Using In-Memory Filesystems for Faster File Management Testing in Rust
By
ingve
Toasted golden, schmeared with insight. Top of the rack.
Summary
The author discusses their experience with file management testing in Rust CLI tools, specifically addressing performance issues with file operations (exec and fstat) that slow down test suites. They explore using in-memory filesystems as a solution, inspired by the Go package Afero, and seek Rust equivalents to replace std::fs with a custom filesystem implementation for faster testing.
Key quotes
· 4 pulledI have written a lot of file management tests for Bundler, and the two biggest reasons that the Bundler test suite is slow are exec and fstat.
Knowing that, I thought I would try to get out ahead of the slow file stat problem by using an in-memory filesystem for testing.
A collaborator mentioned being happy with the Go package named Afero for this purpose, and so I set off to look for a Rust equivalent to Afero.
Conceptually, I was hoping to be able to replace std::fs:: with mycli::fs::
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