rust/tests/compiletest.rs

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#![feature(slice_concat_ext)]
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extern crate compiletest_rs as compiletest;
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use std::slice::SliceConcatExt;
use std::path::{PathBuf, Path};
use std::io::Write;
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macro_rules! eprintln {
($($arg:tt)*) => {
let stderr = std::io::stderr();
writeln!(stderr.lock(), $($arg)*).unwrap();
}
}
fn compile_fail(sysroot: &Path, path: &str, target: &str, host: &str, fullmir: bool) {
eprintln!("## Running compile-fail tests in {} against miri for target {}", path, target);
let mut config = compiletest::default_config();
config.mode = "compile-fail".parse().expect("Invalid mode");
config.rustc_path = "target/debug/miri".into();
if fullmir {
if host != target {
// skip fullmir on nonhost
return;
}
let sysroot = Path::new(&std::env::var("HOME").unwrap()).join(".xargo").join("HOST");
config.target_rustcflags = Some(format!("--sysroot {}", sysroot.to_str().unwrap()));
config.src_base = PathBuf::from(path.to_string());
} else {
config.target_rustcflags = Some(format!("--sysroot {}", sysroot.to_str().unwrap()));
config.src_base = PathBuf::from(path.to_string());
}
config.target = target.to_owned();
compiletest::run_tests(&config);
}
fn run_pass(path: &str) {
eprintln!("## Running run-pass tests in {} against rustc", path);
let mut config = compiletest::default_config();
config.mode = "run-pass".parse().expect("Invalid mode");
config.src_base = PathBuf::from(path);
config.target_rustcflags = Some("-Dwarnings".to_string());
config.host_rustcflags = Some("-Dwarnings".to_string());
compiletest::run_tests(&config);
}
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fn miri_pass(path: &str, target: &str, host: &str, fullmir: bool, opt: bool) {
let opt_str = if opt {
" with optimizations"
} else {
""
};
eprintln!("## Running run-pass tests in {} against miri for target {}{}", path, target, opt_str);
let mut config = compiletest::default_config();
config.mode = "mir-opt".parse().expect("Invalid mode");
config.src_base = PathBuf::from(path);
config.target = target.to_owned();
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config.host = host.to_owned();
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config.rustc_path = "target/debug/miri".into();
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let mut flags = Vec::new();
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if fullmir {
if host != target {
// skip fullmir on nonhost
return;
}
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let sysroot = Path::new(&std::env::var("HOME").unwrap()).join(".xargo").join("HOST");
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flags.push(format!("--sysroot {}", sysroot.to_str().unwrap()));
}
if opt {
flags.push("-Zmir-opt-level=3".to_owned());
} else {
flags.push("-Zmir-opt-level=0".to_owned());
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}
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config.target_rustcflags = Some(flags.join(" "));
// don't actually execute the final binary, it might be for other targets and we only care
// about running miri, not the binary.
config.runtool = Some("echo \"\" || ".to_owned());
if target == host {
std::env::set_var("MIRI_HOST_TARGET", "yes");
}
compiletest::run_tests(&config);
std::env::set_var("MIRI_HOST_TARGET", "");
}
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fn is_target_dir<P: Into<PathBuf>>(path: P) -> bool {
let mut path = path.into();
path.push("lib");
path.metadata().map(|m| m.is_dir()).unwrap_or(false)
}
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fn for_all_targets<F: FnMut(String)>(sysroot: &Path, mut f: F) {
let target_dir = sysroot.join("lib").join("rustlib");
for entry in std::fs::read_dir(target_dir).expect("invalid sysroot") {
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let entry = entry.unwrap();
if !is_target_dir(entry.path()) { continue; }
let target = entry.file_name().into_string().unwrap();
f(target);
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}
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}
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fn get_sysroot() -> PathBuf {
let sysroot = std::env::var("MIRI_SYSROOT").unwrap_or_else(|_| {
let sysroot = std::process::Command::new("rustc")
.arg("--print")
.arg("sysroot")
.output()
.expect("rustc not found")
.stdout;
String::from_utf8(sysroot).expect("sysroot is not utf8")
});
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PathBuf::from(sysroot.trim())
}
fn get_host() -> String {
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let host = std::process::Command::new("rustc")
.arg("-vV")
.output()
.expect("rustc not found for -vV")
.stdout;
let host = std::str::from_utf8(&host).expect("sysroot is not utf8");
let host = host.split("\nhost: ").nth(1).expect("no host: part in rustc -vV");
let host = host.split('\n').next().expect("no \n after host");
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String::from(host)
}
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#[test]
fn run_pass_miri() {
let sysroot = get_sysroot();
let host = get_host();
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for &opt in [false, true].iter() {
for_all_targets(&sysroot, |target| {
miri_pass("tests/run-pass", &target, &host, false, opt);
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});
miri_pass("tests/run-pass-fullmir", &host, &host, true, opt);
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}
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}
#[test]
fn run_pass_rustc() {
run_pass("tests/run-pass");
run_pass("tests/run-pass-fullmir");
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}
#[test]
fn compile_fail_miri() {
let sysroot = get_sysroot();
let host = get_host();
for_all_targets(&sysroot, |target| {
compile_fail(&sysroot, "tests/compile-fail", &target, &host, false);
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});
compile_fail(&sysroot, "tests/compile-fail-fullmir", &host, &host, true);
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}