diff --git a/.gitignore b/.gitignore
index 2e1af13..37ea85c 100644
--- a/.gitignore
+++ b/.gitignore
@@ -2,4 +2,5 @@ vendor
 *.swp
 hosts
 .idea
-.venv
\ No newline at end of file
+.venv
+coverage.out
\ No newline at end of file
diff --git a/cmd/go-mtg-vk/main.go b/cmd/go-mtg-vk/main.go
index 690413e..519cf91 100644
--- a/cmd/go-mtg-vk/main.go
+++ b/cmd/go-mtg-vk/main.go
@@ -20,14 +20,14 @@ func main() {
 	groupId, _ := strconv.ParseInt(os.Getenv("VK_GROUP_ID"), 10, 64)
 	handler := vk.Handler{
 		Sender: &vk.ApiSender{
-			Token:              os.Getenv("VK_TOKEN"),
+			Token: os.Getenv("VK_TOKEN"),
 		},
-		Logger: log.New(os.Stdout, "", 0),
+		Logger:             log.New(os.Stdout, "", 0),
 		SecretKey:          os.Getenv("VK_SECRET_KEY"),
 		GroupId:            groupId,
 		ConfirmationString: os.Getenv("VK_CONFIRMATION_STRING"),
-		DictPath: "./assets/additional_cards.json",
-		CachingClient: caching.GetClient(),
+		DictPath:           "./assets/additional_cards.json",
+		Cache:              caching.GetClient(),
 	}
 
 	r.POST("callback/message", handler.HandleMessage)
diff --git a/go.sum b/go.sum
index 9676ca6..d5b0d6b 100644
--- a/go.sum
+++ b/go.sum
@@ -61,6 +61,7 @@ github.com/ugorji/go v1.1.4/go.mod h1:uQMGLiO92mf5W77hV/PUCpI3pbzQx3CRekS0kk+RGr
 github.com/yuin/gopher-lua v0.0.0-20191220021717-ab39c6098bdb/go.mod h1:gqRgreBUhTSL0GeU64rtZ3Uq3wtjOa/TB2YfrtkCbVQ=
 github.com/yuin/gopher-lua v0.0.0-20200816102855-ee81675732da h1:NimzV1aGyq29m5ukMK0AMWEhFaL/lrEOaephfuoiARg=
 github.com/yuin/gopher-lua v0.0.0-20200816102855-ee81675732da/go.mod h1:E1AXubJBdNmFERAOucpDIxNzeGfLzg0mYh+UfMWdChA=
+golang.org/x/crypto v0.0.0-20190308221718-c2843e01d9a2 h1:VklqNMn3ovrHsnt90PveolxSbWFaJdECFbxSq0Mqo2M=
 golang.org/x/crypto v0.0.0-20190308221718-c2843e01d9a2/go.mod h1:djNgcEr1/C05ACkg1iLfiJU5Ep61QUkGW8qpdssI0+w=
 golang.org/x/net v0.0.0-20180906233101-161cd47e91fd/go.mod h1:mL1N/T3taQHkDXs73rZJwtUhF3w3ftmwwsq0BUmARs4=
 golang.org/x/net v0.0.0-20190503192946-f4e77d36d62c h1:uOCk1iQW6Vc18bnC13MfzScl+wdKBmM9Y9kU7Z83/lw=
diff --git a/internal/cardsinfo/price_format_test.go b/internal/cardsinfo/price_format_test.go
deleted file mode 100644
index 2b50477..0000000
--- a/internal/cardsinfo/price_format_test.go
+++ /dev/null
@@ -1,26 +0,0 @@
-package cardsinfo
-
-import (
-	"github.com/stretchr/testify/assert"
-	"testing"
-)
-
-func TestFormat(t *testing.T) {
-	data := []CardPrice{
-		&TcgCardPrice{
-			Name:      "Green lotus",
-			PriceFoil: "22.8",
-			Link:      "scg.com/1",
-			Edition:   "alpha",
-		},
-		&TcgCardPrice{
-			Name:    "White lotus",
-			Price:   "3.22",
-			Link:    "scg.com/2",
-			Edition: "gamma",
-		},
-	}
-	res := FormatCardPrices("Black Lotus", data)
-	ans := "Оригинальное название: Black Lotus\nРезультатов: 2\n1. alpha\nRegular: -\nFoil: $22.8\nscg.com/1\n2. gamma\nRegular: $3.22\nFoil: -\nscg.com/2\n"
-	assert.Equal(t, ans, res)
-}
diff --git a/internal/cardsinfo/structs.go b/internal/cardsinfo/structs.go
index 7d5000a..b6b2f80 100644
--- a/internal/cardsinfo/structs.go
+++ b/internal/cardsinfo/structs.go
@@ -9,26 +9,6 @@ type CardPrice interface {
 	Format() string
 }
 
-type TcgCardPrice struct {
-	FullArt   bool
-	Name      string
-	Price     string
-	PriceFoil string
-	Link      string
-	Edition   string
-}
-
-func (t *TcgCardPrice) Format() string {
-	return fmt.Sprintf("%v\nRegular: %v\nFoil: %v\n%v\n", t.Edition, formatTcgPrice(t.Price), formatTcgPrice(t.PriceFoil), t.Link)
-}
-
-func formatTcgPrice(price string) string {
-	if price == "" {
-		return "-"
-	}
-	return fmt.Sprintf("$%v", price)
-}
-
 type ScgCardPrice struct {
 	Price   string
 	Edition string
diff --git a/internal/vk/handler.go b/internal/vk/handler.go
index 0442f73..60fa484 100644
--- a/internal/vk/handler.go
+++ b/internal/vk/handler.go
@@ -2,16 +2,28 @@ package vk
 
 import (
 	"errors"
+	"io"
 	"log"
 	"net/http"
 	"os"
 	"strings"
 
 	"github.com/gin-gonic/gin"
-	"gitlab.com/flygrounder/go-mtg-vk/internal/caching"
 	"gitlab.com/flygrounder/go-mtg-vk/internal/cardsinfo"
 )
 
+type CardInfoFetcher interface {
+	GetPrices(name string) ([]cardsinfo.CardPrice, error)
+	FormatCardPrices(name string, prices []cardsinfo.CardPrice) string
+	GetNameByCardId(set string, number string) string
+	GetOriginalName(name string, dict io.Reader) string
+}
+
+type CardCache interface {
+	Get(cardName string) (string, error)
+	Set(cardName string, message string)
+}
+
 type Handler struct {
 	Sender             Sender
 	Logger             *log.Logger
@@ -19,7 +31,8 @@ type Handler struct {
 	GroupId            int64
 	ConfirmationString string
 	DictPath           string
-	CachingClient      *caching.CacheClient
+	Cache              CardCache
+	InfoFetcher        CardInfoFetcher
 }
 
 type messageRequest struct {
@@ -34,6 +47,12 @@ type userMessage struct {
 	UserId int64  `json:"peer_id"`
 }
 
+const (
+	incorrectMessage         = "Некорректная команда"
+	cardNotFoundMessage      = "Карта не найдена"
+	pricesUnavailableMessage = "Цены временно недоступны, попробуйте позже"
+)
+
 func (h *Handler) HandleMessage(c *gin.Context) {
 	var req messageRequest
 	_ = c.BindJSON(&req)
@@ -50,23 +69,17 @@ func (h *Handler) HandleMessage(c *gin.Context) {
 }
 
 func (h *Handler) handleSearch(req *messageRequest) {
-	defer func() {
-		if r := recover(); r != nil {
-			h.Logger.Printf("[error] Search panicked. Exception info: %s", r)
-		}
-	}()
-
 	cardName, err := h.getCardNameByCommand(req.Object.Body)
 	if err != nil {
-		h.Sender.Send(req.Object.UserId, "Некорректная команда")
+		h.Sender.Send(req.Object.UserId, incorrectMessage)
 		h.Logger.Printf("[info] Not correct command. Message: %s user input: %s", err.Error(), req.Object.Body)
 	} else if cardName == "" {
-		h.Sender.Send(req.Object.UserId, "Карта не найдена")
+		h.Sender.Send(req.Object.UserId, cardNotFoundMessage)
 		h.Logger.Printf("[info] Could not find card. User input: %s", req.Object.Body)
 	} else {
 		message, err := h.getMessage(cardName)
 		if err != nil {
-			h.Sender.Send(req.Object.UserId, "Цены временно недоступны, попробуйте позже")
+			h.Sender.Send(req.Object.UserId, pricesUnavailableMessage)
 			h.Logger.Printf("[error] Could not find SCG prices. Message: %s card name: %s", err.Error(), cardName)
 			return
 		}
@@ -81,14 +94,14 @@ func (h *Handler) handleConfirmation(c *gin.Context, req *messageRequest) {
 }
 
 func (h *Handler) getMessage(cardName string) (string, error) {
-	val, err := h.CachingClient.Get(cardName)
+	val, err := h.Cache.Get(cardName)
 	if err != nil {
-		prices, err := cardsinfo.GetPrices(cardName)
+		prices, err := h.InfoFetcher.GetPrices(cardName)
 		if err != nil {
 			return "", err
 		}
-		message := cardsinfo.FormatCardPrices(cardName, prices)
-		h.CachingClient.Set(cardName, message)
+		message := h.InfoFetcher.FormatCardPrices(cardName, prices)
+		h.Cache.Set(cardName, message)
 		return message, nil
 	}
 	return val, nil
@@ -104,10 +117,10 @@ func (h *Handler) getCardNameByCommand(command string) (string, error) {
 		}
 		set := split[1]
 		number := split[2]
-		name = cardsinfo.GetNameByCardId(set, number)
+		name = h.InfoFetcher.GetNameByCardId(set, number)
 	default:
 		dict, _ := os.Open(h.DictPath)
-		name = cardsinfo.GetOriginalName(command, dict)
+		name = h.InfoFetcher.GetOriginalName(command, dict)
 	}
 	return name, nil
 }
diff --git a/internal/vk/handler_test.go b/internal/vk/handler_test.go
new file mode 100644
index 0000000..6400883
--- /dev/null
+++ b/internal/vk/handler_test.go
@@ -0,0 +1,222 @@
+package vk
+
+import (
+	"bytes"
+	"encoding/json"
+	"errors"
+	"github.com/gin-gonic/gin"
+	"github.com/stretchr/testify/assert"
+	"gitlab.com/flygrounder/go-mtg-vk/internal/cardsinfo"
+	"io"
+	"log"
+	"net/http/httptest"
+	"strings"
+	"testing"
+)
+
+func getTestRequestCtx(msgReq *messageRequest, recorder *httptest.ResponseRecorder) *gin.Context {
+	ctx, _ := gin.CreateTestContext(recorder)
+	body, _ := json.Marshal(msgReq)
+	ctx.Request = httptest.NewRequest("POST", "/", bytes.NewReader(body))
+	return ctx
+}
+
+type testCtx struct {
+	handler  *Handler
+	recorder *httptest.ResponseRecorder
+	sender   *testSender
+	logBuf   *bytes.Buffer
+}
+
+type testMessage struct {
+	userId  int64
+	message string
+}
+
+type testSender struct {
+	sent []testMessage
+}
+
+func (s *testSender) Send(userId int64, message string) {
+	s.sent = append(s.sent, testMessage{
+		userId:  userId,
+		message: message,
+	})
+}
+
+type testCache struct {
+	table map[string]string
+}
+
+func (t *testCache) Get(cardName string) (string, error) {
+	msg, ok := t.table[cardName]
+	if !ok {
+		return "", errors.New("test")
+	}
+	return msg, nil
+}
+
+func (t *testCache) Set(cardName string, message string) {
+	t.table[cardName] = message
+}
+
+func getTestHandlerCtx() testCtx {
+	sender := &testSender{}
+	buf := &bytes.Buffer{}
+	return testCtx{
+		logBuf: buf,
+		handler: &Handler{
+			SecretKey:          "sec",
+			GroupId:            10,
+			ConfirmationString: "con",
+			Sender:             sender,
+			Logger:             log.New(buf, "", 0),
+			InfoFetcher:        &testInfoFetcher{},
+			Cache: &testCache{
+				table: map[string]string{
+					"good": "good",
+				},
+			},
+		},
+		sender:   sender,
+		recorder: httptest.NewRecorder(),
+	}
+}
+
+type testInfoFetcher struct{}
+
+func (t *testInfoFetcher) GetPrices(name string) ([]cardsinfo.CardPrice, error) {
+	if name == "good" || name == "uncached" {
+		return nil, nil
+	}
+	return nil, errors.New("test")
+}
+
+func (t *testInfoFetcher) FormatCardPrices(name string, _ []cardsinfo.CardPrice) string {
+	return name
+}
+
+func (t *testInfoFetcher) GetNameByCardId(_ string, _ string) string {
+	return "good"
+}
+
+func (t *testInfoFetcher) GetOriginalName(name string, _ io.Reader) string {
+	if name == "good" || name == "bad" || name == "uncached" {
+		return name
+	}
+	return ""
+}
+
+func TestHandler_HandleMessage_Confirm(t *testing.T) {
+	testCtx := getTestHandlerCtx()
+	ctx := getTestRequestCtx(&messageRequest{
+		Type:    "confirmation",
+		GroupId: testCtx.handler.GroupId,
+		Secret:  testCtx.handler.SecretKey,
+	}, testCtx.recorder)
+	testCtx.handler.HandleMessage(ctx)
+	assert.Equal(t, testCtx.handler.ConfirmationString, testCtx.recorder.Body.String())
+}
+
+func TestHandler_HandleMessage_Message(t *testing.T) {
+	testCtx := getTestHandlerCtx()
+	ctx := getTestRequestCtx(&messageRequest{
+		Type:   "message_new",
+		Secret: testCtx.handler.SecretKey,
+	}, testCtx.recorder)
+	testCtx.handler.HandleMessage(ctx)
+	assert.Equal(t, "ok", testCtx.recorder.Body.String())
+}
+
+func TestHandler_HandleMessage_NoSecretKey(t *testing.T) {
+	testCtx := getTestHandlerCtx()
+	ctx := getTestRequestCtx(&messageRequest{
+		Type: "message_new",
+	}, testCtx.recorder)
+	testCtx.handler.HandleMessage(ctx)
+	assert.Equal(t, "", testCtx.recorder.Body.String())
+}
+
+func TestHandler_handleSearch_BadCommand(t *testing.T) {
+	testCtx := getTestHandlerCtx()
+	testCtx.handler.handleSearch(&messageRequest{
+		Object: userMessage{
+			Body:   "!s",
+			UserId: 1,
+		},
+	})
+	assert.Equal(t, []testMessage{
+		{
+			userId:  1,
+			message: incorrectMessage,
+		},
+	}, testCtx.sender.sent)
+	assert.True(t, strings.Contains(testCtx.logBuf.String(), "[info]"))
+}
+
+func TestHandler_handleSearch_GoodCommand(t *testing.T) {
+	testCtx := getTestHandlerCtx()
+	testCtx.handler.handleSearch(&messageRequest{
+		Object: userMessage{
+			Body:   "!s grn 228",
+			UserId: 1,
+		},
+	})
+	assert.Equal(t, []testMessage{
+		{
+			userId:  1,
+			message: "good",
+		},
+	}, testCtx.sender.sent)
+}
+
+func TestHandler_handleSearch_NotFoundCard(t *testing.T) {
+	testCtx := getTestHandlerCtx()
+	testCtx.handler.handleSearch(&messageRequest{
+		Object: userMessage{
+			Body:   "absolutely_random_card",
+			UserId: 1,
+		},
+	})
+	assert.Equal(t, []testMessage{
+		{
+			userId:  1,
+			message: cardNotFoundMessage,
+		},
+	}, testCtx.sender.sent)
+	assert.True(t, strings.Contains(testCtx.logBuf.String(), "[info]"))
+}
+
+func TestHandler_handleSearch_BadCard(t *testing.T) {
+	testCtx := getTestHandlerCtx()
+	testCtx.handler.handleSearch(&messageRequest{
+		Object: userMessage{
+			Body:   "bad",
+			UserId: 1,
+		},
+	})
+	assert.Equal(t, []testMessage{
+		{
+			userId:  1,
+			message: pricesUnavailableMessage,
+		},
+	}, testCtx.sender.sent)
+	assert.True(t, strings.Contains(testCtx.logBuf.String(), "[error]"))
+}
+func TestHandler_handleSearch_Uncached(t *testing.T) {
+	testCtx := getTestHandlerCtx()
+	testCtx.handler.handleSearch(&messageRequest{
+		Object: userMessage{
+			Body:   "uncached",
+			UserId: 1,
+		},
+	})
+	assert.Equal(t, []testMessage{
+		{
+			userId:  1,
+			message: "uncached",
+		},
+	}, testCtx.sender.sent)
+	msg, _ := testCtx.handler.Cache.Get("uncached")
+	assert.Equal(t, "uncached", msg)
+}