liquid/test/integration/variable_test.rb

# frozen_string_literal: true

require 'test_helper'

class VariableTest < Minitest::Test
  include Liquid

  def test_simple_variable
    template = Template.parse(%({{test}}))
    assert_equal('worked', template.render!('test' => 'worked'))
    assert_equal('worked wonderfully', template.render!('test' => 'worked wonderfully'))
  end

  def test_variable_render_calls_to_liquid
    assert_template_result('foobar', '{{ foo }}', 'foo' => ThingWithToLiquid.new)
  end

  def test_simple_with_whitespaces
    template = Template.parse(%(  {{ test }}  ))
    assert_equal('  worked  ', template.render!('test' => 'worked'))
    assert_equal('  worked wonderfully  ', template.render!('test' => 'worked wonderfully'))
  end

  def test_ignore_unknown
    template = Template.parse(%({{ test }}))
    assert_equal('', template.render!)
  end

  def test_using_blank_as_variable_name
    template = Template.parse("{% assign foo = blank %}{{ foo }}")
    assert_equal('', template.render!)
  end

  def test_using_empty_as_variable_name
    template = Template.parse("{% assign foo = empty %}{{ foo }}")
    assert_equal('', template.render!)
  end

  def test_hash_scoping
    template = Template.parse(%({{ test.test }}))
    assert_equal('worked', template.render!('test' => { 'test' => 'worked' }))
  end

  def test_false_renders_as_false
    assert_equal('false', Template.parse("{{ foo }}").render!('foo' => false))
    assert_equal('false', Template.parse("{{ false }}").render!)
  end

  def test_nil_renders_as_empty_string
    assert_equal('', Template.parse("{{ nil }}").render!)
    assert_equal('cat', Template.parse("{{ nil | append: 'cat' }}").render!)
  end

  def test_reuse_parsed_template
    template = Template.parse(%({{ greeting }} {{ name }}))
    assert_equal('Hello Tobi', template.render!('greeting' => 'Hello', 'name' => 'Tobi'))
    assert_equal('Goodbye Brian', template.render!('greeting' => 'Goodbye', 'name' => 'Brian'))
  end

  def test_hash_with_default_proc
    template        = Template.parse(%(Hello {{ test }}))
    assigns         = Hash.new { |_h, k| raise "Unknown variable '#{k}'" }
    assigns['test'] = 'Tobi'
    assert_equal('Hello Tobi', template.render!(assigns))
    assigns.delete('test')
    e = assert_raises(RuntimeError) do
      template.render!(assigns)
    end
    assert_equal("Unknown variable 'test'", e.message)
  end

  def test_multiline_variable
    assert_equal('worked', Template.parse("{{\ntest\n}}").render!('test' => 'worked'))
  end

  def test_render_symbol
    assert_template_result('bar', '{{ foo }}', 'foo' => :bar)
  end
end