Test that readPreferenceTags are always interpreted as an array

JAVA-3681

Author: jstewart148

driver-core/src/test/resources/uri-options/read-preference-options.json

@@ -21,6 +21,21 @@
         "maxStalenessSeconds": 120
       }
     },
+    {
+      "description": "Single readPreferenceTags is parsed as array of size one",
+      "uri": "mongodb://example.com/?readPreference=secondary&readPreferenceTags=dc:ny",
+      "valid": true,
+      "warning": false,
+      "hosts": null,
+      "auth": null,
+      "options": {
+        "readPreferenceTags": [
+          {
+            "dc": "ny"
+          }
+        ]
+      }
+    },
     {
       "description": "Invalid readPreferenceTags causes a warning",
       "uri": "mongodb://example.com/?readPreferenceTags=invalid",