fix(topology): ensure read preferences are translated on selection

mbroadst · mbroadst · commit ebefb7b91815 · 2019-02-27T08:09:24.000-05:00
diff --git a/lib/sdam/topology.js b/lib/sdam/topology.js
@@ -295,7 +295,10 @@ class Topology extends EventEmitter {
       callback = options;
       if (typeof selector !== 'function') {
         options = selector;
-        selector = readPreferenceServerSelector(options.readPreference);
+
+        translateReadPreference(options);
+        const readPreference = options.readPreference || ReadPreference.primary;
+        selector = readPreferenceServerSelector(readPreference);
       } else {
         options = {};
       }
