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import io
import os
import tempfile
import unittest
import zstandard as zstd
class TestOpen(unittest.TestCase):
def test_write_binary_fileobj(self):
buffer = io.BytesIO()
fh = zstd.open(buffer, "wb")
fh.write(b"foo" * 1024)
self.assertFalse(fh.closed)
self.assertFalse(buffer.closed)
fh.close()
self.assertTrue(fh.closed)
self.assertFalse(buffer.closed)
def test_write_binary_filename(self):
with tempfile.TemporaryDirectory() as td:
p = os.path.join(td, "testfile")
fh = zstd.open(p, "wb")
fh.write(b"foo" * 1024)
self.assertFalse(fh.closed)
fh.close()
self.assertTrue(fh.closed)
def test_write_text_fileobj(self):
buffer = io.BytesIO()
fh = zstd.open(buffer, "w")
fh.write("foo")
fh.write("foo")
def test_write_text_filename(self):
with tempfile.TemporaryDirectory() as td:
p = os.path.join(td, "testfile")
fh = zstd.open(p, "w")
self.assertIsInstance(fh, io.TextIOWrapper)
fh.write("foo\n")
fh.write("bar\n")
fh.close()
self.assertTrue(fh.closed)
with zstd.open(p, "r") as fh:
self.assertEqual(fh.read(), "foo\nbar\n")
def test_read_binary_fileobj(self):
cctx = zstd.ZstdCompressor()
buffer = io.BytesIO(cctx.compress(b"foo" * 1024))
fh = zstd.open(buffer, "rb")
self.assertEqual(fh.read(6), b"foofoo")
self.assertFalse(fh.closed)
self.assertFalse(buffer.closed)
fh.close()
self.assertTrue(fh.closed)
self.assertFalse(buffer.closed)
buffer = io.BytesIO(cctx.compress(b"foo" * 1024))
with zstd.open(buffer, "rb", closefd=True) as fh:
self.assertEqual(fh.read(), b"foo" * 1024)
self.assertTrue(fh.closed)
self.assertTrue(buffer.closed)
def test_read_binary_filename(self):
with tempfile.TemporaryDirectory() as td:
p = os.path.join(td, "testfile")
with open(p, "wb") as fh:
cctx = zstd.ZstdCompressor()
fh.write(cctx.compress(b"foo" * 1024))
fh = zstd.open(p, "rb")
self.assertEqual(fh.read(6), b"foofoo")
self.assertEqual(len(fh.read()), 1024 * 3 - 6)
self.assertFalse(fh.closed)
fh.close()
self.assertTrue(fh.closed)
def test_read_text_fileobj(self):
cctx = zstd.ZstdCompressor()
buffer = io.BytesIO(cctx.compress(b"foo\n" * 1024))
fh = zstd.open(buffer, "r")
self.assertIsInstance(fh, io.TextIOWrapper)
self.assertEqual(fh.readline(), "foo\n")
fh.close()
self.assertTrue(fh.closed)
self.assertFalse(buffer.closed)
def test_read_text_filename(self):
with tempfile.TemporaryDirectory() as td:
p = os.path.join(td, "testfile")
cctx = zstd.ZstdCompressor()
with open(p, "wb") as fh:
fh.write(cctx.compress(b"foo\n" * 1024))
fh = zstd.open(p, "r")
self.assertEqual(fh.read(4), "foo\n")
self.assertEqual(fh.readline(), "foo\n")
self.assertFalse(fh.closed)
fh.close()
self.assertTrue(fh.closed)
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