capacity-optimizer

This tool searches for tests that use PushState::builder().<foo>().with_max_stack_size(<int_literal>) and reduces the max size to the minimum value

Caution

This tool is still very early in development and needs major refactors. The current script is a prototype, and the next task is a rewrite making readable - it currently is not at all.

Warning

Although I am fairly confident that this script won't break any code, it does modify code in your project. It is highly recommended to only run it after a commit has been done and the current git state is clean.

Note

This is currently way slower than it could be, as it recompiles all the tests for every single step. Changing all the tests in one target and testing them should be way faster, once that is implemented. Another optimization would be to test the current max_size -1 first to check if the current value is still optimal, that should speed up things a lot on consecutive runs.

Installation

For now only via

cargo install --git https://github.com/unhindered-ec/capacity_optimizer.git

or by cloning and building manually.

Usage

capacity-optimizer [Arguments] [Tests]

Arguments

• --allow-proc-macro-crates Also search in crates that are of type proc_macro for tests
• --allow-outside-test-mod By default all tests that are searched for must be either in a target of type test (meaning: integration test, in the tests/ folder) or behind a module with the #[cfg(test)] attribute. This allows tests in modules that don't have that attribute as well
• --allow-failing Try to make failing tests compile by raising the limit, up to u64::MAX.

Tests

Optionally provide a list of rust paths to tests you wish to optimize.