobuf/proto"
+	"time"
+)
+
+func TestProto3Compatibility(t *testing.T) {
+	// TODO(ismail): table tests instead...
+	tm, err := time.Parse("Mon Jan 2 15:04:05 -0700 MST 2006", "Mon Jan 2 15:04:05 -0700 MST 2006")
+	assert.NoError(t, err)
+
+	pbHeader := proto3.Header{
+		ChainID: "cosmos",
+		Height:150,
+		Time: &proto3.Timestamp{Seconds:tm.Unix(), Nanos:int32(tm.Nanosecond())},
+		NumTxs: 7,
+		LastBlockID: &proto3.BlockID{
+			Hash: []byte("some serious hashing"),
+			PartsHeader:&proto3.PartSetHeader{
+				Total: 8,
+				Hash: []byte("some more serious hashing"),
+			},
+		},
+		TotalTxs: 100,
+		LastCommitHash: []byte("commit hash"),
+		DataHash: []byte("data hash"),
+		ValidatorsHash:[]byte("validators hash"),
+
+	}
+	// TODO(ismail): add another test where parts are missing (to see if default values are treated equiv.)
+	aminoHeader := Header{
+		ChainID: "cosmos",
+		Height:150,
+		Time: tm,
+		NumTxs: 7,
+		LastBlockID: BlockID{
+			Hash: []byte("some serious hashing"),
+			PartsHeader: PartSetHeader{
+				Total: 8,
+				Hash: []byte("some more serious hashing"),
+			},
+		},
+		TotalTxs: 100,
+		LastCommitHash: []byte("commit hash"),
+		DataHash: []byte("data hash"),
+		ValidatorsHash:[]byte("validators hash"),
+	}
+	ab, err := cdc.MarshalBinaryBare(aminoHeader)
+	assert.NoError(t, err, "unexpected error")
+
+	pb, err := proto.Marshal(&pbHeader)
+	assert.NoError(t, err, "unexpected error")
+	// This works:
+	assert.Equal(t, ab, pb, "encoding doesn't match")
+}