text: t = db.find1;
  t.drop();
  
  lookAtDocumentMetrics = false;
  
  if ( db.serverStatus().metrics ) {
      var ss = db.serverStatus();
      lookAtDocumentMetrics = ss.metrics.document != null && ss.metrics.queryExecutor.scanned != null;
  }
  
  print( "lookAtDocumentMetrics: " + lookAtDocumentMetrics );
  
  if ( lookAtDocumentMetrics ) {
      // ignore mongos
      nscannedStart = db.serverStatus().metrics.queryExecutor.scanned
  }
  
  
  t.save( { a : 1 , b : "hi" } );
  t.save( { a : 2 , b : "hi" } );
  
  /* very basic test of $snapshot just that we get some result */
  // we are assumign here that snapshot uses the id index; maybe one day it doesn't if so this would need to change then
  assert( t.find({$query:{},$snapshot:1})[0].a == 1 , "$snapshot simple test 1" );
  var q = t.findOne();
  q.c = "zzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzz";
  t.save(q); // will move a:1 object to after a:2 in the file 
  assert( t.find({$query:{},$snapshot:1})[0].a == 1 , "$snapshot simple test 2" );
  
  assert( t.findOne( { a : 1 } ).b != null , "A" );
  assert( t.findOne( { a : 1 } , { a : 1 } ).b == null , "B");
  
  assert( t.find( { a : 1 } )[0].b != null , "C" );
  assert( t.find( { a : 1 } , { a : 1 } )[0].b == null , "D" );
  assert( t.find( { a : 1 } , { a : 1 } ).sort( { a : 1 } )[0].b == null , "D" );
  
  id = t.findOne()._id;
  
  assert( t.findOne( id ) , "E" );
  assert( t.findOne( id ).a , "F" );
  assert( t.findOne( id ).b , "G" );
  
  assert( t.findOne( id , { a : 1 } ).a , "H" );
  assert( ! t.findOne( id , { a : 1 } ).b , "I" );
  
  assert(t.validate().valid,"not valid");
  
  if ( lookAtDocumentMetrics ) {
      // ignore mongos
      nscannedEnd = db.serverStatus().metrics.queryExecutor.scanned
      // TokuMX TODO: why was this 16 and why is it now 14?
      assert.lte( nscannedStart + 14, nscannedEnd );
  }
  