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#
# This file is part of ruby-ffi.
# For licensing, see LICENSE.SPECS
#
require File.expand_path(File.join(File.dirname(__FILE__), "spec_helper"))
describe FFI::Struct, ' by_ref' do
before :all do
@struct_class = struct_class = Class.new(FFI::Struct) do
layout :a, :pointer
end
@api = Module.new do
extend FFI::Library
ffi_lib TestLibrary::PATH
fn = FFI::Type::POINTER.size == FFI::Type::LONG.size ? :ret_ulong : :ret_u64
attach_function :struct_test, fn, [ struct_class.by_ref ], :pointer
end
end
it "should accept instances of exact struct class" do
s = @struct_class.new
expect(@api.struct_test(s)).to eq(s.pointer)
end
it "should accept nil" do
expect(@api.struct_test(nil)).to be_null
end
it "should reject other types" do
expect { expect(@api.struct_test('test')).to be_nil }.to raise_error(TypeError)
end
it "should reject instances of other struct classes" do
other_class = Class.new(FFI::Struct) do
layout :a, :pointer
end
expect { @api.struct_test(other_class.new) }.to raise_error(TypeError)
end
end
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