(self, result, *, obj,
itemsize, fmt, readonly,
ndim, shape, strides,
lst, sliced=False, cast=False)
| 778 | self.sizeof_void_p = get_sizeof_void_p() |
| 779 | |
| 780 | def verify(self, result, *, obj, |
| 781 | itemsize, fmt, readonly, |
| 782 | ndim, shape, strides, |
| 783 | lst, sliced=False, cast=False): |
| 784 | # Verify buffer contents against expected values. |
| 785 | if shape: |
| 786 | expected_len = prod(shape)*itemsize |
| 787 | else: |
| 788 | if not fmt: # array has been implicitly cast to unsigned bytes |
| 789 | expected_len = len(lst) |
| 790 | else: # ndim = 0 |
| 791 | expected_len = itemsize |
| 792 | |
| 793 | # Reconstruct suboffsets from strides. Support for slicing |
| 794 | # could be added, but is currently only needed for test_getbuf(). |
| 795 | suboffsets = () |
| 796 | if result.suboffsets: |
| 797 | self.assertGreater(ndim, 0) |
| 798 | |
| 799 | suboffset0 = 0 |
| 800 | for n in range(1, ndim): |
| 801 | if shape[n] == 0: |
| 802 | break |
| 803 | if strides[n] <= 0: |
| 804 | suboffset0 += -strides[n] * (shape[n]-1) |
| 805 | |
| 806 | suboffsets = [suboffset0] + [-1 for v in range(ndim-1)] |
| 807 | |
| 808 | # Not correct if slicing has occurred in the first dimension. |
| 809 | stride0 = self.sizeof_void_p |
| 810 | if strides[0] < 0: |
| 811 | stride0 = -stride0 |
| 812 | strides = [stride0] + list(strides[1:]) |
| 813 | |
| 814 | self.assertIs(result.obj, obj) |
| 815 | self.assertEqual(result.nbytes, expected_len) |
| 816 | self.assertEqual(result.itemsize, itemsize) |
| 817 | self.assertEqual(result.format, fmt) |
| 818 | self.assertIs(result.readonly, readonly) |
| 819 | self.assertEqual(result.ndim, ndim) |
| 820 | self.assertEqual(result.shape, tuple(shape)) |
| 821 | if not (sliced and suboffsets): |
| 822 | self.assertEqual(result.strides, tuple(strides)) |
| 823 | self.assertEqual(result.suboffsets, tuple(suboffsets)) |
| 824 | |
| 825 | if isinstance(result, ndarray) or is_memoryview_format(fmt): |
| 826 | rep = result.tolist() if fmt else result.tobytes() |
| 827 | self.assertEqual(rep, lst) |
| 828 | |
| 829 | if not fmt: # array has been cast to unsigned bytes, |
| 830 | return # the remaining tests won't work. |
| 831 | |
| 832 | # PyBuffer_GetPointer() is the definition how to access an item. |
| 833 | # If PyBuffer_GetPointer(indices) is correct for all possible |
| 834 | # combinations of indices, the buffer is correct. |
| 835 | # |
| 836 | # Also test tobytes() against the flattened 'lst', with all items |
| 837 | # packed to bytes. |
no test coverage detected