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21bcc8848d
lighthouse/testing/ef_tests
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Paul Hauner 21bcc8848d Add caching for state.eth1_data_votes (#919) 
## Issue Addressed

NA

## Proposed Changes

Adds additional tree hash caching for `state.eth1_data_votes`.

Presently, each time we tree hash the `BeaconState`, we recompute the `state.eth1_data_votes` tree in it's entirety. This is because we only previous had support for caching fixed-length lists.

This PR adds the `Eth1DataVotesTreeHashCache` which provides caching for the `state.eth1_data_votes` list. The cache is aware of `SLOTS_PER_ETH1_VOTING_PERIOD` and will reset itself whenever that boundary is crossed.

This cache adds a new (but somewhat fundamental) restriction to tree hash caching:

*For some state `s`, `s.tree_hash_cache` is only valid for `s` or descendants of `s` that have been reached via state transitions that are faithful to the specification (invalid blocks are permitted, as long as they are faithfully processed).*
2020-07-24 02:19:47 +00:00
..
src Consensus updates for v0.12 (#1228) 2020-06-03 14:56:54 +10:00
tests Add caching for state.eth1_data_votes (#919) 2020-07-24 02:19:47 +00:00
.gitignore Directory Restructure (#1163) 2020-05-18 21:24:23 +10:00
Cargo.toml Check for unused deps in CI (#1262) 2020-06-14 10:59:50 +10:00
Makefile Update v0.12.0 to v0.12.1 (#1259) 2020-06-11 10:07:10 +10:00
README.md Directory Restructure (#1163) 2020-05-18 21:24:23 +10:00

README.md

Ethereum 2.0 Specification Tests

This crate parses and executes the test vectors at ethereum/eth2.0-spec-tests.

Functionality is achieved only via the $ cargo test --features ef_tests command.

Running the Tests

Because the test vectors are very large, we do not download or run them by default. To download them, run (in this directory):

$ make

Note: this may download hundreds of MB of compressed archives from the ethereum/eth2.0-spec-tests, which may expand into several GB of files.

If successful, you should now have the extracted tests in ./eth2.0-spec-tests.

Run them with:

$ cargo test --features ef_tests

The tests won't run without the ef_tests feature enabled (this is to ensure that a top-level cargo test --all won't fail on missing files).

Saving Space

When you download the tests, the downloaded archives will be kept in addition to the extracted files. You have several options for saving space:

  1. Delete the archives (make clean-archives), and keep the extracted files. Suitable for everyday use, just don't re-run make or it will redownload the archives.
  2. Delete the extracted files (make clean-test-files), and keep the archives. Suitable for CI, or temporarily saving space. If you re-run make it will extract the archives rather than redownloading them.
  3. Delete everything (make clean). Good for updating to a new version, or if you no longer wish to run the EF tests.