gleam-lang/gleam

Move shell-script tests that run on CI into Rust

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#5,726 opened on May 18, 2026

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help wanted

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Description

We have some tests defined using shell scripts, and most of these only run on CI. Change them to be run as part of cargo test.

To aid with this we could rejig the entrypoint code so we could run CLI commands from within the Rust code, passing the working directory as an argument.

let cd = Utf8PathBuf::from("tests/some_project")
let result = cli::main(cd, ["export", "escript"]);
snapshot!(result);

Contributor guide

Research direction
Examine existing shell test scripts, identify the commands and assertions they perform. Then rewrite those tests as Rust integration tests using the CLI entrypoint. Use the suggested pattern of calling `cli::main` with a working directory and arguments, and compare output with snapshots.
Tech stack
rustshell
Domain
backendtooling
Issue type
Refactor
DifficultyEstimated implementation difficulty for a new contributor, from 1 for very small changes to 5 for expert-level work.
3
Estimated timeA rough time range for an experienced contributor to investigate, implement, test, and prepare a pull request.
Half day
Activity statusHow available the issue appears right now: fresh, active, stale, blocked, or waiting on maintainer input.
Active
ClarityHow clearly the issue explains the expected change, acceptance criteria, and next step.
Clear
Prerequisites
Rustshell scriptingcargo test
Newbie friendlinessA 1-100 score estimating how approachable this issue is for first-time contributors.
65