non-python-compliant test that might like some cleanup:

module WinIoTestHelpMod
    extend FFI::Library
    ffi_lib 'kernel32'
    ffi_convention :stdcall

    GENERIC_READ  = 0x80000000
    GENERIC_WRITE = 0x40000000
    OPEN_EXISTING = 3


    attach_function :CreateFileA,     [:pointer, :uint32, :uint32, :pointer, :uint32, :uint32, :pointer], :pointer, blocking: true
	end
	  module WinCTestHelpMod
    extend FFI::Library
    ffi_lib 'msvcrt'
    ffi_convention :stdcall

    attach_function :_open_osfhandle,     [:pointer, :int], :int, blocking: true
  end
class WinIOTestHelp
	def self.open(file)
	    flags = WinIoTestHelpMod::GENERIC_READ | WinIoTestHelpMod::GENERIC_WRITE
    	@fd = WinIoTestHelpMod.CreateFileA(file, flags, 0, nil, WinIoTestHelpMod::OPEN_EXISTING, 0, nil)
	    err = FFI.errno
	    if err != 0
    	  raise "ffi error: #{err}"
		end
		WinCTestHelpMod._open_osfhandle @fd, File::RDWR
	end
end

describe "fd" do
FILENAME=".atestfile"
  before do
   File.write(FILENAME, "Some contents")
  end

  after do
   File.delete(FILENAME)
  end

	it "should be reopenable" do # fails .7, fixed .8, 9. Works on all systems, no enxio codepath
		File.open(FILENAME, "rb") do |f|
			fno = f.fileno
			expect(fno).to be > 2
			expect(fno).to be < 4096
			expect(f.fileno).to eq fno
			expect(f.read(2)).to eq "So"
			io = IO.for_fd(fno)
			expect(io.read(2)).to eq "me"
		end
	end
	

	it "should support sysopen" do # Fails .7, fixed .8, .9. No ENXIO codepath, works on all systems
		fno = File::sysopen(FILENAME, "rb")
			expect(fno).to be > 2
			expect(fno).to be < 4096
			io = IO.for_fd(fno)
			expect(io.read(2)).to eq "So"
			io.close
		
	end
	it "should support win open" do # Fails .7, .8, fixed .9. Requires ENXIO codepath. Windows only
		fno = WinIOTestHelp.open(FILENAME)
			expect(fno).to be > 2
			expect(fno).to be < 4096
			io = IO.for_fd(fno)
			expect(io.read(2)).to eq "So"
		
			io.close
	end
end

Expected .7 error: 0/3 pass
Expected .8 error: 2/3 pass. large stack trace+ permisison denied (file stil open, locked)
Tested .9-snapshot: 3/3 pass

Uh oh!

Actually release Windows for_fd fixes #5829

Description

Metadata

Metadata

Assignees

Labels

Type

Projects

Milestone

Relationships

Development

Issue actions