Merge PR #4511: Fix YAML encoding of staking.Validator

* Fix YAML encoding of staking.Validator

Closes: #4508

* Address fede's comment

x/staking/types/validator.go

@@ -9,6 +9,7 @@ import (
 	abci "github.com/tendermint/tendermint/abci/types"
 	"github.com/tendermint/tendermint/crypto"
 	tmtypes "github.com/tendermint/tendermint/types"
+	"gopkg.in/yaml.v2"
 
 	"github.com/cosmos/cosmos-sdk/codec"
 	sdk "github.com/cosmos/cosmos-sdk/types"
@@ -48,6 +49,39 @@ type Validator struct {
 	MinSelfDelegation       sdk.Int        `json:"min_self_delegation"` // validator's self declared minimum self delegation
 }
 
+func (v Validator) MarshalYAML() (interface{}, error) {
+	bs, err := yaml.Marshal(struct {
+		OperatorAddress         sdk.ValAddress
+		ConsPubKey              string
+		Jailed                  bool
+		Status                  sdk.BondStatus
+		Tokens                  sdk.Int
+		DelegatorShares         sdk.Dec
+		Description             Description
+		UnbondingHeight         int64
+		UnbondingCompletionTime time.Time
+		Commission              Commission
+		MinSelfDelegation       sdk.Int
+	}{
+		OperatorAddress:         v.OperatorAddress,
+		ConsPubKey:              sdk.MustBech32ifyConsPub(v.ConsPubKey),
+		Jailed:                  v.Jailed,
+		Status:                  v.Status,
+		Tokens:                  v.Tokens,
+		DelegatorShares:         v.DelegatorShares,
+		Description:             v.Description,
+		UnbondingHeight:         v.UnbondingHeight,
+		UnbondingCompletionTime: v.UnbondingCompletionTime,
+		Commission:              v.Commission,
+		MinSelfDelegation:       v.MinSelfDelegation,
+	})
+	if err != nil {
+		return nil, err
+	}
+
+	return string(bs), nil
+}
+
 // Validators is a collection of Validator
 type Validators []Validator
 

x/staking/types/validator_test.go

@@ -1,14 +1,16 @@
 package types
 
 import (
+	"fmt"
 	"testing"
 
-	"github.com/cosmos/cosmos-sdk/codec"
-	sdk "github.com/cosmos/cosmos-sdk/types"
-
 	"github.com/stretchr/testify/assert"
 	"github.com/stretchr/testify/require"
 	tmtypes "github.com/tendermint/tendermint/types"
+	"gopkg.in/yaml.v2"
+
+	"github.com/cosmos/cosmos-sdk/codec"
+	sdk "github.com/cosmos/cosmos-sdk/types"
 )
 
 func TestValidatorTestEquivalent(t *testing.T) {
@@ -317,3 +319,34 @@ func TestValidatorSetInitialCommission(t *testing.T) {
 		}
 	}
 }
+
+func TestValidatorMarshalYAML(t *testing.T) {
+	validator := NewValidator(valAddr1, pk1, Description{})
+	bechifiedPub, err := sdk.Bech32ifyConsPub(validator.ConsPubKey)
+	require.NoError(t, err)
+	bs, err := yaml.Marshal(validator)
+	require.NoError(t, err)
+	want := fmt.Sprintf(`|
+  operatoraddress: %s
+  conspubkey: %s
+  jailed: false
+  status: 0
+  tokens: {}
+  delegatorshares: "0"
+  description:
+    moniker: ""
+    identity: ""
+    website: ""
+    details: ""
+  unbondingheight: 0
+  unbondingcompletiontime: 1970-01-01T00:00:00Z
+  commission:
+    commissionrates:
+      rate: "0"
+      maxrate: "0"
+      maxchangerate: "0"
+    updatetime: 1970-01-01T00:00:00Z
+  minselfdelegation: {}
+`, validator.OperatorAddress.String(), bechifiedPub)
+	require.Equal(t, want, string(bs))
+}