From 8b204c75cb3375501034f90994fd2e17af82ff4d Mon Sep 17 00:00:00 2001
From: Matthias <xmatthias@outlook.com>
Date: Wed, 8 Apr 2026 06:50:48 +0200
Subject: [PATCH] test: test validate_demo / dry-run combo

---
 tests/test_configuration.py | 16 ++++++++++++++++
 1 file changed, 16 insertions(+)

diff --git a/tests/test_configuration.py b/tests/test_configuration.py
index ba54e7b52..e58a7176a 100644
--- a/tests/test_configuration.py
+++ b/tests/test_configuration.py
@@ -1045,6 +1045,22 @@ def test__validate_orderflow(default_conf) -> None:
     validate_config_consistency(conf)
 
 
+def test__validate_demo_trading(default_conf_usdt) -> None:
+    conf = deepcopy(default_conf_usdt)
+    validate_config_consistency(conf)
+    # explicitly set dry-run to clarify intent
+    conf["dry_run"] = True
+    conf["exchange"]["demo_trading"] = True
+
+    with pytest.raises(
+        ConfigurationError,
+        match=r"Demo trading cannot be used together with dry_run\.",
+    ):
+        validate_config_consistency(conf)
+    conf["dry_run"] = False
+    validate_config_consistency(conf)
+
+
 def test_validate_edge_removal(default_conf):
     default_conf["edge"] = {
         "enabled": True,