#![feature(slice_concat_ext, custom_test_frameworks)] #![test_runner(test_runner)] use std::slice::SliceConcatExt; use std::path::{PathBuf, Path}; use std::env; use compiletest_rs as compiletest; use colored::*; fn miri_path() -> PathBuf { if rustc_test_suite().is_some() { PathBuf::from(option_env!("MIRI_PATH").unwrap()) } else { PathBuf::from(concat!("target/", env!("PROFILE"), "/miri")) } } fn rustc_test_suite() -> Option { option_env!("RUSTC_TEST_SUITE").map(PathBuf::from) } fn rustc_lib_path() -> PathBuf { option_env!("RUSTC_LIB_PATH").unwrap().into() } fn have_fullmir() -> bool { // We assume we have full MIR when MIRI_SYSROOT is set or when we are in rustc std::env::var("MIRI_SYSROOT").is_ok() || rustc_test_suite().is_some() } fn mk_config(mode: &str) -> compiletest::common::ConfigWithTemp { let mut config = compiletest::Config::default().tempdir(); config.mode = mode.parse().expect("Invalid mode"); config.rustc_path = miri_path(); if rustc_test_suite().is_some() { config.run_lib_path = rustc_lib_path(); config.compile_lib_path = rustc_lib_path(); } config.filter = env::args().nth(1); config } fn compile_fail(sysroot: &Path, path: &str, target: &str, host: &str, need_fullmir: bool, opt: bool) { if need_fullmir && !have_fullmir() { eprintln!("{}\n", format!( "## Skipping compile-fail tests in {} against miri for target {} due to missing mir", path, target ).yellow().bold()); return; } let opt_str = if opt { " with optimizations" } else { "" }; eprintln!("{}", format!( "## Running compile-fail tests in {} against miri for target {}{}", path, target, opt_str ).green().bold()); let mut flags = Vec::new(); flags.push(format!("--sysroot {}", sysroot.display())); flags.push("-Dwarnings -Dunused".to_owned()); // overwrite the -Aunused in compiletest-rs if opt { // Optimizing too aggressivley makes UB detection harder, but test at least // the default value. // FIXME: Opt level 3 ICEs during stack trace generation. flags.push("-Zmir-opt-level=1".to_owned()); } let mut config = mk_config("compile-fail"); config.src_base = PathBuf::from(path); config.target = target.to_owned(); config.host = host.to_owned(); config.target_rustcflags = Some(flags.join(" ")); compiletest::run_tests(&config); } fn miri_pass(sysroot: &Path, path: &str, target: &str, host: &str, need_fullmir: bool, opt: bool) { if need_fullmir && !have_fullmir() { eprintln!("{}\n", format!( "## Skipping run-pass tests in {} against miri for target {} due to missing mir", path, target ).yellow().bold()); return; } let opt_str = if opt { " with optimizations" } else { "" }; eprintln!("{}", format!( "## Running run-pass tests in {} against miri for target {}{}", path, target, opt_str ).green().bold()); let mut flags = Vec::new(); flags.push(format!("--sysroot {}", sysroot.display())); flags.push("-Dwarnings -Dunused".to_owned()); // overwrite the -Aunused in compiletest-rs if opt { // FIXME: We use opt level 1 because MIR inlining defeats the validation // whitelist. flags.push("-Zmir-opt-level=1".to_owned()); } if !have_fullmir() { // Validation relies on the EscapeToRaw statements being emitted flags.push("-Zmiri-disable-validation".to_owned()); } let mut config = mk_config("ui"); config.src_base = PathBuf::from(path); config.target = target.to_owned(); config.host = host.to_owned(); config.target_rustcflags = Some(flags.join(" ")); compiletest::run_tests(&config); } fn is_target_dir>(path: P) -> bool { let mut path = path.into(); path.push("lib"); path.metadata().map(|m| m.is_dir()).unwrap_or(false) } fn for_all_targets(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") { let entry = entry.unwrap(); if !is_target_dir(entry.path()) { continue; } let target = entry.file_name().into_string().unwrap(); f(target); } } 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") }); PathBuf::from(sysroot.trim()) } fn get_host() -> String { let rustc = rustc_test_suite().unwrap_or(PathBuf::from("rustc")); 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"); String::from(host) } fn run_pass_miri(opt: bool) { let sysroot = get_sysroot(); let host = get_host(); for_all_targets(&sysroot, |target| { miri_pass(&sysroot, "tests/run-pass", &target, &host, false, opt); }); miri_pass(&sysroot, "tests/run-pass-fullmir", &host, &host, true, opt); } fn compile_fail_miri(opt: bool) { let sysroot = get_sysroot(); let host = get_host(); // FIXME: run tests for other targets, too compile_fail(&sysroot, "tests/compile-fail", &host, &host, false, opt); compile_fail(&sysroot, "tests/compile-fail-fullmir", &host, &host, true, opt); } fn test_runner(_tests: &[&()]) { // We put everything into a single test to avoid the parallelism `cargo test` // introduces. We still get parallelism within our tests because `compiletest` // uses `libtest` which runs jobs in parallel. run_pass_miri(false); run_pass_miri(true); compile_fail_miri(false); compile_fail_miri(true); }