Keep pre-rebrand discovery installs compatible

tests/test_server_config.py

@@ -0,0 +1,43 @@
+from __future__ import annotations
+
+import os
+import unittest
+from unittest.mock import patch
+
+from straywild_discovery.server import ServerConfig
+
+
+class ServerConfigCompatibilityTests(unittest.TestCase):
+    def test_legacy_environment_remains_accepted(self) -> None:
+        with patch.dict(
+            os.environ,
+            {
+                "NETFISHING_DISCOVERY_HOST": "127.0.0.9",
+                "NETFISHING_DISCOVERY_PORT": "7791",
+                "NETFISHING_DISCOVERY_BUILD_REVISION": "legacy-config",
+            },
+            clear=True,
+        ):
+            config = ServerConfig.from_environment()
+        self.assertEqual(config.bind_host, "127.0.0.9")
+        self.assertEqual(config.bind_port, 7791)
+        self.assertEqual(config.build_revision, "legacy-config")
+
+    def test_straywild_environment_wins_over_legacy_names(self) -> None:
+        with patch.dict(
+            os.environ,
+            {
+                "straywild_DISCOVERY_HOST": "127.0.0.8",
+                "NETFISHING_DISCOVERY_HOST": "127.0.0.9",
+                "straywild_DISCOVERY_PORT": "7792",
+                "NETFISHING_DISCOVERY_PORT": "7791",
+            },
+            clear=True,
+        ):
+            config = ServerConfig.from_environment()
+        self.assertEqual(config.bind_host, "127.0.0.8")
+        self.assertEqual(config.bind_port, 7792)
+
+
+if __name__ == "__main__":
+    unittest.main()