add classmethod IngestionCache.from_persist_dir and add/fix some test…

[jun76]

Description

I added the from_persist_dir interface to the IngestionCache class. This is intended for use when utilizing IngestionPipeline without using load, instead directly passing pre-generated instances of docstore and cache. It was implemented to resolve the imbalance where from_persist_dir exists on the docstore side but not on the cache side.

Additionally, while creating the test case for the newly added from_persist_dir (test_pipeline_with_preload_from_persist_dir @test_pipeline.py), I discovered that The existing test cases test_save_load_pipeline and test_save_load_pipeline_without_docstore were re-running the first pipeline after the second pipeline generation to verify dedup. This seemed inconsistent with the intended behavior, so I corrected it as well.

After adding from_persist_dir and fixing the test cases, I confirmed all tests pass.

New Package?

Did I fill in the tool.llamahub section in the pyproject.toml and provide a detailed README.md for my new integration or package?

• Yes
• No

Version Bump?

Did I bump the version in the pyproject.toml file of the package I am updating? (Except for the llama-index-core package)

• Yes
• No

Type of Change

Please delete options that are not relevant.

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to not work as expected)
• This change requires a documentation update

How Has This Been Tested?

Your pull-request will likely not be merged unless it is covered by some form of impactful unit testing.

• I added new unit tests to cover this change
• I believe this change is already covered by existing unit tests

Suggested Checklist:

• I have performed a self-review of my own code
• I have commented my code, particularly in hard-to-understand areas
• I have made corresponding changes to the documentation
• I have added Google Colab support for the newly added notebooks.
• My changes generate no new warnings
• I have added tests that prove my fix is effective or that my feature works
• New and existing unit tests pass locally with my changes
• I ran uv run make format; uv run make lint to appease the lint gods