import os
import tarfile
from io import BytesIO
from bunker.files.bunkeredfile import BunkeredFile

def test_load_from_tar(tmpdir):
	tmpdname = str(tmpdir)

	with open(os.path.join(tmpdname, "a.tx"), "wb") as f:
		f.write(b"abcdefg")
	with open(os.path.join(tmpdname, "b.tx"), "wb") as f:
		f.write(b"foobar")
	
	f = tarfile.TarFile(os.path.join(tmpdname, "test.tar"), "w")

	f.add(os.path.join(tmpdname, "a.tx"))
	f.add(os.path.join(tmpdname, "b.tx"))

	f.close()

	f = tarfile.TarFile(os.path.join(tmpdname, "test.tar"))

	ainfo = f.next()
	binfo = f.next()

	a = BunkeredFile.from_tar(f, ainfo)
	b = BunkeredFile.from_tar(f, binfo)

	assert a.read() == b"abcdefg"
	assert b.read() == b"foobar"

def test_from_BytesIO():
	b = BytesIO(b"foobar")
	f = BunkeredFile.from_BytesIO(b, "test")

	assert len(f) == len(b"foobar")
	assert f.read() == b"foobar"