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);

});