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# -*- coding: us-ascii -*-
require_relative 'test_base'
EnvUtil.suppress_warning {require 'dl/struct'}
module DL
class TestCStructEntity < TestBase
def test_class_size
types = [TYPE_DOUBLE, TYPE_CHAR]
size = CStructEntity.size types
alignments = types.map { |type| PackInfo::ALIGN_MAP[type] }
expected = PackInfo.align 0, alignments[0]
expected += PackInfo::SIZE_MAP[TYPE_DOUBLE]
expected = PackInfo.align expected, alignments[1]
expected += PackInfo::SIZE_MAP[TYPE_CHAR]
expected = PackInfo.align expected, alignments.max
assert_equal expected, size
end
def test_class_size_with_count
size = CStructEntity.size([[TYPE_DOUBLE, 2], [TYPE_CHAR, 20]])
types = [TYPE_DOUBLE, TYPE_CHAR]
alignments = types.map { |type| PackInfo::ALIGN_MAP[type] }
expected = PackInfo.align 0, alignments[0]
expected += PackInfo::SIZE_MAP[TYPE_DOUBLE] * 2
expected = PackInfo.align expected, alignments[1]
expected += PackInfo::SIZE_MAP[TYPE_CHAR] * 20
expected = PackInfo.align expected, alignments.max
assert_equal expected, size
end
def test_set_ctypes
union = CStructEntity.malloc [TYPE_INT, 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
end
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