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59\A3R:\F3\CE"\B6\80\88\00\00i1u4ê\E9\F2á\A6\A2\FACM\93WMb*\E0*\00\00\00\00\00(\A8\80\00\00\80\00\00\00\00\00\00\00\00\00\FF\D9<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>C///</title>
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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::Function do
  module LibTest
    extend FFI::Library
    ffi_lib TestLibrary::PATH
    attach_function :testFunctionAdd, [:int, :int, :pointer], :int
  end
  before do
    @libtest = FFI::DynamicLibrary.open(TestLibrary::PATH,
                                        FFI::DynamicLibrary::RTLD_LAZY | FFI::DynamicLibrary::RTLD_GLOBAL)
  end

  it 'is initialized with a signature and a block' do
    fn = FFI::Function.new(:int, []) { 5 }
    expect(fn.call).to eql 5
  end

  it 'raises an error when passing a wrong signature' do
    expect { FFI::Function.new([], :int).new { } }.to raise_error TypeError
  end

  it 'returns a native pointer' do
    expect(FFI::Function.new(:int, []) { }).to be_a_kind_of FFI::Pointer
  end

  it 'can be used as callback from C passing to it a block' do
    function_add = FFI::Function.new(:int, [:int, :int]) { |a, b| a + b }
    expect(LibTest.testFunctionAdd(10, 10, function_add)).to eq(20)
  end

  it 'can be used as callback from C passing to it a Proc object' do
    function_add = FFI::Function.new(:int, [:int, :int], Proc.new { |a, b| a + b })
    expect(LibTest.testFunctionAdd(10, 10, function_add)).to eq(20)
  end

  it 'can be used to wrap an existing function pointer' do
    expect(FFI::Function.new(:int, [:int, :int], @libtest.find_function('testAdd')).call(10, 10)).to eq(20)
  end

  it 'can be attached to a module' do
    module Foo; end
    fp = FFI: