mongo/jstests/core/multi.js

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

t.ensureIndex({a: 1});
t.save({a: [1, 2]});
assert.eq(1, t.find({a: {$gt: 0}}).count(), "A");
assert.eq(1, t.find({a: {$gt: 0}}).toArray().length, "B");

t.drop();
t.save({a: [[[1]]]});
assert.eq(0, t.find({a: 1}).count(), "C");
assert.eq(0, t.find({a: [1]}).count(), "D");
assert.eq(1, t.find({a: [[1]]}).count(), "E");
assert.eq(1, t.find({a: [[[1]]]}).count(), "F");

t.drop();
t.save({a: [1, 2]});
assert.eq(0, t.find({a: {$ne: 1}}).count(), "G");

t.drop();
t.save({a: [{b: 1}, {b: 2}]});
assert.eq(0, t.find({'a.b': {$ne: 1}}).count(), "H");

// TODO - run same tests with an index on a