t = db.getCollection("where2");
t.drop();

t.save({a: 1});
t.save({a: 2});
t.save({a: 3});

assert.eq(1, t.find({$where: "this.a == 2"}).toArray().length, "A");
assert.eq(1, t.find({$where: "\nthis.a == 2"}).toArray().length, "B");