Ensure separate contexts for nameserver tests

posttroll/tests/test_nameserver.py

@@ -9,7 +9,9 @@
 from unittest import mock
 
 import pytest
+import zmq
 
+import posttroll.backends.zmq
 from posttroll import config
 from posttroll.backends.zmq.ns import create_nameserver_address
 from posttroll.message import Message
@@ -18,6 +20,15 @@
 from posttroll.subscriber import Subscribe
 
 
+@pytest.fixture(autouse=True)
+def new_context(monkeypatch):
+    """Create a new context for each test."""
+    context = zmq.Context()
+    def get_context():
+        return context
+    monkeypatch.setattr(posttroll.backends.zmq, "get_context", get_context)
+
+
 def free_port() -> int:
     """Get a free port.