mongo/jstests/core/geo_queryoptimizer.js

t = db.geo_qo1;
t.drop();

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

t.insert({'issue': 0});
t.insert({'issue': 1});
t.insert({'issue': 2});
t.insert({'issue': 2, 'loc': [30.12, -118]});
t.insert({'issue': 1, 'loc': [30.12, -118]});
t.insert({'issue': 0, 'loc': [30.12, -118]});

assert.eq(6, t.find().itcount(), "A1");

assert.eq(2, t.find({'issue': 0}).itcount(), "A2");

assert.eq(1, t.find({'issue': 0, 'loc': {$near: [30.12, -118]}}).itcount(), "A3");

assert.eq(2, t.find({'issue': 0}).itcount(), "B1");

assert.eq(6, t.find().itcount(), "B2");

assert.eq(2, t.find({'issue': 0}).itcount(), "B3");

assert.eq(1, t.find({'issue': 0, 'loc': {$near: [30.12, -118]}}).itcount(), "B4");