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Diffstat (limited to 'test/fiddle/test_c_union_entity.rb')
-rw-r--r-- | test/fiddle/test_c_union_entity.rb | 31 |
1 files changed, 31 insertions, 0 deletions
diff --git a/test/fiddle/test_c_union_entity.rb b/test/fiddle/test_c_union_entity.rb new file mode 100644 index 0000000000..d27c9edb52 --- /dev/null +++ b/test/fiddle/test_c_union_entity.rb @@ -0,0 +1,31 @@ +require_relative 'helper' + +require 'fiddle/struct' + +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 + union = CUnionEntity.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 + assert_equal 1, union['long'] + + union['int'] = 1 + assert_equal 1, union['int'] + end + end +end |