1 files changed, 38 insertions, 0 deletions
diff --git a/jstests/sort6.js b/jstests/sort6.js
new file mode 100644
index 00000000000..027ba7a01f5
--- /dev/null
+++ b/jstests/sort6.js
@@ -0,0 +1,38 @@
+
+t = db.sort6;
+
+function get( x ){
+    return t.find().sort( { c : x } ).map( function(z){ return z._id; } );
+}
+
+// part 1
+t.drop();
+
+t.insert({_id:1,c:null})
+t.insert({_id:2,c:1})
+t.insert({_id:3,c:2})
+
+
+assert.eq( [3,2,1] ,  get( -1 ) , "A1"  ) // SERVER-635
+assert.eq( [1,2,3] , get( 1 ) , "A2" )
+
+t.ensureIndex( { c : 1 } );
+
+assert.eq( [3,2,1] ,  get( -1 ) , "B1"  )
+assert.eq( [1,2,3] , get( 1 ) , "B2" )
+
+
+// part 2
+t.drop();
+
+t.insert({_id:1})
+t.insert({_id:2,c:1})
+t.insert({_id:3,c:2})
+
+assert.eq( [3,2,1] ,  get( -1 ) , "C1"  ) // SERVER-635
+assert.eq( [1,2,3] , get( 1 ) , "C2" )
+
+t.ensureIndex( { c : 1 } );
+
+assert.eq( [3,2,1] ,  get( -1 ) , "D1"  )
+assert.eq( [1,2,3] , get( 1 ) , "X2" )