zero dim vector save/load

[swilly22]

fix #655

Summary by CodeRabbit

• Bug Fixes
  • Improved vector handling to prevent errors when working with empty vectors.
• Tests
  • Added tests for empty vector scenarios and updated test sequence for better reliability.

[coderabbitai]

Walkthrough

The recent updates focus on enhancing robustness in vector handling and effects processing within a software project. Changes include adding safety checks to prevent operations on empty vectors, and the test suite has been expanded and reorganized to ensure these new conditions are properly validated.

Changes

File Path	Change Summary
src/.../vector.c	Added check to prevent reading elements from zero-dimension vectors.
src/.../effects.c	Ensured no bytes are written when vector size is zero.
tests/.../test_effects.py	Added tests for empty vectors and reorganized existing tests.

🐰✨
Oh hark! A change, a fix, a tweak,
In code where vectors speak.
No more shall zeros lead astray,
Safety checks now lead the way.
Hop, skip, a test, a pass, all's well,
In code rabbit burrows, tales to tell. 🌟
🐰

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Recent Review Details

Configuration used: CodeRabbit UI

Commits

Files that changed from the base of the PR and between bb04c83 and 2342f54.

Files selected for processing (3)

• src/datatypes/vector.c (1 hunks)
• src/effects/effects.c (1 hunks)
• tests/flow/test_effects.py (2 hunks)

Additional Context Used

Ruff (12)

tests/flow/test_effects.py (12)

3-3: from common import * used; unable to detect undefined names

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4-4: from index_utils import * used; unable to detect undefined names

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36-36: Do not use bare except

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84-84: Env may be undefined, or defined from star imports

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88-88: Graph may be undefined, or defined from star imports

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89-89: Graph may be undefined, or defined from star imports

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92-92: create_node_range_index may be undefined, or defined from star imports

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93-93: create_edge_range_index may be undefined, or defined from star imports

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791-791: Graph may be undefined, or defined from star imports

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792-792: Graph may be undefined, or defined from star imports

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822-822: Graph may be undefined, or defined from star imports

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823-823: Graph may be undefined, or defined from star imports

Additional comments not posted (3)

src/datatypes/vector.c (1)

85-87: The conditional check to ensure dim > 0 before reading vector elements is a crucial fix for handling zero-dimensional vectors. Good job on this preventive measure.

src/effects/effects.c (1)

241-243: The conditional check to ensure n > 0 before writing bytes is a crucial fix for handling zero-dimensional vectors. Good job on this preventive measure.

tests/flow/test_effects.py (1)

762-778: The new test test14_empty_vector effectively checks the creation and handling of an empty vector, directly addressing the issue highlighted by the PR. Well done on this addition.

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