test(max-staleness): correct old test runners for redpref changes

Author: mbroadst

test/tests/functional/max_staleness_tests.js

@@ -140,7 +140,8 @@ function executeEntry(entry, path, callback) {
       expect(foundWindow).to.not.be.null;
     }
   } catch (err) {
-    callback(err, null);
+    if (file.error) return callback(null, null);
+    return callback(err, null);
   }
 
   callback(null, null);

test/tests/functional/replset_server_selection_tests.js

@@ -98,7 +98,12 @@ function executeEntry(file, path) {
     });
 
     // Create read preference
-    var rp = new ReadPreference(convert(readPreference.mode), readPreference.tag_sets);
+    var rp;
+    if (convert(readPreference.mode) !== 'primary' && readPreference.tag_sets) {
+      rp = new ReadPreference(convert(readPreference.mode), readPreference.tag_sets);
+    } else {
+      rp = new ReadPreference(convert(readPreference.mode));
+    }
 
     // Perform a pickServer
     var server = replset.pickServer(rp);