ruff/crates/ty_python_semantic/resources/mdtest
Carl Meyer 089f5152f6
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[ty] Fix mixed tuple subtyping (#18852)
## Summary

The code in the `Variable` branch of
`VariableLengthTupleSpec::has_relation_to` made the incorrect assumption
that if you zip two possibly-different-length iterators together and
iterate over the resulting zip iterator, the original two iterators will
only have their common elements consumed. But in fact, the zip iterator
detects that it is done when it receives a `None` from one iterator and
`Some()` element from the other iterator, which means that it consumes
one additional element from the longer iterator. This meant that we
failed to detect mismatched types on this extra consumed element,
because we never compared it to the variable type of the other tuple.

Use `zip_longest` from itertools as an alternative, which allows us to
combine all the handling into just two `zip_longest`, one for prefixes
and one for suffixes.

Marking this PR internal since it fixes a bug in a commit that wasn't
released yet.

## Test Plan

Added mdtests that failed before this fix and pass after it.
2025-06-21 13:09:23 -07:00
..
annotations [ty] Fix panics when pulling types for various special forms that have the wrong number of parameters (#18642) 2025-06-17 10:40:50 +01:00
assignment [ty] Homogeneous and mixed tuples (#18600) 2025-06-20 18:23:54 -04:00
binary [ty] Homogeneous and mixed tuples (#18600) 2025-06-20 18:23:54 -04:00
boolean Revert "[ty] Better control flow for boolean expressions that are inside if (#18010)" (#18150) 2025-05-17 08:27:32 -04:00
boundness_declaredness Update class literal display to use <class 'Foo'> style (#17889) 2025-05-06 20:11:25 -04:00
call [ty] Add support for @staticmethods (#18809) 2025-06-20 10:38:17 +02:00
class Update class literal display to use <class 'Foo'> style (#17889) 2025-05-06 20:11:25 -04:00
comparison [ty] Fix binary intersection comparison inference logic (#18266) 2025-05-23 12:55:17 +02:00
comprehensions Rename Red Knot (#17820) 2025-05-03 19:49:15 +02:00
conditional Rename Red Knot (#17820) 2025-05-03 19:49:15 +02:00
declaration Rename Red Knot (#17820) 2025-05-03 19:49:15 +02:00
diagnostics [ty] Surface matched overload diagnostic directly (#18452) 2025-06-20 08:36:49 +05:30
directives [ty] Fix normalization of unions containing instances parameterized with unions (#18112) 2025-05-14 22:48:33 -04:00
doc ty_python_semantic: add union type context to function call type errors 2025-05-09 13:40:51 -04:00
exception [ty] support del statement and deletion of except handler names (#18593) 2025-06-12 07:44:42 -07:00
expression [ty] Treat lambda functions as instances of types.FunctionType (#18431) 2025-06-02 16:46:26 +01:00
function [ty] Add diagnosis for function with no return statement but with return type annotation (#18359) 2025-05-29 23:17:18 +00:00
generics [ty] Homogeneous and mixed tuples (#18600) 2025-06-20 18:23:54 -04:00
ide_support [ty] Minor tweaks to "list all members" docs and tests (#18388) 2025-05-30 13:36:57 -04:00
import Revert "[ty] Offer "Did you mean...?" suggestions for unresolved from imports and unresolved attributes (#18705)" (#18721) 2025-06-17 15:48:09 +01:00
literal [ty] Understand classes that inherit from subscripted Protocol[] as generic (#17832) 2025-05-09 17:39:15 +01:00
loops Rename Red Knot (#17820) 2025-05-03 19:49:15 +02:00
narrow [ty] Homogeneous and mixed tuples (#18600) 2025-06-20 18:23:54 -04:00
regression Rename Red Knot (#17820) 2025-05-03 19:49:15 +02:00
scopes [ty] Add support for global __debug__ constant (#18540) 2025-06-10 06:48:59 +00:00
shadowing Rename Red Knot (#17820) 2025-05-03 19:49:15 +02:00
snapshots [ty] Surface matched overload diagnostic directly (#18452) 2025-06-20 08:36:49 +05:30
stubs [ty] Do not carry the generic context of Protocol or Generic in the ClassBase enum (#17989) 2025-05-22 21:37:03 -04:00
subscript [ty] Homogeneous and mixed tuples (#18600) 2025-06-20 18:23:54 -04:00
suppressions Rename Red Knot (#17820) 2025-05-03 19:49:15 +02:00
type_compendium [ty] Homogeneous and mixed tuples (#18600) 2025-06-20 18:23:54 -04:00
type_of Update class literal display to use <class 'Foo'> style (#17889) 2025-05-06 20:11:25 -04:00
type_properties [ty] Fix mixed tuple subtyping (#18852) 2025-06-21 13:09:23 -07:00
type_qualifiers [ty] Fix panics when pulling types for ClassVar or Final parameterized with >1 argument (#18824) 2025-06-20 18:06:40 +01:00
unary Update class literal display to use <class 'Foo'> style (#17889) 2025-05-06 20:11:25 -04:00
with [ty] Add hint if async context manager is used in non-async with statement (#18299) 2025-05-26 21:34:47 +02:00
.mdformat.toml Rename Red Knot (#17820) 2025-05-03 19:49:15 +02:00
attributes.md [ty] Homogeneous and mixed tuples (#18600) 2025-06-20 18:23:54 -04:00
cycle.md [ty] Add cycle handling for unpacking targets (#18078) 2025-05-13 21:27:48 +00:00
dataclass_transform.md [ty] Detect overloads decorated with @dataclass_transform (#17835) 2025-05-07 15:51:13 +02:00
dataclasses.md [ty] Report when a dataclass contains more than one KW_ONLY field (#18731) 2025-06-19 19:42:31 -07:00
decorators.md ty_python_semantic: add union type context to function call type errors 2025-05-09 13:40:51 -04:00
del.md [ty] support del statement and deletion of except handler names (#18593) 2025-06-12 07:44:42 -07:00
descriptor_protocol.md [ty] Add support for @staticmethods (#18809) 2025-06-20 10:38:17 +02:00
final.md Rename Red Knot (#17820) 2025-05-03 19:49:15 +02:00
intersection_types.md [ty] Unify Type::is_subtype_of() and Type::is_assignable_to() (#18430) 2025-06-06 17:28:55 +00:00
invalid_syntax.md Rename Red Knot (#17820) 2025-05-03 19:49:15 +02:00
known_constants.md Rename Red Knot (#17820) 2025-05-03 19:49:15 +02:00
mdtest_config.md Rename Red Knot (#17820) 2025-05-03 19:49:15 +02:00
mdtest_custom_typeshed.md [ty] Fix duplicate diagnostics for unresolved module when an import from statement imports multiple members (#17886) 2025-05-06 12:37:10 +01:00
metaclass.md Update class literal display to use <class 'Foo'> style (#17889) 2025-05-06 20:11:25 -04:00
mro.md [ty] Implement implicit inheritance from Generic[] for PEP-695 generic classes (#18283) 2025-05-26 20:40:16 +01:00
named_tuple.md [ty] Add generic inference for dataclasses (#18443) 2025-06-03 09:59:43 -07:00
overloads.md [ty] Add support for @staticmethods (#18809) 2025-06-20 10:38:17 +02:00
pep695_type_aliases.md [ty] Support typing.TypeAliasType (#18156) 2025-05-19 16:36:49 +02:00
properties.md ty_python_semantic: add union type context to function call type errors 2025-05-09 13:40:51 -04:00
protocols.md [ty] Unify Type::is_subtype_of() and Type::is_assignable_to() (#18430) 2025-06-06 17:28:55 +00:00
slots.md Rename Red Knot (#17820) 2025-05-03 19:49:15 +02:00
statically_known_branches.md [ty] Reachability constraints (#18621) 2025-06-17 09:24:28 +02:00
sys_platform.md Rename Red Knot (#17820) 2025-05-03 19:49:15 +02:00
sys_version_info.md Rename Red Knot (#17820) 2025-05-03 19:49:15 +02:00
terminal_statements.md Rename Red Knot (#17820) 2025-05-03 19:49:15 +02:00
type_api.md [ty] Fix panics when pulling types for various special forms that have the wrong number of parameters (#18642) 2025-06-17 10:40:50 +01:00
typed_dict.md Rename Red Knot (#17820) 2025-05-03 19:49:15 +02:00
union_types.md Rename Red Knot (#17820) 2025-05-03 19:49:15 +02:00
unpacking.md [ty] Add tests for empty list/tuple unpacking (#18451) 2025-06-04 02:40:26 +00:00
unreachable.md [ty] Reachability constraints (#18621) 2025-06-17 09:24:28 +02:00