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/* global emit *//** * Test dependencies. */
'use strict';
const start = require('./common');
const assert = require('assert');const random = require('./util').random;
const mongoose = start.mongoose;const Schema = mongoose.Schema;const ObjectId = Schema.Types.ObjectId;
describe('model: mapreduce:', function() {  let Comments;  let BlogPost;  let db;
  before(function() {    Comments = new Schema();
    Comments.add({      title: String,      date: Date,      body: String,      comments: [Comments]    });
    BlogPost = new Schema({      title: String,      author: String,      slug: String,      date: Date,      meta: {        date: Date,        visitors: Number      },      published: Boolean,      mixed: {},      numbers: [Number],      owners: [ObjectId],      comments: [Comments]    });
    db = start();  });
  after(async function() {    await db.close();  });
  beforeEach(function() {    db.deleteModel(/.*/);  });
  it('works', async function() {    const MR = db.model('MapReduce', BlogPost);
    const id = new mongoose.Types.ObjectId();    const authors = 'aaron guillermo brian nathan'.split(' ');    const num = 10;    const docs = [];    for (let i = 0; i < num; ++i) {      docs.push({ author: authors[i % authors.length], owners: [id], published: true });    }
    const insertedDocs = await MR.create(docs);
    const magicID = insertedDocs[1]._id;
    const o1 = {      map: 'function() { emit(this.author, 1); }',      reduce: function(k, vals) {        return vals.length;      }    };
    const { results: ret, stats } = await MR.mapReduce(o1);

    assert.ok(Array.isArray(ret));    assert.ok(stats);    ret.forEach(function(res) {      if (res._id === 'aaron') {        assert.equal(res.value, 3);      }      if (res._id === 'guillermo') {        assert.equal(res.value, 3);      }      if (res._id === 'brian') {        assert.equal(res.value, 2);      }      if (res._id === 'nathan') {        assert.equal(res.value, 2);      }    });
    const o2 = {      map: function() {        emit(this.author, 1);      },      reduce: function(k, vals) {        return vals.length;      },      query: { author: 'aaron', published: 1, owners: id }    };
    const res2 = await MR.mapReduce(o2);
    const ret2 = res2.results;    const stats2 = res2.stats;
    assert.ok(Array.isArray(ret2));    assert.equal(ret2.length, 1);    assert.equal(ret2[0]._id, 'aaron');    assert.equal(ret2[0].value, 3);    assert.ok(stats2);
    const o3 = {      map: function() {        emit(this.author, { own: magicID });      },      scope: { magicID: magicID },      reduce: function(k, vals) {        return { own: vals[0].own, count: vals.length };      },      out: { replace: '_mapreduce_test_' + random() }    };
    const res3 = await MR.mapReduce(o3);
    const model = res3.model;
    // ret is a model    assert.equal(typeof model.findOne, 'function');    assert.equal(typeof model.mapReduce, 'function');
    // queries work    const docs3 = await model.where('value.count').gt(1).sort({ _id: 1 }).exec();
    assert.equal(docs3[0]._id, 'aaron');    assert.equal(docs3[1]._id, 'brian');    assert.equal(docs3[2]._id, 'guillermo');    assert.equal(docs3[3]._id, 'nathan');
    // update casting works    const doc2 = await model.findOneAndUpdate({ _id: 'aaron' }, { published: true }, { new: true });
    assert.ok(doc2);    assert.equal(doc2._id, 'aaron');    assert.equal(doc2.published, true);
    // ad-hoc population works    const doc3 = await model      .findOne({ _id: 'aaron' })      .populate({ path: 'value.own', model: 'MapReduce', strictPopulate: false })      .exec();
    assert.equal(doc3.value.own.author, 'guillermo');  });
  it('withholds stats with false verbosity', async function() {    const MR = db.model('MapReduce', BlogPost);
    const o = {      map: function() {      },      reduce: function() {        return 'test';      },      verbose: false    };
    assert.deepEqual(await MR.mapReduce(o), []);    assert.equal(typeof stats, 'undefined');  });
  describe('promises (gh-1628)', function() {    it('are returned', function() {      const MR = db.model('MapReduce', BlogPost);
      const o = {        map: function() {        },        reduce: function() {          return 'test';        }      };
      const promise = MR.mapReduce(o);      assert.ok(promise instanceof mongoose.Promise);    });  });
  describe('with promises', function() {    let MR;    let db;    let magicID;    let id;    const docs = [];
    before(async function() {      db = start();      MR = db.model('MapReduce', BlogPost);
      id = new mongoose.Types.ObjectId();      const authors = 'aaron guillermo brian nathan'.split(' ');      const num = 10;      for (let i = 0; i < num; ++i) {        docs.push({ author: authors[i % authors.length], owners: [id], published: true });      }
      const [b] = await MR.create(docs);      magicID = b._id;    });
    after(async function() {      await db.close();    });
    it('works', function() {      const o = {        map: function() {          emit(this.author, 1);        },        reduce: function(k, vals) {          return vals.length;        }      };
      return MR.mapReduce(o).then(function(res) {        const ret = res.results;        assert.ok(Array.isArray(ret));        ret.forEach(function(res) {          if (res._id === 'aaron') {            assert.equal(res.value, 6);          }          if (res._id === 'guillermo') {            assert.equal(res.value, 6);          }          if (res._id === 'brian') {            assert.equal(res.value, 4);          }          if (res._id === 'nathan') {            assert.equal(res.value, 4);          }        });      });    });
    it('works with model', function() {      const o = {        map: function() {          emit(this.author, { own: magicID });        },        scope: { magicID: magicID },        reduce: function(k, vals) {          return { own: vals[0].own, count: vals.length };        },        out: { replace: '_mapreduce_test_' + random() }      };
      return MR.mapReduce(o).        then(function(res) {          const ret = res.model;          // ret is a model          assert.ok(!Array.isArray(ret));          assert.equal(typeof ret.findOne, 'function');          assert.equal(typeof ret.mapReduce, 'function');
          // queries work          return ret.where('value.count').gt(1).sort({ _id: 1 });        }).        then(function(docs) {          assert.equal(docs[0]._id, 'aaron');          assert.equal(docs[1]._id, 'brian');          assert.equal(docs[2]._id, 'guillermo');          assert.equal(docs[3]._id, 'nathan');        });    });  });
  it('withholds stats with false verbosity using then', async function() {    const MR = db.model('MapReduce', BlogPost);
    const o = {      map: function() {      },      reduce: function() {        return 'test';      },      verbose: false    };
    const { stats } = await MR.mapReduce(o);    assert.equal(typeof stats, 'undefined');  });});