.

lib/tests/test_zodb.py

@@ -354,8 +354,8 @@ def test_zodb_onresync():
 
 # test that zurl does not change from one open to another storage open.
 def test_zurlstable():
-    if not isinstance(testdb, testing.TestDB_FileStorage):
-        pytest.xfail(reason="zstor_2zurl is TODO for ZEO and NEO")
+    if not isinstance(testdb, (testing.TestDB_FileStorage, testing.TestDB_ZEO)):
+        pytest.xfail(reason="zstor_2zurl is TODO for NEO")
     zurl0 = None
     for i in range(10):
         zstor = testdb.getZODBStorage()

lib/zodb.py

@@ -317,5 +317,26 @@ def zstor_2zurl(zstor):
     if isinstance(zstor, FileStorage):
         return "file://%s" % (zstor._file_name,)
 
-    # TODO ZEO + NEO support
+    ztype = type(zstor).__module__ + "." + type(zstor).__name__
+    if ztype == "ZEO.ClientStorage.ClientStorage":
+        u = "zeo://"
+        addr = zstor._addr
+        if len(addr) != 1:
+            raise NotImplementedError("ZEO client has multiple configured servers: %r" % (addr,))
+        addr = addr[0]
+        # addr is either TCP (host,port) or UNIX path
+        if isinstance(addr, str):
+            u += addr
+        else:
+            host, port = addr
+            u += '%s:%d' % (host, port)
+
+        storage = zstor._storage
+        if storage != "1":
+            u += "?storage=%s" % storage
+
+        # TODO ssl
+        return u
+
+    # TODO NEO support
     raise NotImplementedError("don't know how to extract zurl from %r" % zstor)