@bigtest/mirage/tests/integration/orm/has-many/3-reflexive/association-set-ids-test.js

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import Helper, { states } from './_helper';
import { module, test } from 'qunit';

module('Integration | ORM | Has Many | Reflexive | association #setIds', {
  beforeEach() {
    this.helper = new Helper();
  }
});

states.forEach((state) => {
  test(`a ${state} can update its association to include a saved child via childIds`, function(assert) {
    let [ tag, originalTags ] = this.helper[state]();
    let savedTag = this.helper.savedChild();

    tag.tagIds = [ savedTag.id ];

    assert.deepEqual(tag.tags.models[0].attrs, savedTag.attrs);
    assert.deepEqual(tag.tagIds, [ savedTag.id ]);

    tag.save();
    savedTag.reload();

    assert.deepEqual(savedTag.tags.models[0].attrs, tag.attrs, 'the inverse was set');
    originalTags.forEach(originalTag => {
      if (originalTag.isSaved()) {
        originalTag.reload();
        assert.notOk(originalTag.tags.includes(tag), 'old inverses were cleared');
      }
    });
  });

  test(`a ${state} can clear its association via a null childIds`, function(assert) {
    let [ tag, originalTags ] = this.helper[state]();

    tag.tagIds = null;

    assert.deepEqual(tag.tags.models, []);
    assert.deepEqual(tag.tagIds, []);

    tag.save();
    originalTags.forEach(originalTag => {
      originalTag.reload();
      assert.notOk(originalTag.tags.includes(tag), 'old inverses were cleared');
    });
  });
});