// Check sorting of array sub field SERVER-480.

t = db.jstests_sort7;
t.drop();

// Compare indexed and unindexed sort order for an array embedded field.

t.save({a: [{x: 2}]});
t.save({a: [{x: 1}]});
t.save({a: [{x: 3}]});
unindexed = t.find().sort({"a.x": 1}).toArray();
t.ensureIndex({"a.x": 1});
indexed = t.find().sort({"a.x": 1}).hint({"a.x": 1}).toArray();
assert.eq(unindexed, indexed);

// Now check when there are two objects in the array.

t.remove({});
t.save({a: [{x: 2}, {x: 3}]});
t.save({a: [{x: 1}, {x: 4}]});
t.save({a: [{x: 3}, {x: 2}]});
unindexed = t.find().sort({"a.x": 1}).toArray();
t.ensureIndex({"a.x": 1});
indexed = t.find().sort({"a.x": 1}).hint({"a.x": 1}).toArray();
assert.eq(unindexed, indexed);