Jul 24, 2024 · Jul 24, 2024 · Jul 24, 2024
diff --git a/Lib/test/test_largefile.py b/Lib/test/test_largefile.py
            f.truncate(1)
            self.assertEqual(f.tell(), 0)       # else pointer moved
            f.seek(0)
            # Verify readall on a truncated file is well behaved. read()
            # without a size can be unbounded, this should get just the byte
            # that remains.
            self.assertEqual(len(f.read()), 1)  # else wasn't truncated

    def test_seekable(self):
                f.seek(pos)
                self.assertTrue(f.seekable())

    @bigmemtest(size=size, memuse=2, dry_run=False)
    def test_seek_readall(self, _size):
        # Seek which doesn't change position should readall successfully.
        with self.open(TESTFN, 'rb') as f:
            self.assertEqual(f.seek(0, os.SEEK_CUR), 0)
            self.assertEqual(len(f.read()), size + 1)

        # Seek which changes (or might change) position should readall
        # successfully.
        with self.open(TESTFN, 'rb') as f:
            self.assertEqual(f.seek(20, os.SEEK_SET), 20)
            self.assertEqual(len(f.read()), size - 19)

        with self.open(TESTFN, 'rb') as f:
            self.assertEqual(f.seek(-3, os.SEEK_END), size - 2)
            self.assertEqual(len(f.read()), 3)

 def skip_no_disk_space(path, required):
    def decorator(fun):
Original file line number	Diff line number	Diff line change
Expand Up		@@ -141,6 +141,9 @@ def test_truncate(self):
		f.truncate(1)
		self.assertEqual(f.tell(), 0) # else pointer moved
		f.seek(0)
		# Verify readall on a truncated file is well behaved. read()
		# without a size can be unbounded, this should get just the byte
		# that remains.
		self.assertEqual(len(f.read()), 1) # else wasn't truncated

		def test_seekable(self):
Expand All		@@ -151,6 +154,22 @@ def test_seekable(self):
		f.seek(pos)
		self.assertTrue(f.seekable())

		@bigmemtest(size=size, memuse=2, dry_run=False)
		def test_seek_readall(self, _size):
		# Seek which doesn't change position should readall successfully.
		with self.open(TESTFN, 'rb') as f:
		self.assertEqual(f.seek(0, os.SEEK_CUR), 0)
		self.assertEqual(len(f.read()), size + 1)

		# Seek which changes (or might change) position should readall
		# successfully.
		with self.open(TESTFN, 'rb') as f:
		self.assertEqual(f.seek(20, os.SEEK_SET), 20)
		self.assertEqual(len(f.read()), size - 19)

		with self.open(TESTFN, 'rb') as f:
		self.assertEqual(f.seek(-3, os.SEEK_END), size - 2)
		self.assertEqual(len(f.read()), 3)

		def skip_no_disk_space(path, required):
		def decorator(fun):
Expand Down