(self)
| 472 | |
| 473 | @unittest.skipUnless(hasattr(os, 'copy_file_range'), 'test needs os.copy_file_range()') |
| 474 | def test_copy_file_range_offset(self): |
| 475 | TESTFN4 = os_helper.TESTFN + ".4" |
| 476 | data = b'0123456789' |
| 477 | bytes_to_copy = 6 |
| 478 | in_skip = 3 |
| 479 | out_seek = 5 |
| 480 | |
| 481 | create_file(os_helper.TESTFN, data) |
| 482 | self.addCleanup(os_helper.unlink, os_helper.TESTFN) |
| 483 | |
| 484 | in_file = open(os_helper.TESTFN, 'rb') |
| 485 | self.addCleanup(in_file.close) |
| 486 | in_fd = in_file.fileno() |
| 487 | |
| 488 | out_file = open(TESTFN4, 'w+b') |
| 489 | self.addCleanup(os_helper.unlink, TESTFN4) |
| 490 | self.addCleanup(out_file.close) |
| 491 | out_fd = out_file.fileno() |
| 492 | |
| 493 | try: |
| 494 | i = os.copy_file_range(in_fd, out_fd, bytes_to_copy, |
| 495 | offset_src=in_skip, |
| 496 | offset_dst=out_seek) |
| 497 | except OSError as e: |
| 498 | # Handle the case in which Python was compiled |
| 499 | # in a system with the syscall but without support |
| 500 | # in the kernel. |
| 501 | if e.errno != errno.ENOSYS: |
| 502 | raise |
| 503 | self.skipTest(e) |
| 504 | else: |
| 505 | # The number of copied bytes can be less than |
| 506 | # the number of bytes originally requested. |
| 507 | self.assertIn(i, range(0, bytes_to_copy+1)); |
| 508 | |
| 509 | with open(TESTFN4, 'rb') as in_file: |
| 510 | read = in_file.read() |
| 511 | # seeked bytes (5) are zero'ed |
| 512 | self.assertEqual(read[:out_seek], b'\x00'*out_seek) |
| 513 | # 012 are skipped (in_skip) |
| 514 | # 345678 are copied in the file (in_skip + bytes_to_copy) |
| 515 | self.assertEqual(read[out_seek:], |
| 516 | data[in_skip:in_skip+i]) |
| 517 | |
| 518 | @unittest.skipUnless(hasattr(os, 'splice'), 'test needs os.splice()') |
| 519 | def test_splice_invalid_values(self): |
nothing calls this directly
no test coverage detected