SERVER-12127 migrate js tests to jscore suite when not related to writes

Temporarily put back jstest in order not to lose test coverage

1 files changed, 18 insertions, 0 deletions

diff --git a/jstests/coveredIndex2.js b/jstests/coveredIndex2.js
new file mode 100644
index 00000000000..56a23f43211
--- /dev/null
+++ b/jstests/coveredIndex2.js
@@ -0,0 +1,18 @@
+t = db["jstests_coveredIndex2"];
+t.drop();
+
+t.save({a: 1})
+t.save({a: 2})
+assert.eq( t.findOne({a: 1}).a, 1, "Cannot find right record" );
+assert.eq( t.count(), 2, "Not right length" );
+
+// use simple index
+t.ensureIndex({a: 1});
+assert.eq( t.find({a:1}).explain().indexOnly, false, "Find using covered index but all fields are returned");
+assert.eq( t.find({a:1}, {a: 1}).explain().indexOnly, false, "Find using covered index but _id is returned");
+assert.eq( t.find({a:1}, {a: 1, _id: 0}).explain().indexOnly, true, "Find is not using covered index");
+
+// add multikey
+t.save({a:[3,4]})
+assert.eq( t.find({a:1}, {a: 1, _id: 0}).explain().indexOnly, false, "Find is using covered index even after multikey insert");
+