Fix: default flags field for transaction frozen class should be None #821
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WalkthroughThe changes update the handling of the Changes
Sequence Diagram(s)sequenceDiagram
participant User
participant Transaction
participant Serializer
User->>Transaction: Create Transaction (flags=None or flags set)
Transaction->>Serializer: to_dict()
alt flags is not None
Serializer->>User: Serialized dict includes Flags
else flags is None
Serializer->>User: Serialized dict omits Flags
end
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Actionable comments posted: 1
🔭 Outside diff range comments (2)
xrpl/models/transactions/transaction.py (2)
294-306:⚠️ Potential issueAdd explicit handling for None in _flags_to_int method
The
_flags_to_intmethod doesn't explicitly handle the case whereflagsisNone. With the default value changing from0toNone, this could lead to errors when this method is called.Apply this fix to explicitly handle
None:def _flags_to_int(self: Self) -> int: + if self.flags is None: + return 0 if isinstance(self.flags, int): return self.flags check_false_flag_definition(tx_type=self.transaction_type, tx_flags=self.flags) if isinstance(self.flags, dict): return self._iter_to_int( lst=interface_to_flag_list( tx_type=self.transaction_type, tx_flags=self.flags, ) ) return self._iter_to_int(lst=self.flags)
361-385:⚠️ Potential issueAdd explicit handling for None in has_flag method
The
has_flagmethod raises an exception ifflagsis not an int, dict, or list. With the default value changing from0toNone, this would raise an exception when checking flags for transactions with default values.Apply this fix to explicitly handle
None:def has_flag(self: Self, flag: int) -> bool:+ if self.flags is None: + return False if isinstance(self.flags, int): return self.flags & flag != 0 elif isinstance(self.flags, dict): return flag in interface_to_flag_list( tx_type=self.transaction_type, tx_flags=self.flags, ) elif isinstance(self.flags, list): return flag in self.flags else: raise XRPLModelException("self.flags is not an int, dict, or list")
🧹 Nitpick comments (1)
xrpl/models/transactions/transaction.py (1)
1-458: Update documentation for flags behavior changeThe change from default value of
0toNonefor flags is significant enough to warrant documentation updates, especially since it affects how the absence of flags is represented.Consider updating the docstring for the
flagsfield to explicitly mention thatNonerepresents no flags:""" A List of flags, or a bitwise map of flags, modifying this transaction's behavior. See `Flags Field <https://xrpl.org/transaction-common-fields.html#flags-field>`_ for more details. +When None, indicates no flags are set. """
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xrpl/models/transactions/transaction.py(1 hunks)
🔇 Additional comments (1)
xrpl/models/transactions/transaction.py (1)
269-282:❓ Verification inconclusive
Verify to_dict method behavior with None flags
The
to_dictmethod calls_flags_to_int()which may not handleNoneproperly. It's important to ensure this method works correctly with the new default value.Let's verify this with a test:
🏁 Script executed:
#!/bin/bash # Check if there are any tests for to_dict with None flags rg -A 5 -B 5 "to_dict.*flags.*None" --glob "test_*.py" # Check existing tests for to_dict method rg -A 10 -B 10 "def test.*to_dict" --glob "test_*.py"Length of output: 7923
Action: Verify
_flags_to_intbehavior when flags isNoneIt looks like our existing tests cover flag conversion when a list of flags is provided, but there isn’t any test verifying the case where flags might be
None. Please confirm that_flags_to_intgracefully handles aNonevalue (for example, by returning0or another intended default). If not, consider updating the implementation and adding a corresponding test intests/unit/models/transactions/test_transaction.pyto cover this scenario.
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Why do you want them to be |
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The main problem happens when trying to "serialise" a transactions a = Payment(
account=some_account,
amount=some_amount,
destination=some_destination,
fee=some_fee,
sequence=some_sequence,
)
b = a.to_dict()
c = "flags" in transaction_dict # expected: false, actually trueAlternatively to_dict serialisation can be changed. But I think the proposed change matches the docs and python typing better. |
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Pull Request Overview
This PR fixes a bug by updating the default value of the flags field in the transaction frozen class from 0 to None to better reflect the intended behavior.
- Changed the default value of flags to None
- Updated the type hint to Optional[...] to accommodate the new default
Comments suppressed due to low confidence (1)
xrpl/models/transactions/transaction.py:203
- Verify that all transaction logic properly handles a None value for the flags field to avoid potential runtime issues.
flags: Optional[Union[Dict[str, bool], int, List[int]]] = None
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@AvbrehtLuka I think using this declaration would be more accurate: Currently the tests are failing, can you please address the Unit tests, integration tests, and snippet tests after making this change? |
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Appears to be a problem with a helper function: |
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Agreed, another option would be to only update the to_dict method to not include flags when none are set, and keep the current typing. What would you prefer? |
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I would prefer updating the helper function. Less confusing that way IMO. |
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@LukaAvbreht Thanks for proposing the fix. Can you please look into the failing test cases? Thanks! |
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Yes! |
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Actionable comments posted: 0
🧹 Nitpick comments (1)
xrpl/models/flags.py (1)
91-93: Added early return for None flagsThis change is critical for the PR's goal - it skips validation when flags is None, allowing transactions to be serialized without the flags field. There's a small typo in the comment "flasgs" instead of "flags", but it doesn't affect functionality.
Fix the typo in the comment:
- # No flasgs were set, so we can skip the check + # No flags were set, so we can skip the check
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tests/integration/transactions/test_payment.py(0 hunks)tests/unit/core/binarycodec/test_main.py(1 hunks)tests/unit/models/test_base_model.py(1 hunks)tests/unit/models/transactions/test_pseudo_transactions.py(4 hunks)tests/unit/models/transactions/test_transaction.py(1 hunks)tests/unit/models/x-codec-fixtures.json(0 hunks)xrpl/models/flags.py(3 hunks)xrpl/models/transactions/transaction.py(3 hunks)
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- tests/unit/models/x-codec-fixtures.json
- tests/integration/transactions/test_payment.py
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- tests/unit/core/binarycodec/test_main.py
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- xrpl/models/transactions/transaction.py
🔇 Additional comments (8)
tests/unit/models/transactions/test_transaction.py (1)
76-76: Hash value updated to reflect transaction without Flags fieldThe hash value is updated due to the removal of the
"Flags": 0entry from theoffer_create_dict. This change aligns with the PR's goal of modifying the default flags field from 0 to None, ensuring the serialized transaction doesn't include Flags when not explicitly set.tests/unit/models/transactions/test_pseudo_transactions.py (4)
37-37: Removed "Flags": 0 from test dictionaryThe test has been updated to reflect that pseudo transactions no longer include a default
"Flags": 0entry when serialized, which is consistent with the PR's goal of changing the default flags value from 0 to None.
64-64: Removed "Flags": 0 from SetFee test dictionaryThe test for SetFee pseudo transactions has also been updated to remove the default flags field, ensuring consistency with the updated Transaction model behavior.
88-88: Removed "Flags": 0 from post-amendment SetFee test dictionaryThe test for post-amendment SetFee pseudo transactions correctly removes the default flags field to align with the updated transaction serialization behavior.
111-111: Removed "Flags": 0 from UNLModify test dictionaryThe test for UNLModify pseudo transactions consistently removes the default flags field, ensuring that all test cases reflect the updated Transaction model behavior where flags=None by default.
xrpl/models/flags.py (2)
4-4: Added Optional type for flagsUpdated imports to include
Optionalfromtyping, which is necessary to support the None value for flags.
77-77: Updated tx_flags type annotation to include NoneThe type annotation for
tx_flagsnow appropriately includesOptionaland expanded the union type to coverintexplicitly. This change allows the flags field to be None or a simple integer instead of only supporting dictionaries or lists.tests/unit/models/test_base_model.py (1)
127-128: Updated error message to include NoneType as valid flags typeThe expected error message now correctly includes
NoneTypein the list of allowed types for the flags field, ensuring that tests won't break due to the added support for None flags.
| # if "flags" in prepared_dict: | ||
| # del prepared_dict["flags"] | ||
| flags = self._flags_to_int() | ||
| if self.flags is None or flags == 0: |
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nit: it seems like if self.flags is None, then line 284 flags will evaluate to 0 anyways based on _iter_to_int, so you wouldn't need both of these checks
| flags = self._flags_to_int() | ||
| if self.flags is None or flags == 0: | ||
| if "flags" in prepared_dict: | ||
| del prepared_dict["flags"] |
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nit: can you add a comment for future reference on why we need to delete flags here and ensure it is None in the returned dict?
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@LukaAvbreht thanks for tackling this issue. Overall LGTM with some minor nits. Pipeline is currently failing due to a typing issue, should be good to go after fixing that |
| payment_txn = Payment.from_xrpl(payment_tx_json) | ||
| payment = payment_txn.to_xrpl() | ||
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| self.assertTrue("Flags" in payment) |
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newline at the end of files
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Actionable comments posted: 0
♻️ Duplicate comments (1)
tests/unit/models/transactions/test_payment.py (1)
248-248: Add newline at end of file.The file should end with a newline character.
self.assertTrue("Flags" in payment) +
🧹 Nitpick comments (1)
CHANGELOG.md (1)
14-14: Fix spelling errors in the changelog entry.The entry contains several typos:
- "dafault" should be "default"
- "bahaviour" should be "behavior"
- "thransactions" should be "transactions"
Also, you should add a comma after "By default" for better readability.
-Fixed the dafault bahaviour of flags field when preparing thransactions. By default flags are not part of the transaction if not explicitly provided. +Fixed the default behavior of flags field when preparing transactions. By default, flags are not part of the transaction if not explicitly provided.🧰 Tools
🪛 LanguageTool
[uncategorized] ~14-~14: You might be missing the article “the” here.
Context: ...client - Fixed the dafault bahaviour of flags field when preparing thransactions. By ...(AI_EN_LECTOR_MISSING_DETERMINER_THE)
[uncategorized] ~14-~14: Did you mean: “By default,”?
Context: ...ags field when preparing thransactions. By default flags are not part of the transaction i...(BY_DEFAULT_COMMA)
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CHANGELOG.md(1 hunks)tests/unit/models/test_base_model.py(1 hunks)tests/unit/models/transactions/test_payment.py(1 hunks)tests/unit/models/transactions/test_pseudo_transactions.py(4 hunks)xrpl/models/flags.py(3 hunks)xrpl/models/transactions/pseudo_transactions/enable_amendment.py(1 hunks)xrpl/models/transactions/pseudo_transactions/unl_modify.py(2 hunks)xrpl/models/transactions/transaction.py(4 hunks)
🚧 Files skipped from review as they are similar to previous changes (6)
- xrpl/models/transactions/pseudo_transactions/unl_modify.py
- tests/unit/models/transactions/test_pseudo_transactions.py
- xrpl/models/transactions/pseudo_transactions/enable_amendment.py
- xrpl/models/flags.py
- tests/unit/models/test_base_model.py
- xrpl/models/transactions/transaction.py
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CHANGELOG.md
[uncategorized] ~14-~14: You might be missing the article “the” here.
Context: ...client - Fixed the dafault bahaviour of flags field when preparing thransactions. By ...
(AI_EN_LECTOR_MISSING_DETERMINER_THE)
[uncategorized] ~14-~14: Did you mean: “By default,”?
Context: ...ags field when preparing thransactions. By default flags are not part of the transaction i...
(BY_DEFAULT_COMMA)
🔇 Additional comments (1)
tests/unit/models/transactions/test_payment.py (1)
193-248: Test coverage looks good!The added tests thoroughly verify the new behavior of the flags field in Payment transactions:
- Test with explicitly set zero flags
- Test with direct creation and zero flags
- Test with no flags (ensuring they're omitted)
- Test with non-zero flags
These tests align perfectly with the PR objective of changing the default flags field from 0 to None.
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fixed typos and squashed commits. Please take a look |
…RPLF#821) fix: default flags field for transaction frozen class should be None Co-authored-by: Luka Avbreht <l.avbreht@gmail.com>
High Level Overview of Change
By default flags field in transaction frozen class should be None rather than 0
Context of Change
When creating transactions using the frozen classes, the flags should not be
Type of Change
Did you update CHANGELOG.md?
Test Plan
Current tests
Future Tasks
No future tasks