SERVER-9385 Make sure _id fields are extracted from modified lazy V8 objects

1 files changed, 16 insertions, 0 deletions

diff --git a/jstests/server9385.js b/jstests/server9385.js
new file mode 100644
index 00000000000..ee86891ce2a
--- /dev/null
+++ b/jstests/server9385.js
@@ -0,0 +1,16 @@
+// SERVER-9385 ensure saving a document derived from bson->js conversion doesn't lose it's _id
+t = db.server9385;
+t.drop();
+
+t.insert( { _id : 1, x : 1 } );
+x = t.findOne();
+x._id = 2;
+t.save( x );
+
+t.find().forEach( printjson );
+
+assert.eq( 2, t.find().count() );
+assert.eq( 2, t.find().itcount() );
+
+assert( t.findOne( { _id : 1 } ), "original insert missing" );
+assert( t.findOne( { _id : 2 } ), "save didn't work?" );