1 files changed, 30 insertions, 0 deletions
diff --git a/jstests/core/query/unset/unset2.js b/jstests/core/query/unset/unset2.js
new file mode 100644
index 00000000000..e120ae2b674
--- /dev/null
+++ b/jstests/core/query/unset/unset2.js
@@ -0,0 +1,30 @@
+// Cannot implicitly shard accessed collections because of following errmsg: A single
+// update/delete on a sharded collection must contain an exact match on _id or contain the shard
+// key.
+// @tags: [assumes_unsharded_collection]
+
+var res;
+
+t = db.unset2;
+t.drop();
+
+t.save({a: ["a", "b", "c", "d"]});
+t.update({}, {$unset: {"a.3": 1}});
+assert.eq(["a", "b", "c", null], t.findOne().a);
+t.update({}, {$unset: {"a.1": 1}});
+assert.eq(["a", null, "c", null], t.findOne().a);
+t.update({}, {$unset: {"a.0": 1}});
+assert.eq([null, null, "c", null], t.findOne().a);
+t.update({}, {$unset: {"a.4": 1}});
+assert.eq([null, null, "c", null], t.findOne().a);  // no change
+
+t.drop();
+t.save({a: ["a", "b", "c", "d", "e"]});
+t.update({}, {$unset: {"a.2": 1}, $set: {"a.3": 3, "a.4": 4, "a.5": 5}});
+assert.eq(["a", "b", null, 3, 4, 5], t.findOne().a);
+
+t.drop();
+t.save({a: ["a", "b", "c", "d", "e"]});
+res = t.update({}, {$unset: {"a.2": 1}, $set: {"a.2": 4}});
+assert.writeError(res);
+assert.eq(["a", "b", "c", "d", "e"], t.findOne().a);