rust/tests/compile-test.rs

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#![feature(test)] // compiletest_rs requires this attribute
#![feature(once_cell)]
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use compiletest_rs as compiletest;
use compiletest_rs::common::Mode as TestMode;
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use std::env::{self, set_var, var};
use std::ffi::OsStr;
use std::fs;
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use std::io;
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use std::path::{Path, PathBuf};
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mod cargo;
fn host_lib() -> PathBuf {
option_env!("HOST_LIBS").map_or(cargo::CARGO_TARGET_DIR.join(env!("PROFILE")), PathBuf::from)
}
fn clippy_driver_path() -> PathBuf {
option_env!("CLIPPY_DRIVER_PATH").map_or(cargo::TARGET_LIB.join("clippy-driver"), PathBuf::from)
}
// When we'll want to use `extern crate ..` for a dependency that is used
// both by the crate and the compiler itself, we can't simply pass -L flags
// as we'll get a duplicate matching versions. Instead, disambiguate with
// `--extern dep=path`.
// See https://github.com/rust-lang/rust-clippy/issues/4015.
//
// FIXME: We cannot use `cargo build --message-format=json` to resolve to dependency files.
// Because it would force-rebuild if the options passed to `build` command is not the same
// as what we manually pass to `cargo` invocation
fn third_party_crates() -> String {
use std::collections::HashMap;
static CRATES: &[&str] = &["serde", "serde_derive", "regex", "clippy_lints", "syn", "quote"];
let dep_dir = cargo::TARGET_LIB.join("deps");
let mut crates: HashMap<&str, PathBuf> = HashMap::with_capacity(CRATES.len());
for entry in fs::read_dir(dep_dir).unwrap() {
let path = match entry {
Ok(entry) => entry.path(),
Err(_) => continue,
};
if let Some(name) = path.file_name().and_then(OsStr::to_str) {
for dep in CRATES {
if name.starts_with(&format!("lib{}-", dep)) && name.ends_with(".rlib") {
if let Some(old) = crates.insert(dep, path.clone()) {
panic!("Found multiple rlibs for crate `{}`: `{:?}` and `{:?}", dep, old, path);
}
break;
}
}
}
}
let v: Vec<_> = crates
.into_iter()
.map(|(dep, path)| format!("--extern {}={}", dep, path.display()))
.collect();
v.join(" ")
}
fn default_config() -> compiletest::Config {
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let mut config = compiletest::Config::default();
if let Ok(name) = env::var("TESTNAME") {
config.filter = Some(name);
}
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if let Some(path) = option_env!("RUSTC_LIB_PATH") {
let path = PathBuf::from(path);
config.run_lib_path = path.clone();
config.compile_lib_path = path;
}
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config.target_rustcflags = Some(format!(
"--emit=metadata -L {0} -L {1} -Dwarnings -Zui-testing {2}",
host_lib().join("deps").display(),
cargo::TARGET_LIB.join("deps").display(),
third_party_crates(),
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));
config.build_base = if cargo::is_rustc_test_suite() {
// This make the stderr files go to clippy OUT_DIR on rustc repo build dir
let mut path = PathBuf::from(env!("OUT_DIR"));
path.push("test_build_base");
path
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} else {
host_lib().join("test_build_base")
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};
config.rustc_path = clippy_driver_path();
config
}
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fn run_mode(cfg: &mut compiletest::Config) {
cfg.mode = TestMode::Ui;
cfg.src_base = Path::new("tests").join("ui");
compiletest::run_tests(&cfg);
}
fn run_ui_toml(config: &mut compiletest::Config) {
fn run_tests(config: &compiletest::Config, mut tests: Vec<tester::TestDescAndFn>) -> Result<bool, io::Error> {
let mut result = true;
let opts = compiletest::test_opts(config);
for dir in fs::read_dir(&config.src_base)? {
let dir = dir?;
if !dir.file_type()?.is_dir() {
continue;
}
let dir_path = dir.path();
set_var("CARGO_MANIFEST_DIR", &dir_path);
for file in fs::read_dir(&dir_path)? {
let file = file?;
let file_path = file.path();
if file.file_type()?.is_dir() {
continue;
}
if file_path.extension() != Some(OsStr::new("rs")) {
continue;
}
let paths = compiletest::common::TestPaths {
file: file_path,
base: config.src_base.clone(),
relative_dir: dir_path.file_name().unwrap().into(),
};
let test_name = compiletest::make_test_name(&config, &paths);
let index = tests
.iter()
.position(|test| test.desc.name == test_name)
.expect("The test should be in there");
result &= tester::run_tests_console(&opts, vec![tests.swap_remove(index)])?;
}
}
Ok(result)
}
config.mode = TestMode::Ui;
config.src_base = Path::new("tests").join("ui-toml").canonicalize().unwrap();
let tests = compiletest::make_tests(&config);
let manifest_dir = var("CARGO_MANIFEST_DIR").unwrap_or_default();
let res = run_tests(&config, tests);
set_var("CARGO_MANIFEST_DIR", &manifest_dir);
match res {
Ok(true) => {},
Ok(false) => panic!("Some tests failed"),
Err(e) => {
panic!("I/O failure during tests: {:?}", e);
},
}
}
fn run_ui_cargo(config: &mut compiletest::Config) {
fn run_tests(
config: &compiletest::Config,
filter: &Option<String>,
mut tests: Vec<tester::TestDescAndFn>,
) -> Result<bool, io::Error> {
let mut result = true;
let opts = compiletest::test_opts(config);
for dir in fs::read_dir(&config.src_base)? {
let dir = dir?;
if !dir.file_type()?.is_dir() {
continue;
}
// Use the filter if provided
let dir_path = dir.path();
match &filter {
Some(name) if !dir_path.ends_with(name) => continue,
_ => {},
}
for case in fs::read_dir(&dir_path)? {
let case = case?;
if !case.file_type()?.is_dir() {
continue;
}
let src_path = case.path().join("src");
// When switching between branches, if the previous branch had a test
// that the current branch does not have, the directory is not removed
// because an ignored Cargo.lock file exists.
if !src_path.exists() {
continue;
}
env::set_current_dir(&src_path)?;
for file in fs::read_dir(&src_path)? {
let file = file?;
if file.file_type()?.is_dir() {
continue;
}
// Search for the main file to avoid running a test for each file in the project
let file_path = file.path();
match file_path.file_name().and_then(OsStr::to_str) {
Some("main.rs") => {},
_ => continue,
}
let paths = compiletest::common::TestPaths {
file: file_path,
base: config.src_base.clone(),
relative_dir: src_path.strip_prefix(&config.src_base).unwrap().into(),
};
let test_name = compiletest::make_test_name(&config, &paths);
let index = tests
.iter()
.position(|test| test.desc.name == test_name)
.expect("The test should be in there");
result &= tester::run_tests_console(&opts, vec![tests.swap_remove(index)])?;
}
}
}
Ok(result)
}
if cargo::is_rustc_test_suite() {
return;
}
config.mode = TestMode::Ui;
config.src_base = Path::new("tests").join("ui-cargo").canonicalize().unwrap();
let tests = compiletest::make_tests(&config);
let current_dir = env::current_dir().unwrap();
let filter = env::var("TESTNAME").ok();
let res = run_tests(&config, &filter, tests);
env::set_current_dir(current_dir).unwrap();
match res {
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Ok(true) => {},
Ok(false) => panic!("Some tests failed"),
Err(e) => {
panic!("I/O failure during tests: {:?}", e);
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},
}
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}
fn prepare_env() {
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set_var("CLIPPY_DISABLE_DOCS_LINKS", "true");
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set_var("CLIPPY_TESTS", "true");
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//set_var("RUST_BACKTRACE", "0");
}
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#[test]
fn compile_test() {
prepare_env();
let mut config = default_config();
run_mode(&mut config);
run_ui_toml(&mut config);
run_ui_cargo(&mut config);
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}