var res;
t = db.updatea;
t.drop();

orig = {
    _id: 1,
    a: [{x: 1, y: 2}, {x: 10, y: 11}]
};

res = t.save(orig);
assert.writeOK(res);

// SERVER-181
res = t.update({}, {$set: {"a.0.x": 3}});
assert.writeOK(res);
orig.a[0].x = 3;
assert.eq(orig, t.findOne(), "A1");

res = t.update({}, {$set: {"a.1.z": 17}});
assert.writeOK(res);
orig.a[1].z = 17;
assert.eq(orig, t.findOne(), "A2");

// SERVER-273
res = t.update({}, {$unset: {"a.1.y": 1}});
assert.writeOK(res);
delete orig.a[1].y;
assert.eq(orig, t.findOne(), "A3");

// SERVER-333
t.drop();
orig = {
    _id: 1,
    comments: [{name: "blah", rate_up: 0, rate_ups: []}]
};
res = t.save(orig);
assert.writeOK(res);

res = t.update({}, {$inc: {"comments.0.rate_up": 1}, $push: {"comments.0.rate_ups": 99}});
assert.writeOK(res);
orig.comments[0].rate_up++;
orig.comments[0].rate_ups.push(99);
assert.eq(orig, t.findOne(), "B1");

t.drop();
orig = {
    _id: 1,
    a: []
};
for (i = 0; i < 12; i++)
    orig.a.push(i);

res = t.save(orig);
assert.writeOK(res);
assert.eq(orig, t.findOne(), "C1");

res = t.update({}, {$inc: {"a.0": 1}});
assert.writeOK(res);
orig.a[0]++;
assert.eq(orig, t.findOne(), "C2");

res = t.update({}, {$inc: {"a.10": 1}});
assert.writeOK(res);
orig.a[10]++;

// SERVER-3218
t.drop();
t.insert({"a": {"c00": 1}, 'c': 2});
res = t.update({"c": 2}, {'$inc': {'a.c000': 1}});
assert.writeOK(res);

assert.eq({"c00": 1, "c000": 1}, t.findOne().a, "D1");