Boolean precedence unit tests

test/test_boolean_helper.rb

@@ -0,0 +1,61 @@
+#!/usr/bin/env ruby
+# frozen_string_literal: true
+
+module Minitest
+  module Assertions
+    include Liquid
+    def assert_with_lax_parsing(template, expected_output, context = {})
+      prev_error_mode = Liquid::Environment.default.error_mode
+      Liquid::Environment.default.error_mode = :lax
+
+      begin
+        actual_output = Liquid::Template.parse(template).render(context)
+      rescue StandardError => e
+        actual_output = e.message
+      ensure
+        Liquid::Environment.default.error_mode = prev_error_mode
+      end
+
+      assert_equal(expected_output.strip, actual_output.strip)
+    end
+
+    def assert_parity(liquid_expression, expected_result, args = {})
+      assert_condition(liquid_expression, expected_result, args)
+      assert_expression(liquid_expression, expected_result, args)
+    end
+
+    def assert_expression(liquid_expression, expected_result, args = {})
+      assert_parity_scenario(:expression, "{{ #{liquid_expression} }}", expected_result, args)
+    end
+
+    def assert_condition(liquid_condition, expected_result, args = {})
+      assert_parity_scenario(:condition, "{% if #{liquid_condition} %}true{% else %}false{% endif %}", expected_result, args)
+    end
+
+    def assert_parity_scenario(kind, template, exp_output, args = {})
+      act_output = Liquid::Template.parse(template).render(args)
+
+      assert_equal(exp_output, act_output, <<~ERROR_MESSAGE)
+        #{kind.to_s.capitalize} template failure:
+        ---
+        #{template}
+        ---
+        args: #{args.inspect}
+      ERROR_MESSAGE
+    end
+  end
+end
+
+class LinkDrop < Liquid::Drop
+  attr_accessor :levels, :links, :title, :type, :url
+
+  def initialize(levels: nil, links: nil, title: nil, type: nil, url: nil)
+    super()
+
+    @levels = levels
+    @links = links
+    @title = title
+    @type = type
+    @url = url
+  end
+end