# Tests of the full ZIP64 functionality of zipfile

# The test_support.requires call is the only reason for keeping this separate

# from test_zipfile

from test import test_support

# XXX(nnorwitz): disable this test by looking for extra largfile resource

# which doesn't exist.  This test takes over 30 minutes to run in general

# and requires more disk space than most of the buildbots.

test_support.requires(

        'extralargefile',

        'test requires loads of disk-space bytes and a long time to run'

    )

# We can test part of the module without zlib.

try:

    import zlib

except ImportError:

    zlib = None

import zipfile, os, unittest

import time

import sys

from StringIO import StringIO

from tempfile import TemporaryFile

from test.test_support import TESTFN, run_unittest

TESTFN2 = TESTFN + "2"

# How much time in seconds can pass before we print a 'Still working' message.

_PRINT_WORKING_MSG_INTERVAL = 5 * 60

class TestsWithSourceFile(unittest.TestCase):

    def setUp(self):

        # Create test data.

        # xrange() is important here -- don't want to create immortal space

        # for a million ints.

        line_gen = ("Test of zipfile line %d." % i for i in xrange(1000000))

        self.data = '\n'.join(line_gen)

        # And write it to a file.

        fp = open(TESTFN, "wb")

        fp.write(self.data)

        fp.close()

    def zipTest(self, f, compression):

        # Create the ZIP archive.

        zipfp = zipfile.ZipFile(f, "w", compression, allowZip64=True)

        # It will contain enough copies of self.data to reach about 6GB of

        # raw data to store.

        filecount = 6*1024**3 // len(self.data)

        next_time = time.time() + _PRINT_WORKING_MSG_INTERVAL

        for num in range(filecount):

            zipfp.writestr("testfn%d" % num, self.data)

            # Print still working message since this test can be really slow

            if next_time <= time.time():

                next_time = time.time() + _PRINT_WORKING_MSG_INTERVAL

                print >>sys.__stdout__, (

                   '  zipTest still writing %d of %d, be patient...' %

                   (num, filecount))

                sys.__stdout__.flush()

        zipfp.close()

        # Read the ZIP archive

        zipfp = zipfile.ZipFile(f, "r", compression)

        for num in range(filecount):

            self.assertEqual(zipfp.read("testfn%d" % num), self.data)

            # Print still working message since this test can be really slow

            if next_time <= time.time():

                next_time = time.time() + _PRINT_WORKING_MSG_INTERVAL

                print >>sys.__stdout__, (

                   '  zipTest still reading %d of %d, be patient...' %

                   (num, filecount))

                sys.__stdout__.flush()

        zipfp.close()

    def testStored(self):

        # Try the temp file first.  If we do TESTFN2 first, then it hogs

        # gigabytes of disk space for the duration of the test.

        for f in TemporaryFile(), TESTFN2:

            self.zipTest(f, zipfile.ZIP_STORED)

    if zlib:

        def testDeflated(self):

            # Try the temp file first.  If we do TESTFN2 first, then it hogs

            # gigabytes of disk space for the duration of the test.

            for f in TemporaryFile(), TESTFN2:

                self.zipTest(f, zipfile.ZIP_DEFLATED)

    def tearDown(self):

        for fname in TESTFN, TESTFN2:

            if os.path.exists(fname):

                os.remove(fname)

def test_main():

    run_unittest(TestsWithSourceFile)

if __name__ == "__main__":

    test_main()