57 lines
2.0 KiB
Rust
57 lines
2.0 KiB
Rust
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extern crate autocfg;
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use std::env;
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mod support;
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/// Tests that autocfg uses the RUSTC_WRAPPER and/or RUSTC_WORKSPACE_WRAPPER
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/// environment variables when running rustc.
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#[test]
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#[cfg(unix)] // we're using system binaries as wrappers
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fn test_wrappers() {
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fn set(name: &str, value: Option<bool>) {
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match value {
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Some(true) => env::set_var(name, "/usr/bin/env"),
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Some(false) => env::set_var(name, "/bin/false"),
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None => env::remove_var(name),
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}
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}
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let out = support::out_dir();
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// This is used as a heuristic to detect rust-lang/cargo#9601.
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env::set_var("CARGO_ENCODED_RUSTFLAGS", "");
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// No wrapper, a good pass-through wrapper, and a bad wrapper.
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let variants = [None, Some(true), Some(false)];
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for &workspace in &variants {
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for &rustc in &variants {
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set("RUSTC_WRAPPER", rustc);
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set("RUSTC_WORKSPACE_WRAPPER", workspace);
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let ac = autocfg::AutoCfg::with_dir(out.as_ref()).unwrap();
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if rustc == Some(false) || workspace == Some(false) {
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// Everything should fail with bad wrappers.
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assert!(!ac.probe_type("usize"));
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} else {
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// Try known good and bad types for the wrapped rustc.
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assert!(ac.probe_type("usize"));
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assert!(!ac.probe_type("mesize"));
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}
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// Either way, we should have found the inner rustc version.
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assert!(ac.probe_rustc_version(1, 0));
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}
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}
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// Finally, make sure that `RUSTC_WRAPPER` is applied outermost
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// by using something that doesn't pass through at all.
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env::set_var("RUSTC_WRAPPER", "./tests/wrap_ignored");
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env::set_var("RUSTC_WORKSPACE_WRAPPER", "/bin/false");
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let ac = autocfg::AutoCfg::with_dir(out.as_ref()).unwrap();
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assert!(ac.probe_type("mesize")); // anything goes!
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// Make sure we also got the version from that wrapper.
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assert!(ac.probe_rustc_version(12345, 6789));
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}
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