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) {
    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)]);
  },

  async test(assert) {
    await this.get("subject").expand();

    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)]);
  },

  async test(assert) {
    await this.get("subject").expand();
    await this.get("subject").selectRowByValue(8);

    assert.equal(
      this.get("subject")
        .header()
        .value(),
      "2,6,8",
      "it adds the selected category"
    );
    assert.equal(this.get("categories").length, 3);

    await this.get("subject").expand();

    await this.get("subject").keyboard("backspace");
    await this.get("subject").keyboard("backspace");

    assert.equal(
      this.get("subject")
        .header()
        .value(),
      "2,6",
      "it removes the last selected category"
    );
    assert.equal(this.get("categories").length, 2);
  }
});