Prohlížeč zdrojového kódu

require "rails_helper"

RSpec.describe ExampleRegistry do
  # Tests use the real app/examples directory which has sorting_algorithms

  describe ".all" do
    it "returns an array of ExampleEntry objects" do
      entries = ExampleRegistry.all
      expect(entries).to all(be_a(ExampleEntry))
    end

    it "includes the sorting_algorithms example" do
      slugs = ExampleRegistry.all.map(&:slug)
      expect(slugs).to include("sorting_algorithms")
    end

    it "returns entries sorted by position" do
      entries = ExampleRegistry.all
      positions = entries.map(&:position)
      expect(positions).to eq(positions.sort)
    end
  end

  describe ".find_by_slug" do
    it "finds an example by slug" do
      entry = ExampleRegistry.find_by_slug("sorting_algorithms")
      expect(entry).to be_a(ExampleEntry)
      expect(entry.title).to eq("Řadící algoritmy")
    end

    it "returns nil for unknown slug" do
      expect(ExampleRegistry.find_by_slug("nonexistent")).to be_nil
    end
  end

  describe ".filter_by_tag" do
    it "filters examples by tag" do
      entries = ExampleRegistry.filter_by_tag("algoritmy")
      expect(entries.map(&:slug)).to include("sorting_algorithms")
    end

    it "returns empty array for unknown tag" do
      expect(ExampleRegistry.filter_by_tag("nonexistent")).to be_empty
    end
  end

  describe ".tags" do
    it "returns unique sorted tags" do
      tags = ExampleRegistry.tags
      expect(tags).to eq(tags.sort)
      expect(tags).to eq(tags.uniq)
    end
  end

  describe ".reload!" do
    it "rebuilds the instance" do
      old_instance = ExampleRegistry.instance
      ExampleRegistry.reload!
      expect(ExampleRegistry.instance).not_to equal(old_instance)
    end
  end
end