Ensure the live_server host is readonly attribute

Author: vitalk

pytest_flask/fixtures.py

@@ -53,11 +53,15 @@ class LiveServer(object):
 
     def __init__(self, app, port, wait):
         self.app = app
-        self.host = 'localhost'
         self.port = port
         self.wait = wait
         self._process = None
 
+    @property
+    def host(self):
+        """Returns the host to run application, e.g. 'localhost'."""
+        return 'localhost'
+
     def start(self):
         """Start application in a separate process."""
         def worker(app, port):

tests/test_live_server.py

@@ -15,6 +15,10 @@ def test_init(self, live_server):
         assert live_server.port
         assert live_server.host == 'localhost'
 
+    def test_host_is_readonly(self, live_server):
+        with pytest.raises(AttributeError):
+            live_server.host = 'example.com'
+
     def test_server_is_alive(self, live_server):
         assert live_server._process
         assert live_server._process.is_alive()