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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 "functions with custom types" do
class Custom_enum
extend FFI::DataConverter
ToNativeMap= { :a => 1, :b => 2, :c => 3 }
FromNativeMap = { 1 => :a, 2 => :b, 3 => :c }
def self.native_type
@native_type_called = true
FFI::Type::INT32
end
def self.to_native(val, ctx)
@to_native_called = true
ToNativeMap[val]
end
def self.from_native(val, ctx)
@from_native_called = true
FromNativeMap[val]
end
def self.native_type_called?; @native_type_called; end
def self.from_native_called?; @from_native_called; end
def self.to_native_called?; @to_native_called; end
end
it "can attach with custom return type" do
expect do
Module.new do
extend FFI::Library
ffi_lib TestLibrary::PATH
attach_function :ret_s32, [ :int ], Custom_enum
end
end.not_to raise_error
end
it "should return object of correct type" do
m = Module.new do
extend FFI::Library
ffi_lib TestLibrary::PATH
attach_function :ret_s32, [ :int ], Custom_enum
end
expect(m.ret_s32(1).is_a?(Symbol)).to be true
end
it "from_native should be called for result" do
m = Module.new do
extend FFI::Library
ffi_lib TestLibrary::PATH
attach_function :ret_s32, [ :int ], Custom_enum
end
m.ret_s32(1)
expect(Custom_enum.from_native_called?).to be true
end
it "to_native should be called for parameter" do
m = Module.new do
extend FFI::Library
ffi_lib TestLibrary::PATH
attach_function :ret_s32, [ Custom_enum ], :int
end
m.ret_s32(:a)
expect(Custom_enum.to_native_called?).to be true
end
end
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