// @tags: [
//      # 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.
//      assumes_unsharded_collection,
//      # The {$set: {"a.1500000": 1}} update takes multiple seconds to execute.
//      operations_longer_than_stepdown_interval,
// ]

// test $set with array indicies

t = db.jstests_set7;
var res;

t.drop();

t.save({a: [0, 1, 2, 3]});
t.update({}, {$set: {"a.0": 2}});
assert.eq([2, 1, 2, 3], t.findOne().a);

t.update({}, {$set: {"a.4": 5}});
assert.eq([2, 1, 2, 3, 5], t.findOne().a);

t.update({}, {$set: {"a.9": 9}});
assert.eq([2, 1, 2, 3, 5, null, null, null, null, 9], t.findOne().a);

t.drop();
t.save({a: [0, 1, 2, 3]});
t.update({}, {$set: {"a.9": 9, "a.7": 7}});
assert.eq([0, 1, 2, 3, null, null, null, 7, null, 9], t.findOne().a);

t.drop();
t.save({a: [0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10]});
t.update({}, {$set: {"a.11": 11}});
assert.eq([0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11], t.findOne().a);

t.drop();
t.save({});
t.update({}, {$set: {"a.0": 4}});
assert.eq({"0": 4}, t.findOne().a);

t.drop();
t.update({"a.0": 4}, {$set: {b: 1}}, true);
assert.eq({"0": 4}, t.findOne().a);

t.drop();
t.save({a: []});
res = t.update({}, {$set: {"a.f": 1}});
assert.writeError(res);
assert.eq([], t.findOne().a);

// Test requiring proper ordering of multiple mods.
t.drop();
t.save({a: [0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10]});
t.update({}, {$set: {"a.11": 11, "a.2": -2}});
assert.eq([0, 1, -2, 3, 4, 5, 6, 7, 8, 9, 10, 11], t.findOne().a);

// Test multiple updates to a non-existent array element.
t.drop();
assert.commandWorked(t.insert({a: []}));
assert.commandWorked(t.update({}, {$set: {"a.2.b": 1, "a.2.c": 1}}));
assert.docEq({a: [null, null, {b: 1, c: 1}]}, t.findOne({}, {_id: 0}));

// Test upsert case
t.drop();
t.update({a: [0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10]}, {$set: {"a.11": 11}}, true);
assert.eq([0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11], t.findOne().a);

// SERVER-3750
t.drop();
t.save({a: []});
res = t.update({}, {$set: {"a.1500000": 1}});  // current limit
assert.commandWorked(res);

t.drop();
t.save({a: []});
res = t.update({}, {$set: {"a.1500001": 1}});  // 1 over limit
assert.writeError(res);

t.drop();
t.save({a: []});
res = t.update({}, {$set: {"a.1000000000": 1}});  // way over limit
assert.writeError(res);