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#!/usr/bin/env python3

import io  # for python 2
import json
import os
import sys
import unittest

# Allow direct execution
import os
sys.path.append(os.path.dirname(os.path.dirname(os.path.abspath(__file__))))

import youtube_dl.InfoExtractors

HEADER = u'''#!/usr/bin/env python

# DO NOT EDIT THIS FILE BY HAND!
# It is auto-generated from tests.json and gentests.py.

import hashlib
import io
import os
import json
import unittest
import sys
import socket

# Allow direct execution
import os
sys.path.append(os.path.dirname(os.path.dirname(os.path.abspath(__file__))))

import youtube_dl.FileDownloader
import youtube_dl.InfoExtractors
from youtube_dl.utils import *

# General configuration (from __init__, not very elegant...)
jar = compat_cookiejar.CookieJar()
cookie_processor = compat_urllib_request.HTTPCookieProcessor(jar)
proxy_handler = compat_urllib_request.ProxyHandler()
opener = compat_urllib_request.build_opener(proxy_handler, cookie_processor, YoutubeDLHandler())
compat_urllib_request.install_opener(opener)
socket.setdefaulttimeout(300) # 5 minutes should be enough (famous last words)

class FileDownloader(youtube_dl.FileDownloader):
    def __init__(self, *args, **kwargs):
        youtube_dl.FileDownloader.__init__(self, *args, **kwargs)
        self.to_stderr = self.to_screen

def _file_md5(fn):
    with open(fn, 'rb') as f:
        return hashlib.md5(f.read()).hexdigest()
try:
    _skip_unless = unittest.skipUnless
except AttributeError: # Python 2.6
    def _skip_unless(cond, reason='No reason given'):
        def resfunc(f):
            # Start the function name with test to appease nosetests-2.6
            def test_wfunc(*args, **kwargs):
                if cond:
                    return f(*args, **kwargs)
                else:
                    print('Skipped test')
                    return
            return test_wfunc
        return resfunc
_skip = lambda *args, **kwargs: _skip_unless(False, *args, **kwargs)

class DownloadTest(unittest.TestCase):
    PARAMETERS_FILE = os.path.join(os.path.dirname(os.path.abspath(__file__)), "parameters.json")

    def setUp(self):
        # Clear old files
        self.tearDown()

        with io.open(self.PARAMETERS_FILE, encoding='utf-8') as pf:
            self.parameters = json.load(pf)
'''

FOOTER = u'''

if __name__ == '__main__':
    unittest.main()
'''

DEF_FILE = os.path.join(os.path.dirname(os.path.abspath(__file__)), 'tests.json')
TEST_FILE = os.path.join(os.path.dirname(os.path.abspath(__file__)), 'test_download.py')

def gentests():
    with io.open(DEF_FILE, encoding='utf-8') as deff:
        defs = json.load(deff)
    with io.open(TEST_FILE, 'w', encoding='utf-8') as testf:
        testf.write(HEADER)
        spaces = ' ' * 4
        write = lambda l: testf.write(spaces + l + u'\n')

        for d in defs:
            name = d['name']
            ie = getattr(youtube_dl.InfoExtractors, name + 'IE')
            testf.write(u'\n')
            write('@_skip_unless(youtube_dl.InfoExtractors.' + name + 'IE._WORKING, "IE marked as not _WORKING")')
            if not d['file']:
                write('@_skip("No output file specified")')
            elif 'skip' in d:
                write('@_skip(' + repr(d['skip']) + ')')
            write('def test_' + name + '(self):')
            write('    filename = ' + repr(d['file']))
            write('    params = self.parameters')
            for p in d.get('params', {}):
                write('    params["' + p + '"] = ' + repr(d['params'][p]))
            write('    fd = FileDownloader(params)')
            write('    fd.add_info_extractor(youtube_dl.InfoExtractors.' + name + 'IE())')
            for ien in d.get('addIEs', []):
                write('    fd.add_info_extractor(youtube_dl.InfoExtractors.' + ien + 'IE())')
            write('    fd.download([' + repr(d['url']) + '])')
            write('    self.assertTrue(os.path.exists(filename))')
            if 'size' in d:
                write('    self.assertEqual(os.path.getsize(filename), ' + repr(d['size']) + ')')
            if 'md5' in d:
                write('    md5_for_file = _file_md5(filename)')
                write('    self.assertEqual(md5_for_file, ' + repr(d['md5']) + ')')

        testf.write(u'\n\n')
        write('def tearDown(self):')
        for d in defs:
            if d['file']:
                write('    if os.path.exists(' + repr(d['file']) + '):')
                write('        os.remove(' + repr(d['file']) + ')')
            else:
                write('    # No file specified for ' + d['name'])
        testf.write(u'\n')
        testf.write(FOOTER)

if __name__ == '__main__':
    gentests()