rpc: /block_results fix docs + write test + restructure response (#3615)

BREAKING

Example response:

```json
{
  "jsonrpc": "2.0",
  "id": "",
  "result": {
    "height": "2109",
    "txs_results": null,
    "begin_block_events": null,
    "end_block_events": null,
    "validator_updates": null,
    "consensus_param_updates": null
  }
}
```

Old result consisted of ABCIResponses struct and height. Exposing
internal ABCI structures (which we store in state package) in RPC seems
bad to me for the following reasons:

1) high risk of breaking the API when somebody changes internal structs
(HAPPENED HERE!)
2) RPC is aware of ABCI, which I'm not sure we want

CHANGELOG_PENDING.md

@@ -11,6 +11,21 @@ program](https://hackerone.com/tendermint).
 ### BREAKING CHANGES:
 
 - CLI/RPC/Config
+  - [rpc] `/block_results` response format updated (see RPC docs for details)
+    ```
+    {
+      "jsonrpc": "2.0",
+      "id": "",
+      "result": {
+        "height": "2109",
+        "txs_results": null,
+        "begin_block_events": null,
+        "end_block_events": null,
+        "validator_updates": null,
+        "consensus_param_updates": null
+      }
+    }
+    ```
 
 - Apps
 
@@ -27,7 +42,7 @@ program](https://hackerone.com/tendermint).
 - [libs/pubsub] [\#4070](https://github.com/tendermint/tendermint/pull/4070) No longer panic in `Query#(Matches|Conditions)` preferring to return an error instead.
 - [libs/pubsub] [\#4070](https://github.com/tendermint/tendermint/pull/4070) Strip out non-numeric characters when attempting to match numeric values.
 - [p2p] [\#3991](https://github.com/tendermint/tendermint/issues/3991) Log "has been established or dialed" as debug log instead of Error for connected peers (@whunmr)
-- [rpc] [\#4077](https://github.com/tendermint/tendermint/pull/4077) Added support for `EXISTS` clause to the Websocket query interface. 
+- [rpc] [\#4077](https://github.com/tendermint/tendermint/pull/4077) Added support for `EXISTS` clause to the Websocket query interface.
 - [privval] Add `SignerDialerEndpointRetryWaitInterval` option (@cosmostuba)
 - [crypto] Add `RegisterKeyType` to amino to allow external key types registration (@austinabell)
 

consensus/replay.go

@@ -530,7 +530,7 @@ type mockProxyApp struct {
 }
 
 func (mock *mockProxyApp) DeliverTx(req abci.RequestDeliverTx) abci.ResponseDeliverTx {
-	r := mock.abciResponses.DeliverTx[mock.txCount]
+	r := mock.abciResponses.DeliverTxs[mock.txCount]
 	mock.txCount++
 	if r == nil { //it could be nil because of amino unMarshall, it will cause an empty ResponseDeliverTx to become nil
 		return abci.ResponseDeliverTx{}

consensus/replay_test.go

@@ -548,8 +548,8 @@ func TestMockProxyApp(t *testing.T) {
 
 	assert.NotPanics(t, func() {
 		abciResWithEmptyDeliverTx := new(sm.ABCIResponses)
-		abciResWithEmptyDeliverTx.DeliverTx = make([]*abci.ResponseDeliverTx, 0)
+		abciResWithEmptyDeliverTx.DeliverTxs = make([]*abci.ResponseDeliverTx, 0)
-		abciResWithEmptyDeliverTx.DeliverTx = append(abciResWithEmptyDeliverTx.DeliverTx, &abci.ResponseDeliverTx{})
+		abciResWithEmptyDeliverTx.DeliverTxs = append(abciResWithEmptyDeliverTx.DeliverTxs, &abci.ResponseDeliverTx{})
 
 		// called when saveABCIResponses:
 		bytes := cdc.MustMarshalBinaryBare(abciResWithEmptyDeliverTx)
@@ -562,7 +562,7 @@ func TestMockProxyApp(t *testing.T) {
 		mock := newMockProxyApp([]byte("mock_hash"), loadedAbciRes)
 
 		abciRes := new(sm.ABCIResponses)
-		abciRes.DeliverTx = make([]*abci.ResponseDeliverTx, len(loadedAbciRes.DeliverTx))
+		abciRes.DeliverTxs = make([]*abci.ResponseDeliverTx, len(loadedAbciRes.DeliverTxs))
 		// Execute transactions and get hash.
 		proxyCb := func(req *abci.Request, res *abci.Response) {
 			if r, ok := res.Value.(*abci.Response_DeliverTx); ok {
@@ -576,7 +576,7 @@ func TestMockProxyApp(t *testing.T) {
 					logger.Debug("Invalid tx", "code", txRes.Code, "log", txRes.Log)
 					invalidTxs++
 				}
-				abciRes.DeliverTx[txIndex] = txRes
+				abciRes.DeliverTxs[txIndex] = txRes
 				txIndex++
 			}
 		}

go.sum

@@ -191,6 +191,7 @@ github.com/syndtr/goleveldb v1.0.1-0.20190318030020-c3a204f8e965 h1:1oFLiOyVl+W7
 github.com/syndtr/goleveldb v1.0.1-0.20190318030020-c3a204f8e965/go.mod h1:9OrXJhf154huy1nPWmuSrkgjPUtUNhA+Zmy+6AESzuA=
 github.com/tendermint/go-amino v0.14.1 h1:o2WudxNfdLNBwMyl2dqOJxiro5rfrEaU0Ugs6offJMk=
 github.com/tendermint/go-amino v0.14.1/go.mod h1:i/UKE5Uocn+argJJBb12qTZsCDBcAYMbR92AaJVmKso=
+github.com/tendermint/tm-cmn v0.2.0 h1:7t7apCmQATegPtv75NLrKoQ3Mjo4jWcGjsedy43ANgE=
 github.com/tendermint/tm-db v0.2.0 h1:rJxgdqn6fIiVJZy4zLpY1qVlyD0TU6vhkT4kEf71TQQ=
 github.com/tendermint/tm-db v0.2.0/go.mod h1:0cPKWu2Mou3IlxecH+MEUSYc1Ch537alLe6CpFrKzgw=
 github.com/tmc/grpc-websocket-proxy v0.0.0-20190109142713-0ad062ec5ee5/go.mod h1:ncp9v5uamzpCO7NfCPTXjqaC+bZgJeR0sMTm6dMHP7U=

rpc/client/rpc_test.go

@@ -233,9 +233,9 @@ func TestAppCalls(t *testing.T) {
 		blockResults, err := c.BlockResults(&txh)
 		require.Nil(err, "%d: %+v", i, err)
 		assert.Equal(txh, blockResults.Height)
-		if assert.Equal(1, len(blockResults.Results.DeliverTx)) {
+		if assert.Equal(1, len(blockResults.TxsResults)) {
 			// check success code
-			assert.EqualValues(0, blockResults.Results.DeliverTx[0].Code)
+			assert.EqualValues(0, blockResults.TxsResults[0].Code)
 		}
 
 		// check blockchain info, now that we know there is info

rpc/core/blocks.go

@@ -124,11 +124,14 @@ func BlockResults(ctx *rpctypes.Context, heightPtr *int64) (*ctypes.ResultBlockR
 		return nil, err
 	}
 
-	res := &ctypes.ResultBlockResults{
+	return &ctypes.ResultBlockResults{
-		Height:  height,
+		Height:                height,
-		Results: results,
+		TxsResults:            results.DeliverTxs,
-	}
+		BeginBlockEvents:      results.BeginBlock.Events,
-	return res, nil
+		EndBlockEvents:        results.EndBlock.Events,
+		ValidatorUpdates:      results.EndBlock.ValidatorUpdates,
+		ConsensusParamUpdates: results.EndBlock.ConsensusParamUpdates,
+	}, nil
 }
 
 func getHeight(currentHeight int64, heightPtr *int64) (int64, error) {

rpc/core/blocks_test.go

@@ -4,11 +4,18 @@ import (
 	"fmt"
 	"testing"
 
+	"github.com/stretchr/testify/assert"
 	"github.com/stretchr/testify/require"
+
+	abci "github.com/tendermint/tendermint/abci/types"
+	ctypes "github.com/tendermint/tendermint/rpc/core/types"
+	rpctypes "github.com/tendermint/tendermint/rpc/lib/types"
+	sm "github.com/tendermint/tendermint/state"
+	"github.com/tendermint/tendermint/types"
+	dbm "github.com/tendermint/tm-db"
 )
 
 func TestBlockchainInfo(t *testing.T) {
-
 	cases := []struct {
 		min, max     int64
 		height       int64
@@ -54,5 +61,61 @@ func TestBlockchainInfo(t *testing.T) {
 			require.Equal(t, 1+max-min, c.resultLength, caseString)
 		}
 	}
-
+}
+
+func TestBlockResults(t *testing.T) {
+	results := &sm.ABCIResponses{
+		DeliverTxs: []*abci.ResponseDeliverTx{
+			{Code: 0, Data: []byte{0x01}, Log: "ok"},
+			{Code: 0, Data: []byte{0x02}, Log: "ok"},
+			{Code: 1, Log: "not ok"},
+		},
+		EndBlock:   &abci.ResponseEndBlock{},
+		BeginBlock: &abci.ResponseBeginBlock{},
+	}
+
+	stateDB = dbm.NewMemDB()
+	sm.SaveABCIResponses(stateDB, 100, results)
+	blockStore = mockBlockStore{height: 100}
+
+	testCases := []struct {
+		height  int64
+		wantErr bool
+		wantRes *ctypes.ResultBlockResults
+	}{
+		{-1, true, nil},
+		{0, true, nil},
+		{101, true, nil},
+		{100, false, &ctypes.ResultBlockResults{
+			Height:                100,
+			TxsResults:            results.DeliverTxs,
+			BeginBlockEvents:      results.BeginBlock.Events,
+			EndBlockEvents:        results.EndBlock.Events,
+			ValidatorUpdates:      results.EndBlock.ValidatorUpdates,
+			ConsensusParamUpdates: results.EndBlock.ConsensusParamUpdates,
+		}},
+	}
+
+	for _, tc := range testCases {
+		res, err := BlockResults(&rpctypes.Context{}, &tc.height)
+		if tc.wantErr {
+			assert.Error(t, err)
+		} else {
+			assert.NoError(t, err)
+			assert.Equal(t, tc.wantRes, res)
+		}
+	}
+}
+
+type mockBlockStore struct {
+	height int64
+}
+
+func (store mockBlockStore) Height() int64                               { return store.height }
+func (mockBlockStore) LoadBlockMeta(height int64) *types.BlockMeta       { return nil }
+func (mockBlockStore) LoadBlock(height int64) *types.Block               { return nil }
+func (mockBlockStore) LoadBlockPart(height int64, index int) *types.Part { return nil }
+func (mockBlockStore) LoadBlockCommit(height int64) *types.Commit        { return nil }
+func (mockBlockStore) LoadSeenCommit(height int64) *types.Commit         { return nil }
+func (mockBlockStore) SaveBlock(block *types.Block, blockParts *types.PartSet, seenCommit *types.Commit) {
 }

rpc/core/types/responses.go

@@ -9,7 +9,6 @@ import (
 	cmn "github.com/tendermint/tendermint/libs/common"
 
 	"github.com/tendermint/tendermint/p2p"
-	"github.com/tendermint/tendermint/state"
 	"github.com/tendermint/tendermint/types"
 )
 
@@ -38,8 +37,12 @@ type ResultCommit struct {
 
 // ABCI results from a block
 type ResultBlockResults struct {
-	Height  int64                `json:"height"`
+	Height                int64                     `json:"height"`
-	Results *state.ABCIResponses `json:"results"`
+	TxsResults            []*abci.ResponseDeliverTx `json:"txs_results"`
+	BeginBlockEvents      []abci.Event              `json:"begin_block_events"`
+	EndBlockEvents        []abci.Event              `json:"end_block_events"`
+	ValidatorUpdates      []abci.ValidatorUpdate    `json:"validator_updates"`
+	ConsensusParamUpdates *abci.ConsensusParams     `json:"consensus_param_updates"`
 }
 
 // NewResultCommit is a helper to initialize the ResultCommit with

rpc/swagger/swagger.yaml

@@ -1405,55 +1405,168 @@ definitions:
         type: "string"
         example: ""
       result:
+        type: "object"
         required:
           - "height"
-          - "results"
         properties:
           height:
             type: "string"
             example: "12"
-          results:
+          txs_results:
-            required:
+            type: "array"
-              - "deliver_tx"
+            x-nullable: true
-              - "end_block"
+            items:
-              - "begin_block"
+              type: "object"
-            properties:
+              properties:
-              deliver_tx:
+                code:
-                type: "array"
+                  type: "string"
-                x-nullable: true
+                  example: "0"
-                items:
+                data:
+                  type: "string"
+                  example: ""
+                log:
+                  type: "string"
+                  example: "not enough gas"
+                info:
+                  type: "string"
+                  example: ""
+                gasWanted:
+                  type: "string"
+                  example: "100"
+                gasUsed:
+                  type: "string"
+                  example: "100"
+                events:
+                  type: "array"
+                  x-nullable: true
+                  items:
+                    type: "object"
+                    properties:
+                      type:
+                        type: "string"
+                        example: "app"
+                      attributes:
+                        type: "array"
+                        x-nullable: false
+                        items:
+                          type: "object"
+                          properties:
+                            key:
+                              type: "string"
+                              example: "Y3JlYXRvcg=="
+                            value:
+                              type: "string"
+                              example: "Q29zbW9zaGkgTmV0b3dva28="
+                codespace:
+                  type: "string"
+                  example: "ibc"
+          begin_block_events:
+            type: "array"
+            x-nullable: true
+            items:
+              type: "object"
+              properties:
+                type:
+                  type: "string"
+                  example: "app"
+                attributes:
+                  type: "array"
+                  x-nullable: false
+                  items:
+                    type: "object"
+                    properties:
+                      key:
+                        type: "string"
+                        example: "Y3JlYXRvcg=="
+                      value:
+                        type: "string"
+                        example: "Q29zbW9zaGkgTmV0b3dva28="
+          end_block:
+            type: "array"
+            x-nullable: true
+            items:
+              type: "object"
+              properties:
+                type:
+                  type: "string"
+                  example: "app"
+                attributes:
+                  type: "array"
+                  x-nullable: false
+                  items:
+                    type: "object"
+                    properties:
+                      key:
+                        type: "string"
+                        example: "Y3JlYXRvcg=="
+                      value:
+                        type: "string"
+                        example: "Q29zbW9zaGkgTmV0b3dva28="
+          validator_updates:
+            type: "array"
+            x-nullable: true
+            items:
+              type: "object"
+              properties:
+                pub_key:
                   type: "object"
+                  required:
+                    - "type"
+                    - "value"
                   properties:
-                    log:
+                    type:
                       type: "string"
-                      example: '[{"msg_index":"0","success":true,"log":""}]'
+                      example: "tendermint/PubKeyEd25519"
-                    gasWanted:
+                    value:
                       type: "string"
-                      example: "25629"
+                      example: "9tK9IT+FPdf2qm+5c2qaxi10sWP+3erWTKgftn2PaQM="
-                    gasUsed:
+                power:
-                      type: "string"
+                  type: "string"
-                      example: "25629"
+                  example: "300"
-                    tags:
+          consensus_param_updates:
-                      type: "array"
-                      items:
-                        type: "object"
-                        properties:
-                          key:
-                            type: "string"
-                            example: "YWN0aW9u"
-                          value:
-                            type: "string"
-                            example: "c2VuZA=="
-              end_block:
-                required:
-                  - "validator_updates"
-                properties: {}
-                type: "object"
-              begin_block:
-                properties: {}
-                type: "object"
             type: "object"
-        type: "object"
+            x-nullable: true
+            required:
+              - "block"
+              - "evidence"
+              - "validator"
+            properties:
+              block:
+                type: "object"
+                required:
+                  - "max_bytes"
+                  - "max_gas"
+                  - "time_iota_ms"
+                properties:
+                  max_bytes:
+                    type: "string"
+                    example: "22020096"
+                  max_gas:
+                    type: "string"
+                    example: "1000"
+                  time_iota_ms:
+                    type: "string"
+                    example: "1000"
+              evidence:
+                type: "object"
+                required:
+                  - "max_age"
+                properties:
+                  max_age:
+                    type: "string"
+                    example: "100000"
+              validator:
+                type: "object"
+                required:
+                  - "pub_key_types"
+                properties:
+                  pub_key_types:
+                    type: "array"
+                    items:
+                      type: "string"
+                    example:
+                      - "ed25519"
+
   CommitResponse:
     type: "object"
     required:
@@ -1713,10 +1826,12 @@ definitions:
         type: "string"
         example: ""
       result:
+        type: "object"
         required:
           - "genesis"
         properties:
           genesis:
+            type: "object"
             required:
               - "genesis_time"
               - "chain_id"
@@ -1731,12 +1846,14 @@ definitions:
                 type: "string"
                 example: "cosmoshub-2"
               consensus_params:
+                type: "object"
                 required:
                   - "block"
                   - "evidence"
                   - "validator"
                 properties:
                   block:
+                    type: "object"
                     required:
                       - "max_bytes"
                       - "max_gas"
@@ -1744,23 +1861,23 @@ definitions:
                     properties:
                       max_bytes:
                         type: "string"
-                        example: "200000"
+                        example: "22020096"
                       max_gas:
                         type: "string"
-                        example: "2000000"
+                        example: "1000"
                       time_iota_ms:
                         type: "string"
                         example: "1000"
-                    type: "object"
                   evidence:
+                    type: "object"
                     required:
                       - "max_age"
                     properties:
                       max_age:
                         type: "string"
-                        example: "1000000"
+                        example: "100000"
-                    type: "object"
                   validator:
+                    type: "object"
                     required:
                       - "pub_key_types"
                     properties:
@@ -1770,8 +1887,6 @@ definitions:
                           type: "string"
                         example:
                           - "ed25519"
-                    type: "object"
-                type: "object"
               validators:
                 type: "array"
                 items:
@@ -1804,8 +1919,7 @@ definitions:
               app_state:
                 properties: {}
                 type: "object"
-            type: "object"
+
-        type: "object"
   DumpConsensusResponse:
     type: object
     required:
@@ -2236,6 +2350,7 @@ definitions:
         type: "string"
         example: ""
       result:
+        type: "object"
         required:
           - "block_height"
           - "consensus_params"
@@ -2244,12 +2359,14 @@ definitions:
             type: "string"
             example: "1313448"
           consensus_params:
+            type: "object"
             required:
               - "block"
               - "evidence"
               - "validator"
             properties:
               block:
+                type: "object"
                 required:
                   - "max_bytes"
                   - "max_gas"
@@ -2257,23 +2374,23 @@ definitions:
                 properties:
                   max_bytes:
                     type: "string"
-                    example: "200000"
+                    example: "22020096"
                   max_gas:
                     type: "string"
-                    example: "2000000"
+                    example: "1000"
                   time_iota_ms:
                     type: "string"
                     example: "1000"
-                type: "object"
               evidence:
+                type: "object"
                 required:
                   - "max_age"
                 properties:
                   max_age:
                     type: "string"
-                    example: "1000000"
+                    example: "100000"
-                type: "object"
               validator:
+                type: "object"
                 required:
                   - "pub_key_types"
                 properties:
@@ -2283,9 +2400,7 @@ definitions:
                       type: "string"
                     example:
                       - "ed25519"
-                type: "object"
+
-            type: "object"
-        type: "object"
   NumUnconfirmedTransactionsResponse:
     type: object
     required:

state/execution.go

@@ -138,7 +138,7 @@ func (blockExec *BlockExecutor) ApplyBlock(state State, blockID types.BlockID, b
 	fail.Fail() // XXX
 
 	// Save the results before we commit.
-	saveABCIResponses(blockExec.db, block.Height, abciResponses)
+	SaveABCIResponses(blockExec.db, block.Height, abciResponses)
 
 	fail.Fail() // XXX
 
@@ -163,7 +163,7 @@ func (blockExec *BlockExecutor) ApplyBlock(state State, blockID types.BlockID, b
 	}
 
 	// Lock mempool, commit app state, update mempoool.
-	appHash, err := blockExec.Commit(state, block, abciResponses.DeliverTx)
+	appHash, err := blockExec.Commit(state, block, abciResponses.DeliverTxs)
 	if err != nil {
 		return state, fmt.Errorf("Commit failed for application: %v", err)
 	}
@@ -267,7 +267,7 @@ func execBlockOnProxyApp(
 				logger.Debug("Invalid tx", "code", txRes.Code, "log", txRes.Log)
 				invalidTxs++
 			}
-			abciResponses.DeliverTx[txIndex] = txRes
+			abciResponses.DeliverTxs[txIndex] = txRes
 			txIndex++
 		}
 	}
@@ -475,7 +475,7 @@ func fireEvents(
 			Height: block.Height,
 			Index:  uint32(i),
 			Tx:     tx,
-			Result: *(abciResponses.DeliverTx[i]),
+			Result: *(abciResponses.DeliverTxs[i]),
 		}})
 	}
 

state/export_test.go

@@ -43,12 +43,6 @@ func CalcValidatorsKey(height int64) []byte {
 	return calcValidatorsKey(height)
 }
 
-// SaveABCIResponses is an alias for the private saveABCIResponses method in
-// store.go, exported exclusively and explicitly for testing.
-func SaveABCIResponses(db dbm.DB, height int64, abciResponses *ABCIResponses) {
-	saveABCIResponses(db, height, abciResponses)
-}
-
 // SaveConsensusParamsInfo is an alias for the private saveConsensusParamsInfo
 // method in store.go, exported exclusively and explicitly for testing.
 func SaveConsensusParamsInfo(db dbm.DB, nextHeight, changeHeight int64, params types.ConsensusParams) {

state/state_test.go

@@ -89,8 +89,8 @@ func TestABCIResponsesSaveLoad1(t *testing.T) {
 	// Build mock responses.
 	block := makeBlock(state, 2)
 	abciResponses := sm.NewABCIResponses(block)
-	abciResponses.DeliverTx[0] = &abci.ResponseDeliverTx{Data: []byte("foo"), Events: nil}
+	abciResponses.DeliverTxs[0] = &abci.ResponseDeliverTx{Data: []byte("foo"), Events: nil}
-	abciResponses.DeliverTx[1] = &abci.ResponseDeliverTx{Data: []byte("bar"), Log: "ok", Events: nil}
+	abciResponses.DeliverTxs[1] = &abci.ResponseDeliverTx{Data: []byte("bar"), Log: "ok", Events: nil}
 	abciResponses.EndBlock = &abci.ResponseEndBlock{ValidatorUpdates: []abci.ValidatorUpdate{
 		types.TM2PB.NewValidatorUpdate(ed25519.GenPrivKey().PubKey(), 10),
 	}}
@@ -158,7 +158,7 @@ func TestABCIResponsesSaveLoad2(t *testing.T) {
 	for i, tc := range cases {
 		h := int64(i + 1) // last block height, one below what we save
 		responses := &sm.ABCIResponses{
-			DeliverTx: tc.added,
+			DeliverTxs: tc.added,
 			EndBlock:  &abci.ResponseEndBlock{},
 		}
 		sm.SaveABCIResponses(stateDB, h, responses)

state/store.go

@@ -115,7 +115,7 @@ func saveState(db dbm.DB, state State, key []byte) {
 // of the various ABCI calls during block processing.
 // It is persisted to disk for each height before calling Commit.
 type ABCIResponses struct {
-	DeliverTx  []*abci.ResponseDeliverTx `json:"deliver_tx"`
+	DeliverTxs []*abci.ResponseDeliverTx `json:"deliver_txs"`
 	EndBlock   *abci.ResponseEndBlock    `json:"end_block"`
 	BeginBlock *abci.ResponseBeginBlock  `json:"begin_block"`
 }
@@ -128,7 +128,7 @@ func NewABCIResponses(block *types.Block) *ABCIResponses {
 		resDeliverTxs = nil
 	}
 	return &ABCIResponses{
-		DeliverTx: resDeliverTxs,
+		DeliverTxs: resDeliverTxs,
 	}
 }
 
@@ -138,7 +138,7 @@ func (arz *ABCIResponses) Bytes() []byte {
 }
 
 func (arz *ABCIResponses) ResultsHash() []byte {
-	results := types.NewResults(arz.DeliverTx)
+	results := types.NewResults(arz.DeliverTxs)
 	return results.Hash()
 }
 
@@ -165,8 +165,11 @@ func LoadABCIResponses(db dbm.DB, height int64) (*ABCIResponses, error) {
 
 // SaveABCIResponses persists the ABCIResponses to the database.
 // This is useful in case we crash after app.Commit and before s.Save().
-// Responses are indexed by height so they can also be loaded later to produce Merkle proofs.
+// Responses are indexed by height so they can also be loaded later to produce
-func saveABCIResponses(db dbm.DB, height int64, abciResponses *ABCIResponses) {
+// Merkle proofs.
+//
+// Exposed for testing.
+func SaveABCIResponses(db dbm.DB, height int64, abciResponses *ABCIResponses) {
 	db.SetSync(calcABCIResponsesKey(height), abciResponses.Bytes())
 }