Fix intermittently failing test

Author: jchavannes

wallet/substrates/http_wallet_json.go

@@ -55,7 +55,7 @@ func (h *HTTPWalletJSON) api(ctx context.Context, call string, args any) ([]byte
 	// Send request
 	resp, err := h.httpClient.Do(req)
 	if err != nil {
-		return nil, err
+		return nil, fmt.Errorf("failed to make HTTP request: %w", err)
 	}
 	defer func() { _ = resp.Body.Close() }()
 

wallet/substrates/http_wallet_json_test.go

@@ -140,7 +140,7 @@ func TestHTTPWalletJSON_ErrorCases(t *testing.T) {
 
 	// Test HTTP request error
 	t.Run("HTTP error", func(t *testing.T) {
-		client := NewHTTPWalletJSON("", "http://invalid-url", nil)
+		client := NewHTTPWalletJSON("", "htp://invalid-url", nil)
 		_, err := client.api(ctx, "test", map[string]string{"key": "value"})
 		require.Error(t, err)
 	})