Fix: parsing node error

internal/noderpc/rpc.go

@@ -99,9 +99,7 @@ func (rpc *NodeRPC) checkStatusCode(r io.Reader, statusCode int, checkStatusCode
 			return err
 		}
 		invalidResponseErr.Raw = data
-		if err := json.Unmarshal(data, &invalidResponseErr.Errors); err != nil {
-			return errors.Wrap(invalidResponseErr, err.Error())
-		}
+		_ = json.Unmarshal(data, &invalidResponseErr.Errors)
 		return invalidResponseErr
 	default:
 		return nil

internal/noderpc/rpc_test.go

@@ -0,0 +1,66 @@
+package noderpc
+
+import (
+	"io"
+	"strings"
+	"testing"
+
+	"github.com/stretchr/testify/require"
+)
+
+func TestNodeRPC_checkStatusCode(t *testing.T) {
+	tests := []struct {
+		name            string
+		r               io.Reader
+		statusCode      int
+		checkStatusCode bool
+		wantErr         bool
+		errString       string
+	}{
+		{
+			name:            "404 error",
+			r:               strings.NewReader("404 page not found"),
+			statusCode:      400,
+			checkStatusCode: true,
+			wantErr:         true,
+			errString:       "404 page not found",
+		}, {
+			name:            "200",
+			r:               strings.NewReader(""),
+			statusCode:      200,
+			checkStatusCode: true,
+			wantErr:         false,
+		}, {
+			name:            "501",
+			r:               strings.NewReader("node unavailiable"),
+			statusCode:      501,
+			checkStatusCode: true,
+			wantErr:         true,
+			errString:       "is unavailiable: 501",
+		}, {
+			name:            "no checking",
+			r:               strings.NewReader("node unavailiable"),
+			statusCode:      400,
+			checkStatusCode: false,
+			wantErr:         false,
+			errString:       "",
+		}, {
+			name:            "501 with no checking",
+			r:               strings.NewReader("node unavailiable"),
+			statusCode:      501,
+			checkStatusCode: false,
+			wantErr:         true,
+			errString:       "is unavailiable: 501",
+		},
+	}
+	for _, tt := range tests {
+		t.Run(tt.name, func(t *testing.T) {
+			rpc := new(NodeRPC)
+			err := rpc.checkStatusCode(tt.r, tt.statusCode, tt.checkStatusCode)
+			require.Equal(t, tt.wantErr, err != nil)
+			if err != nil {
+				require.ErrorContains(t, err, tt.errString)
+			}
+		})
+	}
+}