8000 [3.14] gh-131357: Add tests for zero-sized bytes objects in test_bytes.py (GH-134234) by miss-islington · Pull Request #134378 · python/cpython · GitHub
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[3.14] gh-131357: Add tests for zero-sized bytes objects in test_bytes.py (GH-134234) #134378

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Merged
merged 1 commit into from
May 20, 2025
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[3.14] gh-131357: Add tests for zero-sized bytes objects in test_bytes.py (GH-134234) #134378

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5 changes: 5 additions & 0 deletions Lib/test/test_capi/test_bytes.py
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Original file line number Diff line number Diff line change
Expand Up @@ -22,6 +22,7 @@ def test_check(self):
# Test PyBytes_Check()
check = _testlimitedcapi.bytes_check
self.assertTrue(check(b'abc'))
self.assertTrue(check(b''))
self.assertFalse(check('abc'))
self.assertFalse(check(bytearray(b'abc')))
self.assertTrue(check(BytesSubclass(b'abc')))
Expand All @@ -36,6 +37,7 @@ def test_checkexact(self):
# Test PyBytes_CheckExact()
check = _testlimitedcapi.bytes_checkexact
self.assertTrue(check(b'abc'))
self.assertTrue(check(b''))
self.assertFalse(check('abc'))
self.assertFalse(check(bytearray(b'abc')))
self.assertFalse(check(BytesSubclass(b'abc')))
Expand Down Expand Up @@ -108,6 +110,7 @@ def test_asstring(self):

self.assertEqual(asstring(b'abc', 4), b'abc\0')
self.assertEqual(asstring(b'abc\0def', 8), b'abc\0def\0')
self.assertEqual(asstring(b'', 1), b'\0')
self.assertRaises(TypeError, asstring, 'abc', 0)
self.assertRaises(TypeError, asstring, object(), 0)

Expand All @@ -120,6 +123,7 @@ def test_asstringandsize(self):

self.assertEqual(asstringandsize(b'abc', 4), (b'abc\0', 3))
self.assertEqual(asstringandsize(b'abc\0def', 8), (b'abc\0def\0', 7))
self.assertEqual(asstringandsize(b'', 1), (b'\0', 0))
self.assertEqual(asstringandsize_null(b'abc', 4), b'abc\0')
self.assertRaises(ValueError, asstringandsize_null, b'abc\0def', 8)
self.assertRaises(TypeError, asstringandsize, 'abc', 0)
Expand Down Expand Up @@ -163,6 +167,7 @@ def test_concat(self, concat=None):
self.assertEqual(concat(b'', bytearray(b'def')), b'def')
self.assertEqual(concat(memoryview(b'xabcy')[1:4], b'def'), b'abcdef')
self.assertEqual(concat(b'abc', memoryview(b'xdefy')[1:4]), b'abcdef')
self.assertEqual(concat(b'', b''), b'')

self.assertEqual(concat(b'abc', b'def', True), b'abcdef')
self.assertEqual(concat(b'abc', bytearray(b'def'), True), b'abcdef')
Expand Down
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