diff --git a/exchange/bidder_test.go b/exchange/bidder_test.go
index de11e8e4d9d..509a8452290 100644
--- a/exchange/bidder_test.go
+++ b/exchange/bidder_test.go
@@ -7,7 +7,6 @@ import (
 	"fmt"
 	"net/http"
 	"net/http/httptest"
-	"strings"
 	"testing"
 	"time"
 
@@ -254,8 +253,8 @@ func TestMultiCurrencies(t *testing.T) {
 		rates                     currencies.Rates
 		expectedBids              []bid
 		expectedBadCurrencyErrors []error
+		description               string
 	}{
-		// Bidder respond with the same currency (default one) on all HTTP responses
 		{
 			bids: []bid{
 				{currency: "USD", price: 1.1},
@@ -279,8 +278,8 @@ func TestMultiCurrencies(t *testing.T) {
 				{currency: "USD", price: 1.3},
 			},
 			expectedBadCurrencyErrors: []error{},
+			description:               "Case 1 - Bidder respond with the same currency (default one) on all HTTP responses",
 		},
-		// Bidder respond with no currency on all HTTP responses
 		{
 			bids: []bid{
 				{currency: "", price: 1.1},
@@ -304,8 +303,8 @@ func TestMultiCurrencies(t *testing.T) {
 				{currency: "USD", price: 1.3},
 			},
 			expectedBadCurrencyErrors: []error{},
+			description:               "Case 2 - Bidder respond with no currency on all HTTP responses",
 		},
-		// Bidder respond with the same non default currency on all HTTP responses
 		{
 			bids: []bid{
 				{currency: "EUR", price: 1.1},
@@ -329,8 +328,8 @@ func TestMultiCurrencies(t *testing.T) {
 				{currency: "USD", price: 1.3 * 1.1435678764},
 			},
 			expectedBadCurrencyErrors: []error{},
+			description:               "Case 3 - Bidder respond with the same non default currency on all HTTP responses",
 		},
-		// Bidder respond with a mix of currencies on all HTTP responses
 		{
 			bids: []bid{
 				{currency: "USD", price: 1.1},
@@ -354,8 +353,8 @@ func TestMultiCurrencies(t *testing.T) {
 				{currency: "USD", price: 1.3 * 1.3050530256},
 			},
 			expectedBadCurrencyErrors: []error{},
+			description:               "Case 4 - Bidder respond with a mix of currencies on all HTTP responses",
 		},
-		// Bidder respond with a mix of currencies and no currency on all HTTP responses
 		{
 			bids: []bid{
 				{currency: "", price: 1.1},
@@ -379,8 +378,8 @@ func TestMultiCurrencies(t *testing.T) {
 				{currency: "USD", price: 1.3 * 1.3050530256},
 			},
 			expectedBadCurrencyErrors: []error{},
+			description:               "Case 5 - Bidder respond with a mix of currencies and no currency on all HTTP responses",
 		},
-		// Bidder respond with a mix of currencies and one unknown on all HTTP responses
 		{
 			bids: []bid{
 				{currency: "JPY", price: 1.1},
@@ -405,8 +404,8 @@ func TestMultiCurrencies(t *testing.T) {
 			expectedBadCurrencyErrors: []error{
 				errors.New("Currency conversion rate not found: 'JPY' => 'USD'"),
 			},
+			description: "Case 6 - Bidder respond with a mix of currencies and one unknown on all HTTP responses",
 		},
-		// Bidder respond with currencies not having any rate on all HTTP responses
 		{
 			bids: []bid{
 				{currency: "JPY", price: 1.1},
@@ -430,8 +429,8 @@ func TestMultiCurrencies(t *testing.T) {
 				errors.New("Currency conversion rate not found: 'BZD' => 'USD'"),
 				errors.New("Currency conversion rate not found: 'DKK' => 'USD'"),
 			},
+			description: "Case 7 - Bidder respond with currencies not having any rate on all HTTP responses",
 		},
-		// Bidder respond with not existing currencies
 		{
 			bids: []bid{
 				{currency: "AAA", price: 1.1},
@@ -455,6 +454,7 @@ func TestMultiCurrencies(t *testing.T) {
 				errors.New("currency: tag is not a recognized currency"),
 				errors.New("currency: tag is not a recognized currency"),
 			},
+			description: "Case 8 - Bidder respond with not existing currencies",
 		},
 	}
 
@@ -525,8 +525,8 @@ func TestMultiCurrencies(t *testing.T) {
 				currency: seatBid.currency,
 			}
 		}
-		assert.ElementsMatch(t, tc.expectedBids, resultLightBids, fmt.Sprintf("Case: %v", tc.bids))
-		assert.ElementsMatch(t, tc.expectedBadCurrencyErrors, errs, fmt.Sprintf("Case: %v", tc.bids))
+		assert.ElementsMatch(t, tc.expectedBids, resultLightBids, tc.description)
+		assert.ElementsMatch(t, tc.expectedBadCurrencyErrors, errs, tc.description)
 	}
 }
 
@@ -541,14 +541,14 @@ func TestMultiCurrencies_RateConverterNotSet(t *testing.T) {
 		bidCurrency               []string
 		expectedBidsCount         uint
 		expectedBadCurrencyErrors []error
+		description               string
 	}{
-		// Bidder respond with the same currency (default one) on all HTTP responses
 		{
 			bidCurrency:               []string{"USD", "USD", "USD"},
 			expectedBidsCount:         3,
 			expectedBadCurrencyErrors: []error{},
+			description:               "Case 1 - Bidder respond with the same currency (default one) on all HTTP responses",
 		},
-		// Bidder respond with the same currency (not default one) on all HTTP responses
 		{
 			bidCurrency:       []string{"EUR", "EUR", "EUR"},
 			expectedBidsCount: 0,
@@ -557,54 +557,55 @@ func TestMultiCurrencies_RateConverterNotSet(t *testing.T) {
 				fmt.Errorf("Constant rates doesn't proceed to any conversions, cannot convert 'EUR' => 'USD'"),
 				fmt.Errorf("Constant rates doesn't proceed to any conversions, cannot convert 'EUR' => 'USD'"),
 			},
+			description: "Case 2 - Bidder respond with the same currency (not default one) on all HTTP responses",
 		},
-		// Bidder responds with currency not set on all HTTP responses
 		{
 			bidCurrency:               []string{"", "", ""},
 			expectedBidsCount:         3,
 			expectedBadCurrencyErrors: []error{},
+			description:               "Case 3 - Bidder responds with currency not set on all HTTP responses",
 		},
-		// Bidder responds with a mix of not set and default currency in HTTP responses
 		{
 			bidCurrency:               []string{"", "USD", ""},
 			expectedBidsCount:         3,
 			expectedBadCurrencyErrors: []error{},
+			description:               "Case 4 - Bidder responds with a mix of not set and default currency in HTTP responses",
 		},
-		// Bidder responds with a mix of not set and default currency in HTTP responses
 		{
 			bidCurrency:               []string{"USD", "USD", ""},
 			expectedBidsCount:         3,
 			expectedBadCurrencyErrors: []error{},
+			description:               "Case 5 - Bidder responds with a mix of not set and default currency in HTTP responses",
 		},
-		// Bidder responds with a mix of not set and default currency in HTTP responses
 		{
 			bidCurrency:               []string{"", "", "USD"},
 			expectedBidsCount:         3,
 			expectedBadCurrencyErrors: []error{},
+			description:               "Case 6 - Bidder responds with a mix of not set and default currency in HTTP responses",
 		},
-		// Bidder responds with a mix of not set, non default currency and default currency in HTTP responses
 		{
 			bidCurrency:       []string{"EUR", "", "USD"},
 			expectedBidsCount: 2,
 			expectedBadCurrencyErrors: []error{
 				fmt.Errorf("Constant rates doesn't proceed to any conversions, cannot convert 'EUR' => 'USD'"),
 			},
+			description: "Case 7 - Bidder responds with a mix of not set, non default currency and default currency in HTTP responses",
 		},
-		// Bidder responds with a mix of not set, non default currency and default currency in HTTP responses
 		{
 			bidCurrency:       []string{"GBP", "", "USD"},
 			expectedBidsCount: 2,
 			expectedBadCurrencyErrors: []error{
 				fmt.Errorf("Constant rates doesn't proceed to any conversions, cannot convert 'GBP' => 'USD'"),
 			},
+			description: "Case 8 - Bidder responds with a mix of not set, non default currency and default currency in HTTP responses",
 		},
-		// Bidder responds with a mix of not set and empty currencies (default currency) in HTTP responses
 		{
 			bidCurrency:       []string{"GBP", "", ""},
 			expectedBidsCount: 2,
 			expectedBadCurrencyErrors: []error{
 				fmt.Errorf("Constant rates doesn't proceed to any conversions, cannot convert 'GBP' => 'USD'"),
 			},
+			description: "Case 9 - Bidder responds with a mix of not set and empty currencies (default currency) in HTTP responses",
 		},
 		// Bidder respond with not existing currencies
 		{
@@ -615,6 +616,7 @@ func TestMultiCurrencies_RateConverterNotSet(t *testing.T) {
 				errors.New("currency: tag is not a recognized currency"),
 				errors.New("currency: tag is not a recognized currency"),
 			},
+			description: "Case 10 - Bidder respond with not existing currencies",
 		},
 	}
 
@@ -660,9 +662,9 @@ func TestMultiCurrencies_RateConverterNotSet(t *testing.T) {
 		)
 
 		// Verify:
-		assert.Equal(t, false, (seatBid == nil && tc.expectedBidsCount != 0), fmt.Sprint("Case:", strings.Join(tc.bidCurrency, ",")))
-		assert.Equal(t, tc.expectedBidsCount, uint(len(seatBid.bids)), fmt.Sprint("Case:", strings.Join(tc.bidCurrency, ",")))
-		assert.ElementsMatch(t, tc.expectedBadCurrencyErrors, errs, fmt.Sprint("Case:", strings.Join(tc.bidCurrency, ",")))
+		assert.Equal(t, false, (seatBid == nil && tc.expectedBidsCount != 0), tc.description)
+		assert.Equal(t, tc.expectedBidsCount, uint(len(seatBid.bids)), tc.description)
+		assert.ElementsMatch(t, tc.expectedBadCurrencyErrors, errs, tc.description)
 	}
 }