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# frozen_string_literal: true
require 'test_helper'
class FoobarTag < Liquid::Tag
def render_to_output_buffer(_context, output)
output << ' '
output
end
end
class BlankTestFileSystem
def read_template_file(template_path)
template_path
end
end
class BlankTest < Minitest::Test
include Liquid
N = 10
def wrap_in_for(body)
"{% for i in (1..#{N}) %}#{body}{% endfor %}"
end
def wrap_in_if(body)
"{% if true %}#{body}{% endif %}"
end
def wrap(body)
wrap_in_for(body) + wrap_in_if(body)
end
def test_new_tags_are_not_blank_by_default
with_custom_tag('foobar', FoobarTag) do
assert_template_result(" " * N, wrap_in_for("{% foobar %}"))
end
end
def test_loops_are_blank
assert_template_result("", wrap_in_for(" "))
end
def test_if_else_are_blank
assert_template_result("", "{% if true %} {% elsif false %} {% else %} {% endif %}")
end
def test_unless_is_blank
assert_template_result("", wrap("{% unless true %} {% endunless %}"))
end
def test_mark_as_blank_only_during_parsing
assert_template_result(" " * (N + 1), wrap(" {% if false %} this never happens, but still, this block is not blank {% endif %}"))
end
def test_comments_are_blank
assert_template_result("", wrap(" {% comment %} whatever {% endcomment %} "))
end
def test_captures_are_blank
assert_template_result("", wrap(" {% capture foo %} whatever {% endcapture %} "))
end
def test_nested_blocks_are_blank_but_only_if_all_children_are
assert_template_result("", wrap(wrap(" ")))
assert_template_result("\n but this is not " * (N + 1),
wrap('{% if true %} {% comment %} this is blank {% endcomment %} {% endif %}
{% if true %} but this is not {% endif %}'))
end
def test_assigns_are_blank
assert_template_result("", wrap(' {% assign foo = "bar" %} '))
end
def test_whitespace_is_blank
assert_template_result("", wrap(" "))
assert_template_result("", wrap("\t"))
end
def test_whitespace_is_not_blank_if_other_stuff_is_present
body = " x "
assert_template_result(body * (N + 1), wrap(body))
end
def test_increment_is_not_blank
assert_template_result(" 0" * 2 * (N + 1), wrap("{% assign foo = 0 %} {% increment foo %} {% decrement foo %}"))
end
def test_cycle_is_not_blank
assert_template_result(" " * ((N + 1) / 2) + " ", wrap("{% cycle ' ', ' ' %}"))
end
def test_raw_is_not_blank
assert_template_result(" " * (N + 1), wrap(" {% raw %} {% endraw %}"))
end
def test_include_is_blank
Liquid::Template.file_system = BlankTestFileSystem.new
assert_template_result("foobar" * (N + 1), wrap("{% include 'foobar' %}"))
assert_template_result(" foobar " * (N + 1), wrap("{% include ' foobar ' %}"))
assert_template_result(" " * (N + 1), wrap(" {% include ' ' %} "))
end
def test_case_is_blank
assert_template_result("", wrap(" {% assign foo = 'bar' %} {% case foo %} {% when 'bar' %} {% when 'whatever' %} {% else %} {% endcase %} "))
assert_template_result("", wrap(" {% assign foo = 'else' %} {% case foo %} {% when 'bar' %} {% when 'whatever' %} {% else %} {% endcase %} "))
assert_template_result(" x " * (N + 1), wrap(" {% assign foo = 'else' %} {% case foo %} {% when 'bar' %} {% when 'whatever' %} {% else %} x {% endcase %} "))
end
end
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