// SERVER-1735 $type:10 matches null value, not missing value.

t = db.jstests_type2;
t.drop();

t.save({a: null});
t.save({});
t.save({a: 'a'});

function test() {
    assert.eq(2, t.count({a: null}));
    assert.eq(1, t.count({a: {$type: 10}}));
    assert.eq(2, t.count({a: {$exists: true}}));
    assert.eq(1, t.count({a: {$exists: false}}));
}

test();
t.ensureIndex({a: 1});
test();