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# frozen_string_literal: true
require 'test_helper'
class StrainerFactoryUnitTest < Minitest::Test
include Liquid
module AccessScopeFilters
def public_filter
"public"
end
def private_filter
"private"
end
private :private_filter
end
StrainerFactory.add_global_filter(AccessScopeFilters)
module LateAddedFilter
def late_added_filter(_input)
"filtered"
end
end
def setup
@context = Context.build
end
def test_strainer
strainer = StrainerFactory.create(@context)
assert_equal(5, strainer.invoke('size', 'input'))
assert_equal("public", strainer.invoke("public_filter"))
end
def test_stainer_raises_argument_error
strainer = StrainerFactory.create(@context)
assert_raises(Liquid::ArgumentError) do
strainer.invoke("public_filter", 1)
end
end
def test_stainer_argument_error_contains_backtrace
strainer = StrainerFactory.create(@context)
exception = assert_raises(Liquid::ArgumentError) do
strainer.invoke("public_filter", 1)
end
assert_match(
/\ALiquid error: wrong number of arguments \((1 for 0|given 1, expected 0)\)\z/,
exception.message
)
source = AccessScopeFilters.instance_method(:public_filter).source_location
assert_equal(source.map(&:to_s), exception.backtrace[0].split(':')[0..1])
end
def test_strainer_only_invokes_public_filter_methods
strainer = StrainerFactory.create(@context)
assert_equal(false, strainer.class.invokable?('__test__'))
assert_equal(false, strainer.class.invokable?('test'))
assert_equal(false, strainer.class.invokable?('instance_eval'))
assert_equal(false, strainer.class.invokable?('__send__'))
assert_equal(true, strainer.class.invokable?('size')) # from the standard lib
end
def test_strainer_returns_nil_if_no_filter_method_found
strainer = StrainerFactory.create(@context)
assert_nil(strainer.invoke("private_filter"))
assert_nil(strainer.invoke("undef_the_filter"))
end
def test_strainer_returns_first_argument_if_no_method_and_arguments_given
strainer = StrainerFactory.create(@context)
assert_equal("password", strainer.invoke("undef_the_method", "password"))
end
def test_strainer_only_allows_methods_defined_in_filters
strainer = StrainerFactory.create(@context)
assert_equal("1 + 1", strainer.invoke("instance_eval", "1 + 1"))
assert_equal("puts", strainer.invoke("__send__", "puts", "Hi Mom"))
assert_equal("has_method?", strainer.invoke("invoke", "has_method?", "invoke"))
end
def test_strainer_uses_a_class_cache_to_avoid_method_cache_invalidation
a = Module.new
b = Module.new
strainer = StrainerFactory.create(@context, [a, b])
assert_kind_of(StrainerTemplate, strainer)
assert_kind_of(a, strainer)
assert_kind_of(b, strainer)
assert_kind_of(Liquid::StandardFilters, strainer)
end
def test_add_global_filter_clears_cache
assert_equal('input', StrainerFactory.create(@context).invoke('late_added_filter', 'input'))
StrainerFactory.add_global_filter(LateAddedFilter)
assert_equal('filtered', StrainerFactory.create(nil).invoke('late_added_filter', 'input'))
end
end
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