JezK
Edit File: attach_function_spec.rb
# # This file is part of ruby-ffi. # For licensing, see LICENSE.SPECS # require File.expand_path(File.join(File.dirname(__FILE__), "spec_helper")) class Timeval < FFI::Struct layout :tv_sec, :ulong, 0, :tv_usec, :ulong, 4 end module LibC extend FFI::Library ffi_lib FFI::Library::LIBC attach_function :gettimeofday, [:pointer, :pointer], :int end describe FFI::Library, "#attach_function" do it "correctly returns a value for gettimeofday" do t = Timeval.new time = LibC.gettimeofday(t.pointer, nil) expect(time).to be_kind_of(Integer) end it "correctly populates a struct for gettimeofday" do t = Timeval.new time = LibC.gettimeofday(t.pointer, nil) expect(t[:tv_sec]).to be_kind_of(Numeric) expect(t[:tv_usec]).to be_kind_of(Numeric) end end