cache_name_regex.rb

cache_name_regex.rb

require 'active_support'
require 'active_support/test_case'
require 'minitest/autorun'

ActiveSupport::TestCase.test_order = :random

class RegexTest < ActiveSupport::TestCase
  setup do
    @regex = /
      \A(?:<%#.*%>\n?)? # optional ERB comment
      <%\s+cache\(?\s*  # cache call with optional starting paren and whitespace
      (\w+\.?)          # variable name and optional period so topic.name will not bust the topic cache
    /x
  end

  test "cache call regex" do
    [
      "<% cache horse_shoe %>",
      "<% cache horse_shoe %>\n",
      "<% cache(horse_shoe) %>",
      "<% cache( horse_shoe) %>",
      "<% cache( horse_shoe ) %>",
      "<% cache horse_shoe, skip_digest: true %>",
      "<% cache(horse_shoe, skip_digest: true) %>"
    ].each do |call|
      assert_match @regex, call
      assert_equal "horse_shoe", @regex.match(call).captures.first
    end
  end

  test "regex shouldn't match" do
    [
      "hello <% cache topic %>",
      "<% cache %>"
    ].each do |call|
      refute_match @regex, call
    end
  end

  test "attribute don't match" do
    refute_equal 'notification', @regex.match("<% cache notification.name %>").captures.first
  end

  test "beginning of the line comment ignored" do
    assert_equal 'notification', @regex.match("<%# Comment %><% cache notification do %>").captures.first
  end

  test "beginning of the line comment ignored with newline" do
    assert_equal 'notification', @regex.match("<%# Comment %>\n<% cache notification do %>").captures.first
  end
end