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import unittest
import random
import os
from commontest import abs_test_dir, old_test_dir, abs_output_dir, os_system
from rdiff_backup import Globals, Rdiff, rpath
def MakeRandomFile(path):
"""Writes a random file of length between 10000 and 100000"""
with open(path, "w", encoding='UTF-8') as fp:
randseq = []
for i in range(random.randrange(5000, 30000)):
randseq.append(chr(random.randrange(256)))
randstr = "".join(randseq)
fp.write(randstr)
class RdiffTest(unittest.TestCase):
"""Test rdiff"""
lc = Globals.local_connection
basis = rpath.RPath(lc, os.path.join(abs_test_dir, b"basis"))
new = rpath.RPath(lc, os.path.join(abs_test_dir, b"new"))
output = rpath.RPath(lc, abs_output_dir)
delta = rpath.RPath(lc, os.path.join(abs_test_dir, b"delta"))
signature = rpath.RPath(lc, os.path.join(abs_test_dir, b"signature"))
def testRdiffSig(self):
"""Test making rdiff signatures"""
sig = rpath.RPath(
self.lc,
os.path.join(old_test_dir, b"various_file_types",
b"regular_file.sig"))
sigfp = sig.open("rb")
rfsig = Rdiff.get_signature(
rpath.RPath(
self.lc,
os.path.join(old_test_dir, b"various_file_types",
b"regular_file")), 2048)
self.assertTrue(rpath._cmp_file_obj(sigfp, rfsig))
sigfp.close()
rfsig.close()
def testRdiffDeltaPatch(self):
"""Test making deltas and patching files"""
rplist = [
self.basis, self.new, self.delta, self.signature, self.output
]
for rp in rplist:
if rp.lstat():
rp.delete()
for i in range(2):
MakeRandomFile(self.basis.path)
MakeRandomFile(self.new.path)
list(map(rpath.RPath.setdata, [self.basis, self.new]))
self.assertTrue(self.basis.lstat() and self.new.lstat())
self.signature.write_from_fileobj(Rdiff.get_signature(self.basis))
self.assertTrue(self.signature.lstat())
self.delta.write_from_fileobj(
Rdiff.get_delta_sigrp_hash(self.signature, self.new))
self.assertTrue(self.delta.lstat())
Rdiff.patch_local(self.basis, self.delta, self.output)
self.assertTrue(rpath.cmp(self.new, self.output))
list(map(rpath.RPath.delete, rplist))
def testRdiffDeltaPatchGzip(self):
"""Same as above by try gzipping patches"""
rplist = [
self.basis, self.new, self.delta, self.signature, self.output
]
for rp in rplist:
if rp.lstat():
rp.delete()
MakeRandomFile(self.basis.path)
MakeRandomFile(self.new.path)
list(map(rpath.RPath.setdata, [self.basis, self.new]))
self.assertTrue(self.basis.lstat() and self.new.lstat())
self.signature.write_from_fileobj(Rdiff.get_signature(self.basis))
self.assertTrue(self.signature.lstat())
self.delta.write_from_fileobj(
Rdiff.get_delta_sigrp_hash(self.signature, self.new))
self.assertTrue(self.delta.lstat())
gzip_path = self.delta.path + b".gz"
if os.name == "nt":
# simulate gzip using 7z on Windows
os_system("7z a -tgzip -sdel -bb0 -y %s %s" % (
os.fsdecode(gzip_path), os.fsdecode(self.delta.path)))
else:
os_system(b"gzip %s" % self.delta.path)
os.rename(gzip_path, self.delta.path)
self.delta.setdata()
Rdiff.patch_local(self.basis,
self.delta,
self.output,
delta_compressed=1)
self.assertTrue(rpath.cmp(self.new, self.output))
list(map(rpath.RPath.delete, rplist))
def testWriteDelta(self):
"""Test write delta feature of rdiff"""
if self.delta.lstat():
self.delta.delete()
rplist = [self.basis, self.new, self.delta, self.output]
MakeRandomFile(self.basis.path)
MakeRandomFile(self.new.path)
list(map(rpath.RPath.setdata, [self.basis, self.new]))
self.assertTrue(self.basis.lstat() and self.new.lstat())
Rdiff.write_delta(self.basis, self.new, self.delta)
self.assertTrue(self.delta.lstat())
Rdiff.patch_local(self.basis, self.delta, self.output)
self.assertTrue(rpath.cmp(self.new, self.output))
list(map(rpath.RPath.delete, rplist))
def testWriteDeltaGzip(self):
"""Same as above but delta is written gzipped"""
rplist = [self.basis, self.new, self.delta, self.output]
MakeRandomFile(self.basis.path)
MakeRandomFile(self.new.path)
list(map(rpath.RPath.setdata, [self.basis, self.new]))
self.assertTrue(self.basis.lstat() and self.new.lstat())
delta_gz = rpath.RPath(self.delta.conn, self.delta.path + b".gz")
if delta_gz.lstat():
delta_gz.delete()
Rdiff.write_delta(self.basis, self.new, delta_gz, 1)
self.assertTrue(delta_gz.lstat())
if os.name == "nt":
# simulate gunzip using 7z on Windows
os_system("7z e -tgzip -bb0 -y -o%s %s" % (
os.fsdecode(delta_gz.get_parent_rp()), os.fsdecode(delta_gz)))
os.unlink(delta_gz.path)
else:
os_system(b"gunzip %s" % delta_gz.path)
delta_gz.setdata()
self.delta.setdata()
Rdiff.patch_local(self.basis, self.delta, self.output)
self.assertTrue(rpath.cmp(self.new, self.output))
list(map(rpath.RPath.delete, rplist))
@unittest.skipIf(os.name == "nt", "FIXME fails under Windows")
def testRdiffRename(self):
"""Rdiff replacing original file with patch outfile"""
rplist = [self.basis, self.new, self.delta, self.signature]
for rp in rplist:
if rp.lstat():
rp.delete()
MakeRandomFile(self.basis.path)
MakeRandomFile(self.new.path)
list(map(rpath.RPath.setdata, [self.basis, self.new]))
self.assertTrue(self.basis.lstat() and self.new.lstat())
self.signature.write_from_fileobj(Rdiff.get_signature(self.basis))
self.assertTrue(self.signature.lstat())
self.delta.write_from_fileobj(
Rdiff.get_delta_sigrp_hash(self.signature, self.new))
self.assertTrue(self.delta.lstat())
Rdiff.patch_local(self.basis, self.delta)
self.assertTrue(rpath.cmp(self.basis, self.new))
list(map(rpath.RPath.delete, rplist))
if __name__ == '__main__':
unittest.main()
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