text: import * as assert from 'assert';
  import sift from '..';
  var ObjectID = require('bson').ObjectID;
  
  describe(__filename + '#', function () {
  
  
    [
      // $eq
      [{$eq:5}, [5,'5', 6], [5]],
      ['5', [5,'5', 6], ['5']],
      [false, [false,'false', true], [false]],
      [true, [1, true], [true]],
      [0, [0,'0'], [0]],
      [null, [null], [null]],
      [void 0, [void 0, null], [void 0]],
      [1, [2,3,4,5], []],
      [1, [[1]], [[1]]],
      [new Date(1), [new Date(), new Date(1), new Date(2), new Date(3)], [new Date(1)]],
      [/^a/, ['a','ab','abc','b','bc'], ['a','ab','abc']],
  
      [function(b) { return b === 1; }, [1,2,3],[1]],
  
      [ObjectID('54dd5546b1d296a54d152e84'),[ObjectID(),ObjectID('54dd5546b1d296a54d152e84')],[ObjectID('54dd5546b1d296a54d152e84')]],
  
      // $ne
      [{$ne:5}, [5, '5', 6], ['5', 6]],
      [{$ne:'5'}, ['5', 6], [6]],
      [{$ne:false}, [false], []],
      [{$ne:void 0}, [false, 0, '0', void 0], [false, 0, '0']],
      [{$ne:/^a/}, ['a','ab','abc','b','bc'], ['b','bc']],
      [{$ne:1}, [[2],[1]], [[2]]],
      [{groups:{$ne:111}}, [{groups:[111,222,333,444]},{groups:[222,333,444]}],[{groups:[222,333,444]}]],
  
      // $lt
      [{$lt:5}, [3,4,5,6],[3,4]],
      [{$lt:'c'}, ['a','b','c'],['a','b']],
      [{$lt:null}, [-3,-4], []],
      [{$lt:new Date(3)}, [new Date(1), new Date(2), new Date(3)],[new Date(1), new Date(2)]],
  
      // $lte
      [{$lte:5}, [3,4,5,6],[3,4,5]],
      [{groups:{$lt:5}}, [{groups:[1,2,3,4]}, {groups:[7,8]}], [{groups:[1,2,3,4]}]],
  
      // $gt
      [{$gt:5}, [3,4,5,6],[6]],
      [{$gt:null}, [3,4], []],
      [{groups:{$gt:5}}, [{groups:[1,2,3,4]}, {groups:[7,8]}], [{groups:[7,8]}]],
  
      // $gte
      [{$gte:5}, [3,4,5,6],[5, 6]],
      [{groups:{$gte:5}}, [{groups:[1,2,3,4]}, {groups:[7,8]}], [{groups:[7,8]}]],
  
      // $mod
      [{$mod:[2,1]}, [1,2,3,4,5,6],[1,3,5]],
      [{groups:{$mod:[2,0]}}, [{groups:[1,2,3,4]}, {groups:[7,9]}], [{groups:[1,2,3,4]}]],
  
      // $exists
      [{$exists:false}, [0,false,void 0, null],[]],
      [{$exists:true}, [0,false,void 0, 1, {}],[0, false, void 0, 1, {}]],
      [{'a.b': {$exists: true}}, [{a: {b: 'exists'}}, {a: {c: 'does not exist'}}], [{a: {b: 'exists'}}]],
      [{field: { $exists: false }}, [{a: 1}, {a: 2, field: 5}, {a: 3, field: 0}, {a: 4, field: undefined}, {a: 5}],[{a: 1}, {a: 5}]],
  
      // $in
      // TODO - {$in:[Date]} doesn't work - make it work?
      [{$in:[0,false,1,'1']},[0,1,2,3,4,false],[0,1,false]],
      [{$in:[1,'1','2']},['1','2','3'],['1','2']],
      [{$in:[new Date(1)]},[new Date(1), new Date(2)],[new Date(1)]],
      [{'a.b.status':{'$in': [0]}}, [{'a':{'b':[{'status':0}]}},{'a':{'b':[{'status':2}]}}],[{'a':{'b':[{'status':0}]}}]],
      [{'a.b.status':{'$in': [0, 2]}}, [{'a':{'b':[{'status':0}]}},{'a':{'b':[{'status':2}]}}], [{'a':{'b':[{'status':0}]}},{'a':{'b':[{'status':2}]}}]],
      [{'x': {$in: [{$regex: '.*aaa.*'}, {$regex: '.*bbb.*'}]}}, [{'x': {'b': 'aaa'}}, {'x': 'bbb'}, {'x': 'ccc'}, {'x': 'aaa'}], [{'x': 'bbb'}, {'x': 'aaa'}]],
      [{'x': {$in: [/.*aaa.*/, /.*bbb.*/]}}, [{'x': {'b': 'aaa'}}, {'x': 'bbb'}, {'x': 'ccc'}, {'x': 'aaa'}], [{'x': 'bbb'}, {'x': 'aaa'}]],
  
      // $nin
      [{$nin:[0,false,1,'1']},[0,1,2,3,4,false],[2,3,4]],
      [{$nin:[1,'1','2']},['1','2','3'],['3']],
      [{$nin:[new Date(1)]},[new Date(1), new Date(2)],[new Date(2)]],
      [{'root.notDefined': {$nin: [1, 2, 3]}}, [{'root': {'defined': 1337}}], [{'root': {'defined': 1337}}]],
      [{'root.notDefined': {$nin: [1, 2, 3, null]}}, [{'root': {'defined': 1337}}], []],
      [{'x': {$nin: [{$regex: '.*aaa.*'}, {$regex: '.*bbb.*'}]}}, [{'x': {'b': 'aaa'}}, {'x': 'bbb'}, {'x': 'ccc'}, {'x': 'aaa'}], [{'x': {'b': 'aaa'}},{'x': 'ccc'}]],
      [{'x': {$nin: [/.*aaa.*/, /.*bbb.*/]}}, [{'x': {'b': 'aaa'}}, {'x': 'bbb'}, {'x': 'ccc'}, {'x': 'aaa'}], [{'x': {'b': 'aaa'}},{'x': 'ccc'}]],
  
      // $not
      [{$not:false},[0,false],[0]],
      [{$not:0},[0, false, 1, 2, 3],[false, 1, 2, 3]],
      [{$not:{$in:[1,2,3]}},[1,2,3,4,5,6],[4,5,6]], // with expressions
  
      // $type
      [{$type:Date}, [0,new Date(1)],[new Date(1)]],
      [{$type:Number}, [0,false,1],[0,1]],
      [{$type:Boolean}, [0,false, void 0],[false]],
      [{$type:String}, ['1',1,false],['1']],
  
      // $all
      [{$all:[1,2,3]},[[1,2,3,4],[1,2,4]],[[1,2,3,4]]],
      [{$all:[0,false]},[[0,1,2],[0,false],['0','false'],void 0],[[0,false]]],
      [{$all:['1']},[[1]],[]],
      [{$all:[new Date(1),new Date(2)]},[[new Date(1), new Date(2)],[new Date(1)]],[[new Date(1), new Date(2)]]],
  
      // $size
      [{$size:3},['123',[1,2,3],'1'],['123',[1,2,3]]],
      [{$size:1},['123',[1,2,3],'1', void 0],['1']],
  
      // $or
      [{$or:[1,2,3]},[1,2,3,4],[1,2,3]],
      [{$or:[{$ne:1},2]},[1,2,3,4,5,6],[2,3,4,5,6]],
  
      // $nor
      [{$nor:[1,2,3]},[1,2,3,4],[4]],
      [{$nor:[{$ne:1},2]},[1,2,3,4,5,6],[1]],
  
      // $and
      [{$and:[{$gt:1},{$lt:4}]},[1,2,3,4],[2,3]],
      [{$and: [{field: {$not: {$type: String}}}, {field: {$ne: null}}]}, [{a: 1, field: 1}, {a: 2, field: '2'}], [{a: 1, field: 1}]],
  
      // $regex
      [{$regex:'^a'},['a','ab','abc','bc','bcd'],['a','ab','abc']],
      [{a:{$regex:'b|c'}}, [{a:['b']},{a:['c']},{a:'c'},{a:'d'}], [{a:['b']},{a:['c']},{a:'c'}]],
      [{ folder: { $regex:'^[0-9]{4}$' }}, [{ folder:['1234','3212'] }], [{ folder:['1234','3212'] }]],
  
      // $options
      [{$regex:'^a', $options: 'i'},['a','Ab','abc','bc','bcd'],['a','Ab','abc']],
      [{'text':{'$regex':'.*lis.*','$options':'i'}}, [{text:['Bob','Melissa','Joe','Sherry']}], [{text:['Bob','Melissa','Joe','Sherry']}]],
  
      // undefined
      [{$regex:'a'},[undefined, null, true, false, 0, 'aa'],['aa']],
      [/a/,[undefined, null, true, false, 0, 'aa'],['aa']],
      [/.+/,[undefined, null, true, false, 0, 'aa', {}],['aa']],
  
      // Multiple conditions on an undefined root
      [{'a.b': {$exists: true, $nin: [null]}}, [{a: {b: 'exists'}}, {a: {c: 'does not exist'}}], [{a: {b: 'exists'}}]],
  
      // $where
      [{$where:function () { return this.v === 1 }}, [{v:1},{v:2}],[{v:1}]],
      [{$where:'this.v === 1'}, [{v:1},{v:2}],[{v:1}]],
      [{$where:'obj.v === 1'}, [{v:1},{v:2}],[{v:1}]],
  
      // $elemMatch
      //{'person': {'$elemMatch': {'gender': 'male', 'age': {'$lt': 30}}}}
      [
        {a:{$elemMatch:{b:1,c:2}}},
        [{a:{b:1,c:2}},{a:[{b:1,c:2,d:3}]},{a:{b:2,c:3}}], [{a:{b:1,c:2}},{a:[{b:1,c:2,d:3}]}]
      ],
      [{a:{$elemMatch:{b:2,c:{$gt:2}}}}, [{a:{b:1,c:2}},{a:{b:1,c:2,d:3}},[{a:{b:2,c:3}}]], [[{a:{b:2,c:3}}]]],
      [
        {tags: {$all: [{$elemMatch: {a: 1}}]}},
        [{tags: [{a: 1}]}, {tags: [{a: 1}, {b: 1}]}], [{tags: [{a: 1}]}, {tags: [{a: 1}, {b: 1}]}]
      ],
  
      // dot-notation
      [
        {'a.b': /c/ },
        [{a:{b:'c'}}, {a:{b:'cd'}}, {'a.b':'c'},{a:{b:'e'}}],
        [{a:{b:'c'}}, {a:{b:'cd'}}]
      ],
      [
        {'foo.0': 'baz' },
        [{foo:['bar', 'baz']}, {foo:['baz', 'bar']}],
        [{foo:['baz', 'bar']}]
      ],
      [
        {'foo.0.name': 'baz' },
        [{foo:[{ name: 'bar' }, { name: 'baz' }]}, {foo:[{ name: 'baz' }, { name: 'bar' }]}],
        [{foo:[{ name: 'baz' }, { name: 'bar' }]}]
      ],
  
      // object.toString() tests
      [
        { $in: [{ toString: function(){ return 'a'; }}]},
        [{toString: function(){ return 'a'; }}, {toString: function(){ return 'b' }}],
        [{toString: function(){ return 'a'; }}]
      ],
      [
        { $in: [{}]},
        [{}, {}],
        []
      ],
  
      // various comparisons
      [
        { c: { d: 'd' }},
        [{ a: 'b', b: 'c', c: { d: 'd', e: 'e' }}, { c: { d: 'e' }}],
        [{ a: 'b', b: 'c', c: { d: 'd', e: 'e' }}]
      ],
  
      // based on https://gist.github.com/jdnichollsc/00ea8cf1204b17d9fb9a991fbd1dfee6
      [
        { $and: [{ 'a.s': { $lte: new Date('2017-01-29T05:00:00.000Z') }}, {'a.e': { $gte: new Date('2017-01-08T05:00:00.000Z') }}]},
        [{ a: { s: new Date('2017-01-13T05:00:00.000Z'), e: new Date('2017-01-31T05:00:00.000Z') }}],
        [{ a: { s: new Date('2017-01-13T05:00:00.000Z'), e: new Date('2017-01-31T05:00:00.000Z') }}]
      ],
  
    ].forEach(function (operation, i) {
  
      var filter     = operation[0];
      var array      = operation[1];
      var matchArray = operation[2];
  
      it(i + ': ' + JSON.stringify(filter), function() {
        assert.equal(JSON.stringify(array.filter(sift(filter))), JSON.stringify(matchArray));
      });
    });
  });
  