1 files changed, 13 insertions, 0 deletions
diff --git a/jstests/core/index/indexf.js b/jstests/core/index/indexf.js
new file mode 100644
index 00000000000..37c27967229
--- /dev/null
+++ b/jstests/core/index/indexf.js
@@ -0,0 +1,13 @@
+
+t = db.indexf;
+t.drop();
+
+t.createIndex({x: 1});
+
+t.save({x: 2});
+t.save({y: 3});
+t.save({x: 4});
+
+assert.eq(2, t.findOne({x: 2}).x, "A1");
+assert.eq(3, t.findOne({x: null}).y, "A2");
+assert.eq(4, t.findOne({x: 4}).x, "A3");