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# frozen_string_literal: true
require 'test_helper'
class StrainerTemplateUnitTest < Minitest::Test
include Liquid
def test_add_filter_when_wrong_filter_class
c = Context.new
s = c.strainer
wrong_filter = ->(v) { v.reverse }
exception = assert_raises(TypeError) do
s.class.add_filter(wrong_filter)
end
assert_equal(exception.message, "wrong argument type Proc (expected Module)")
end
module PrivateMethodOverrideFilter
private
def public_filter
"overriden as private"
end
end
def test_add_filter_raises_when_module_privately_overrides_registered_public_methods
strainer = Context.new.strainer
error = assert_raises(Liquid::MethodOverrideError) do
strainer.class.add_filter(PrivateMethodOverrideFilter)
end
assert_equal('Liquid error: Filter overrides registered public methods as non public: public_filter', error.message)
end
module ProtectedMethodOverrideFilter
protected
def public_filter
"overriden as protected"
end
end
def test_add_filter_raises_when_module_overrides_registered_public_method_as_protected
strainer = Context.new.strainer
error = assert_raises(Liquid::MethodOverrideError) do
strainer.class.add_filter(ProtectedMethodOverrideFilter)
end
assert_equal('Liquid error: Filter overrides registered public methods as non public: public_filter', error.message)
end
module PublicMethodOverrideFilter
def public_filter
"public"
end
end
def test_add_filter_does_not_raise_when_module_overrides_previously_registered_method
with_global_filter do
strainer = Context.new.strainer
strainer.class.add_filter(PublicMethodOverrideFilter)
assert(strainer.class.send(:filter_methods).include?('public_filter'))
end
end
def test_add_filter_does_not_include_already_included_module
mod = Module.new do
class << self
attr_accessor :include_count
def included(_mod)
self.include_count += 1
end
end
self.include_count = 0
end
strainer = Context.new.strainer
strainer.class.add_filter(mod)
strainer.class.add_filter(mod)
assert_equal(1, mod.include_count)
end
end
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