1 #![feature(slice_concat_ext, custom_test_frameworks)]
2 #![test_runner(test_runner)]
4 use std::slice::SliceConcatExt;
5 use std::path::{PathBuf, Path};
8 use compiletest_rs as compiletest;
11 fn miri_path() -> PathBuf {
12 if rustc_test_suite().is_some() {
13 PathBuf::from(option_env!("MIRI_PATH").unwrap())
15 PathBuf::from(concat!("target/", env!("PROFILE"), "/miri"))
19 fn rustc_test_suite() -> Option<PathBuf> {
20 option_env!("RUSTC_TEST_SUITE").map(PathBuf::from)
23 fn rustc_lib_path() -> PathBuf {
24 option_env!("RUSTC_LIB_PATH").unwrap().into()
27 fn have_fullmir() -> bool {
28 // We assume we have full MIR when MIRI_SYSROOT is set or when we are in rustc
29 std::env::var("MIRI_SYSROOT").is_ok() || rustc_test_suite().is_some()
32 fn mk_config(mode: &str) -> compiletest::Config {
33 let mut config = compiletest::Config::default();
34 config.mode = mode.parse().expect("Invalid mode");
35 config.rustc_path = miri_path();
36 if rustc_test_suite().is_some() {
37 config.run_lib_path = rustc_lib_path();
38 config.compile_lib_path = rustc_lib_path();
40 config.filter = env::args().nth(1);
44 fn compile_fail(sysroot: &Path, path: &str, target: &str, host: &str, need_fullmir: bool, opt: bool) {
45 if need_fullmir && !have_fullmir() {
46 eprintln!("{}\n", format!(
47 "## Skipping compile-fail tests in {} against miri for target {} due to missing mir",
54 let opt_str = if opt { " with optimizations" } else { "" };
55 eprintln!("{}", format!(
56 "## Running compile-fail tests in {} against miri for target {}{}",
62 let mut flags = Vec::new();
63 flags.push(format!("--sysroot {}", sysroot.display()));
64 flags.push("-Dwarnings -Dunused".to_owned()); // overwrite the -Aunused in compiletest-rs
66 // Optimizing too aggressivley makes UB detection harder, but test at least
68 // FIXME: Opt level 3 ICEs during stack trace generation.
69 flags.push("-Zmir-opt-level=1".to_owned());
72 let mut config = mk_config("compile-fail");
73 config.src_base = PathBuf::from(path);
74 config.target = target.to_owned();
75 config.host = host.to_owned();
76 config.target_rustcflags = Some(flags.join(" "));
77 compiletest::run_tests(&config.tempdir()); // FIXME: `tempdir` can be done by `mk_config` once `ConfigWithTemp` is exposed as type from compiletest
80 fn miri_pass(sysroot: &Path, path: &str, target: &str, host: &str, need_fullmir: bool, opt: bool) {
81 if need_fullmir && !have_fullmir() {
82 eprintln!("{}\n", format!(
83 "## Skipping run-pass tests in {} against miri for target {} due to missing mir",
90 let opt_str = if opt { " with optimizations" } else { "" };
91 eprintln!("{}", format!(
92 "## Running run-pass tests in {} against miri for target {}{}",
98 let mut flags = Vec::new();
99 flags.push(format!("--sysroot {}", sysroot.display()));
100 flags.push("-Dwarnings -Dunused".to_owned()); // overwrite the -Aunused in compiletest-rs
102 flags.push("-Zmir-opt-level=3".to_owned());
105 let mut config = mk_config("ui");
106 config.src_base = PathBuf::from(path);
107 config.target = target.to_owned();
108 config.host = host.to_owned();
109 config.target_rustcflags = Some(flags.join(" "));
110 compiletest::run_tests(&config.tempdir()); // FIXME: `tempdir` can be done by `mk_config` once `ConfigWithTemp` is exposed as type from compiletest
113 fn is_target_dir<P: Into<PathBuf>>(path: P) -> bool {
114 let mut path = path.into();
116 path.metadata().map(|m| m.is_dir()).unwrap_or(false)
119 fn for_all_targets<F: FnMut(String)>(sysroot: &Path, mut f: F) {
120 let target_dir = sysroot.join("lib").join("rustlib");
121 for entry in std::fs::read_dir(target_dir).expect("invalid sysroot") {
122 let entry = entry.unwrap();
123 if !is_target_dir(entry.path()) {
126 let target = entry.file_name().into_string().unwrap();
131 fn get_sysroot() -> PathBuf {
132 let sysroot = std::env::var("MIRI_SYSROOT").unwrap_or_else(|_| {
133 let sysroot = std::process::Command::new("rustc")
137 .expect("rustc not found")
139 String::from_utf8(sysroot).expect("sysroot is not utf8")
141 PathBuf::from(sysroot.trim())
144 fn get_host() -> String {
145 let rustc = rustc_test_suite().unwrap_or(PathBuf::from("rustc"));
146 let host = std::process::Command::new(rustc)
149 .expect("rustc not found for -vV")
151 let host = std::str::from_utf8(&host).expect("sysroot is not utf8");
152 let host = host.split("\nhost: ").nth(1).expect(
153 "no host: part in rustc -vV",
155 let host = host.split('\n').next().expect("no \n after host");
159 fn run_pass_miri(opt: bool) {
160 let sysroot = get_sysroot();
161 let host = get_host();
163 for_all_targets(&sysroot, |target| {
164 miri_pass(&sysroot, "tests/run-pass", &target, &host, false, opt);
166 miri_pass(&sysroot, "tests/run-pass-fullmir", &host, &host, true, opt);
169 fn compile_fail_miri(opt: bool) {
170 let sysroot = get_sysroot();
171 let host = get_host();
173 // FIXME: run tests for other targets, too
174 compile_fail(&sysroot, "tests/compile-fail", &host, &host, false, opt);
175 compile_fail(&sysroot, "tests/compile-fail-fullmir", &host, &host, true, opt);
178 fn test_runner(_tests: &[&()]) {
179 // We put everything into a single test to avoid the parallelism `cargo test`
180 // introduces. We still get parallelism within our tests because `compiletest`
181 // uses `libtest` which runs jobs in parallel.
183 run_pass_miri(false);
186 compile_fail_miri(false);
187 compile_fail_miri(true);