require_relative 'test_base' require 'dl/func' require 'dl/value' require 'dl/struct' class DL::TestCStructEntity < DL::TestBase def test_class_size types = [DL::TYPE_DOUBLE, DL::TYPE_CHAR] size = DL::CStructEntity.size types alignments = types.map { |type| DL::PackInfo::ALIGN_MAP[type] } expected = DL::PackInfo.align 0, alignments[0] expected += DL::PackInfo::SIZE_MAP[DL::TYPE_DOUBLE] expected = DL::PackInfo.align expected, alignments[1] expected += DL::PackInfo::SIZE_MAP[DL::TYPE_CHAR] expected = DL::PackInfo.align expected, alignments.max assert_equal expected, size end def test_class_size_with_count size = DL::CStructEntity.size([[DL::TYPE_DOUBLE, 2], [DL::TYPE_CHAR, 20]]) types = [DL::TYPE_DOUBLE, DL::TYPE_CHAR] alignments = types.map { |type| DL::PackInfo::ALIGN_MAP[type] } expected = DL::PackInfo.align 0, alignments[0] expected += DL::PackInfo::SIZE_MAP[DL::TYPE_DOUBLE] * 2 expected = DL::PackInfo.align expected, alignments[1] expected += DL::PackInfo::SIZE_MAP[DL::TYPE_CHAR] * 20 expected = DL::PackInfo.align expected, alignments.max assert_equal expected, size end def test_set_ctypes union = DL::CStructEntity.malloc [DL::TYPE_INT, DL::TYPE_LONG] union.assign_names %w[int long] # this test is roundabout because the stored ctypes are not accessible union['long'] = 1 union['int'] = 2 assert_equal 1, union['long'] assert_equal 2, union['int'] end end