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// Licensed under the Apache License, Version 2.0 (the "License"); you may not
// use this file except in compliance with the License. You may obtain a copy of
// the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
// WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
// License for the specific language governing permissions and limitations under
// the License.
couchTests.reduce_builtin = function(debug) {
var db = new CouchDB("test_suite_db", {"X-Couch-Full-Commit":"false"});
db.deleteDb();
db.createDb();
if (debug) debugger;
var numDocs = 500;
var docs = makeDocs(1,numDocs + 1);
db.bulkSave(docs);
var summate = function(N) {return (N+1)*N/2;};
var sumsqr = function(N) {
var acc = 0;
for (var i=1; i<=N; ++i) {
acc += i*i;
}
return acc;
};
// this is the same test as the reduce.js test
// only we'll let CouchDB run reduce in Erlang
var map = function (doc) {
emit(doc.integer, doc.integer);
emit(doc.integer, doc.integer);
};
var result = db.query(map, "_sum");
T(result.rows[0].value == 2*summate(numDocs));
result = db.query(map, "_count");
T(result.rows[0].value == 1000);
result = db.query(map, "_stats");
T(result.rows[0].value.sum == 2*summate(numDocs));
T(result.rows[0].value.count == 1000);
T(result.rows[0].value.min == 1);
T(result.rows[0].value.max == 500);
T(result.rows[0].value.sumsqr == 2*sumsqr(numDocs));
result = db.query(map, "_sum", {startkey: 4, endkey: 4});
T(result.rows[0].value == 8);
result = db.query(map, "_count", {startkey: 4, endkey: 4});
T(result.rows[0].value == 2);
result = db.query(map, "_sum", {startkey: 4, endkey: 5});
T(result.rows[0].value == 18);
result = db.query(map, "_count", {startkey: 4, endkey: 5});
T(result.rows[0].value == 4);
result = db.query(map, "_sum", {startkey: 4, endkey: 6});
T(result.rows[0].value == 30);
result = db.query(map, "_count", {startkey: 4, endkey: 6});
T(result.rows[0].value == 6);
result = db.query(map, "_sum", {group:true, limit:3});
T(result.rows[0].value == 2);
T(result.rows[1].value == 4);
T(result.rows[2].value == 6);
for(var i=1; i<numDocs/2; i+=30) {
result = db.query(map, "_sum", {startkey: i, endkey: numDocs - i});
T(result.rows[0].value == 2*(summate(numDocs-i) - summate(i-1)));
}
// test for trailing characters after builtin functions, desired behaviour
// is to disregard any trailing characters
// I think the behavior should be a prefix test, so that even "_statsorama"
// or "_stats\nare\awesome" should work just as "_stats" does. - JChris
var trailing = ["\u000a", "orama", "\nare\nawesome", " ", " \n "];
for(var i=0; i < trailing.length; i++) {
result = db.query(map, "_sum" + trailing[i]);
T(result.rows[0].value == 2*summate(numDocs));
result = db.query(map, "_count" + trailing[i]);
T(result.rows[0].value == 1000);
result = db.query(map, "_stats" + trailing[i]);
T(result.rows[0].value.sum == 2*summate(numDocs));
T(result.rows[0].value.count == 1000);
T(result.rows[0].value.min == 1);
T(result.rows[0].value.max == 500);
T(result.rows[0].value.sumsqr == 2*sumsqr(numDocs));
}
db.deleteDb();
db.createDb();
for(var i=1; i <= 5; i++) {
for(var j=0; j < 10; j++) {
// these docs are in the order of the keys collation, for clarity
var docs = [];
docs.push({keys:["a"]});
docs.push({keys:["a"]});
docs.push({keys:["a", "b"]});
docs.push({keys:["a", "b"]});
docs.push({keys:["a", "b", "c"]});
docs.push({keys:["a", "b", "d"]});
docs.push({keys:["a", "c", "d"]});
docs.push({keys:["d"]});
docs.push({keys:["d", "a"]});
docs.push({keys:["d", "b"]});
docs.push({keys:["d", "c"]});
db.bulkSave(docs);
T(db.info().doc_count == ((i - 1) * 10 * 11) + ((j + 1) * 11));
}
map = function (doc) { emit(doc.keys, 1); };
// with emitted values being 1, count should be the same as sum
var builtins = ["_sum", "_count"];
for (var b=0; b < builtins.length; b++) {
var fun = builtins[b];
var results = db.query(map, fun, {group:true});
//group by exact key match
T(equals(results.rows[0], {key:["a"],value:20*i}));
T(equals(results.rows[1], {key:["a","b"],value:20*i}));
T(equals(results.rows[2], {key:["a", "b", "c"],value:10*i}));
T(equals(results.rows[3], {key:["a", "b", "d"],value:10*i}));
// test to make sure group reduce and limit params provide valid json
var results = db.query(map, fun, {group: true, limit: 2});
T(equals(results.rows[0], {key: ["a"], value: 20*i}));
T(equals(results.rows.length, 2));
//group by the first element in the key array
var results = db.query(map, fun, {group_level:1});
T(equals(results.rows[0], {key:["a"],value:70*i}));
T(equals(results.rows[1], {key:["d"],value:40*i}));
//group by the first 2 elements in the key array
var results = db.query(map, fun, {group_level:2});
T(equals(results.rows[0], {key:["a"],value:20*i}));
T(equals(results.rows[1], {key:["a","b"],value:40*i}));
T(equals(results.rows[2], {key:["a","c"],value:10*i}));
T(equals(results.rows[3], {key:["d"],value:10*i}));
T(equals(results.rows[4], {key:["d","a"],value:10*i}));
T(equals(results.rows[5], {key:["d","b"],value:10*i}));
T(equals(results.rows[6], {key:["d","c"],value:10*i}));
};
map = function (doc) { emit(doc.keys, [1, 1]); };
var results = db.query(map, "_sum", {group:true});
T(equals(results.rows[0], {key:["a"],value:[20*i,20*i]}));
T(equals(results.rows[1], {key:["a","b"],value:[20*i,20*i]}));
T(equals(results.rows[2], {key:["a", "b", "c"],value:[10*i,10*i]}));
T(equals(results.rows[3], {key:["a", "b", "d"],value:[10*i,10*i]}));
var results = db.query(map, "_sum", {group: true, limit: 2});
T(equals(results.rows[0], {key: ["a"], value: [20*i,20*i]}));
T(equals(results.rows.length, 2));
var results = db.query(map, "_sum", {group_level:1});
T(equals(results.rows[0], {key:["a"],value:[70*i,70*i]}));
T(equals(results.rows[1], {key:["d"],value:[40*i,40*i]}));
var results = db.query(map, "_sum", {group_level:2});
T(equals(results.rows[0], {key:["a"],value:[20*i,20*i]}));
T(equals(results.rows[1], {key:["a","b"],value:[40*i,40*i]}));
T(equals(results.rows[2], {key:["a","c"],value:[10*i,10*i]}));
T(equals(results.rows[3], {key:["d"],value:[10*i,10*i]}));
T(equals(results.rows[4], {key:["d","a"],value:[10*i,10*i]}));
T(equals(results.rows[5], {key:["d","b"],value:[10*i,10*i]}));
T(equals(results.rows[6], {key:["d","c"],value:[10*i,10*i]}));
}
}
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