all: fix warning of DeepEqual on error #23624 (#960)

core/vm/contracts_test.go

@@ -22,7 +22,6 @@ import (
 	"fmt"
 	"math/big"
 	"os"
-	"reflect"
 	"testing"
 
 	"github.com/XinFinOrg/XDPoSChain/common"
@@ -580,7 +579,7 @@ func testPrecompiledFailure(addr string, test precompiledFailureTest, t *testing
 	gas := p.RequiredGas(in)
 	t.Run(test.name, func(t *testing.T) {
 		_, _, err := RunPrecompiledContract(nil, p, in, gas)
-		if !reflect.DeepEqual(err, test.expectedError) {
+		if err.Error() != test.expectedError.Error() {
 			t.Errorf("Expected error [%v], got [%v]", test.expectedError, err)
 		}
 		// Verify that the precompile did not touch the input buffer

p2p/server_test.go

@@ -18,6 +18,7 @@ package p2p
 
 import (
 	"crypto/ecdsa"
+	"errors"
 	"math/rand"
 	"net"
 	"reflect"
@@ -563,7 +564,7 @@ func TestServerSetupConn(t *testing.T) {
 		}
 		p1, _ := net.Pipe()
 		srv.SetupConn(p1, test.flags, test.dialDest)
-		if !reflect.DeepEqual(test.tt.closeErr, test.wantCloseErr) {
+		if !errors.Is(test.tt.closeErr, test.wantCloseErr) {
 			t.Errorf("test %d: close error mismatch: got %q, want %q", i, test.tt.closeErr, test.wantCloseErr)
 		}
 		if test.tt.calls != test.wantCalls {

rpc/websocket_test.go

@@ -18,13 +18,13 @@ package rpc
 
 import (
 	"context"
+	"errors"
 	"io"
 	"net"
 	"net/http"
 	"net/http/httptest"
 	"net/http/httputil"
 	"net/url"
-	"reflect"
 	"strings"
 	"sync/atomic"
 	"testing"
@@ -69,7 +69,7 @@ func TestWebsocketOriginCheck(t *testing.T) {
 		t.Fatal("no error for wrong origin")
 	}
 	wantErr := wsHandshakeError{websocket.ErrBadHandshake, "403 Forbidden"}
-	if !reflect.DeepEqual(err, wantErr) {
+	if !errors.Is(err, wantErr) {
 		t.Fatalf("wrong error for wrong origin: %q", err)
 	}