Contents

import { set } from '@ember/-internals/metal';
import { Component } from '../../utils/helpers';
import { moduleFor, RenderingTest } from '../../utils/test-case';

moduleFor(
  'Component willDestroyElement hook',
  class extends RenderingTest {
    ['@test it calls willDestroyElement when removed by if'](assert) {
      let didInsertElementCount = 0;
      let willDestroyElementCount = 0;
      let FooBarComponent = Component.extend({
        didInsertElement() {
          didInsertElementCount++;
          assert.notEqual(this.element.parentNode, null, 'precond component is in DOM');
        },
        willDestroyElement() {
          willDestroyElementCount++;
          assert.notEqual(this.element.parentNode, null, 'has not been removed from DOM yet');
        },
      });

      this.registerComponent('foo-bar', {
        ComponentClass: FooBarComponent,
        template: 'hello',
      });

      this.render('{{#if switch}}{{foo-bar}}{{/if}}', { switch: true });

      assert.equal(didInsertElementCount, 1, 'didInsertElement was called once');

      this.assertComponentElement(this.firstChild, { content: 'hello' });

      this.runTask(() => set(this.context, 'switch', false));

      assert.equal(willDestroyElementCount, 1, 'willDestroyElement was called once');

      this.assertText('');
    }
  }
);

Version data entries

1 entries across 1 versions & 1 rubygems

Version	Path
discourse-ember-source-3.6.0.0	dist/es/@ember/-internals/glimmer/tests/integration/components/will-destroy-element-hook-test.js