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/**
* Performance tests for removing ojects
*/
var removals = 100;
var size = 500000;
var collection_name = "remove_test";
var msg = "Hello from remove test";
function testSetup(dbConn) {
var t = dbConn[collection_name];
t.drop();
t.ensureIndex({num: 1});
for (var i = 0; i < size; i++) {
t.save({num: i, msg: msg});
}
}
function between(low, high, val, msg) {
assert(low < val, msg);
assert(val < high, msg);
}
/**
* Compares difference of removing objects from a collection if only includes
* field that's indexed, vs w/ additional other fields
*
* @param dbConn
*/
function testRemoveWithMultiField(dbConn) {
var results = {};
var t = dbConn[collection_name];
testSetup(dbConn);
t.remove({num: 0});
results.indexOnly = Date.timeFunc(function() {
for (var i = 1; i < removals; i++) {
t.remove({num: i});
}
t.findOne();
});
testSetup(dbConn);
t.remove({num: 0, msg: msg});
results.withAnother = Date.timeFunc(function() {
for (var i = 1; i < removals; i++) {
t.remove({num: i, msg: msg});
}
t.findOne();
});
between(0.65,
1.35,
(results.indexOnly / results.withAnother),
"indexOnly / withAnother (" + results.indexOnly + " / " + results.withAnother +
" ) = " + results.indexOnly / results.withAnother + " not in [0.65, 1.35]");
}
testRemoveWithMultiField(db);
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