70 lines
2.4 KiB
Ruby
70 lines
2.4 KiB
Ruby
# frozen_string_literal: true
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begin
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require_relative 'helper'
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require 'fiddle/struct'
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require 'fiddle/cparser'
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require 'fiddle/import'
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rescue LoadError
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end
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module Fiddle
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class TestCStructBuilder < TestCase
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include Fiddle::CParser
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extend Fiddle::Importer
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RBasic = struct ['void * flags',
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'void * klass' ]
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RObject = struct [
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{ 'basic' => RBasic },
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{ 'as' => union([
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{ 'heap'=> struct([ 'uint32_t numiv',
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'void * ivptr',
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'void * iv_index_tbl' ]) },
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'void *ary[3]' ])}
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]
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def test_basic_embedded_members
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assert_equal 0, RObject.offsetof("basic.flags")
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assert_equal Fiddle::SIZEOF_VOIDP, RObject.offsetof("basic.klass")
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end
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def test_embedded_union_members
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assert_equal 2 * Fiddle::SIZEOF_VOIDP, RObject.offsetof("as")
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assert_equal 2 * Fiddle::SIZEOF_VOIDP, RObject.offsetof("as.heap")
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assert_equal 2 * Fiddle::SIZEOF_VOIDP, RObject.offsetof("as.heap.numiv")
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assert_equal 3 * Fiddle::SIZEOF_VOIDP, RObject.offsetof("as.heap.ivptr")
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assert_equal 4 * Fiddle::SIZEOF_VOIDP, RObject.offsetof("as.heap.iv_index_tbl")
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end
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def test_as_ary
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assert_equal 2 * Fiddle::SIZEOF_VOIDP, RObject.offsetof("as.ary")
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end
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def test_offsetof
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types, members = parse_struct_signature(['int64_t i','char c'])
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my_struct = Fiddle::CStructBuilder.create(Fiddle::CStruct, types, members)
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assert_equal 0, my_struct.offsetof("i")
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assert_equal Fiddle::SIZEOF_INT64_T, my_struct.offsetof("c")
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end
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def test_offset_with_gap
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types, members = parse_struct_signature(['void *p', 'char c', 'long x'])
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my_struct = Fiddle::CStructBuilder.create(Fiddle::CStruct, types, members)
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assert_equal PackInfo.align(0, ALIGN_VOIDP), my_struct.offsetof("p")
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assert_equal PackInfo.align(SIZEOF_VOIDP, ALIGN_CHAR), my_struct.offsetof("c")
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assert_equal SIZEOF_VOIDP + PackInfo.align(SIZEOF_CHAR, ALIGN_LONG), my_struct.offsetof("x")
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end
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def test_union_offsetof
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types, members = parse_struct_signature(['int64_t i','char c'])
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my_struct = Fiddle::CStructBuilder.create(Fiddle::CUnion, types, members)
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assert_equal 0, my_struct.offsetof("i")
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assert_equal 0, my_struct.offsetof("c")
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end
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end
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end if defined?(Fiddle)
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