1 files changed, 16 insertions, 0 deletions
diff --git a/jstests/indexz.js b/jstests/indexz.js
new file mode 100644
index 00000000000..2e17a90acc7
--- /dev/null
+++ b/jstests/indexz.js
@@ -0,0 +1,16 @@
+// Check that optimal query plans do not contain empty but unindexed ranges.
+
+t = db.jstests_indexz;
+t.drop();
+
+t.ensureIndex( {a:1} );
+t.ensureIndex( {a:1,b:1} );
+
+t.save( {a:1,b:[1,3]} );
+
+// The plan for single key index {a:1} is not marked optimal because a constraint exists on field
+// {b:1}.
+explain = t.find( {a:1,b:{$gt:2,$lt:2}} ).explain(true);
+assert.eq( 'BtreeCursor a_1_b_1', explain.cursor );
+assert.eq( 1, explain.allPlans.length );
+