rustflags.rs - Codebrowser

1	extern crate autocfg;
2
3	use std::env;
4
5	/// Tests that autocfg uses the RUSTFLAGS or CARGO_ENCODED_RUSTFLAGS
6	/// environment variables when running rustc.
7	#[test]
8	fn test_with_sysroot() {
9	// Use the same path as this test binary.
10	let dir = env::current_exe().unwrap().parent().unwrap().to_path_buf();
11	env::set_var("OUT_DIR", &format!("{}", dir.display()));
12
13	// If we have encoded rustflags, they take precedence, even if empty.
14	env::set_var("CARGO_ENCODED_RUSTFLAGS", "");
15	env::set_var("RUSTFLAGS", &format!("-L {}", dir.display()));
16	let ac = autocfg::AutoCfg::new().unwrap();
17	assert!(ac.probe_sysroot_crate("std"));
18	assert!(!ac.probe_sysroot_crate("autocfg"));
19
20	// Now try again with useful encoded args.
21	env::set_var(
22	"CARGO_ENCODED_RUSTFLAGS",
23	&format!("-L`\x1f`{}", dir.display()),
24	);
25	let ac = autocfg::AutoCfg::new().unwrap();
26	assert!(ac.probe_sysroot_crate("autocfg"));
27
28	// Try the old-style RUSTFLAGS, ensuring HOST != TARGET.
29	env::remove_var("CARGO_ENCODED_RUSTFLAGS");
30	env::set_var("HOST", "lol");
31	let ac = autocfg::AutoCfg::new().unwrap();
32	assert!(ac.probe_sysroot_crate("autocfg"));
33	}
34

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