- Fix bug with the worker reallocating during the response

- Update .golangci and fix new warnings

Signed-off-by: Valery Piashchynski <[email protected]>

2 files changed, 132 insertions, 132 deletions

diff --git a/tests/plugins/http/handler_test.go b/tests/plugins/http/handler_test.go
index fc672e36..cf445aad 100644
--- a/tests/plugins/http/handler_test.go
+++ b/tests/plugins/http/handler_test.go
@@ -43,13 +43,13 @@ func TestHandler_Echo(t *testing.T) {
 
 	hs := &http.Server{Addr: ":8177", Handler: h}
 	defer func() {
-		err := hs.Shutdown(context.Background())
-		if err != nil {
+		errS := hs.Shutdown(context.Background())
+		if errS != nil {
 			t.Errorf("error during the shutdown: error %v", err)
 		}
 	}()
 	go func(server *http.Server) {
-		err := server.ListenAndServe()
+		err = server.ListenAndServe()
 		if err != nil && err != http.ErrServerClosed {
 			t.Errorf("error listening the interface: error %v", err)
 		}
@@ -97,14 +97,14 @@ func TestHandler_Headers(t *testing.T) {
 
 	hs := &http.Server{Addr: ":8078", Handler: h}
 	defer func() {
-		err := hs.Shutdown(context.Background())
-		if err != nil {
+		errS := hs.Shutdown(context.Background())
+		if errS != nil {
 			t.Errorf("error during the shutdown: error %v", err)
 		}
 	}()
 
 	go func() {
-		err := hs.ListenAndServe()
+		err = hs.ListenAndServe()
 		if err != nil && err != http.ErrServerClosed {
 			t.Errorf("error listening the interface: error %v", err)
 		}
@@ -119,7 +119,7 @@ func TestHandler_Headers(t *testing.T) {
 	r, err := http.DefaultClient.Do(req)
 	assert.NoError(t, err)
 	defer func() {
-		err := r.Body.Close()
+		err = r.Body.Close()
 		if err != nil {
 			t.Errorf("error during the closing Body: error %v", err)
 		}
@@ -158,14 +158,14 @@ func TestHandler_Empty_User_Agent(t *testing.T) {
 
 	hs := &http.Server{Addr: ":19658", Handler: h}
 	defer func() {
-		err := hs.Shutdown(context.Background())
-		if err != nil {
+		errS := hs.Shutdown(context.Background())
+		if errS != nil {
 			t.Errorf("error during the shutdown: error %v", err)
 		}
 	}()
 
 	go func() {
-		err := hs.ListenAndServe()
+		err = hs.ListenAndServe()
 		if err != nil && err != http.ErrServerClosed {
 			t.Errorf("error listening the interface: error %v", err)
 		}
@@ -180,7 +180,7 @@ func TestHandler_Empty_User_Agent(t *testing.T) {
 	r, err := http.DefaultClient.Do(req)
 	assert.NoError(t, err)
 	defer func() {
-		err := r.Body.Close()
+		err = r.Body.Close()
 		if err != nil {
 			t.Errorf("error during the closing Body: error %v", err)
 		}
@@ -218,14 +218,14 @@ func TestHandler_User_Agent(t *testing.T) {
 
 	hs := &http.Server{Addr: ":25688", Handler: h}
 	defer func() {
-		err := hs.Shutdown(context.Background())
-		if err != nil {
+		errS := hs.Shutdown(context.Background())
+		if errS != nil {
 			t.Errorf("error during the shutdown: error %v", err)
 		}
 	}()
 
 	go func() {
-		err := hs.ListenAndServe()
+		err = hs.ListenAndServe()
 		if err != nil && err != http.ErrServerClosed {
 			t.Errorf("error listening the interface: error %v", err)
 		}
@@ -240,7 +240,7 @@ func TestHandler_User_Agent(t *testing.T) {
 	r, err := http.DefaultClient.Do(req)
 	assert.NoError(t, err)
 	defer func() {
-		err := r.Body.Close()
+		err = r.Body.Close()
 		if err != nil {
 			t.Errorf("error during the closing Body: error %v", err)
 		}
@@ -278,14 +278,14 @@ func TestHandler_Cookies(t *testing.T) {
 
 	hs := &http.Server{Addr: ":8079", Handler: h}
 	defer func() {
-		err := hs.Shutdown(context.Background())
-		if err != nil {
+		errS := hs.Shutdown(context.Background())
+		if errS != nil {
 			t.Errorf("error during the shutdown: error %v", err)
 		}
 	}()
 
 	go func() {
-		err := hs.ListenAndServe()
+		err = hs.ListenAndServe()
 		if err != nil && err != http.ErrServerClosed {
 			t.Errorf("error listening the interface: error %v", err)
 		}
@@ -300,7 +300,7 @@ func TestHandler_Cookies(t *testing.T) {
 	r, err := http.DefaultClient.Do(req)
 	assert.NoError(t, err)
 	defer func() {
-		err := r.Body.Close()
+		err = r.Body.Close()
 		if err != nil {
 			t.Errorf("error during the closing Body: error %v", err)
 		}
@@ -343,14 +343,14 @@ func TestHandler_JsonPayload_POST(t *testing.T) {
 
 	hs := &http.Server{Addr: ":8090", Handler: h}
 	defer func() {
-		err := hs.Shutdown(context.Background())
-		if err != nil {
+		errS := hs.Shutdown(context.Background())
+		if errS != nil {
 			t.Errorf("error during the shutdown: error %v", err)
 		}
 	}()
 
 	go func() {
-		err := hs.ListenAndServe()
+		err = hs.ListenAndServe()
 		if err != nil && err != http.ErrServerClosed {
 			t.Errorf("error listening the interface: error %v", err)
 		}
@@ -369,7 +369,7 @@ func TestHandler_JsonPayload_POST(t *testing.T) {
 	r, err := http.DefaultClient.Do(req)
 	assert.NoError(t, err)
 	defer func() {
-		err := r.Body.Close()
+		err = r.Body.Close()
 		if err != nil {
 			t.Errorf("error during the closing Body: error %v", err)
 		}
@@ -407,14 +407,14 @@ func TestHandler_JsonPayload_PUT(t *testing.T) {
 
 	hs := &http.Server{Addr: ":8081", Handler: h}
 	defer func() {
-		err := hs.Shutdown(context.Background())
-		if err != nil {
+		errS := hs.Shutdown(context.Background())
+		if errS != nil {
 			t.Errorf("error during the shutdown: error %v", err)
 		}
 	}()
 
 	go func() {
-		err := hs.ListenAndServe()
+		err = hs.ListenAndServe()
 		if err != nil && err != http.ErrServerClosed {
 			t.Errorf("error listening the interface: error %v", err)
 		}
@@ -429,7 +429,7 @@ func TestHandler_JsonPayload_PUT(t *testing.T) {
 	r, err := http.DefaultClient.Do(req)
 	assert.NoError(t, err)
 	defer func() {
-		err := r.Body.Close()
+		err = r.Body.Close()
 		if err != nil {
 			t.Errorf("error during the closing Body: error %v", err)
 		}
@@ -467,14 +467,14 @@ func TestHandler_JsonPayload_PATCH(t *testing.T) {
 
 	hs := &http.Server{Addr: ":8082", Handler: h}
 	defer func() {
-		err := hs.Shutdown(context.Background())
-		if err != nil {
+		errS := hs.Shutdown(context.Background())
+		if errS != nil {
 			t.Errorf("error during the shutdown: error %v", err)
 		}
 	}()
 
 	go func() {
-		err := hs.ListenAndServe()
+		err = hs.ListenAndServe()
 		if err != nil && err != http.ErrServerClosed {
 			t.Errorf("error listening the interface: error %v", err)
 		}
@@ -489,7 +489,7 @@ func TestHandler_JsonPayload_PATCH(t *testing.T) {
 	r, err := http.DefaultClient.Do(req)
 	assert.NoError(t, err)
 	defer func() {
-		err := r.Body.Close()
+		err = r.Body.Close()
 		if err != nil {
 			t.Errorf("error during the closing Body: error %v", err)
 		}
@@ -527,14 +527,14 @@ func TestHandler_FormData_POST(t *testing.T) {
 
 	hs := &http.Server{Addr: ":8083", Handler: h}
 	defer func() {
-		err := hs.Shutdown(context.Background())
-		if err != nil {
+		errS := hs.Shutdown(context.Background())
+		if errS != nil {
 			t.Errorf("error during the shutdown: error %v", err)
 		}
 	}()
 
 	go func() {
-		err := hs.ListenAndServe()
+		err = hs.ListenAndServe()
 		if err != nil && err != http.ErrServerClosed {
 			t.Errorf("error listening the interface: error %v", err)
 		}
@@ -560,7 +560,7 @@ func TestHandler_FormData_POST(t *testing.T) {
 	r, err := http.DefaultClient.Do(req)
 	assert.NoError(t, err)
 	defer func() {
-		err := r.Body.Close()
+		err = r.Body.Close()
 		if err != nil {
 			t.Errorf("error during the closing Body: error %v", err)
 		}
@@ -600,14 +600,14 @@ func TestHandler_FormData_POST_Overwrite(t *testing.T) {
 
 	hs := &http.Server{Addr: ":8083", Handler: h}
 	defer func() {
-		err := hs.Shutdown(context.Background())
-		if err != nil {
+		errS := hs.Shutdown(context.Background())
+		if errS != nil {
 			t.Errorf("error during the shutdown: error %v", err)
 		}
 	}()
 
 	go func() {
-		err := hs.ListenAndServe()
+		err = hs.ListenAndServe()
 		if err != nil && err != http.ErrServerClosed {
 			t.Errorf("error listening the interface: error %v", err)
 		}
@@ -634,7 +634,7 @@ func TestHandler_FormData_POST_Overwrite(t *testing.T) {
 	r, err := http.DefaultClient.Do(req)
 	assert.NoError(t, err)
 	defer func() {
-		err := r.Body.Close()
+		err = r.Body.Close()
 		if err != nil {
 			t.Errorf("error during the closing Body: error %v", err)
 		}
@@ -673,14 +673,14 @@ func TestHandler_FormData_POST_Form_UrlEncoded_Charset(t *testing.T) {
 
 	hs := &http.Server{Addr: ":8083", Handler: h}
 	defer func() {
-		err := hs.Shutdown(context.Background())
-		if err != nil {
+		errS := hs.Shutdown(context.Background())
+		if errS != nil {
 			t.Errorf("error during the shutdown: error %v", err)
 		}
 	}()
 
 	go func() {
-		err := hs.ListenAndServe()
+		err = hs.ListenAndServe()
 		if err != nil && err != http.ErrServerClosed {
 			t.Errorf("error listening the interface: error %v", err)
 		}
@@ -706,7 +706,7 @@ func TestHandler_FormData_POST_Form_UrlEncoded_Charset(t *testing.T) {
 	r, err := http.DefaultClient.Do(req)
 	assert.NoError(t, err)
 	defer func() {
-		err := r.Body.Close()
+		err = r.Body.Close()
 		if err != nil {
 			t.Errorf("error during the closing Body: error %v", err)
 		}
@@ -745,14 +745,14 @@ func TestHandler_FormData_PUT(t *testing.T) {
 
 	hs := &http.Server{Addr: ":17834", Handler: h}
 	defer func() {
-		err := hs.Shutdown(context.Background())
-		if err != nil {
+		errS := hs.Shutdown(context.Background())
+		if errS != nil {
 			t.Errorf("error during the shutdown: error %v", err)
 		}
 	}()
 
 	go func() {
-		err := hs.ListenAndServe()
+		err = hs.ListenAndServe()
 		if err != nil && err != http.ErrServerClosed {
 			t.Errorf("error listening the interface: error %v", err)
 		}
@@ -778,7 +778,7 @@ func TestHandler_FormData_PUT(t *testing.T) {
 	r, err := http.DefaultClient.Do(req)
 	assert.NoError(t, err)
 	defer func() {
-		err := r.Body.Close()
+		err = r.Body.Close()
 		if err != nil {
 			t.Errorf("error during the closing Body: error %v", err)
 		}
@@ -817,14 +817,14 @@ func TestHandler_FormData_PATCH(t *testing.T) {
 
 	hs := &http.Server{Addr: ":8085", Handler: h}
 	defer func() {
-		err := hs.Shutdown(context.Background())
-		if err != nil {
+		errS := hs.Shutdown(context.Background())
+		if errS != nil {
 			t.Errorf("error during the shutdown: error %v", err)
 		}
 	}()
 
 	go func() {
-		err := hs.ListenAndServe()
+		err = hs.ListenAndServe()
 		if err != nil && err != http.ErrServerClosed {
 			t.Errorf("error listening the interface: error %v", err)
 		}
@@ -850,7 +850,7 @@ func TestHandler_FormData_PATCH(t *testing.T) {
 	r, err := http.DefaultClient.Do(req)
 	assert.NoError(t, err)
 	defer func() {
-		err := r.Body.Close()
+		err = r.Body.Close()
 		if err != nil {
 			t.Errorf("error during the closing Body: error %v", err)
 		}
@@ -889,14 +889,14 @@ func TestHandler_Multipart_POST(t *testing.T) {
 
 	hs := &http.Server{Addr: ":8019", Handler: h}
 	defer func() {
-		err := hs.Shutdown(context.Background())
-		if err != nil {
+		errS := hs.Shutdown(context.Background())
+		if errS != nil {
 			t.Errorf("error during the shutdown: error %v", err)
 		}
 	}()
 
 	go func() {
-		err := hs.ListenAndServe()
+		err = hs.ListenAndServe()
 		if err != nil && err != http.ErrServerClosed {
 			t.Errorf("error listening the interface: error %v", err)
 		}
@@ -964,7 +964,7 @@ func TestHandler_Multipart_POST(t *testing.T) {
 	r, err := http.DefaultClient.Do(req)
 	assert.NoError(t, err)
 	defer func() {
-		err := r.Body.Close()
+		err = r.Body.Close()
 		if err != nil {
 			t.Errorf("error during the closing Body: error %v", err)
 		}
@@ -1003,14 +1003,14 @@ func TestHandler_Multipart_PUT(t *testing.T) {
 
 	hs := &http.Server{Addr: ":8020", Handler: h}
 	defer func() {
-		err := hs.Shutdown(context.Background())
-		if err != nil {
+		errS := hs.Shutdown(context.Background())
+		if errS != nil {
 			t.Errorf("error during the shutdown: error %v", err)
 		}
 	}()
 
 	go func() {
-		err := hs.ListenAndServe()
+		err = hs.ListenAndServe()
 		if err != nil && err != http.ErrServerClosed {
 			t.Errorf("error listening the interface: error %v", err)
 		}
@@ -1078,7 +1078,7 @@ func TestHandler_Multipart_PUT(t *testing.T) {
 	r, err := http.DefaultClient.Do(req)
 	assert.NoError(t, err)
 	defer func() {
-		err := r.Body.Close()
+		err = r.Body.Close()
 		if err != nil {
 			t.Errorf("error during the closing Body: error %v", err)
 		}
@@ -1117,14 +1117,14 @@ func TestHandler_Multipart_PATCH(t *testing.T) {
 
 	hs := &http.Server{Addr: ":8021", Handler: h}
 	defer func() {
-		err := hs.Shutdown(context.Background())
-		if err != nil {
+		errS := hs.Shutdown(context.Background())
+		if errS != nil {
 			t.Errorf("error during the shutdown: error %v", err)
 		}
 	}()
 
 	go func() {
-		err := hs.ListenAndServe()
+		err = hs.ListenAndServe()
 
 		if err != nil && err != http.ErrServerClosed {
 			t.Errorf("error listening the interface: error %v", err)
@@ -1194,7 +1194,7 @@ func TestHandler_Multipart_PATCH(t *testing.T) {
 	r, err := http.DefaultClient.Do(req)
 	assert.NoError(t, err)
 	defer func() {
-		err := r.Body.Close()
+		err = r.Body.Close()
 		if err != nil {
 			t.Errorf("error during the closing Body: error %v", err)
 		}
@@ -1233,14 +1233,14 @@ func TestHandler_Error(t *testing.T) {
 
 	hs := &http.Server{Addr: ":8177", Handler: h}
 	defer func() {
-		err := hs.Shutdown(context.Background())
-		if err != nil {
+		errS := hs.Shutdown(context.Background())
+		if errS != nil {
 			t.Errorf("error during the shutdown: error %v", err)
 		}
 	}()
 
 	go func() {
-		err := hs.ListenAndServe()
+		err = hs.ListenAndServe()
 		if err != nil && err != http.ErrServerClosed {
 			t.Errorf("error listening the interface: error %v", err)
 		}
@@ -1279,14 +1279,14 @@ func TestHandler_Error2(t *testing.T) {
 
 	hs := &http.Server{Addr: ":8177", Handler: h}
 	defer func() {
-		err := hs.Shutdown(context.Background())
-		if err != nil {
+		errS := hs.Shutdown(context.Background())
+		if errS != nil {
 			t.Errorf("error during the shutdown: error %v", err)
 		}
 	}()
 
 	go func() {
-		err := hs.ListenAndServe()
+		err = hs.ListenAndServe()
 		if err != nil && err != http.ErrServerClosed {
 			t.Errorf("error listening the interface: error %v", err)
 		}
@@ -1325,8 +1325,8 @@ func TestHandler_Error3(t *testing.T) {
 
 	hs := &http.Server{Addr: ":8177", Handler: h}
 	defer func() {
-		err := hs.Shutdown(context.Background())
-		if err != nil {
+		errS := hs.Shutdown(context.Background())
+		if errS != nil {
 			t.Errorf("error during the shutdown: error %v", err)
 		}
 	}()
@@ -1384,14 +1384,14 @@ func TestHandler_ResponseDuration(t *testing.T) {
 
 	hs := &http.Server{Addr: ":8177", Handler: h}
 	defer func() {
-		err := hs.Shutdown(context.Background())
-		if err != nil {
+		errS := hs.Shutdown(context.Background())
+		if errS != nil {
 			t.Errorf("error during the shutdown: error %v", err)
 		}
 	}()
 
 	go func() {
-		err := hs.ListenAndServe()
+		err = hs.ListenAndServe()
 		if err != nil && err != http.ErrServerClosed {
 			t.Errorf("error listening the interface: error %v", err)
 		}
@@ -1445,14 +1445,14 @@ func TestHandler_ResponseDurationDelayed(t *testing.T) {
 
 	hs := &http.Server{Addr: ":8177", Handler: h}
 	defer func() {
-		err := hs.Shutdown(context.Background())
-		if err != nil {
+		errS := hs.Shutdown(context.Background())
+		if errS != nil {
 			t.Errorf("error during the shutdown: error %v", err)
 		}
 	}()
 
 	go func() {
-		err := hs.ListenAndServe()
+		err = hs.ListenAndServe()
 		if err != nil && err != http.ErrServerClosed {
 			t.Errorf("error listening the interface: error %v", err)
 		}
@@ -1505,8 +1505,8 @@ func TestHandler_ErrorDuration(t *testing.T) {
 
 	hs := &http.Server{Addr: ":8177", Handler: h}
 	defer func() {
-		err := hs.Shutdown(context.Background())
-		if err != nil {
+		errS := hs.Shutdown(context.Background())
+		if errS != nil {
 			t.Errorf("error during the shutdown: error %v", err)
 		}
 	}()
@@ -1579,14 +1579,14 @@ func TestHandler_IP(t *testing.T) {
 
 	hs := &http.Server{Addr: "127.0.0.1:8177", Handler: h}
 	defer func() {
-		err := hs.Shutdown(context.Background())
-		if err != nil {
+		errS := hs.Shutdown(context.Background())
+		if errS != nil {
 			t.Errorf("error during the shutdown: error %v", err)
 		}
 	}()
 
 	go func() {
-		err := hs.ListenAndServe()
+		err = hs.ListenAndServe()
 		if err != nil && err != http.ErrServerClosed {
 			t.Errorf("error listening the interface: error %v", err)
 		}
@@ -1640,14 +1640,14 @@ func TestHandler_XRealIP(t *testing.T) {
 
 	hs := &http.Server{Addr: "127.0.0.1:8179", Handler: h}
 	defer func() {
-		err := hs.Shutdown(context.Background())
-		if err != nil {
+		errS := hs.Shutdown(context.Background())
+		if errS != nil {
 			t.Errorf("error during the shutdown: error %v", err)
 		}
 	}()
 
 	go func() {
-		err := hs.ListenAndServe()
+		err = hs.ListenAndServe()
 		if err != nil && err != http.ErrServerClosed {
 			t.Errorf("error listening the interface: error %v", err)
 		}
@@ -1706,14 +1706,14 @@ func TestHandler_XForwardedFor(t *testing.T) {
 
 	hs := &http.Server{Addr: "127.0.0.1:8177", Handler: h}
 	defer func() {
-		err := hs.Shutdown(context.Background())
-		if err != nil {
+		errS := hs.Shutdown(context.Background())
+		if errS != nil {
 			t.Errorf("error during the shutdown: error %v", err)
 		}
 	}()
 
 	go func() {
-		err := hs.ListenAndServe()
+		err = hs.ListenAndServe()
 		if err != nil && err != http.ErrServerClosed {
 			t.Errorf("error listening the interface: error %v", err)
 		}
@@ -1771,14 +1771,14 @@ func TestHandler_XForwardedFor_NotTrustedRemoteIp(t *testing.T) {
 
 	hs := &http.Server{Addr: "127.0.0.1:8177", Handler: h}
 	defer func() {
-		err := hs.Shutdown(context.Background())
-		if err != nil {
+		errS := hs.Shutdown(context.Background())
+		if errS != nil {
 			t.Errorf("error during the shutdown: error %v", err)
 		}
 	}()
 
 	go func() {
-		err := hs.ListenAndServe()
+		err = hs.ListenAndServe()
 		if err != nil && err != http.ErrServerClosed {
 			t.Errorf("error listening the interface: error %v", err)
 		}
@@ -1819,8 +1819,8 @@ func BenchmarkHandler_Listen_Echo(b *testing.B) {
 
 	hs := &http.Server{Addr: ":8177", Handler: h}
 	defer func() {
-		err := hs.Shutdown(context.Background())
-		if err != nil {
+		errS := hs.Shutdown(context.Background())
+		if errS != nil {
 			b.Errorf("error during the shutdown: error %v", err)
 		}
 	}()
diff --git a/tests/plugins/http/uploads_test.go b/tests/plugins/http/uploads_test.go
index dd986902..68d4cbae 100644
--- a/tests/plugins/http/uploads_test.go
+++ b/tests/plugins/http/uploads_test.go
@@ -48,16 +48,16 @@ func TestHandler_Upload_File(t *testing.T) {
 
 	hs := &http.Server{Addr: ":8021", Handler: h}
 	defer func() {
-		err := hs.Shutdown(context.Background())
-		if err != nil {
-			t.Errorf("error during the shutdown: error %v", err)
+		errS := hs.Shutdown(context.Background())
+		if errS != nil {
+			t.Errorf("error during the shutdown: error %v", errS)
 		}
 	}()
 
 	go func() {
-		err := hs.ListenAndServe()
-		if err != nil && err != http.ErrServerClosed {
-			t.Errorf("error listening the interface: error %v", err)
+		errL := hs.ListenAndServe()
+		if errL != nil && errL != http.ErrServerClosed {
+			t.Errorf("error listening the interface: error %v", errL)
 		}
 	}()
 	time.Sleep(time.Millisecond * 10)
@@ -93,9 +93,9 @@ func TestHandler_Upload_File(t *testing.T) {
 	r, err := http.DefaultClient.Do(req)
 	assert.NoError(t, err)
 	defer func() {
-		err := r.Body.Close()
-		if err != nil {
-			t.Errorf("error closing the Body: error %v", err)
+		errC := r.Body.Close()
+		if errC != nil {
+			t.Errorf("error closing the Body: error %v", errC)
 		}
 	}()
 
@@ -131,16 +131,16 @@ func TestHandler_Upload_NestedFile(t *testing.T) {
 
 	hs := &http.Server{Addr: ":8021", Handler: h}
 	defer func() {
-		err := hs.Shutdown(context.Background())
-		if err != nil {
-			t.Errorf("error during the shutdown: error %v", err)
+		errS := hs.Shutdown(context.Background())
+		if errS != nil {
+			t.Errorf("error during the shutdown: error %v", errS)
 		}
 	}()
 
 	go func() {
-		err := hs.ListenAndServe()
-		if err != nil && err != http.ErrServerClosed {
-			t.Errorf("error listening the interface: error %v", err)
+		errL := hs.ListenAndServe()
+		if errL != nil && errL != http.ErrServerClosed {
+			t.Errorf("error listening the interface: error %v", errL)
 		}
 	}()
 	time.Sleep(time.Millisecond * 10)
@@ -150,9 +150,9 @@ func TestHandler_Upload_NestedFile(t *testing.T) {
 
 	f := mustOpen(testFile)
 	defer func() {
-		err := f.Close()
-		if err != nil {
-			t.Errorf("failed to close a file: error %v", err)
+		errC := hs.Close()
+		if errC != nil {
+			t.Errorf("failed to close a file: error %v", errC)
 		}
 	}()
 	fw, err := w.CreateFormFile("upload[x][y][z][]", f.Name())
@@ -176,9 +176,9 @@ func TestHandler_Upload_NestedFile(t *testing.T) {
 	r, err := http.DefaultClient.Do(req)
 	assert.NoError(t, err)
 	defer func() {
-		err := r.Body.Close()
-		if err != nil {
-			t.Errorf("error closing the Body: error %v", err)
+		errC := r.Body.Close()
+		if errC != nil {
+			t.Errorf("error closing the Body: error %v", errC)
 		}
 	}()
 
@@ -214,14 +214,14 @@ func TestHandler_Upload_File_NoTmpDir(t *testing.T) {
 
 	hs := &http.Server{Addr: ":8021", Handler: h}
 	defer func() {
-		err := hs.Shutdown(context.Background())
-		if err != nil {
+		errS := hs.Shutdown(context.Background())
+		if errS != nil {
 			t.Errorf("error during the shutdown: error %v", err)
 		}
 	}()
 
 	go func() {
-		err := hs.ListenAndServe()
+		err = hs.ListenAndServe()
 		if err != nil && err != http.ErrServerClosed {
 			t.Errorf("error listening the interface: error %v", err)
 		}
@@ -233,9 +233,9 @@ func TestHandler_Upload_File_NoTmpDir(t *testing.T) {
 
 	f := mustOpen(testFile)
 	defer func() {
-		err := f.Close()
-		if err != nil {
-			t.Errorf("failed to close a file: error %v", err)
+		errC := hs.Close()
+		if errC != nil {
+			t.Errorf("failed to close a file: error %v", errC)
 		}
 	}()
 	fw, err := w.CreateFormFile("upload", f.Name())
@@ -259,9 +259,9 @@ func TestHandler_Upload_File_NoTmpDir(t *testing.T) {
 	r, err := http.DefaultClient.Do(req)
 	assert.NoError(t, err)
 	defer func() {
-		err := r.Body.Close()
-		if err != nil {
-			t.Errorf("error closing the Body: error %v", err)
+		errC := r.Body.Close()
+		if errC != nil {
+			t.Errorf("error closing the Body: error %v", errC)
 		}
 	}()
 
@@ -297,14 +297,14 @@ func TestHandler_Upload_File_Forbids(t *testing.T) {
 
 	hs := &http.Server{Addr: ":8021", Handler: h}
 	defer func() {
-		err := hs.Shutdown(context.Background())
-		if err != nil {
+		errS := hs.Shutdown(context.Background())
+		if errS != nil {
 			t.Errorf("error during the shutdown: error %v", err)
 		}
 	}()
 
 	go func() {
-		err := hs.ListenAndServe()
+		err = hs.ListenAndServe()
 		if err != nil && err != http.ErrServerClosed {
 			t.Errorf("error listening the interface: error %v", err)
 		}
@@ -316,9 +316,9 @@ func TestHandler_Upload_File_Forbids(t *testing.T) {
 
 	f := mustOpen(testFile)
 	defer func() {
-		err := f.Close()
-		if err != nil {
-			t.Errorf("failed to close a file: error %v", err)
+		errC := hs.Close()
+		if errC != nil {
+			t.Errorf("failed to close a file: error %v", errC)
 		}
 	}()
 	fw, err := w.CreateFormFile("upload", f.Name())
@@ -342,9 +342,9 @@ func TestHandler_Upload_File_Forbids(t *testing.T) {
 	r, err := http.DefaultClient.Do(req)
 	assert.NoError(t, err)
 	defer func() {
-		err := r.Body.Close()
-		if err != nil {
-			t.Errorf("error closing the Body: error %v", err)
+		errC := r.Body.Close()
+		if errC != nil {
+			t.Errorf("error closing the Body: error %v", errC)
 		}
 	}()