lint_test.rb

require_relative "./helper"

describe "lint test" do
  pages.each do |page|
    next unless page["path"].match?(/\.md$/)

    describe page["path"] do
      describe "frontmatter" do
        before do
          # Load raw metadata to skip defaults
          @data = SafeYAML.load_file(page["path"])
        end

        it "has valid fields" do
          assert_valid_fields @data, site.data["fields"]
        end
      end
    end
  end

  def assert_valid_fields(data, fields)
    extra_fields = data.keys - fields.keys
    assert extra_fields.empty?, "Unexpected metadata: #{extra_fields.inspect}"

    fields.each do |name, attrs|
      assert data.key?(name), "#{name} is required" if attrs["required"]

      if attrs["type"] && @data[name]
        assert_kind_of Kernel.const_get(attrs["type"]), @data[name]
      end

      # Check subfields
      next unless attrs["fields"] && @data[name]
      @data[name].each do |d|
        assert_valid_fields(d, attrs["fields"])
      end
    end
  end
end