SERVER-18236 hang slaveOk/secondaryOk and readPreference off OpCtx

- secondaryOk is upconverted/downconverted from QueryOption_SlaveOk
- readPreference is upconverted/downconverted from $query wrapped commands or $queryOptions
- both are now accessed via OperationContext instead of being read from a mutable command object
- removed logic for parsing secondaryOk and readPreference from the command execution pipeline in dbcommands.cpp

1 files changed, 7 insertions, 0 deletions

diff --git a/src/mongo/unittest/unittest.h b/src/mongo/unittest/unittest.h
index e22f76c5f1d..7faa5dcb3bd 100644
--- a/src/mongo/unittest/unittest.h
+++ b/src/mongo/unittest/unittest.h
@@ -37,6 +37,7 @@
 #include <cmath>
 #include <sstream>
 #include <string>
+#include <utility>
 #include <vector>
 
 #include <boost/config.hpp>
@@ -511,6 +512,12 @@ DECLARE_COMPARISON_ASSERTION(GTE, >=);
             return swt.getValue();
         }
 
+        template <typename T>
+        T assertGet(StatusWith<T>&& swt) {
+            ASSERT_OK(swt.getStatus());
+            return std::move(swt.getValue());
+        }
+
         /**
          * Hack to support the runaway test observer in dbtests.  This is a hook that
          * unit test running harnesses (unittest_main and dbtests) must implement.