1 #![feature(test)] // compiletest_rs requires this attribute
3 #![cfg_attr(feature = "deny-warnings", deny(warnings))]
4 #![warn(rust_2018_idioms, unused_lifetimes)]
6 use compiletest_rs as compiletest;
7 use compiletest_rs::common::Mode as TestMode;
9 use std::collections::HashMap;
10 use std::env::{self, remove_var, set_var, var_os};
11 use std::ffi::{OsStr, OsString};
14 use std::path::{Path, PathBuf};
18 // whether to run internal tests or not
19 const RUN_INTERNAL_TESTS: bool = cfg!(feature = "internal-lints");
21 /// All crates used in UI tests are listed here
22 static TEST_DEPENDENCIES: &[&str] = &[
34 // Test dependencies may need an `extern crate` here to ensure that they show up
35 // in the depinfo file (otherwise cargo thinks they are unused)
36 #[allow(unused_extern_crates)]
37 extern crate clippy_utils;
38 #[allow(unused_extern_crates)]
39 extern crate derive_new;
40 #[allow(unused_extern_crates)]
41 extern crate if_chain;
42 #[allow(unused_extern_crates)]
43 extern crate itertools;
44 #[allow(unused_extern_crates)]
46 #[allow(unused_extern_crates)]
49 fn host_lib() -> PathBuf {
50 option_env!("HOST_LIBS").map_or(cargo::CARGO_TARGET_DIR.join(env!("PROFILE")), PathBuf::from)
53 fn clippy_driver_path() -> PathBuf {
54 option_env!("CLIPPY_DRIVER_PATH").map_or(cargo::TARGET_LIB.join("clippy-driver"), PathBuf::from)
57 /// Produces a string with an `--extern` flag for all UI test crate
60 /// The dependency files are located by parsing the depinfo file for this test
61 /// module. This assumes the `-Z binary-dep-depinfo` flag is enabled. All test
62 /// dependencies must be added to Cargo.toml at the project root. Test
63 /// dependencies that are not *directly* used by this test module require an
64 /// `extern crate` declaration.
65 fn extern_flags() -> String {
66 let current_exe_depinfo = {
67 let mut path = env::current_exe().unwrap();
68 path.set_extension("d");
69 std::fs::read_to_string(path).unwrap()
71 let mut crates: HashMap<&str, &str> = HashMap::with_capacity(TEST_DEPENDENCIES.len());
72 for line in current_exe_depinfo.lines() {
73 // each dependency is expected to have a Makefile rule like `/path/to/crate-hash.rlib:`
74 let parse_name_path = || {
75 if line.starts_with(char::is_whitespace) {
78 let path_str = line.strip_suffix(':')?;
79 let path = Path::new(path_str);
80 if !matches!(path.extension()?.to_str()?, "rlib" | "so" | "dylib" | "dll") {
83 let (name, _hash) = path.file_stem()?.to_str()?.rsplit_once('-')?;
84 // the "lib" prefix is not present for dll files
85 let name = name.strip_prefix("lib").unwrap_or(name);
86 Some((name, path_str))
88 if let Some((name, path)) = parse_name_path() {
89 if TEST_DEPENDENCIES.contains(&name) {
90 // A dependency may be listed twice if it is available in sysroot,
91 // and the sysroot dependencies are listed first. As of the writing,
92 // this only seems to apply to if_chain.
93 crates.insert(name, path);
97 let not_found: Vec<&str> = TEST_DEPENDENCIES
100 .filter(|n| !crates.contains_key(n))
102 if !not_found.is_empty() {
103 panic!("dependencies not found in depinfo: {:?}", not_found);
107 .map(|(name, path)| format!("--extern {}={} ", name, path))
111 fn default_config() -> compiletest::Config {
112 let mut config = compiletest::Config::default();
114 if let Ok(filters) = env::var("TESTNAME") {
115 config.filters = filters.split(',').map(std::string::ToString::to_string).collect();
118 if let Some(path) = option_env!("RUSTC_LIB_PATH") {
119 let path = PathBuf::from(path);
120 config.run_lib_path = path.clone();
121 config.compile_lib_path = path;
124 // Using `-L dependency={}` enforces that external dependencies are added with `--extern`.
125 // This is valuable because a) it allows us to monitor what external dependencies are used
126 // and b) it ensures that conflicting rlibs are resolved properly.
127 config.target_rustcflags = Some(format!(
128 "--emit=metadata -L dependency={} -L dependency={} -Dwarnings -Zui-testing {}",
129 host_lib().join("deps").display(),
130 cargo::TARGET_LIB.join("deps").display(),
134 config.build_base = host_lib().join("test_build_base");
135 config.rustc_path = clippy_driver_path();
139 fn run_ui(cfg: &mut compiletest::Config) {
140 cfg.mode = TestMode::Ui;
141 cfg.src_base = Path::new("tests").join("ui");
142 // use tests/clippy.toml
143 let _g = VarGuard::set("CARGO_MANIFEST_DIR", std::fs::canonicalize("tests").unwrap());
144 compiletest::run_tests(cfg);
147 fn run_internal_tests(cfg: &mut compiletest::Config) {
148 // only run internal tests with the internal-tests feature
149 if !RUN_INTERNAL_TESTS {
152 cfg.mode = TestMode::Ui;
153 cfg.src_base = Path::new("tests").join("ui-internal");
154 compiletest::run_tests(cfg);
157 fn run_ui_toml(config: &mut compiletest::Config) {
158 fn run_tests(config: &compiletest::Config, mut tests: Vec<tester::TestDescAndFn>) -> Result<bool, io::Error> {
159 let mut result = true;
160 let opts = compiletest::test_opts(config);
161 for dir in fs::read_dir(&config.src_base)? {
163 if !dir.file_type()?.is_dir() {
166 let dir_path = dir.path();
167 let _g = VarGuard::set("CARGO_MANIFEST_DIR", &dir_path);
168 for file in fs::read_dir(&dir_path)? {
170 let file_path = file.path();
171 if file.file_type()?.is_dir() {
174 if file_path.extension() != Some(OsStr::new("rs")) {
177 let paths = compiletest::common::TestPaths {
179 base: config.src_base.clone(),
180 relative_dir: dir_path.file_name().unwrap().into(),
182 let test_name = compiletest::make_test_name(config, &paths);
185 .position(|test| test.desc.name == test_name)
186 .expect("The test should be in there");
187 result &= tester::run_tests_console(&opts, vec![tests.swap_remove(index)])?;
193 config.mode = TestMode::Ui;
194 config.src_base = Path::new("tests").join("ui-toml").canonicalize().unwrap();
196 let tests = compiletest::make_tests(config);
198 let res = run_tests(config, tests);
201 Ok(false) => panic!("Some tests failed"),
203 panic!("I/O failure during tests: {:?}", e);
208 fn run_ui_cargo(config: &mut compiletest::Config) {
210 config: &compiletest::Config,
212 mut tests: Vec<tester::TestDescAndFn>,
213 ) -> Result<bool, io::Error> {
214 let mut result = true;
215 let opts = compiletest::test_opts(config);
217 for dir in fs::read_dir(&config.src_base)? {
219 if !dir.file_type()?.is_dir() {
223 // Use the filter if provided
224 let dir_path = dir.path();
225 for filter in filters {
226 if !dir_path.ends_with(filter) {
231 for case in fs::read_dir(&dir_path)? {
233 if !case.file_type()?.is_dir() {
237 let src_path = case.path().join("src");
239 // When switching between branches, if the previous branch had a test
240 // that the current branch does not have, the directory is not removed
241 // because an ignored Cargo.lock file exists.
242 if !src_path.exists() {
246 env::set_current_dir(&src_path)?;
247 for file in fs::read_dir(&src_path)? {
249 if file.file_type()?.is_dir() {
253 // Search for the main file to avoid running a test for each file in the project
254 let file_path = file.path();
255 match file_path.file_name().and_then(OsStr::to_str) {
256 Some("main.rs") => {},
259 let _g = VarGuard::set("CLIPPY_CONF_DIR", case.path());
260 let paths = compiletest::common::TestPaths {
262 base: config.src_base.clone(),
263 relative_dir: src_path.strip_prefix(&config.src_base).unwrap().into(),
265 let test_name = compiletest::make_test_name(config, &paths);
268 .position(|test| test.desc.name == test_name)
269 .expect("The test should be in there");
270 result &= tester::run_tests_console(&opts, vec![tests.swap_remove(index)])?;
277 if cargo::is_rustc_test_suite() {
281 config.mode = TestMode::Ui;
282 config.src_base = Path::new("tests").join("ui-cargo").canonicalize().unwrap();
284 let tests = compiletest::make_tests(config);
286 let current_dir = env::current_dir().unwrap();
287 let res = run_tests(config, &config.filters, tests);
288 env::set_current_dir(current_dir).unwrap();
292 Ok(false) => panic!("Some tests failed"),
294 panic!("I/O failure during tests: {:?}", e);
300 set_var("CLIPPY_DISABLE_DOCS_LINKS", "true");
301 set_var("__CLIPPY_INTERNAL_TESTS", "true");
302 //set_var("RUST_BACKTRACE", "0");
308 let mut config = default_config();
310 run_ui_toml(&mut config);
311 run_ui_cargo(&mut config);
312 run_internal_tests(&mut config);
315 /// Restores an env var on drop
319 value: Option<OsString>,
323 fn set(key: &'static str, val: impl AsRef<OsStr>) -> Self {
324 let value = var_os(key);
330 impl Drop for VarGuard {
332 match self.value.as_deref() {
333 None => remove_var(self.key),
334 Some(value) => set_var(self.key, value),