mongo/jstests/core/geo_array1.js

// Make sure many locations in one doc works, in the form of an array

t = db.geoarray1;
function test(index) {
    t.drop();

    var locObj = [];
    // Add locations everywhere
    for (var i = 0; i < 10; i++) {
        for (var j = 0; j < 10; j++) {
            if (j % 2 == 0)
                locObj.push([i, j]);
            else
                locObj.push({x: i, y: j});
        }
    }

    // Add docs with all these locations
    for (var i = 0; i < 300; i++) {
        t.insert({loc: locObj});
    }

    if (index) {
        t.ensureIndex({loc: "2d"});
    }

    // Pull them back
    for (var i = 0; i < 10; i++) {
        for (var j = 0; j < 10; j++) {
            assert.eq(
                300,
                t.find({loc: {$within: {$box: [[i - 0.5, j - 0.5], [i + 0.5, j + 0.5]]}}}).count());
        }
    }
}

test(true);
test(false);