PYTHON-5289 Validate ignored bits are 0 on write for bson.BinaryVector #2397
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…s will sync up with specifications when pull/1812 is merged.
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Failing tests are unrelated. |
| @@ -522,6 +530,12 @@ def as_vector(self) -> BinaryVector: | |||
| dtype_format = "B" | |||
| format_string = f"<{n_values}{dtype_format}" | |||
| unpacked_uint8s = list(struct.unpack_from(format_string, self, position)) | |||
| if padding and n_values and unpacked_uint8s[-1] & (1 << padding) - 1 != 0: | |||
| warnings.warn( | |||
| "Vector has a padding P, but bits in the final byte lower than P are non-zero. In the next major version, they must be zero.", | |||
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So in the next major version, this warning will become an error to match the behavior in from_vector?
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Yes. We make the significant change (exception not warning) in the next major change and document in changelog and api. The ticket for that is PYTHON-5280 and has 5.0 as its fix version.
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Could you add "pymongo version 5.0" rather than "the next major version". This helps should them the version (5.0) and that the warning is coming from pymongo.
| except Exception as exc: | ||
| self.assertIsInstance(exc, ValueError) | ||
| else: | ||
| self.fail("Failed to raise an exception.") |
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This assertion should use assertRaises.
| @@ -522,6 +530,12 @@ def as_vector(self) -> BinaryVector: | |||
| dtype_format = "B" | |||
| format_string = f"<{n_values}{dtype_format}" | |||
| unpacked_uint8s = list(struct.unpack_from(format_string, self, position)) | |||
| if padding and n_values and unpacked_uint8s[-1] & (1 << padding) - 1 != 0: | |||
| warnings.warn( | |||
| "Vector has a padding P, but bits in the final byte lower than P are non-zero. In the next major version, they must be zero.", | |||
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Could you add "pymongo version 5.0" rather than "the next major version". This helps should them the version (5.0) and that the warning is coming from pymongo.
This is the implementation of the spec changes applied in specifications/pull/1812.