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gzip: add tests for memoryview with itemsize > 1 byte #141208

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gzip: add tests for memoryview with itemsize > 1 byte #141208

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3a052f9
gzip: add tests that an array with items larger than one byte correct…
dstndstn Nov 7, 2025
f25ce3b
Merge branch 'main' into add-gzip-test-memoryview
dstndstn Nov 7, 2025
dff2e60
oops, actually make new tests pass
dstndstn Nov 7, 2025
80d36ae
Merge branch 'add-gzip-test-memoryview' of github.com:dstndstn/cpytho…
dstndstn Nov 7, 2025
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13 changes: 13 additions & 0 deletions Lib/test/test_gzip.py
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Original file line number Diff line number Diff line change
Expand Up @@ -31,6 +31,8 @@
/* See http://www.winimage.com/zLibDll for Windows */
"""

# A single unsigned short - for testing memoryviews with itemsize > 1
data3 = array.array('H', [1])

TEMPDIR = os.path.abspath(os_helper.TESTFN) + '-gzdir'

Expand Down Expand Up @@ -101,6 +103,7 @@ def test_write_memoryview(self):
m = memoryview(bytes(range(256)))
data = m.cast('B', shape=[8,8,4])
self.write_and_read_back(data)
self.write_and_read_back(memoryview(data3))

def test_write_bytearray(self):
self.write_and_read_back(bytearray(data1 * 50))
Expand Down Expand Up @@ -795,6 +798,16 @@ def test_decompress_missing_trailer(self):
compressed_data = gzip.compress(data1)
self.assertRaises(EOFError, gzip.decompress, compressed_data[:-8])

def roundtrip_compress_decompress(self, data):
compressed_data = gzip.compress(data)
decompressed_data = gzip.decompress(compressed_data)
self.assertEqual(decompressed_data, bytes(data))

def test_compress_decompress(self):
self.roundtrip_compress_decompress(data1)
self.roundtrip_compress_decompress(data2)
self.roundtrip_compress_decompress(data3)

def test_read_truncated(self):
data = data1*50
# Drop the CRC (4 bytes) and file size (4 bytes).
Expand Down
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