34 lines
1.2 KiB
Rust
34 lines
1.2 KiB
Rust
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extern crate autocfg;
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use std::env;
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/// Tests that autocfg uses the RUSTFLAGS or CARGO_ENCODED_RUSTFLAGS
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/// environment variables when running rustc.
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#[test]
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fn test_with_sysroot() {
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// Use the same path as this test binary.
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let dir = env::current_exe().unwrap().parent().unwrap().to_path_buf();
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env::set_var("OUT_DIR", &format!("{}", dir.display()));
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// If we have encoded rustflags, they take precedence, even if empty.
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env::set_var("CARGO_ENCODED_RUSTFLAGS", "");
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env::set_var("RUSTFLAGS", &format!("-L {}", dir.display()));
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let ac = autocfg::AutoCfg::new().unwrap();
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assert!(ac.probe_sysroot_crate("std"));
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assert!(!ac.probe_sysroot_crate("autocfg"));
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// Now try again with useful encoded args.
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env::set_var(
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"CARGO_ENCODED_RUSTFLAGS",
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&format!("-L\x1f{}", dir.display()),
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);
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let ac = autocfg::AutoCfg::new().unwrap();
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assert!(ac.probe_sysroot_crate("autocfg"));
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// Try the old-style RUSTFLAGS, ensuring HOST != TARGET.
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env::remove_var("CARGO_ENCODED_RUSTFLAGS");
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env::set_var("HOST", "lol");
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let ac = autocfg::AutoCfg::new().unwrap();
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assert!(ac.probe_sysroot_crate("autocfg"));
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}
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