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// Tests that the map function can access state of the 'this' object using both the '.x' and ["x"]
// syntax.
// The test runs commands that are not allowed with security token: mapReduce.
// @tags: [
// not_allowed_with_security_token,
// # mapReduce does not support afterClusterTime.
// does_not_support_causal_consistency,
// does_not_support_stepdowns,
// uses_map_reduce_with_temp_collections,
// # Uses mapReduce command.
// requires_scripting,
// ]
(function() {
"use strict";
load("jstests/aggregation/extras/utils.js"); // For resultsEq.
const coll = db.mr_use_this_object;
coll.drop();
const outputColl = db.mr_use_this_object_out;
outputColl.drop();
assert.commandWorked(coll.insert([
{partner: 1, visits: 9},
{partner: 2, visits: 9},
{partner: 1, visits: 11},
{partner: 1, visits: 30},
{partner: 2, visits: 41},
{partner: 2, visits: 41}
]));
let mapper = function() {
emit(this.partner, {stats: [this.visits]});
};
const reducer = function(k, v) {
let stats = [];
let total = 0;
for (let i = 0; i < v.length; i++) {
for (let j in v[i].stats) {
stats.push(v[i].stats[j]);
total += v[i].stats[j];
}
}
return {stats: stats, total: total};
};
assert.commandWorked(coll.mapReduce(mapper, reducer, {out: {merge: outputColl.getName()}}));
let resultAsObj = outputColl.convertToSingleObject("value");
assert.eq(2,
Object.keySet(resultAsObj).length,
`Expected 2 keys ("1" and "2") in object ${tojson(resultAsObj)}`);
// Use resultsEq() to avoid any assumptions about order.
assert(resultsEq([9, 11, 30], resultAsObj["1"].stats));
assert(resultsEq([9, 41, 41], resultAsObj["2"].stats));
assert(outputColl.drop());
mapper = function() {
let x = "partner";
let y = "visits";
emit(this[x], {stats: [this[y]]});
};
assert.commandWorked(coll.mapReduce(mapper, reducer, {out: {merge: outputColl.getName()}}));
resultAsObj = outputColl.convertToSingleObject("value");
assert.eq(2,
Object.keySet(resultAsObj).length,
`Expected 2 keys ("1" and "2") in object ${tojson(resultAsObj)}`);
// Use resultsEq() to avoid any assumptions about order.
assert(resultsEq([9, 11, 30], resultAsObj["1"].stats));
assert(resultsEq([9, 41, 41], resultAsObj["2"].stats));
}());
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