1 #![feature(slice_concat_ext, custom_test_frameworks)]
2 #![test_runner(test_runner)]
4 use std::slice::SliceConcatExt;
5 use std::path::{PathBuf, Path};
9 use compiletest_rs as compiletest;
12 fn miri_path() -> PathBuf {
13 if rustc_test_suite().is_some() {
14 PathBuf::from(option_env!("MIRI_PATH").unwrap())
16 PathBuf::from(concat!("target/", env!("PROFILE"), "/miri"))
20 fn rustc_test_suite() -> Option<PathBuf> {
21 option_env!("RUSTC_TEST_SUITE").map(PathBuf::from)
24 fn rustc_lib_path() -> PathBuf {
25 option_env!("RUSTC_LIB_PATH").unwrap().into()
28 fn have_fullmir() -> bool {
29 // We assume we have full MIR when MIRI_SYSROOT is set or when we are in rustc
30 std::env::var("MIRI_SYSROOT").is_ok() || rustc_test_suite().is_some()
33 fn mk_config(mode: &str) -> compiletest::Config {
34 let mut config = compiletest::Config::default();
35 config.mode = mode.parse().expect("Invalid mode");
36 config.rustc_path = miri_path();
37 if rustc_test_suite().is_some() {
38 config.run_lib_path = rustc_lib_path();
39 config.compile_lib_path = rustc_lib_path();
41 config.filter = env::args().nth(1);
45 fn compile_fail(sysroot: &Path, path: &str, target: &str, host: &str, need_fullmir: bool, opt: bool) {
46 if need_fullmir && !have_fullmir() {
47 eprintln!("{}\n", format!(
48 "## Skipping compile-fail tests in {} against miri for target {} due to missing mir",
55 let opt_str = if opt { " with optimizations" } else { "" };
56 eprintln!("{}", format!(
57 "## Running compile-fail tests in {} against miri for target {}{}",
63 let mut flags = Vec::new();
64 flags.push(format!("--sysroot {}", sysroot.display()));
65 flags.push("-Dwarnings -Dunused".to_owned()); // overwrite the -Aunused in compiletest-rs
67 // Optimizing too aggressivley makes UB detection harder, but test at least
69 // FIXME: Opt level 3 ICEs during stack trace generation.
70 flags.push("-Zmir-opt-level=1".to_owned());
73 let mut config = mk_config("compile-fail");
74 config.src_base = PathBuf::from(path);
75 config.target = target.to_owned();
76 config.host = host.to_owned();
77 config.target_rustcflags = Some(flags.join(" "));
78 compiletest::run_tests(&config.tempdir()); // FIXME: `tempdir` can be done by `mk_config` once `ConfigWithTemp` is exposed as type from compiletest
81 fn miri_pass(sysroot: &Path, path: &str, target: &str, host: &str, need_fullmir: bool, opt: bool) {
82 if need_fullmir && !have_fullmir() {
83 eprintln!("{}\n", format!(
84 "## Skipping run-pass tests in {} against miri for target {} due to missing mir",
91 let opt_str = if opt { " with optimizations" } else { "" };
92 eprintln!("{}", format!(
93 "## Running run-pass tests in {} against miri for target {}{}",
99 let mut flags = Vec::new();
100 flags.push(format!("--sysroot {}", sysroot.display()));
101 flags.push("-Dwarnings -Dunused".to_owned()); // overwrite the -Aunused in compiletest-rs
103 flags.push("-Zmir-opt-level=3".to_owned());
106 let mut config = mk_config("ui");
107 config.src_base = PathBuf::from(path);
108 config.target = target.to_owned();
109 config.host = host.to_owned();
110 config.target_rustcflags = Some(flags.join(" "));
111 compiletest::run_tests(&config.tempdir()); // FIXME: `tempdir` can be done by `mk_config` once `ConfigWithTemp` is exposed as type from compiletest
114 fn is_target_dir<P: Into<PathBuf>>(path: P) -> bool {
115 let mut path = path.into();
117 path.metadata().map(|m| m.is_dir()).unwrap_or(false)
120 fn for_all_targets<F: FnMut(String)>(sysroot: &Path, mut f: F) {
121 let target_dir = sysroot.join("lib").join("rustlib");
122 for entry in std::fs::read_dir(target_dir).expect("invalid sysroot") {
123 let entry = entry.unwrap();
124 if !is_target_dir(entry.path()) {
127 let target = entry.file_name().into_string().unwrap();
132 fn get_sysroot() -> PathBuf {
133 let sysroot = std::env::var("MIRI_SYSROOT").unwrap_or_else(|_| {
134 let sysroot = std::process::Command::new("rustc")
138 .expect("rustc not found")
140 String::from_utf8(sysroot).expect("sysroot is not utf8")
142 PathBuf::from(sysroot.trim())
145 fn get_host() -> String {
146 let rustc = rustc_test_suite().unwrap_or(PathBuf::from("rustc"));
147 let host = std::process::Command::new(rustc)
150 .expect("rustc not found for -vV")
152 let host = std::str::from_utf8(&host).expect("sysroot is not utf8");
153 let host = host.split("\nhost: ").nth(1).expect(
154 "no host: part in rustc -vV",
156 let host = host.split('\n').next().expect("no \n after host");
160 fn run_pass_miri(opt: bool) {
161 let sysroot = get_sysroot();
162 let host = get_host();
164 for_all_targets(&sysroot, |target| {
165 miri_pass(&sysroot, "tests/run-pass", &target, &host, false, opt);
167 miri_pass(&sysroot, "tests/run-pass-fullmir", &host, &host, true, opt);
170 fn compile_fail_miri(opt: bool) {
171 let sysroot = get_sysroot();
172 let host = get_host();
174 // FIXME: run tests for other targets, too
175 compile_fail(&sysroot, "tests/compile-fail", &host, &host, false, opt);
176 compile_fail(&sysroot, "tests/compile-fail-fullmir", &host, &host, true, opt);
179 fn test_runner(_tests: &[&()]) {
180 // We put everything into a single test to avoid the parallelism `cargo test`
181 // introduces. We still get parallelism within our tests because `compiletest`
182 // uses `libtest` which runs jobs in parallel.
184 run_pass_miri(false);
187 compile_fail_miri(false);
188 compile_fail_miri(true);