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# frozen_string_literal: true
begin
require_relative 'helper'
require 'fiddle/struct'
rescue LoadError
end
module Fiddle
class TestCUnionEntity < TestCase
def test_class_size
size = CUnionEntity.size([TYPE_DOUBLE, TYPE_CHAR])
assert_equal SIZEOF_DOUBLE, size
end
def test_class_size_with_count
size = CUnionEntity.size([[TYPE_DOUBLE, 2], [TYPE_CHAR, 20]])
assert_equal SIZEOF_CHAR * 20, size
end
def test_set_ctypes
CUnionEntity.malloc([TYPE_INT, TYPE_LONG], Fiddle::RUBY_FREE) do |union|
union.assign_names %w[int long]
# this test is roundabout because the stored ctypes are not accessible
union['long'] = 1
assert_equal 1, union['long']
union['int'] = 1
assert_equal 1, union['int']
end
end
end
end if defined?(Fiddle)
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