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54ce831db0
Avoid unsafe `std::env::set_var()` by allowing tests to inject
`std::env::var("RUSTC_BOOTSTRAP")` with a `env_var_rustc_bootstrap`
parameter.
38 lines
1.3 KiB
Rust
38 lines
1.3 KiB
Rust
use super::UnstableFeatures;
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#[test]
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fn rustc_bootstrap_parsing() {
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let is_bootstrap = |env: &str, krate: Option<&str>| {
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matches!(
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UnstableFeatures::from_environment_value(krate, Ok(env.to_string())),
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UnstableFeatures::Cheat
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)
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};
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assert!(is_bootstrap("1", None));
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assert!(is_bootstrap("1", Some("x")));
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// RUSTC_BOOTSTRAP allows specifying a specific crate
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assert!(is_bootstrap("x", Some("x")));
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// RUSTC_BOOTSTRAP allows multiple comma-delimited crates
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assert!(is_bootstrap("x,y,z", Some("x")));
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assert!(is_bootstrap("x,y,z", Some("y")));
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// Crate that aren't specified do not get unstable features
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assert!(!is_bootstrap("x", Some("a")));
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assert!(!is_bootstrap("x,y,z", Some("a")));
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assert!(!is_bootstrap("x,y,z", None));
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// `RUSTC_BOOTSTRAP=0` is not recognized.
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assert!(!is_bootstrap("0", None));
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// `RUSTC_BOOTSTRAP=-1` is force-stable, no unstable features allowed.
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let is_force_stable = |krate: Option<&str>| {
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matches!(
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UnstableFeatures::from_environment_value(krate, Ok("-1".to_string())),
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UnstableFeatures::Disallow
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)
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};
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assert!(is_force_stable(None));
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// Does not support specifying any crate.
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assert!(is_force_stable(Some("x")));
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assert!(is_force_stable(Some("x,y,z")));
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}
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