discourse/test/javascripts/components/category-selector-test.js.es6

import componentTest from 'helpers/component-test';
import Category from "discourse/models/category";

moduleForComponent('category-selector', {
  integration: true,
  beforeEach: function() {
    this.set('subject', selectKit());
  }
});

componentTest('default', {
  template: '{{category-selector categories=categories}}',

  beforeEach() {
    this.set('categories', [ Category.findById(2) ]);
  },

  test(assert) {
    andThen(() => {
      assert.equal(this.get('subject').header().value(), 2);
      assert.notOk(
        this.get('subject').rowByValue(2).exists(),
        "selected categories are not in the list"
      );
    });
  }
});

componentTest('with blacklist', {
  template: '{{category-selector categories=categories blacklist=blacklist}}',

  beforeEach() {
    this.set('categories', [ Category.findById(2) ]);
    this.set('blacklist', [ Category.findById(8) ]);
  },

  test(assert) {
    this.get('subject').expand();

    andThen(() => {
      assert.ok(
        this.get('subject').rowByValue(6).exists(),
        "not blacklisted categories are in the list"
      );
      assert.notOk(
        this.get('subject').rowByValue(8).exists(),
        "blacklisted categories are not in the list"
      );
    });
  }
});

componentTest('interactions', {
  template: '{{category-selector categories=categories}}',

  beforeEach() {
    this.set('categories', [
      Category.findById(2),
      Category.findById(6)
    ]);
  },

  test(assert) {
    this.get('subject').expand().selectRowByValue(8);

    andThen(() => {
      assert.equal(
        this.get('subject').header().value(),
        '2,6,8',
        'it adds the selected category'
      );
      assert.equal(this.get('categories').length, 3);
    });

    this.get('subject').expand();
    this.get('subject').keyboard().backspace();
    this.get('subject').keyboard().backspace();

    andThen(() => {
      assert.equal(
        this.get('subject').header().value(),
        '2,6',
        'it removes the last selected category'
      );
      assert.equal(this.get('categories').length, 2);
    });
  }
});