2 files changed, 14 insertions, 18 deletions

diff --git a/src/mongo/dbtests/mock/mock_replica_set.cpp b/src/mongo/dbtests/mock/mock_replica_set.cpp
index b03ffd477ed..3871e1ef191 100644
--- a/src/mongo/dbtests/mock/mock_replica_set.cpp
+++ b/src/mongo/dbtests/mock/mock_replica_set.cpp
@@ -149,7 +149,7 @@ void MockReplicaSet::setPrimary(const string& hostAndPort) {
 
     _primaryHost = hostAndPort;
 
-    mockIsMasterCmd();
+    mockHelloCmd();
     mockReplSetGetStatusCmd();
 }
 
@@ -183,7 +183,7 @@ repl::ReplSetConfig MockReplicaSet::getReplConfig() const {
 
 void MockReplicaSet::setConfig(const repl::ReplSetConfig& newConfig) {
     _replConfig = newConfig;
-    mockIsMasterCmd();
+    mockHelloCmd();
     mockReplSetGetStatusCmd();
 }
 
@@ -211,14 +211,14 @@ BSONObj MockReplicaSet::mockHelloResponseFor(const MockRemoteDBServer& server) c
 
     const MemberConfig* member = _replConfig.findMemberByHostAndPort(hostAndPort);
     if (!member) {
-        builder.append("ismaster", false);
+        builder.append("isWritablePrimary", false);
         builder.append("secondary", false);
 
         vector<string> hostList;
         builder.append("hosts", hostList);
     } else {
         const bool isPrimary = hostAndPort.toString() == getPrimary();
-        builder.append("ismaster", isPrimary);
+        builder.append("isWritablePrimary", isPrimary);
         builder.append("secondary", !isPrimary);
 
         {
@@ -285,14 +285,12 @@ BSONObj MockReplicaSet::mockHelloResponseFor(const MockRemoteDBServer& server) c
     return builder.obj();
 }
 
-void MockReplicaSet::mockIsMasterCmd() {
+void MockReplicaSet::mockHelloCmd() {
     for (ReplNodeMap::iterator nodeIter = _nodeMap.begin(); nodeIter != _nodeMap.end();
          ++nodeIter) {
-        auto isMaster = mockHelloResponseFor(*nodeIter->second);
+        auto helloReply = mockHelloResponseFor(*nodeIter->second);
 
-        // DBClientBase::isMaster() sends "ismaster", but ReplicaSetMonitor sends "isMaster".
-        nodeIter->second->setCommandReply("ismaster", isMaster);
-        nodeIter->second->setCommandReply("isMaster", isMaster);
+        nodeIter->second->setCommandReply("hello", helloReply);
     }
 }
 
diff --git a/src/mongo/dbtests/mock/mock_replica_set.h b/src/mongo/dbtests/mock/mock_replica_set.h
index 677d0b822a1..d93ba956ee8 100644
--- a/src/mongo/dbtests/mock/mock_replica_set.h
+++ b/src/mongo/dbtests/mock/mock_replica_set.h
@@ -57,7 +57,7 @@ class ClockSource;
 class MockReplicaSet {
 public:
     /**
-     * Creates a mock replica set and automatically mocks the isMaster and replSetGetStatus commands
+     * Creates a mock replica set and automatically mocks the hello and replSetGetStatus commands
      * based on the default replica set configuration. Either the first node is primary and the
      * others are secondaries, or all are secondaries. By default, hostnames begin with "$", which
      * signals to ReplicaSetMonitor and to ConnectionString::connect that these are mocked hosts.
@@ -87,12 +87,11 @@ public:
     std::vector<std::string> getSecondaries() const;
 
     /**
-     * Sets the configuration for this replica sets. This also has a side effect
-     * of mocking the ismaster and replSetGetStatus command responses based on
-     * the new config.
+     * Sets the configuration for this replica sets. This also has a side effect of mocking the
+     * hello and replSetGetStatus command responses based on the new config.
      *
-     * Note: does not automatically select a new primary. Can be done manually by
-     * calling setPrimary.
+     * Note: does not automatically select a new primary. Can be done manually by calling
+     * setPrimary.
      */
     void setConfig(const repl::ReplSetConfig& newConfig);
 
@@ -138,10 +137,9 @@ private:
     typedef std::map<std::string, MockRemoteDBServer*> ReplNodeMap;
 
     /**
-     * Mocks the ismaster command based on the information on the current
-     * replica set configuration.
+     * Mocks the "hello" command based on the information on the current replica set configuration.
      */
-    void mockIsMasterCmd();
+    void mockHelloCmd();
 
     /**
      * Mock the hello response for the given server.