import { isEmpty } from '..';
import Map from '@ember/map';
import OrderedSet from '@ember/map/lib/ordered-set';
import { moduleFor, AbstractTestCase } from 'internal-test-helpers';

moduleFor(
  'isEmpty',
  class extends AbstractTestCase {
    ['@test isEmpty'](assert) {
      let string = 'string';
      let fn = function() {};
      let object = { length: 0 };

      assert.equal(true, isEmpty(null), 'for null');
      assert.equal(true, isEmpty(undefined), 'for undefined');
      assert.equal(true, isEmpty(''), 'for an empty String');
      assert.equal(false, isEmpty('  '), 'for a whitespace String');
      assert.equal(false, isEmpty('\n\t'), 'for another whitespace String');
      assert.equal(false, isEmpty(true), 'for true');
      assert.equal(false, isEmpty(false), 'for false');
      assert.equal(false, isEmpty(string), 'for a String');
      assert.equal(false, isEmpty(fn), 'for a Function');
      assert.equal(false, isEmpty(0), 'for 0');
      assert.equal(true, isEmpty([]), 'for an empty Array');
      assert.equal(false, isEmpty({}), 'for an empty Object');
      assert.equal(true, isEmpty(object), "for an Object that has zero 'length'");
    }

    ['@test isEmpty Map'](assert) {
      expectDeprecation(
        () => {
          let map = new Map();
          assert.equal(true, isEmpty(map), 'Empty map is empty');
          map.set('foo', 'bar');
          assert.equal(false, isEmpty(map), 'Map is not empty');
        },
        'Use of @ember/Map is deprecated. Please use native `Map` instead',
        { id: 'ember-map-deprecation', until: '3.5.0' }
      );
    }

    ['@test isEmpty Ember.OrderedSet'](assert) {
      expectDeprecation(
        () => {
          let orderedSet = new OrderedSet();
          assert.equal(true, isEmpty(orderedSet), 'Empty ordered set is empty');
          orderedSet.add('foo');
          assert.equal(false, isEmpty(orderedSet), 'Ordered set is not empty');
        },
        'Use of @ember/OrderedSet is deprecated. Please use native `Map` instead',
        { id: 'ember-map-deprecation', until: '3.5.0' }
      );
    }
  }
);