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::common::ConfigWithTemp {
33 let mut config = compiletest::Config::default().tempdir();
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
65 flags.push("--edition 2018".to_owned());
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);
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
102 flags.push("--edition 2018".to_owned());
104 // FIXME: We use opt level 1 because MIR inlining defeats the validation
106 flags.push("-Zmir-opt-level=1".to_owned());
109 // Validation relies on the EscapeToRaw statements being emitted
110 flags.push("-Zmiri-disable-validation".to_owned());
113 let mut config = mk_config("ui");
114 config.src_base = PathBuf::from(path);
115 config.target = target.to_owned();
116 config.host = host.to_owned();
117 config.target_rustcflags = Some(flags.join(" "));
118 compiletest::run_tests(&config);
121 fn is_target_dir<P: Into<PathBuf>>(path: P) -> bool {
122 let mut path = path.into();
124 path.metadata().map(|m| m.is_dir()).unwrap_or(false)
127 fn target_has_std<P: Into<PathBuf>>(path: P) -> bool {
128 let mut path = path.into();
130 std::fs::read_dir(path)
131 .expect("invalid target")
132 .map(|entry| entry.unwrap())
133 .filter(|entry| entry.file_type().unwrap().is_file())
134 .filter_map(|entry| entry.file_name().into_string().ok())
135 .any(|file_name| file_name.starts_with("libstd") && file_name.ends_with(".rlib"))
139 fn for_all_targets<F: FnMut(String)>(sysroot: &Path, f: F) {
140 let target_dir = sysroot.join("lib").join("rustlib");
141 let mut targets = std::fs::read_dir(target_dir)
142 .expect("invalid sysroot")
143 .map(|entry| entry.unwrap())
144 .filter(|entry| is_target_dir(entry.path()))
145 .filter(|entry| target_has_std(entry.path()))
146 .map(|entry| entry.file_name().into_string().unwrap())
149 if targets.peek().is_none() {
150 panic!("No valid targets found");
156 fn get_sysroot() -> PathBuf {
157 let sysroot = std::env::var("MIRI_SYSROOT").unwrap_or_else(|_| {
158 let sysroot = std::process::Command::new("rustc")
162 .expect("rustc not found")
164 String::from_utf8(sysroot).expect("sysroot is not utf8")
166 PathBuf::from(sysroot.trim())
169 fn get_host() -> String {
170 let rustc = rustc_test_suite().unwrap_or(PathBuf::from("rustc"));
171 let host = std::process::Command::new(rustc)
174 .expect("rustc not found for -vV")
176 let host = std::str::from_utf8(&host).expect("sysroot is not utf8");
177 let host = host.split("\nhost: ").nth(1).expect(
178 "no host: part in rustc -vV",
180 let host = host.split('\n').next().expect("no \n after host");
184 fn run_pass_miri(opt: bool) {
185 let sysroot = get_sysroot();
186 let host = get_host();
188 for_all_targets(&sysroot, |target| {
189 miri_pass(&sysroot, "tests/run-pass", &target, &host, false, opt);
191 miri_pass(&sysroot, "tests/run-pass-fullmir", &host, &host, true, opt);
194 fn compile_fail_miri(opt: bool) {
195 let sysroot = get_sysroot();
196 let host = get_host();
198 // FIXME: run tests for other targets, too
199 compile_fail(&sysroot, "tests/compile-fail", &host, &host, false, opt);
200 compile_fail(&sysroot, "tests/compile-fail-fullmir", &host, &host, true, opt);
203 fn test_runner(_tests: &[&()]) {
204 // We put everything into a single test to avoid the parallelism `cargo test`
205 // introduces. We still get parallelism within our tests because `compiletest`
206 // uses `libtest` which runs jobs in parallel.
208 run_pass_miri(false);
211 compile_fail_miri(false);
212 compile_fail_miri(true);