Implement SDL CLI 'healthcheck' -command
[ric-plt/sdlgo.git] / internal / sdlgoredis / sdlgoredis_test.go
index 469e8c4..287115b 100644 (file)
@@ -24,14 +24,13 @@ package sdlgoredis_test
 
 import (
        "errors"
-       "strconv"
-       "testing"
-       "time"
-
        "gerrit.o-ran-sc.org/r/ric-plt/sdlgo/internal/sdlgoredis"
-       "github.com/go-redis/redis"
+       "github.com/go-redis/redis/v7"
        "github.com/stretchr/testify/assert"
        "github.com/stretchr/testify/mock"
+       "strconv"
+       "testing"
+       "time"
 )
 
 type clientMock struct {
@@ -138,6 +137,23 @@ func (m *clientMock) ScriptLoad(script string) *redis.StringCmd {
        return m.Called(script).Get(0).(*redis.StringCmd)
 }
 
+func (m *clientMock) Info(section ...string) *redis.StringCmd {
+       return m.Called(section).Get(0).(*redis.StringCmd)
+}
+
+type MockRedisSentinel struct {
+       mock.Mock
+}
+
+func (m *MockRedisSentinel) Master(name string) *redis.StringStringMapCmd {
+       a := m.Called(name)
+       return a.Get(0).(*redis.StringStringMapCmd)
+}
+func (m *MockRedisSentinel) Slaves(name string) *redis.SliceCmd {
+       a := m.Called(name)
+       return a.Get(0).(*redis.SliceCmd)
+}
+
 func setSubscribeNotifications() (*pubSubMock, sdlgoredis.SubscribeFn) {
        mock := new(pubSubMock)
        return mock, func(client sdlgoredis.RedisClient, channels ...string) sdlgoredis.Subscriber {
@@ -150,16 +166,48 @@ func (m *MockOS) Getenv(key string, defValue string) string {
        return a.String(0)
 }
 
-func setup(commandsExists bool) (*pubSubMock, *clientMock, *sdlgoredis.DB) {
-       mock := new(clientMock)
-       pubSubMock, subscribeNotifications := setSubscribeNotifications()
-       db := sdlgoredis.CreateDB(mock, subscribeNotifications)
+type setupEv struct {
+       pubSubMock []*pubSubMock
+       rClient    []*clientMock
+       rSentinel  []*MockRedisSentinel
+       db         []*sdlgoredis.DB
+}
+
+func setupHaEnv(commandsExists bool) (*pubSubMock, *clientMock, *sdlgoredis.DB) {
+       psm, cm, _, db := setupHaEnvWithSentinels(commandsExists)
+       return psm, cm, db
+}
+
+func setupHaEnvWithSentinels(commandsExists bool) (*pubSubMock, *clientMock, []*MockRedisSentinel, *sdlgoredis.DB) {
+       setupVals := setupEnv(
+               commandsExists,
+               "service-ricplt-dbaas-tcp-cluster-0.ricplt",
+               "6376",
+               "dbaasmaster",
+               "26376",
+               "",
+               "3",
+       )
+       return setupVals.pubSubMock[0], setupVals.rClient[0], setupVals.rSentinel, setupVals.db[0]
+}
+
+func setupSingleEnv(commandsExists bool) (*pubSubMock, *clientMock, *sdlgoredis.DB) {
+       setupVals := setupEnv(
+               commandsExists,
+               "service-ricplt-dbaas-tcp-cluster-0.ricplt",
+               "6376", "", "", "", "",
+       )
+       return setupVals.pubSubMock[0], setupVals.rClient[0], setupVals.db[0]
+}
+
+func setupEnv(commandsExists bool, host, port, msname, sntport, clsaddrlist, nodeCnt string) setupEv {
+       var ret setupEv
 
        dummyCommandInfo := redis.CommandInfo{
                Name: "dummy",
        }
-       cmdResult := make(map[string]*redis.CommandInfo, 0)
 
+       cmdResult := make(map[string]*redis.CommandInfo, 0)
        if commandsExists {
                cmdResult = map[string]*redis.CommandInfo{
                        "setie":    &dummyCommandInfo,
@@ -175,45 +223,41 @@ func setup(commandsExists bool) (*pubSubMock, *clientMock, *sdlgoredis.DB) {
                }
        }
 
-       mock.On("Command").Return(redis.NewCommandsInfoCmdResult(cmdResult, nil))
-       db.CheckCommands()
-       return pubSubMock, mock, db
-}
-
-func setupEnv(host, port, msname, sntport, clsaddrlist string) ([]*clientMock, []*sdlgoredis.DB) {
-       var clmocks []*clientMock
-
-       dummyCommandInfo := redis.CommandInfo{
-               Name: "dummy",
-       }
-       cmdResult := make(map[string]*redis.CommandInfo, 0)
-
-       cmdResult = map[string]*redis.CommandInfo{
-               "dummy": &dummyCommandInfo,
-       }
-
        osmock := new(MockOS)
        osmock.On("Getenv", "DBAAS_SERVICE_HOST", "localhost").Return(host)
        osmock.On("Getenv", "DBAAS_SERVICE_PORT", "6379").Return(port)
        osmock.On("Getenv", "DBAAS_MASTER_NAME", "").Return(msname)
        osmock.On("Getenv", "DBAAS_SERVICE_SENTINEL_PORT", "").Return(sntport)
        osmock.On("Getenv", "DBAAS_CLUSTER_ADDR_LIST", "").Return(clsaddrlist)
+       osmock.On("Getenv", "DBAAS_SERVICE_NODE_COUNT", "").Return(nodeCnt)
 
+       pubSubMock, subscribeNotifications := setSubscribeNotifications()
+       smock := new(MockRedisSentinel)
+       ret.rSentinel = append(ret.rSentinel, smock)
        clients := sdlgoredis.ReadConfigAndCreateDbClients(
                osmock,
                func(addr, port, clusterName string, isHa bool) sdlgoredis.RedisClient {
                        clm := new(clientMock)
                        clm.On("Command").Return(redis.NewCommandsInfoCmdResult(cmdResult, nil))
-                       clmocks = append(clmocks, clm)
+                       ret.rClient = append(ret.rClient, clm)
+                       ret.pubSubMock = append(ret.pubSubMock, pubSubMock)
                        return clm
                },
+               subscribeNotifications,
+               func(cfg *sdlgoredis.Config, addr string) *sdlgoredis.Sentinel {
+                       s := &sdlgoredis.Sentinel{
+                               IredisSentinelClient: smock,
+                               Cfg:                  cfg,
+                       }
+                       return s
+               },
        )
-
-       return clmocks, clients
+       ret.db = clients
+       return ret
 }
 
 func TestCloseDbSuccessfully(t *testing.T) {
-       _, r, db := setup(true)
+       _, r, db := setupHaEnv(true)
        r.On("Close").Return(nil)
        err := db.CloseDB()
        assert.Nil(t, err)
@@ -221,7 +265,7 @@ func TestCloseDbSuccessfully(t *testing.T) {
 }
 
 func TestCloseDbFailure(t *testing.T) {
-       _, r, db := setup(true)
+       _, r, db := setupHaEnv(true)
        r.On("Close").Return(errors.New("Some error"))
        err := db.CloseDB()
        assert.NotNil(t, err)
@@ -229,7 +273,7 @@ func TestCloseDbFailure(t *testing.T) {
 }
 
 func TestMSetSuccessfully(t *testing.T) {
-       _, r, db := setup(true)
+       _, r, db := setupHaEnv(true)
        expectedKeysAndValues := []interface{}{"key1", "value1", "key2", 2}
        r.On("MSet", expectedKeysAndValues).Return(redis.NewStatusResult("OK", nil))
        err := db.MSet("key1", "value1", "key2", 2)
@@ -238,7 +282,7 @@ func TestMSetSuccessfully(t *testing.T) {
 }
 
 func TestMSetFailure(t *testing.T) {
-       _, r, db := setup(true)
+       _, r, db := setupHaEnv(true)
        expectedKeysAndValues := []interface{}{"key1", "value1", "key2", 2}
        r.On("MSet", expectedKeysAndValues).Return(redis.NewStatusResult("OK", errors.New("Some error")))
        err := db.MSet("key1", "value1", "key2", 2)
@@ -247,7 +291,7 @@ func TestMSetFailure(t *testing.T) {
 }
 
 func TestMSetMPubSuccessfully(t *testing.T) {
-       _, r, db := setup(true)
+       _, r, db := setupHaEnv(true)
        expectedMessage := []interface{}{"MSETMPUB", 2, 2, "key1", "val1", "key2", "val2",
                "chan1", "event1", "chan2", "event2"}
        r.On("Do", expectedMessage).Return(redis.NewCmdResult("", nil))
@@ -257,7 +301,7 @@ func TestMSetMPubSuccessfully(t *testing.T) {
 }
 
 func TestMsetMPubFailure(t *testing.T) {
-       _, r, db := setup(true)
+       _, r, db := setupHaEnv(true)
        expectedMessage := []interface{}{"MSETMPUB", 2, 2, "key1", "val1", "key2", "val2",
                "chan1", "event1", "chan2", "event2"}
        r.On("Do", expectedMessage).Return(redis.NewCmdResult("", errors.New("Some error")))
@@ -267,7 +311,7 @@ func TestMsetMPubFailure(t *testing.T) {
 }
 
 func TestMSetMPubCommandMissing(t *testing.T) {
-       _, r, db := setup(false)
+       _, r, db := setupHaEnv(false)
        expectedMessage := []interface{}{"MSETMPUB", 2, 2, "key1", "val1", "key2", "val2",
                "chan1", "event1", "chan2", "event2"}
        r.AssertNotCalled(t, "Do", expectedMessage)
@@ -278,7 +322,7 @@ func TestMSetMPubCommandMissing(t *testing.T) {
 }
 
 func TestMGetSuccessfully(t *testing.T) {
-       _, r, db := setup(true)
+       _, r, db := setupHaEnv(true)
        expectedKeys := []string{"key1", "key2", "key3"}
        expectedResult := []interface{}{"val1", 2, nil}
        r.On("MGet", expectedKeys).Return(redis.NewSliceResult(expectedResult, nil))
@@ -289,7 +333,7 @@ func TestMGetSuccessfully(t *testing.T) {
 }
 
 func TestMGetFailure(t *testing.T) {
-       _, r, db := setup(true)
+       _, r, db := setupHaEnv(true)
        expectedKeys := []string{"key1", "key2", "key3"}
        expectedResult := []interface{}{nil}
        r.On("MGet", expectedKeys).Return(redis.NewSliceResult(expectedResult,
@@ -301,7 +345,7 @@ func TestMGetFailure(t *testing.T) {
 }
 
 func TestDelMPubSuccessfully(t *testing.T) {
-       _, r, db := setup(true)
+       _, r, db := setupHaEnv(true)
        expectedMessage := []interface{}{"DELMPUB", 2, 2, "key1", "key2", "chan1", "event1",
                "chan2", "event2"}
        r.On("Do", expectedMessage).Return(redis.NewCmdResult("", nil))
@@ -311,7 +355,7 @@ func TestDelMPubSuccessfully(t *testing.T) {
 }
 
 func TestDelMPubFailure(t *testing.T) {
-       _, r, db := setup(true)
+       _, r, db := setupHaEnv(true)
        expectedMessage := []interface{}{"DELMPUB", 2, 2, "key1", "key2", "chan1", "event1",
                "chan2", "event2"}
        r.On("Do", expectedMessage).Return(redis.NewCmdResult("", errors.New("Some error")))
@@ -321,7 +365,7 @@ func TestDelMPubFailure(t *testing.T) {
 }
 
 func TestDelMPubCommandMissing(t *testing.T) {
-       _, r, db := setup(false)
+       _, r, db := setupHaEnv(false)
        expectedMessage := []interface{}{"DELMPUB", 2, 2, "key1", "key2", "chan1", "event1",
                "chan2", "event2"}
        r.AssertNotCalled(t, "Do", expectedMessage)
@@ -331,7 +375,7 @@ func TestDelMPubCommandMissing(t *testing.T) {
 }
 
 func TestDelSuccessfully(t *testing.T) {
-       _, r, db := setup(true)
+       _, r, db := setupHaEnv(true)
        expectedKeys := []string{"key1", "key2"}
        r.On("Del", expectedKeys).Return(redis.NewIntResult(2, nil))
        assert.Nil(t, db.Del([]string{"key1", "key2"}))
@@ -339,7 +383,7 @@ func TestDelSuccessfully(t *testing.T) {
 }
 
 func TestDelFailure(t *testing.T) {
-       _, r, db := setup(true)
+       _, r, db := setupHaEnv(true)
        expectedKeys := []string{"key1", "key2"}
        r.On("Del", expectedKeys).Return(redis.NewIntResult(2, errors.New("Some error")))
        assert.NotNil(t, db.Del([]string{"key1", "key2"}))
@@ -347,7 +391,7 @@ func TestDelFailure(t *testing.T) {
 }
 
 func TestKeysSuccessfully(t *testing.T) {
-       _, r, db := setup(true)
+       _, r, db := setupHaEnv(true)
        expectedPattern := "pattern*"
        expectedResult := []string{"pattern1", "pattern2"}
        r.On("Keys", expectedPattern).Return(redis.NewStringSliceResult(expectedResult, nil))
@@ -358,7 +402,7 @@ func TestKeysSuccessfully(t *testing.T) {
 }
 
 func TestKeysFailure(t *testing.T) {
-       _, r, db := setup(true)
+       _, r, db := setupHaEnv(true)
        expectedPattern := "pattern*"
        expectedResult := []string{}
        r.On("Keys", expectedPattern).Return(redis.NewStringSliceResult(expectedResult,
@@ -369,7 +413,7 @@ func TestKeysFailure(t *testing.T) {
 }
 
 func TestSetIEKeyExists(t *testing.T) {
-       _, r, db := setup(true)
+       _, r, db := setupHaEnv(true)
        expectedMessage := []interface{}{"SETIE", "key", "newdata", "olddata"}
        r.On("Do", expectedMessage).Return(redis.NewCmdResult("OK", nil))
        result, err := db.SetIE("key", "olddata", "newdata")
@@ -379,7 +423,7 @@ func TestSetIEKeyExists(t *testing.T) {
 }
 
 func TestSetIEKeyDoesntExists(t *testing.T) {
-       _, r, db := setup(true)
+       _, r, db := setupHaEnv(true)
        expectedMessage := []interface{}{"SETIE", "key", "newdata", "olddata"}
        r.On("Do", expectedMessage).Return(redis.NewCmdResult(nil, nil))
        result, err := db.SetIE("key", "olddata", "newdata")
@@ -389,7 +433,7 @@ func TestSetIEKeyDoesntExists(t *testing.T) {
 }
 
 func TestSetIEFailure(t *testing.T) {
-       _, r, db := setup(true)
+       _, r, db := setupHaEnv(true)
        expectedMessage := []interface{}{"SETIE", "key", "newdata", "olddata"}
        r.On("Do", expectedMessage).Return(redis.NewCmdResult(nil, errors.New("Some error")))
        result, err := db.SetIE("key", "olddata", "newdata")
@@ -399,7 +443,7 @@ func TestSetIEFailure(t *testing.T) {
 }
 
 func TestSetIECommandMissing(t *testing.T) {
-       _, r, db := setup(false)
+       _, r, db := setupHaEnv(false)
        expectedMessage := []interface{}{"SETIE", "key", "newdata", "olddata"}
        r.AssertNotCalled(t, "Do", expectedMessage)
        result, err := db.SetIE("key", "olddata", "newdata")
@@ -409,7 +453,7 @@ func TestSetIECommandMissing(t *testing.T) {
 }
 
 func TestSetIEPubKeyExists(t *testing.T) {
-       _, r, db := setup(true)
+       _, r, db := setupHaEnv(true)
        expectedMessage := []interface{}{"SETIEMPUB", "key", "newdata", "olddata", "channel", "message"}
        r.On("Do", expectedMessage).Return(redis.NewCmdResult("OK", nil))
        result, err := db.SetIEPub([]string{"channel", "message"}, "key", "olddata", "newdata")
@@ -419,7 +463,7 @@ func TestSetIEPubKeyExists(t *testing.T) {
 }
 
 func TestSetIEPubKeyDoesntExists(t *testing.T) {
-       _, r, db := setup(true)
+       _, r, db := setupHaEnv(true)
        expectedMessage := []interface{}{"SETIEMPUB", "key", "newdata", "olddata", "channel", "message"}
        r.On("Do", expectedMessage).Return(redis.NewCmdResult(nil, nil))
        result, err := db.SetIEPub([]string{"channel", "message"}, "key", "olddata", "newdata")
@@ -429,7 +473,7 @@ func TestSetIEPubKeyDoesntExists(t *testing.T) {
 }
 
 func TestSetIEPubFailure(t *testing.T) {
-       _, r, db := setup(true)
+       _, r, db := setupHaEnv(true)
        expectedMessage := []interface{}{"SETIEMPUB", "key", "newdata", "olddata", "channel", "message"}
        r.On("Do", expectedMessage).Return(redis.NewCmdResult(nil, errors.New("Some error")))
        result, err := db.SetIEPub([]string{"channel", "message"}, "key", "olddata", "newdata")
@@ -439,7 +483,7 @@ func TestSetIEPubFailure(t *testing.T) {
 }
 
 func TestSetIEPubCommandMissing(t *testing.T) {
-       _, r, db := setup(false)
+       _, r, db := setupHaEnv(false)
        expectedMessage := []interface{}{"SETIEMPUB", "key", "newdata", "olddata", "channel", "message"}
        r.AssertNotCalled(t, "Do", expectedMessage)
        result, err := db.SetIEPub([]string{"channel", "message"}, "key", "olddata", "newdata")
@@ -449,7 +493,7 @@ func TestSetIEPubCommandMissing(t *testing.T) {
 }
 
 func TestSetNXPubKeyDoesntExist(t *testing.T) {
-       _, r, db := setup(true)
+       _, r, db := setupHaEnv(true)
        expectedMessage := []interface{}{"SETNXMPUB", "key", "data", "channel", "message"}
        r.On("Do", expectedMessage).Return(redis.NewCmdResult("OK", nil))
        result, err := db.SetNXPub([]string{"channel", "message"}, "key", "data")
@@ -459,7 +503,7 @@ func TestSetNXPubKeyDoesntExist(t *testing.T) {
 }
 
 func TestSetNXPubKeyExists(t *testing.T) {
-       _, r, db := setup(true)
+       _, r, db := setupHaEnv(true)
        expectedMessage := []interface{}{"SETNXMPUB", "key", "data", "channel", "message"}
        r.On("Do", expectedMessage).Return(redis.NewCmdResult(nil, nil))
        result, err := db.SetNXPub([]string{"channel", "message"}, "key", "data")
@@ -469,7 +513,7 @@ func TestSetNXPubKeyExists(t *testing.T) {
 }
 
 func TestSetNXPubFailure(t *testing.T) {
-       _, r, db := setup(true)
+       _, r, db := setupHaEnv(true)
        expectedMessage := []interface{}{"SETNXMPUB", "key", "data", "channel", "message"}
        r.On("Do", expectedMessage).Return(redis.NewCmdResult(nil, errors.New("Some error")))
        result, err := db.SetNXPub([]string{"channel", "message"}, "key", "data")
@@ -479,7 +523,7 @@ func TestSetNXPubFailure(t *testing.T) {
 }
 
 func TestSetNXPubCommandMissing(t *testing.T) {
-       _, r, db := setup(false)
+       _, r, db := setupHaEnv(false)
        expectedMessage := []interface{}{"SETNXMPUB", "key", "data", "channel", "message"}
        r.AssertNotCalled(t, "Do", expectedMessage)
        result, err := db.SetNXPub([]string{"channel", "message"}, "key", "data")
@@ -489,7 +533,7 @@ func TestSetNXPubCommandMissing(t *testing.T) {
 }
 
 func TestSetNXSuccessfully(t *testing.T) {
-       _, r, db := setup(true)
+       _, r, db := setupHaEnv(true)
        expectedKey := "key"
        expectedData := "data"
        r.On("SetNX", expectedKey, expectedData, time.Duration(0)).Return(redis.NewBoolResult(true, nil))
@@ -500,7 +544,7 @@ func TestSetNXSuccessfully(t *testing.T) {
 }
 
 func TestSetNXUnsuccessfully(t *testing.T) {
-       _, r, db := setup(true)
+       _, r, db := setupHaEnv(true)
        expectedKey := "key"
        expectedData := "data"
        r.On("SetNX", expectedKey, expectedData, time.Duration(0)).Return(redis.NewBoolResult(false, nil))
@@ -511,7 +555,7 @@ func TestSetNXUnsuccessfully(t *testing.T) {
 }
 
 func TestSetNXFailure(t *testing.T) {
-       _, r, db := setup(true)
+       _, r, db := setupHaEnv(true)
        expectedKey := "key"
        expectedData := "data"
        r.On("SetNX", expectedKey, expectedData, time.Duration(0)).
@@ -523,7 +567,7 @@ func TestSetNXFailure(t *testing.T) {
 }
 
 func TestDelIEPubKeyDoesntExist(t *testing.T) {
-       _, r, db := setup(true)
+       _, r, db := setupHaEnv(true)
        expectedMessage := []interface{}{"DELIEMPUB", "key", "data", "channel", "message"}
        r.On("Do", expectedMessage).Return(redis.NewCmdResult(int64(0), nil))
        result, err := db.DelIEPub([]string{"channel", "message"}, "key", "data")
@@ -533,7 +577,7 @@ func TestDelIEPubKeyDoesntExist(t *testing.T) {
 }
 
 func TestDelIEPubKeyExists(t *testing.T) {
-       _, r, db := setup(true)
+       _, r, db := setupHaEnv(true)
        expectedMessage := []interface{}{"DELIEMPUB", "key", "data", "channel", "message"}
        r.On("Do", expectedMessage).Return(redis.NewCmdResult(int64(1), nil))
        result, err := db.DelIEPub([]string{"channel", "message"}, "key", "data")
@@ -543,7 +587,7 @@ func TestDelIEPubKeyExists(t *testing.T) {
 }
 
 func TestDelIEPubKeyExistsIntTypeRedisValue(t *testing.T) {
-       _, r, db := setup(true)
+       _, r, db := setupHaEnv(true)
        expectedMessage := []interface{}{"DELIEMPUB", "key", "data", "channel", "message"}
        r.On("Do", expectedMessage).Return(redis.NewCmdResult(1, nil))
        result, err := db.DelIEPub([]string{"channel", "message"}, "key", "data")
@@ -553,7 +597,7 @@ func TestDelIEPubKeyExistsIntTypeRedisValue(t *testing.T) {
 }
 
 func TestDelIEPubFailure(t *testing.T) {
-       _, r, db := setup(true)
+       _, r, db := setupHaEnv(true)
        expectedMessage := []interface{}{"DELIEMPUB", "key", "data", "channel", "message"}
        r.On("Do", expectedMessage).Return(redis.NewCmdResult(int64(0), errors.New("Some error")))
        result, err := db.DelIEPub([]string{"channel", "message"}, "key", "data")
@@ -563,7 +607,7 @@ func TestDelIEPubFailure(t *testing.T) {
 }
 
 func TestDelIEPubCommandMissing(t *testing.T) {
-       _, r, db := setup(false)
+       _, r, db := setupHaEnv(false)
        expectedMessage := []interface{}{"DELIEMPUB", "key", "data", "channel", "message"}
        r.AssertNotCalled(t, "Do", expectedMessage)
        result, err := db.DelIEPub([]string{"channel", "message"}, "key", "data")
@@ -573,7 +617,7 @@ func TestDelIEPubCommandMissing(t *testing.T) {
 }
 
 func TestDelIEKeyDoesntExist(t *testing.T) {
-       _, r, db := setup(true)
+       _, r, db := setupHaEnv(true)
        expectedMessage := []interface{}{"DELIE", "key", "data"}
        r.On("Do", expectedMessage).Return(redis.NewCmdResult(int64(0), nil))
        result, err := db.DelIE("key", "data")
@@ -583,7 +627,7 @@ func TestDelIEKeyDoesntExist(t *testing.T) {
 }
 
 func TestDelIEKeyExists(t *testing.T) {
-       _, r, db := setup(true)
+       _, r, db := setupHaEnv(true)
        expectedMessage := []interface{}{"DELIE", "key", "data"}
        r.On("Do", expectedMessage).Return(redis.NewCmdResult(int64(1), nil))
        result, err := db.DelIE("key", "data")
@@ -593,7 +637,7 @@ func TestDelIEKeyExists(t *testing.T) {
 }
 
 func TestDelIEKeyExistsIntTypeRedisValue(t *testing.T) {
-       _, r, db := setup(true)
+       _, r, db := setupHaEnv(true)
        expectedMessage := []interface{}{"DELIE", "key", "data"}
        r.On("Do", expectedMessage).Return(redis.NewCmdResult(1, nil))
        result, err := db.DelIE("key", "data")
@@ -603,7 +647,7 @@ func TestDelIEKeyExistsIntTypeRedisValue(t *testing.T) {
 }
 
 func TestDelIEFailure(t *testing.T) {
-       _, r, db := setup(true)
+       _, r, db := setupHaEnv(true)
        expectedMessage := []interface{}{"DELIE", "key", "data"}
        r.On("Do", expectedMessage).Return(redis.NewCmdResult(int64(0), errors.New("Some error")))
        result, err := db.DelIE("key", "data")
@@ -613,7 +657,7 @@ func TestDelIEFailure(t *testing.T) {
 }
 
 func TestDelIECommandMissing(t *testing.T) {
-       _, r, db := setup(false)
+       _, r, db := setupHaEnv(false)
        expectedMessage := []interface{}{"DELIE", "key", "data"}
        r.AssertNotCalled(t, "Do", expectedMessage)
        result, err := db.DelIE("key", "data")
@@ -623,7 +667,7 @@ func TestDelIECommandMissing(t *testing.T) {
 }
 
 func TestSAddSuccessfully(t *testing.T) {
-       _, r, db := setup(true)
+       _, r, db := setupHaEnv(true)
        expectedKey := "key"
        expectedData := []interface{}{"data", 2}
        r.On("SAdd", expectedKey, expectedData).Return(redis.NewIntResult(2, nil))
@@ -632,7 +676,7 @@ func TestSAddSuccessfully(t *testing.T) {
 }
 
 func TestSAddFailure(t *testing.T) {
-       _, r, db := setup(true)
+       _, r, db := setupHaEnv(true)
        expectedKey := "key"
        expectedData := []interface{}{"data", 2}
        r.On("SAdd", expectedKey, expectedData).Return(redis.NewIntResult(2, errors.New("Some error")))
@@ -641,7 +685,7 @@ func TestSAddFailure(t *testing.T) {
 }
 
 func TestSRemSuccessfully(t *testing.T) {
-       _, r, db := setup(true)
+       _, r, db := setupHaEnv(true)
        expectedKey := "key"
        expectedData := []interface{}{"data", 2}
        r.On("SRem", expectedKey, expectedData).Return(redis.NewIntResult(2, nil))
@@ -650,7 +694,7 @@ func TestSRemSuccessfully(t *testing.T) {
 }
 
 func TestSRemFailure(t *testing.T) {
-       _, r, db := setup(true)
+       _, r, db := setupHaEnv(true)
        expectedKey := "key"
        expectedData := []interface{}{"data", 2}
        r.On("SRem", expectedKey, expectedData).Return(redis.NewIntResult(2, errors.New("Some error")))
@@ -659,7 +703,7 @@ func TestSRemFailure(t *testing.T) {
 }
 
 func TestSMembersSuccessfully(t *testing.T) {
-       _, r, db := setup(true)
+       _, r, db := setupHaEnv(true)
        expectedKey := "key"
        expectedResult := []string{"member1", "member2"}
        r.On("SMembers", expectedKey).Return(redis.NewStringSliceResult(expectedResult, nil))
@@ -670,7 +714,7 @@ func TestSMembersSuccessfully(t *testing.T) {
 }
 
 func TestSMembersFailure(t *testing.T) {
-       _, r, db := setup(true)
+       _, r, db := setupHaEnv(true)
        expectedKey := "key"
        expectedResult := []string{"member1", "member2"}
        r.On("SMembers", expectedKey).Return(redis.NewStringSliceResult(expectedResult,
@@ -682,7 +726,7 @@ func TestSMembersFailure(t *testing.T) {
 }
 
 func TestSIsMemberIsMember(t *testing.T) {
-       _, r, db := setup(true)
+       _, r, db := setupHaEnv(true)
        expectedKey := "key"
        expectedData := "data"
        r.On("SIsMember", expectedKey, expectedData).Return(redis.NewBoolResult(true, nil))
@@ -693,7 +737,7 @@ func TestSIsMemberIsMember(t *testing.T) {
 }
 
 func TestSIsMemberIsNotMember(t *testing.T) {
-       _, r, db := setup(true)
+       _, r, db := setupHaEnv(true)
        expectedKey := "key"
        expectedData := "data"
        r.On("SIsMember", expectedKey, expectedData).Return(redis.NewBoolResult(false, nil))
@@ -704,7 +748,7 @@ func TestSIsMemberIsNotMember(t *testing.T) {
 }
 
 func TestSIsMemberFailure(t *testing.T) {
-       _, r, db := setup(true)
+       _, r, db := setupHaEnv(true)
        expectedKey := "key"
        expectedData := "data"
        r.On("SIsMember", expectedKey, expectedData).
@@ -716,7 +760,7 @@ func TestSIsMemberFailure(t *testing.T) {
 }
 
 func TestSCardSuccessfully(t *testing.T) {
-       _, r, db := setup(true)
+       _, r, db := setupHaEnv(true)
        expectedKey := "key"
        r.On("SCard", expectedKey).Return(redis.NewIntResult(1, nil))
        result, err := db.SCard("key")
@@ -726,7 +770,7 @@ func TestSCardSuccessfully(t *testing.T) {
 }
 
 func TestSCardFailure(t *testing.T) {
-       _, r, db := setup(true)
+       _, r, db := setupHaEnv(true)
        expectedKey := "key"
        r.On("SCard", expectedKey).Return(redis.NewIntResult(1, errors.New("Some error")))
        result, err := db.SCard("key")
@@ -736,7 +780,7 @@ func TestSCardFailure(t *testing.T) {
 }
 
 func TestSubscribeChannelDBSubscribeRXUnsubscribe(t *testing.T) {
-       ps, r, db := setup(true)
+       ps, r, db := setupHaEnv(true)
        ch := make(chan *redis.Message)
        msg := redis.Message{
                Channel: "{prefix}channel",
@@ -762,7 +806,7 @@ func TestSubscribeChannelDBSubscribeRXUnsubscribe(t *testing.T) {
 }
 
 func TestSubscribeChannelDBSubscribeTwoUnsubscribeOne(t *testing.T) {
-       ps, r, db := setup(true)
+       ps, r, db := setupHaEnv(true)
        ch := make(chan *redis.Message)
        msg1 := redis.Message{
                Channel: "{prefix}channel1",
@@ -805,7 +849,7 @@ func TestSubscribeChannelDBSubscribeTwoUnsubscribeOne(t *testing.T) {
 }
 
 func TestSubscribeChannelReDBSubscribeAfterUnsubscribe(t *testing.T) {
-       ps, r, db := setup(true)
+       ps, r, db := setupHaEnv(true)
        ch := make(chan *redis.Message)
        msg := redis.Message{
                Channel: "{prefix}channel",
@@ -841,7 +885,7 @@ func TestSubscribeChannelReDBSubscribeAfterUnsubscribe(t *testing.T) {
 }
 
 func TestPTTLSuccessfully(t *testing.T) {
-       _, r, db := setup(true)
+       _, r, db := setupHaEnv(true)
        expectedKey := "key"
        expectedResult := time.Duration(1)
        r.On("PTTL", expectedKey).Return(redis.NewDurationResult(expectedResult,
@@ -853,7 +897,7 @@ func TestPTTLSuccessfully(t *testing.T) {
 }
 
 func TestPTTLFailure(t *testing.T) {
-       _, r, db := setup(true)
+       _, r, db := setupHaEnv(true)
        expectedKey := "key"
        expectedResult := time.Duration(1)
        r.On("PTTL", expectedKey).Return(redis.NewDurationResult(expectedResult,
@@ -865,7 +909,7 @@ func TestPTTLFailure(t *testing.T) {
 }
 
 func TestPExpireIESuccessfully(t *testing.T) {
-       _, r, db := setup(true)
+       _, r, db := setupHaEnv(true)
        expectedKey := "key"
        expectedData := "data"
        expectedDuration := strconv.FormatInt(int64(10000), 10)
@@ -879,7 +923,7 @@ func TestPExpireIESuccessfully(t *testing.T) {
 }
 
 func TestPExpireIEFailure(t *testing.T) {
-       _, r, db := setup(true)
+       _, r, db := setupHaEnv(true)
        expectedKey := "key"
        expectedData := "data"
        expectedDuration := strconv.FormatInt(int64(10000), 10)
@@ -893,7 +937,7 @@ func TestPExpireIEFailure(t *testing.T) {
 }
 
 func TestPExpireIELockNotHeld(t *testing.T) {
-       _, r, db := setup(true)
+       _, r, db := setupHaEnv(true)
        expectedKey := "key"
        expectedData := "data"
        expectedDuration := strconv.FormatInt(int64(10000), 10)
@@ -907,73 +951,330 @@ func TestPExpireIELockNotHeld(t *testing.T) {
 }
 
 func TestClientStandaloneRedisLegacyEnv(t *testing.T) {
-       rcls, dbs := setupEnv(
-               "service-ricplt-dbaas-tcp-cluster-0.ricplt", "6376", "", "", "",
+       setupVals := setupEnv(
+               true,
+               "service-ricplt-dbaas-tcp-cluster-0.ricplt", "6376", "", "", "", "",
        )
-       assert.Equal(t, 1, len(rcls))
-       assert.Equal(t, 1, len(dbs))
+       assert.Equal(t, 1, len(setupVals.rClient))
+       assert.Equal(t, 1, len(setupVals.db))
 
        expectedKeysAndValues := []interface{}{"key1", "value1"}
-       rcls[0].On("MSet", expectedKeysAndValues).Return(redis.NewStatusResult("OK", nil))
-       err := dbs[0].MSet("key1", "value1")
+       setupVals.rClient[0].On("MSet", expectedKeysAndValues).Return(redis.NewStatusResult("OK", nil))
+       err := setupVals.db[0].MSet("key1", "value1")
        assert.Nil(t, err)
-       rcls[0].AssertExpectations(t)
+       setupVals.rClient[0].AssertExpectations(t)
 }
 
 func TestClientSentinelRedisLegacyEnv(t *testing.T) {
-       rcls, dbs := setupEnv(
-               "service-ricplt-dbaas-tcp-cluster-0.ricplt", "6376", "dbaasmaster", "26376", "",
+       setupVals := setupEnv(
+               true,
+               "service-ricplt-dbaas-tcp-cluster-0.ricplt", "6376", "dbaasmaster", "26376", "", "3",
        )
-       assert.Equal(t, 1, len(rcls))
-       assert.Equal(t, 1, len(dbs))
+       assert.Equal(t, 1, len(setupVals.rClient))
+       assert.Equal(t, 1, len(setupVals.db))
 
        expectedKeysAndValues := []interface{}{"key1", "value1"}
-       rcls[0].On("MSet", expectedKeysAndValues).Return(redis.NewStatusResult("OK", nil))
-       err := dbs[0].MSet("key1", "value1")
+       setupVals.rClient[0].On("MSet", expectedKeysAndValues).Return(redis.NewStatusResult("OK", nil))
+       err := setupVals.db[0].MSet("key1", "value1")
        assert.Nil(t, err)
-       rcls[0].AssertExpectations(t)
+       setupVals.rClient[0].AssertExpectations(t)
 }
 
 func TestClientTwoStandaloneRedisEnvs(t *testing.T) {
-       rcls, dbs := setupEnv(
+       setupVals := setupEnv(
+               true,
                "service-ricplt-dbaas-tcp-cluster-0.ricplt", "6376", "", "",
-               "service-ricplt-dbaas-tcp-cluster-0.ricplt,service-ricplt-dbaas-tcp-cluster-1.ricplt",
+               "service-ricplt-dbaas-tcp-cluster-0.ricplt,service-ricplt-dbaas-tcp-cluster-1.ricplt", "",
        )
-       assert.Equal(t, 2, len(rcls))
-       assert.Equal(t, 2, len(dbs))
+       assert.Equal(t, 2, len(setupVals.rClient))
+       assert.Equal(t, 2, len(setupVals.db))
 
        expectedKeysAndValues := []interface{}{"key1", "value1"}
-       rcls[0].On("MSet", expectedKeysAndValues).Return(redis.NewStatusResult("OK", nil))
-       err := dbs[0].MSet("key1", "value1")
+       setupVals.rClient[0].On("MSet", expectedKeysAndValues).Return(redis.NewStatusResult("OK", nil))
+       err := setupVals.db[0].MSet("key1", "value1")
        assert.Nil(t, err)
-       rcls[0].AssertExpectations(t)
+       setupVals.rClient[0].AssertExpectations(t)
 
        expectedKeysAndValues = []interface{}{"key2", "value2"}
-       rcls[1].On("MSet", expectedKeysAndValues).Return(redis.NewStatusResult("OK", nil))
-       err = dbs[1].MSet("key2", "value2")
+       setupVals.rClient[1].On("MSet", expectedKeysAndValues).Return(redis.NewStatusResult("OK", nil))
+       err = setupVals.db[1].MSet("key2", "value2")
        assert.Nil(t, err)
-       rcls[0].AssertExpectations(t)
-       rcls[1].AssertExpectations(t)
+       setupVals.rClient[0].AssertExpectations(t)
+       setupVals.rClient[1].AssertExpectations(t)
 }
 
 func TestClientTwoSentinelRedisEnvs(t *testing.T) {
-       rcls, dbs := setupEnv(
+       setupVals := setupEnv(
+               true,
                "service-ricplt-dbaas-tcp-cluster-0.ricplt", "6376", "dbaasmaster", "26376",
-               "service-ricplt-dbaas-tcp-cluster-0.ricplt,service-ricplt-dbaas-tcp-cluster-1.ricplt",
+               "service-ricplt-dbaas-tcp-cluster-0.ricplt,service-ricplt-dbaas-tcp-cluster-1.ricplt", "3",
        )
-       assert.Equal(t, 2, len(rcls))
-       assert.Equal(t, 2, len(dbs))
+       assert.Equal(t, 2, len(setupVals.rClient))
+       assert.Equal(t, 2, len(setupVals.db))
 
        expectedKeysAndValues := []interface{}{"key1", "value1"}
-       rcls[0].On("MSet", expectedKeysAndValues).Return(redis.NewStatusResult("OK", nil))
-       err := dbs[0].MSet("key1", "value1")
+       setupVals.rClient[0].On("MSet", expectedKeysAndValues).Return(redis.NewStatusResult("OK", nil))
+       err := setupVals.db[0].MSet("key1", "value1")
        assert.Nil(t, err)
-       rcls[0].AssertExpectations(t)
+       setupVals.rClient[0].AssertExpectations(t)
 
        expectedKeysAndValues = []interface{}{"key2", "value2"}
-       rcls[1].On("MSet", expectedKeysAndValues).Return(redis.NewStatusResult("OK", nil))
-       err = dbs[1].MSet("key2", "value2")
+       setupVals.rClient[1].On("MSet", expectedKeysAndValues).Return(redis.NewStatusResult("OK", nil))
+       err = setupVals.db[1].MSet("key2", "value2")
+       assert.Nil(t, err)
+       setupVals.rClient[0].AssertExpectations(t)
+       setupVals.rClient[1].AssertExpectations(t)
+}
+
+func TestInfoOfMasterRedisWithTwoSlavesSuccessfully(t *testing.T) {
+       _, r, db := setupHaEnv(true)
+       redisInfo := "# Replication\r\n" +
+               "role:master\r\n" +
+               "connected_slaves:2\r\n" +
+               "min_slaves_good_slaves:2\r\n" +
+               "slave0:ip=1.2.3.4,port=6379,state=online,offset=100200300,lag=0\r\n" +
+               "slave1:ip=5.6.7.8,port=6379,state=online,offset=100200300,lag=0\r\n"
+       expInfo := &sdlgoredis.DbInfo{
+               Fields: sdlgoredis.DbInfoFields{
+                       MasterRole:          true,
+                       ConnectedReplicaCnt: 2,
+               },
+       }
+
+       r.On("Info", []string{"all"}).Return(redis.NewStringResult(redisInfo, nil))
+       info, err := db.Info()
+       assert.Nil(t, err)
+       assert.Equal(t, expInfo, info)
+       r.AssertExpectations(t)
+}
+
+func TestInfoOfMasterRedisWithOneSlaveOnlineAndOtherSlaveNotOnlineSuccessfully(t *testing.T) {
+       _, r, db := setupHaEnv(true)
+       redisInfo := "# Replication\r\n" +
+               "role:master\r\n" +
+               "connected_slaves:1\r\n" +
+               "min_slaves_good_slaves:2\r\n" +
+               "slave0:ip=1.2.3.4,port=6379,state=online,offset=100200300,lag=0\r\n" +
+               "slave1:ip=5.6.7.8,port=6379,state=wait_bgsave,offset=100200300,lag=0\r\n"
+       expInfo := &sdlgoredis.DbInfo{
+               Fields: sdlgoredis.DbInfoFields{
+                       MasterRole:          true,
+                       ConnectedReplicaCnt: 1,
+               },
+       }
+
+       r.On("Info", []string{"all"}).Return(redis.NewStringResult(redisInfo, nil))
+       info, err := db.Info()
+       assert.Nil(t, err)
+       assert.Equal(t, expInfo, info)
+       r.AssertExpectations(t)
+}
+
+func TestInfoOfStandaloneMasterRedisSuccessfully(t *testing.T) {
+       _, r, db := setupHaEnv(true)
+       redisInfo := "# Replication\r\n" +
+               "role:master\r\n" +
+               "connected_slaves:0\r\n" +
+               "min_slaves_good_slaves:0\r\n"
+       expInfo := &sdlgoredis.DbInfo{
+               Fields: sdlgoredis.DbInfoFields{
+                       MasterRole:          true,
+                       ConnectedReplicaCnt: 0,
+               },
+       }
+
+       r.On("Info", []string{"all"}).Return(redis.NewStringResult(redisInfo, nil))
+       info, err := db.Info()
+       assert.Nil(t, err)
+       assert.Equal(t, expInfo, info)
+       r.AssertExpectations(t)
+}
+
+func TestInfoWithGibberishContentSuccessfully(t *testing.T) {
+       _, r, db := setupHaEnv(true)
+       redisInfo := "!#¤%&?+?´-\r\n"
+       expInfo := &sdlgoredis.DbInfo{}
+
+       r.On("Info", []string{"all"}).Return(redis.NewStringResult(redisInfo, nil))
+       info, err := db.Info()
+       assert.Nil(t, err)
+       assert.Equal(t, expInfo, info)
+       r.AssertExpectations(t)
+}
+
+func TestInfoWithEmptyContentSuccessfully(t *testing.T) {
+       _, r, db := setupHaEnv(true)
+       var redisInfo string
+       expInfo := &sdlgoredis.DbInfo{
+               Fields: sdlgoredis.DbInfoFields{
+                       MasterRole: false,
+               },
+       }
+
+       r.On("Info", []string{"all"}).Return(redis.NewStringResult(redisInfo, nil))
+       info, err := db.Info()
+       assert.Nil(t, err)
+       assert.Equal(t, expInfo, info)
+       r.AssertExpectations(t)
+}
+
+func TestStateWithMasterAndTwoSlaveRedisSuccessfully(t *testing.T) {
+       _, r, s, db := setupHaEnvWithSentinels(true)
+       redisMasterState := map[string]string{
+               "role-reported": "master",
+       }
+       redisSlavesState := make([]interface{}, 2)
+       redisSlavesState[0] = []interface{}{
+               "role-reported", "slave",
+               "ip", "10.20.30.40",
+               "port", "6379",
+               "flags", "slave",
+               "master-link-status", "up",
+       }
+       redisSlavesState[1] = []interface{}{
+               "master-link-status", "up",
+               "ip", "10.20.30.50",
+               "flags", "slave",
+               "port", "30000",
+               "role-reported", "slave",
+       }
+
+       expState := &sdlgoredis.DbState{
+               MasterDbState: sdlgoredis.MasterDbState{
+                       Fields: sdlgoredis.MasterDbStateFields{
+                               Role: "master",
+                       },
+               },
+               ReplicasDbState: &sdlgoredis.ReplicasDbState{
+                       States: []*sdlgoredis.ReplicaDbState{
+                               &sdlgoredis.ReplicaDbState{
+                                       Fields: sdlgoredis.ReplicaDbStateFields{
+                                               Role:             "slave",
+                                               Ip:               "10.20.30.40",
+                                               Port:             "6379",
+                                               MasterLinkStatus: "up",
+                                               Flags:            "slave",
+                                       },
+                               },
+                               &sdlgoredis.ReplicaDbState{
+                                       Fields: sdlgoredis.ReplicaDbStateFields{
+                                               Role:             "slave",
+                                               Ip:               "10.20.30.50",
+                                               Port:             "30000",
+                                               MasterLinkStatus: "up",
+                                               Flags:            "slave",
+                                       },
+                               },
+                       },
+               },
+       }
+
+       s[0].On("Master", "dbaasmaster").Return(redis.NewStringStringMapResult(redisMasterState, nil))
+       s[0].On("Slaves", "dbaasmaster").Return(redis.NewSliceResult(redisSlavesState, nil))
+       ret, err := db.State()
+       assert.Nil(t, err)
+       assert.Equal(t, expState, ret)
+       r.AssertExpectations(t)
+}
+
+func TestStateWithMasterAndOneSlaveRedisFailureInMasterRedisCall(t *testing.T) {
+       _, r, s, db := setupHaEnvWithSentinels(true)
+       redisMasterState := map[string]string{}
+       redisSlavesState := make([]interface{}, 1)
+       redisSlavesState[0] = []interface{}{
+               "role-reported", "slave",
+               "ip", "10.20.30.40",
+               "port", "6379",
+               "flags", "slave",
+               "master-link-status", "up",
+       }
+
+       expState := &sdlgoredis.DbState{
+               MasterDbState: sdlgoredis.MasterDbState{
+                       Err: errors.New("Some error"),
+               },
+               ReplicasDbState: &sdlgoredis.ReplicasDbState{
+                       States: []*sdlgoredis.ReplicaDbState{
+                               &sdlgoredis.ReplicaDbState{
+                                       Fields: sdlgoredis.ReplicaDbStateFields{
+                                               Role:             "slave",
+                                               Ip:               "10.20.30.40",
+                                               Port:             "6379",
+                                               MasterLinkStatus: "up",
+                                               Flags:            "slave",
+                                       },
+                               },
+                       },
+               },
+       }
+
+       s[0].On("Master", "dbaasmaster").Return(redis.NewStringStringMapResult(redisMasterState, errors.New("Some error")))
+       s[0].On("Slaves", "dbaasmaster").Return(redis.NewSliceResult(redisSlavesState, nil))
+       ret, err := db.State()
+       assert.NotNil(t, err)
+       assert.Equal(t, expState, ret)
+       r.AssertExpectations(t)
+}
+
+func TestStateWithMasterAndOneSlaveRedisFailureInSlavesRedisCall(t *testing.T) {
+       _, r, s, db := setupHaEnvWithSentinels(true)
+       redisMasterState := map[string]string{
+               "role-reported": "master",
+       }
+       redisSlavesState := make([]interface{}, 1)
+       redisSlavesState[0] = []interface{}{}
+
+       expState := &sdlgoredis.DbState{
+               MasterDbState: sdlgoredis.MasterDbState{
+                       Fields: sdlgoredis.MasterDbStateFields{
+                               Role: "master",
+                       },
+               },
+               ReplicasDbState: &sdlgoredis.ReplicasDbState{
+                       Err:    errors.New("Some error"),
+                       States: []*sdlgoredis.ReplicaDbState{},
+               },
+       }
+
+       s[0].On("Master", "dbaasmaster").Return(redis.NewStringStringMapResult(redisMasterState, nil))
+       s[0].On("Slaves", "dbaasmaster").Return(redis.NewSliceResult(redisSlavesState, errors.New("Some error")))
+       ret, err := db.State()
+       assert.NotNil(t, err)
+       assert.Equal(t, expState, ret)
+       r.AssertExpectations(t)
+}
+
+func TestStateWithSingleMasterRedisSuccessfully(t *testing.T) {
+       _, r, db := setupSingleEnv(true)
+       redisInfo := "# Replication\r\n" +
+               "role:master\r\n" +
+               "connected_slaves:0\r\n" +
+               "min_slaves_good_slaves:0\r\n"
+
+       expState := &sdlgoredis.DbState{
+               MasterDbState: sdlgoredis.MasterDbState{
+                       Fields: sdlgoredis.MasterDbStateFields{
+                               Role:  "master",
+                               Flags: "master",
+                       },
+               },
+       }
+
+       r.On("Info", []string{"all"}).Return(redis.NewStringResult(redisInfo, nil))
+       ret, err := db.State()
        assert.Nil(t, err)
-       rcls[0].AssertExpectations(t)
-       rcls[1].AssertExpectations(t)
+       assert.Equal(t, expState, ret)
+       r.AssertExpectations(t)
+}
+
+func TestStateWithSingleMasterRedisFailureInInfoCall(t *testing.T) {
+       _, r, db := setupSingleEnv(true)
+       redisInfo := ""
+       expState := &sdlgoredis.DbState{}
+
+       r.On("Info", []string{"all"}).Return(redis.NewStringResult(redisInfo, errors.New("Some error")))
+       ret, err := db.State()
+       assert.NotNil(t, err)
+       assert.Equal(t, expState, ret)
+       r.AssertExpectations(t)
 }