tempfile
entrait
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tempfile
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Hey Rustaceans! Got a question? Ask here (27/2023)!
I need to do some tests with files operations, what's the best practice in regards to creating temporary files in tests ? I heard about tempfile but is there a more idiomatic way to do that ?
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Testing the memory safe Rust implementation of Sudo/Su
The sudo-rs Cargo.toml [1] file seems very reasonable. This is the curse of being cross platform. The inclusion of https://github.com/Stebalien/tempfile as a dependency is responsible for the overwhelming majority of lines due to including *-sys crates for multiple OSs.
~/Code/tempfile !! tokei vendor
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Adding automated tests to rost_gen
Eventually, I had to test reading of input file and generation of the html file. To do this, I would need to create test files for input and output for this scenario. However, this could cause problems unless I named all the test files differently as tests usually run in parallel. So, I decided to use the tempfile crate to create a temporary test directory for each test (where needed):
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Is this safe? Keeping and opening temporary file.
Create a NamedTempFile with the tempfile crate.
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How can I test this get_type_filepaths function?
Even better would be to create a tempdir and populate it during the test run. Try the tempfile crate.
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How to open a PDF with default PDF viewer?
Not the same commenter but you could use a tempfile
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Blog post: Async Cancellation
That said though; there are a few solutions for the problem you're describing. One would be to have a "temp file" type which knows how to delete itself when dropped, but can manually be converted into a permanent file in the case of success. Crates like tempfile provide abstractions for this.
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temp-dir: Simple temporary directory with cleanup
tempdir was merged into tempfile.
entrait
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Entrait 0.4 — loosely coupled application design made easy
Entrait (docs) is a proc-macro for designing loosely coupled applications, enabling the same testing flexibility that users of more orthodox object-oriented languages are used to.
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Fighting 'static bounds
You might want to look at https://docs.rs/entrait/latest/entrait/, a pattern created specifically for frameworks (like async-graphql) to be loosely linked with your business logic and global application state. There is already a small example for async-graphql. (I am the author of entrait)
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Entrait v0.3.2
A new version of entrait has been released, this time with experimental support for zero-cost async Inversion of Control.
What are some alternatives?
tempdir - Temporary directory management for Rust
realworld-axum-sqlx - A Rust implementation of the Realworld demo app spec using Axum and SQLx.
zbox - Zero-details, privacy-focused in-app file system.
xattr - Extended attribute library for rust.
rust-9p - Tokio-based asynchronous filesystems library using 9P2000.L protocol, an extended variant of 9P from Plan 9.
rust - Empowering everyone to build reliable and efficient software.
fs_extra - Expanding opportunities standard library std::fs and std::io
sudo-rs - A memory safe implementation of sudo and su.
sudo - Utility to execute a command as another user
pgfplots - PGFPlots code generator
test-with - A lib help you run test with condition
regex - An implementation of regular expressions for Rust. This implementation uses finite automata and guarantees linear time matching on all inputs.