discourse/test/javascripts/controllers/reorder-categories-test.js.es6

import { mapRoutes } from "discourse/mapping-router";
import createStore from "helpers/create-store";

moduleFor("controller:reorder-categories", "controller:reorder-categories", {
  beforeEach() {
    this.registry.register("router:main", mapRoutes());
  },
  needs: ["controller:modal"]
});

QUnit.test("fixIndices set unique position number", function(assert) {
  const store = createStore();

  const categories = [];
  for (let i = 0; i < 3; ++i) {
    categories.push(store.createRecord("category", { id: i, position: 0 }));
  }

  const site = Ember.Object.create({ categories: categories });
  const reorderCategoriesController = this.subject({ site });

  reorderCategoriesController.fixIndices();

  reorderCategoriesController.get("categoriesOrdered").forEach((category, index) => {
    assert.equal(category.get("position"), index);
  });
});

QUnit.test(
  "fixIndices places subcategories after their parent categories, while maintaining the relative order",
  function(assert) {
    const store = createStore();

    const parent = store.createRecord("category", { id: 1, position: 1, slug: "parent" });
    const child1 = store.createRecord("category", { id: 2, position: 3, slug: "child1", parent_category_id: 1 });
    const child2 = store.createRecord("category", { id: 3, position: 0, slug: "child2", parent_category_id: 1 });
    const other = store.createRecord("category", { id: 4, position: 2, slug: "other" });

    const categories = [child2, parent, other, child1];
    const expectedOrderSlugs = ["parent", "child2", "child1", "other"];

    const site = Ember.Object.create({ categories: categories });
    const reorderCategoriesController = this.subject({ site });

    reorderCategoriesController.fixIndices();

    assert.deepEqual(reorderCategoriesController.get("categoriesOrdered").mapBy("slug"), expectedOrderSlugs);
  }
);