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// Test various cursor behaviors
var t = db.geo_s2getmmm
t.drop();
t.ensureIndex({geo: "2dsphere"});
Random.setRandomSeed();
var random = Random.rand;
/*
* To test that getmore is working within 2dsphere index.
* We insert a bunch of points, get a cursor, and fetch some
* of the points. Then we insert a bunch more points, and
* finally fetch a bunch more.
* If the final fetches work successfully, then getmore should
* be working
*/
function sign() { return random() > 0.5 ? 1 : -1; }
function insertRandomPoints(num, minDist, maxDist){
for(var i = 0; i < num; i++){
var lat = sign() * (minDist + random() * (maxDist - minDist));
var lng = sign() * (minDist + random() * (maxDist - minDist));
var point = { geo: { type: "Point", coordinates: [lng, lat] } };
t.insert(point);
assert(!db.getLastError());
}
}
var initialPointCount = 200
var smallBit = 10
var secondPointCount = 100
// Insert points between 0.01 and 1.0 away.
insertRandomPoints(initialPointCount, 0.01, 1.0);
var cursor = t.find({geo: {$geoNear : {$geometry: {type: "Point", coordinates: [0.0, 0.0]}}}}).batchSize(4);
assert.eq(cursor.count(), initialPointCount);
for(var j = 0; j < smallBit; j++){
assert(cursor.hasNext());
cursor.next();
}
// We looked at (initialPointCount - smallBit) points, should be more.
assert(cursor.hasNext())
// Insert points outside of the shell we've tested thus far
insertRandomPoints(secondPointCount, 2.01, 3.0);
assert.eq(cursor.count(), initialPointCount + secondPointCount)
for(var k = 0; k < initialPointCount + secondPointCount - smallBit; k++){
assert(cursor.hasNext())
var tmpPoint = cursor.next();
}
// Shouldn't be any more points to look at now.
assert(!cursor.hasNext())
var someLimit = 23;
// Make sure limit does something.
cursor = t.find({geo: {$geoNear : {$geometry: {type: "Point", coordinates: [0.0, 0.0]}}}}).limit(someLimit)
// Count doesn't work here -- ignores limit/skip, so we use itcount.
assert.eq(cursor.itcount(), someLimit)
// Make sure skip works by skipping some stuff ourselves.
var someSkip = 3;
cursor = t.find({geo: {$geoNear : {$geometry: {type: "Point", coordinates: [0.0, 0.0]}}}}).limit(someLimit + someSkip)
for (var i = 0; i < someSkip; ++i) { cursor.next(); }
var cursor2 = t.find({geo: {$geoNear : {$geometry: {type: "Point", coordinates: [0.0, 0.0]}}}}).skip(someSkip).limit(someLimit)
while (cursor.hasNext()) {
assert(cursor2.hasNext());
assert.eq(cursor.next(), cursor2.next());
}
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