def test_text_file(self):

url = "https://docs.python.org/3/library/io.html#module-io"

name = "text.htm"

f = SeekableHTTPFile(url, name, debug=True)

f.seek(-200, io.SEEK_END)

pos = f.tell()

self.assertEqual(pos, f.content_length - 200)

text = f.read(50)

self.assertIsInstance(text, bytes)

self.assertEqual(len(text), 50)

self.assertEqual(name, f.name)

def test_non_seekable(self):

url = "https://github.com/kennethreitz/requests/archive/v2.8.1.zip"

f = SeekableHTTPFile(url, debug=True)

self.assertEqual(f.name, "requests-2.8.1.zip")

self.assertFalse(f.seekable())

with self.assertRaises(OSError):

f.seek(5)

def test_zip(self):

url = "https://www.python.org/ftp/python/3.5.0/python-3.5.0-embed-amd64.zip"

f = SeekableHTTPFile(url, debug=True)

zf = ZipFile(f)

zf.printdir()

filelist = set(zf.namelist())

self.assertIn("python.exe", filelist)

pyenv = zf.read("pyvenv.cfg")

self.assertEqual(pyenv.rstrip(), b"applocal = true")

def test_scihub_product(self):

if not scihub_credentials:

self.skipTest("SciHub username and password must be provided for testing")

return

# One of the smallest files on SciHub

url = "https://scihub.copernicus.eu/dhus/odata/v1/Products('8dfa1139-6643-4e74-b16f-5226d438d7ed')/$value"

f = SeekableHTTPFile(url, repeat_time=1, debug=True)

zf = ZipFile(f)

namelist = zf.namelist()

print(namelist)

target = next(filter(lambda x: x.endswith("manifest.safe"), namelist))

manifest = zf.read(target)

self.assertTrue(manifest.startswith(b'<?xml version="1.0" encoding="UTF-8"?>'))