module('Data adapters - Maximum selection length');



var MaximumSelectionLength = require('select2/data/maximumSelectionLength');



var $ = require('jquery');

var Options = require('select2/options');

var Utils = require('select2/utils');



function MaximumSelectionStub () {

  this.called = false;

  this.currentData = [];

}



MaximumSelectionStub.prototype.current = function (callback) {

  callback(this.currentData);

};



MaximumSelectionStub.prototype.val = function (val) {

  this.currentData.push(val);

};



MaximumSelectionStub.prototype.query = function (params, callback) {

  this.called = true;

};



var MaximumSelectionData = Utils.Decorate(

  MaximumSelectionStub,

  MaximumSelectionLength

);



test('0 never displays the notice', function (assert) {

  var zeroOptions = new Options({

    maximumSelectionLength: 0

  });



  var data = new MaximumSelectionData(null, zeroOptions);



  data.trigger = function () {

    assert.ok(false, 'No events should be triggered');

  };



  data.query({

    term: ''

  });



  assert.ok(data.called);



  data = new MaximumSelectionData(null, zeroOptions);



  data.trigger = function () {

    assert.ok(false, 'No events should be triggered');

  };



  data.val('1');



  data.query({

    term: ''

  });



  assert.ok(data.called);



  data = new MaximumSelectionData(null, zeroOptions);



  data.trigger = function () {

    assert.ok(false, 'No events should be triggered');

  };



  data.val('1');

  data.val('2');



  data.query({

    term: ''

  });



  assert.ok(data.called);

});



test('< 0 never displays the notice', function (assert) {

  var negativeOptions = new Options({

    maximumSelectionLength: -1

  });



  var data = new MaximumSelectionData(null, negativeOptions);



  data.trigger = function () {

    assert.ok(false, 'No events should be triggered');

  };



  data.query({

    term: ''

  });



  assert.ok(data.called);



  data = new MaximumSelectionData(null, negativeOptions);



  data.trigger = function () {

    assert.ok(false, 'No events should be triggered');

  };



  data.val('1');



  data.query({

    term: ''

  });



  assert.ok(data.called);



  data = new MaximumSelectionData(null, negativeOptions);



  data.trigger = function () {

    assert.ok(false, 'No events should be triggered');

  };



  data.val('1');

  data.val('2');



  data.query({

    term: ''

  });



  assert.ok(data.called);

});



test('triggers when >= 1 selection' , function (assert) {

  var maxOfOneOptions = new Options({

    maximumSelectionLength: 1

  });

  var data = new MaximumSelectionData(null, maxOfOneOptions);



  data.trigger = function () {

    assert.ok(false, 'No events should be triggered');

  };



  data.query({

    term: ''

  });



  assert.ok(data.called);



  data = new MaximumSelectionData(null, maxOfOneOptions);



  data.trigger = function () {

    assert.ok(true, 'The event should be triggered.');

  };



  data.val('1');



  data.query({

    term: ''

  });



  assert.ok(!data.called);



});



test('triggers when >= 2 selections' , function (assert) {

  var maxOfTwoOptions = new Options({

    maximumSelectionLength: 2

  });

  var data = new MaximumSelectionData(null, maxOfTwoOptions);



  data.trigger = function () {

    assert.ok(false, 'No events should be triggered');

  };



  data.query({

    term: ''

  });



  assert.ok(data.called);



  data = new MaximumSelectionData(null, maxOfTwoOptions);



  data.trigger = function () {

    assert.ok(false, 'No events should be triggered');

  };



  data.val('1');



  data.query({

    term: ''

  });



  assert.ok(data.called);



  data = new MaximumSelectionData(null, maxOfTwoOptions);



  data.trigger = function () {

    assert.ok(true, 'The event should be triggered.');

  };



  data.val('1');

  data.val('2');



  data.query({

    term: ''

  });



  assert.ok(!data.called);



});

