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// Test partial indexes with commands that don't use explain. These commands are tested against
// mongod with the --notablescan flag set, so that they fail if the index is not used.
load("jstests/aggregation/extras/utils.js"); // For resultsEq
(function() {
"use strict";
var runner = MongoRunner.runMongod({setParameter: "notablescan=1"});
const db = runner.getDB("test");
var coll = db.index_partial_no_explain_cmds;
var ret;
coll.drop();
db.getCollection("mrOutput").drop();
assert.commandWorked(coll.createIndex({x: 1}, {partialFilterExpression: {a: 1}}));
assert.commandWorked(coll.insert({_id: 1, x: 5, a: 2})); // Not in index.
assert.commandWorked(coll.insert({_id: 2, x: 6, a: 1})); // In index.
// Verify we will throw if the partial index can't be used.
assert.throws(function() {
coll.find({x: {$gt: 1}, a: 2}).itcount();
});
//
// Test mapReduce.
//
var mapFunc = function() {
emit(this._id, 1);
};
var reduceFunc = function(keyId, countArray) {
return Array.sum(countArray);
};
assert.commandWorked(
coll.mapReduce(mapFunc, reduceFunc, {out: "mrOutput", query: {x: {$gt: 1}, a: 1}}));
assert(resultsEq([{"_id": 2, "value": 1}], db.getCollection("mrOutput").find().toArray()));
//
// Test distinct.
//
ret = coll.distinct("a", {x: {$gt: 1}, a: 1});
assert.eq(1, ret.length);
ret = coll.distinct("x", {x: {$gt: 1}, a: 1});
assert.eq(1, ret.length);
assert.throws(function() {
printjson(coll.distinct("a", {a: 0}));
});
assert.throws(function() {
printjson(coll.distinct("x", {a: 0}));
});
// SERVER-19511 regression test: distinct with no query predicate should return the correct
// number of results. This query should not be allowed to use the partial index, so it should
// use a collection scan instead. Although this test enables --notablescan, this does not cause
// operations to fail if they have no query predicate.
ret = coll.distinct("x");
assert.eq(2, ret.length);
MongoRunner.stopMongod(runner);
})();
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