| use rustc_data_structures::sync::Lrc; |
| use rustc_interface::interface; |
| use rustc_target::spec::TargetTriple; |
| use rustc::hir; |
| use rustc::hir::intravisit; |
| use rustc::session::{self, config, DiagnosticOutput}; |
| use rustc::util::common::ErrorReported; |
| use syntax::ast; |
| use syntax::with_globals; |
| use syntax::source_map::SourceMap; |
| use syntax::edition::Edition; |
| use syntax::feature_gate::UnstableFeatures; |
| use std::env; |
| use std::io::{self, Write}; |
| use std::panic; |
| use std::path::PathBuf; |
| use std::process::{self, Command, Stdio}; |
| use std::str; |
| use syntax::symbol::sym; |
| use syntax_pos::{BytePos, DUMMY_SP, Pos, Span, FileName}; |
| use tempfile::Builder as TempFileBuilder; |
| use testing; |
| |
| use crate::clean::Attributes; |
| use crate::config::Options; |
| use crate::html::markdown::{self, ErrorCodes, LangString, Ignore}; |
| |
| #[derive(Clone, Default)] |
| pub struct TestOptions { |
| /// Whether to disable the default `extern crate my_crate;` when creating doctests. |
| pub no_crate_inject: bool, |
| /// Whether to emit compilation warnings when compiling doctests. Setting this will suppress |
| /// the default `#![allow(unused)]`. |
| pub display_warnings: bool, |
| /// Additional crate-level attributes to add to doctests. |
| pub attrs: Vec<String>, |
| } |
| |
| pub fn run(options: Options) -> i32 { |
| let input = config::Input::File(options.input.clone()); |
| |
| let crate_types = if options.proc_macro_crate { |
| vec![config::CrateType::ProcMacro] |
| } else { |
| vec![config::CrateType::Dylib] |
| }; |
| |
| let sessopts = config::Options { |
| maybe_sysroot: options.maybe_sysroot.clone(), |
| search_paths: options.libs.clone(), |
| crate_types, |
| cg: options.codegen_options.clone(), |
| externs: options.externs.clone(), |
| unstable_features: UnstableFeatures::from_environment(), |
| lint_cap: Some(::rustc::lint::Level::Allow), |
| actually_rustdoc: true, |
| debugging_opts: config::DebuggingOptions { |
| ..config::basic_debugging_options() |
| }, |
| edition: options.edition, |
| target_triple: options.target.clone(), |
| ..config::Options::default() |
| }; |
| |
| let config = interface::Config { |
| opts: sessopts, |
| crate_cfg: config::parse_cfgspecs(options.cfgs.clone()), |
| input, |
| input_path: None, |
| output_file: None, |
| output_dir: None, |
| file_loader: None, |
| diagnostic_output: DiagnosticOutput::Default, |
| stderr: None, |
| crate_name: options.crate_name.clone(), |
| lint_caps: Default::default(), |
| }; |
| |
| let mut test_args = options.test_args.clone(); |
| let display_warnings = options.display_warnings; |
| |
| let tests = interface::run_compiler(config, |compiler| -> Result<_, ErrorReported> { |
| let lower_to_hir = compiler.lower_to_hir()?; |
| |
| let mut opts = scrape_test_config(lower_to_hir.peek().0.borrow().krate()); |
| opts.display_warnings |= options.display_warnings; |
| let enable_per_target_ignores = options.enable_per_target_ignores; |
| let mut collector = Collector::new( |
| compiler.crate_name()?.peek().to_string(), |
| options, |
| false, |
| opts, |
| Some(compiler.source_map().clone()), |
| None, |
| enable_per_target_ignores, |
| ); |
| |
| let mut global_ctxt = compiler.global_ctxt()?.take(); |
| global_ctxt.enter(|tcx| { |
| let krate = tcx.hir().krate(); |
| let mut hir_collector = HirCollector { |
| sess: compiler.session(), |
| collector: &mut collector, |
| map: tcx.hir(), |
| codes: ErrorCodes::from(compiler.session().opts |
| .unstable_features.is_nightly_build()), |
| }; |
| hir_collector.visit_testable("".to_string(), &krate.attrs, |this| { |
| intravisit::walk_crate(this, krate); |
| }); |
| }); |
| |
| Ok(collector.tests) |
| }).expect("compiler aborted in rustdoc!"); |
| |
| test_args.insert(0, "rustdoctest".to_string()); |
| |
| testing::test_main( |
| &test_args, |
| tests, |
| Some(testing::Options::new().display_output(display_warnings)) |
| ); |
| |
| 0 |
| } |
| |
| // Look for `#![doc(test(no_crate_inject))]`, used by crates in the std facade. |
| fn scrape_test_config(krate: &::rustc::hir::Crate) -> TestOptions { |
| use syntax::print::pprust; |
| |
| let mut opts = TestOptions { |
| no_crate_inject: false, |
| display_warnings: false, |
| attrs: Vec::new(), |
| }; |
| |
| let test_attrs: Vec<_> = krate.attrs.iter() |
| .filter(|a| a.check_name(sym::doc)) |
| .flat_map(|a| a.meta_item_list().unwrap_or_else(Vec::new)) |
| .filter(|a| a.check_name(sym::test)) |
| .collect(); |
| let attrs = test_attrs.iter().flat_map(|a| a.meta_item_list().unwrap_or(&[])); |
| |
| for attr in attrs { |
| if attr.check_name(sym::no_crate_inject) { |
| opts.no_crate_inject = true; |
| } |
| if attr.check_name(sym::attr) { |
| if let Some(l) = attr.meta_item_list() { |
| for item in l { |
| opts.attrs.push(pprust::meta_list_item_to_string(item)); |
| } |
| } |
| } |
| } |
| |
| opts |
| } |
| |
| /// Documentation test failure modes. |
| enum TestFailure { |
| /// The test failed to compile. |
| CompileError, |
| /// The test is marked `compile_fail` but compiled successfully. |
| UnexpectedCompilePass, |
| /// The test failed to compile (as expected) but the compiler output did not contain all |
| /// expected error codes. |
| MissingErrorCodes(Vec<String>), |
| /// The test binary was unable to be executed. |
| ExecutionError(io::Error), |
| /// The test binary exited with a non-zero exit code. |
| /// |
| /// This typically means an assertion in the test failed or another form of panic occurred. |
| ExecutionFailure(process::Output), |
| /// The test is marked `should_panic` but the test binary executed successfully. |
| UnexpectedRunPass, |
| } |
| |
| fn run_test( |
| test: &str, |
| cratename: &str, |
| filename: &FileName, |
| line: usize, |
| options: Options, |
| should_panic: bool, |
| no_run: bool, |
| as_test_harness: bool, |
| runtool: Option<String>, |
| runtool_args: Vec<String>, |
| target: TargetTriple, |
| compile_fail: bool, |
| mut error_codes: Vec<String>, |
| opts: &TestOptions, |
| edition: Edition, |
| ) -> Result<(), TestFailure> { |
| let (test, line_offset) = match panic::catch_unwind(|| { |
| make_test(test, Some(cratename), as_test_harness, opts, edition) |
| }) { |
| Ok((test, line_offset)) => (test, line_offset), |
| Err(cause) if cause.is::<errors::FatalErrorMarker>() => { |
| // If the parser used by `make_test` panicked due to a fatal error, pass the test code |
| // through unchanged. The error will be reported during compilation. |
| (test.to_owned(), 0) |
| }, |
| Err(cause) => panic::resume_unwind(cause), |
| }; |
| |
| // FIXME(#44940): if doctests ever support path remapping, then this filename |
| // needs to be the result of `SourceMap::span_to_unmapped_path`. |
| let path = match filename { |
| FileName::Real(path) => path.clone(), |
| _ => PathBuf::from(r"doctest.rs"), |
| }; |
| |
| enum DirState { |
| Temp(tempfile::TempDir), |
| Perm(PathBuf), |
| } |
| |
| impl DirState { |
| fn path(&self) -> &std::path::Path { |
| match self { |
| DirState::Temp(t) => t.path(), |
| DirState::Perm(p) => p.as_path(), |
| } |
| } |
| } |
| |
| let outdir = if let Some(mut path) = options.persist_doctests { |
| path.push(format!("{}_{}", |
| filename |
| .to_string() |
| .rsplit('/') |
| .next() |
| .unwrap() |
| .replace(".", "_"), |
| line) |
| ); |
| std::fs::create_dir_all(&path) |
| .expect("Couldn't create directory for doctest executables"); |
| |
| DirState::Perm(path) |
| } else { |
| DirState::Temp(TempFileBuilder::new() |
| .prefix("rustdoctest") |
| .tempdir() |
| .expect("rustdoc needs a tempdir")) |
| }; |
| let output_file = outdir.path().join("rust_out"); |
| |
| let rustc_binary = options.test_builder.as_ref().map(|v| &**v).unwrap_or_else(|| { |
| rustc_interface::util::rustc_path().expect("found rustc") |
| }); |
| let mut compiler = Command::new(&rustc_binary); |
| compiler.arg("--crate-type").arg("bin"); |
| for cfg in &options.cfgs { |
| compiler.arg("--cfg").arg(&cfg); |
| } |
| if let Some(sysroot) = options.maybe_sysroot { |
| compiler.arg("--sysroot").arg(sysroot); |
| } |
| compiler.arg("--edition").arg(&edition.to_string()); |
| compiler.env("UNSTABLE_RUSTDOC_TEST_PATH", path); |
| compiler.env("UNSTABLE_RUSTDOC_TEST_LINE", |
| format!("{}", line as isize - line_offset as isize)); |
| compiler.arg("-o").arg(&output_file); |
| if as_test_harness { |
| compiler.arg("--test"); |
| } |
| for lib_str in &options.lib_strs { |
| compiler.arg("-L").arg(&lib_str); |
| } |
| for extern_str in &options.extern_strs { |
| compiler.arg("--extern").arg(&extern_str); |
| } |
| compiler.arg("-Ccodegen-units=1"); |
| for codegen_options_str in &options.codegen_options_strs { |
| compiler.arg("-C").arg(&codegen_options_str); |
| } |
| if no_run { |
| compiler.arg("--emit=metadata"); |
| } |
| compiler.arg("--target").arg(target.to_string()); |
| |
| compiler.arg("-"); |
| compiler.stdin(Stdio::piped()); |
| compiler.stderr(Stdio::piped()); |
| |
| let mut child = compiler.spawn().expect("Failed to spawn rustc process"); |
| { |
| let stdin = child.stdin.as_mut().expect("Failed to open stdin"); |
| stdin.write_all(test.as_bytes()).expect("could write out test sources"); |
| } |
| let output = child.wait_with_output().expect("Failed to read stdout"); |
| |
| struct Bomb<'a>(&'a str); |
| impl Drop for Bomb<'_> { |
| fn drop(&mut self) { |
| eprint!("{}",self.0); |
| } |
| } |
| |
| let out = str::from_utf8(&output.stderr).unwrap(); |
| let _bomb = Bomb(&out); |
| match (output.status.success(), compile_fail) { |
| (true, true) => { |
| return Err(TestFailure::UnexpectedCompilePass); |
| } |
| (true, false) => {} |
| (false, true) => { |
| if !error_codes.is_empty() { |
| error_codes.retain(|err| !out.contains(err)); |
| |
| if !error_codes.is_empty() { |
| return Err(TestFailure::MissingErrorCodes(error_codes)); |
| } |
| } |
| } |
| (false, false) => { |
| return Err(TestFailure::CompileError); |
| } |
| } |
| |
| if no_run { |
| return Ok(()); |
| } |
| |
| // Run the code! |
| let mut cmd; |
| |
| if let Some(tool) = runtool { |
| cmd = Command::new(tool); |
| cmd.arg(output_file); |
| cmd.args(runtool_args); |
| } else { |
| cmd = Command::new(output_file); |
| } |
| |
| match cmd.output() { |
| Err(e) => return Err(TestFailure::ExecutionError(e)), |
| Ok(out) => { |
| if should_panic && out.status.success() { |
| return Err(TestFailure::UnexpectedRunPass); |
| } else if !should_panic && !out.status.success() { |
| return Err(TestFailure::ExecutionFailure(out)); |
| } |
| } |
| } |
| |
| Ok(()) |
| } |
| |
| /// Transforms a test into code that can be compiled into a Rust binary, and returns the number of |
| /// lines before the test code begins. |
| /// |
| /// # Panics |
| /// |
| /// This function uses the compiler's parser internally. The parser will panic if it encounters a |
| /// fatal error while parsing the test. |
| pub fn make_test(s: &str, |
| cratename: Option<&str>, |
| dont_insert_main: bool, |
| opts: &TestOptions, |
| edition: Edition) |
| -> (String, usize) { |
| let (crate_attrs, everything_else, crates) = partition_source(s); |
| let everything_else = everything_else.trim(); |
| let mut line_offset = 0; |
| let mut prog = String::new(); |
| |
| if opts.attrs.is_empty() && !opts.display_warnings { |
| // If there aren't any attributes supplied by #![doc(test(attr(...)))], then allow some |
| // lints that are commonly triggered in doctests. The crate-level test attributes are |
| // commonly used to make tests fail in case they trigger warnings, so having this there in |
| // that case may cause some tests to pass when they shouldn't have. |
| prog.push_str("#![allow(unused)]\n"); |
| line_offset += 1; |
| } |
| |
| // Next, any attributes that came from the crate root via #![doc(test(attr(...)))]. |
| for attr in &opts.attrs { |
| prog.push_str(&format!("#![{}]\n", attr)); |
| line_offset += 1; |
| } |
| |
| // Now push any outer attributes from the example, assuming they |
| // are intended to be crate attributes. |
| prog.push_str(&crate_attrs); |
| prog.push_str(&crates); |
| |
| // Uses libsyntax to parse the doctest and find if there's a main fn and the extern |
| // crate already is included. |
| let (already_has_main, already_has_extern_crate, found_macro) = with_globals(edition, || { |
| use crate::syntax::{parse::{self, ParseSess}, source_map::FilePathMapping}; |
| use errors::emitter::EmitterWriter; |
| use errors::Handler; |
| |
| let filename = FileName::anon_source_code(s); |
| let source = crates + &everything_else; |
| |
| // Any errors in parsing should also appear when the doctest is compiled for real, so just |
| // send all the errors that libsyntax emits directly into a `Sink` instead of stderr. |
| let cm = Lrc::new(SourceMap::new(FilePathMapping::empty())); |
| let emitter = EmitterWriter::new(box io::sink(), None, false, false, false, None); |
| // FIXME(misdreavus): pass `-Z treat-err-as-bug` to the doctest parser |
| let handler = Handler::with_emitter(false, None, box emitter); |
| let sess = ParseSess::with_span_handler(handler, cm); |
| |
| let mut found_main = false; |
| let mut found_extern_crate = cratename.is_none(); |
| let mut found_macro = false; |
| |
| let mut parser = match parse::maybe_new_parser_from_source_str(&sess, filename, source) { |
| Ok(p) => p, |
| Err(errs) => { |
| for mut err in errs { |
| err.cancel(); |
| } |
| |
| return (found_main, found_extern_crate, found_macro); |
| } |
| }; |
| |
| loop { |
| match parser.parse_item() { |
| Ok(Some(item)) => { |
| if !found_main { |
| if let ast::ItemKind::Fn(..) = item.node { |
| if item.ident.name == sym::main { |
| found_main = true; |
| } |
| } |
| } |
| |
| if !found_extern_crate { |
| if let ast::ItemKind::ExternCrate(original) = item.node { |
| // This code will never be reached if `cratename` is none because |
| // `found_extern_crate` is initialized to `true` if it is none. |
| let cratename = cratename.unwrap(); |
| |
| match original { |
| Some(name) => found_extern_crate = name.as_str() == cratename, |
| None => found_extern_crate = item.ident.as_str() == cratename, |
| } |
| } |
| } |
| |
| if !found_macro { |
| if let ast::ItemKind::Mac(..) = item.node { |
| found_macro = true; |
| } |
| } |
| |
| if found_main && found_extern_crate { |
| break; |
| } |
| } |
| Ok(None) => break, |
| Err(mut e) => { |
| e.cancel(); |
| break; |
| } |
| } |
| } |
| |
| (found_main, found_extern_crate, found_macro) |
| }); |
| |
| // If a doctest's `fn main` is being masked by a wrapper macro, the parsing loop above won't |
| // see it. In that case, run the old text-based scan to see if they at least have a main |
| // function written inside a macro invocation. See |
| // https://github.com/rust-lang/rust/issues/56898 |
| let already_has_main = if found_macro && !already_has_main { |
| s.lines() |
| .map(|line| { |
| let comment = line.find("//"); |
| if let Some(comment_begins) = comment { |
| &line[0..comment_begins] |
| } else { |
| line |
| } |
| }) |
| .any(|code| code.contains("fn main")) |
| } else { |
| already_has_main |
| }; |
| |
| // Don't inject `extern crate std` because it's already injected by the |
| // compiler. |
| if !already_has_extern_crate && !opts.no_crate_inject && cratename != Some("std") { |
| if let Some(cratename) = cratename { |
| // Make sure its actually used if not included. |
| if s.contains(cratename) { |
| prog.push_str(&format!("extern crate {};\n", cratename)); |
| line_offset += 1; |
| } |
| } |
| } |
| |
| // FIXME: This code cannot yet handle no_std test cases yet |
| if dont_insert_main || already_has_main || prog.contains("![no_std]") { |
| prog.push_str(everything_else); |
| } else { |
| let returns_result = everything_else.trim_end().ends_with("(())"); |
| let (main_pre, main_post) = if returns_result { |
| ("fn main() { fn _inner() -> Result<(), impl core::fmt::Debug> {", |
| "}\n_inner().unwrap() }") |
| } else { |
| ("fn main() {\n", "\n}") |
| }; |
| prog.extend([main_pre, everything_else, main_post].iter().cloned()); |
| line_offset += 1; |
| } |
| |
| debug!("final doctest:\n{}", prog); |
| |
| (prog, line_offset) |
| } |
| |
| // FIXME(aburka): use a real parser to deal with multiline attributes |
| fn partition_source(s: &str) -> (String, String, String) { |
| #[derive(Copy, Clone, PartialEq)] |
| enum PartitionState { |
| Attrs, |
| Crates, |
| Other, |
| } |
| let mut state = PartitionState::Attrs; |
| let mut before = String::new(); |
| let mut crates = String::new(); |
| let mut after = String::new(); |
| |
| for line in s.lines() { |
| let trimline = line.trim(); |
| |
| // FIXME(misdreavus): if a doc comment is placed on an extern crate statement, it will be |
| // shunted into "everything else" |
| match state { |
| PartitionState::Attrs => { |
| state = if trimline.starts_with("#![") || |
| trimline.chars().all(|c| c.is_whitespace()) || |
| (trimline.starts_with("//") && !trimline.starts_with("///")) |
| { |
| PartitionState::Attrs |
| } else if trimline.starts_with("extern crate") || |
| trimline.starts_with("#[macro_use] extern crate") |
| { |
| PartitionState::Crates |
| } else { |
| PartitionState::Other |
| }; |
| } |
| PartitionState::Crates => { |
| state = if trimline.starts_with("extern crate") || |
| trimline.starts_with("#[macro_use] extern crate") || |
| trimline.chars().all(|c| c.is_whitespace()) || |
| (trimline.starts_with("//") && !trimline.starts_with("///")) |
| { |
| PartitionState::Crates |
| } else { |
| PartitionState::Other |
| }; |
| } |
| PartitionState::Other => {} |
| } |
| |
| match state { |
| PartitionState::Attrs => { |
| before.push_str(line); |
| before.push_str("\n"); |
| } |
| PartitionState::Crates => { |
| crates.push_str(line); |
| crates.push_str("\n"); |
| } |
| PartitionState::Other => { |
| after.push_str(line); |
| after.push_str("\n"); |
| } |
| } |
| } |
| |
| debug!("before:\n{}", before); |
| debug!("crates:\n{}", crates); |
| debug!("after:\n{}", after); |
| |
| (before, after, crates) |
| } |
| |
| pub trait Tester { |
| fn add_test(&mut self, test: String, config: LangString, line: usize); |
| fn get_line(&self) -> usize { |
| 0 |
| } |
| fn register_header(&mut self, _name: &str, _level: u32) {} |
| } |
| |
| pub struct Collector { |
| pub tests: Vec<testing::TestDescAndFn>, |
| |
| // The name of the test displayed to the user, separated by `::`. |
| // |
| // In tests from Rust source, this is the path to the item |
| // e.g., `["std", "vec", "Vec", "push"]`. |
| // |
| // In tests from a markdown file, this is the titles of all headers (h1~h6) |
| // of the sections that contain the code block, e.g., if the markdown file is |
| // written as: |
| // |
| // ``````markdown |
| // # Title |
| // |
| // ## Subtitle |
| // |
| // ```rust |
| // assert!(true); |
| // ``` |
| // `````` |
| // |
| // the `names` vector of that test will be `["Title", "Subtitle"]`. |
| names: Vec<String>, |
| |
| options: Options, |
| use_headers: bool, |
| enable_per_target_ignores: bool, |
| cratename: String, |
| opts: TestOptions, |
| position: Span, |
| source_map: Option<Lrc<SourceMap>>, |
| filename: Option<PathBuf>, |
| } |
| |
| impl Collector { |
| pub fn new(cratename: String, options: Options, use_headers: bool, opts: TestOptions, |
| source_map: Option<Lrc<SourceMap>>, filename: Option<PathBuf>, |
| enable_per_target_ignores: bool) -> Collector { |
| Collector { |
| tests: Vec::new(), |
| names: Vec::new(), |
| options, |
| use_headers, |
| enable_per_target_ignores, |
| cratename, |
| opts, |
| position: DUMMY_SP, |
| source_map, |
| filename, |
| } |
| } |
| |
| fn generate_name(&self, line: usize, filename: &FileName) -> String { |
| format!("{} - {} (line {})", filename, self.names.join("::"), line) |
| } |
| |
| pub fn set_position(&mut self, position: Span) { |
| self.position = position; |
| } |
| |
| fn get_filename(&self) -> FileName { |
| if let Some(ref source_map) = self.source_map { |
| let filename = source_map.span_to_filename(self.position); |
| if let FileName::Real(ref filename) = filename { |
| if let Ok(cur_dir) = env::current_dir() { |
| if let Ok(path) = filename.strip_prefix(&cur_dir) { |
| return path.to_owned().into(); |
| } |
| } |
| } |
| filename |
| } else if let Some(ref filename) = self.filename { |
| filename.clone().into() |
| } else { |
| FileName::Custom("input".to_owned()) |
| } |
| } |
| } |
| |
| impl Tester for Collector { |
| fn add_test(&mut self, test: String, config: LangString, line: usize) { |
| let filename = self.get_filename(); |
| let name = self.generate_name(line, &filename); |
| let cratename = self.cratename.to_string(); |
| let opts = self.opts.clone(); |
| let edition = config.edition.unwrap_or(self.options.edition.clone()); |
| let options = self.options.clone(); |
| let runtool = self.options.runtool.clone(); |
| let runtool_args = self.options.runtool_args.clone(); |
| let target = self.options.target.clone(); |
| let target_str = target.to_string(); |
| |
| debug!("creating test {}: {}", name, test); |
| self.tests.push(testing::TestDescAndFn { |
| desc: testing::TestDesc { |
| name: testing::DynTestName(name.clone()), |
| ignore: match config.ignore { |
| Ignore::All => true, |
| Ignore::None => false, |
| Ignore::Some(ref ignores) => { |
| ignores.iter().any(|s| target_str.contains(s)) |
| }, |
| }, |
| // compiler failures are test failures |
| should_panic: testing::ShouldPanic::No, |
| allow_fail: config.allow_fail, |
| }, |
| testfn: testing::DynTestFn(box move || { |
| let res = run_test( |
| &test, |
| &cratename, |
| &filename, |
| line, |
| options, |
| config.should_panic, |
| config.no_run, |
| config.test_harness, |
| runtool, |
| runtool_args, |
| target, |
| config.compile_fail, |
| config.error_codes, |
| &opts, |
| edition, |
| ); |
| |
| if let Err(err) = res { |
| match err { |
| TestFailure::CompileError => { |
| eprint!("Couldn't compile the test."); |
| } |
| TestFailure::UnexpectedCompilePass => { |
| eprint!("Test compiled successfully, but it's marked `compile_fail`."); |
| } |
| TestFailure::UnexpectedRunPass => { |
| eprint!("Test executable succeeded, but it's marked `should_panic`."); |
| } |
| TestFailure::MissingErrorCodes(codes) => { |
| eprint!("Some expected error codes were not found: {:?}", codes); |
| } |
| TestFailure::ExecutionError(err) => { |
| eprint!("Couldn't run the test: {}", err); |
| if err.kind() == io::ErrorKind::PermissionDenied { |
| eprint!(" - maybe your tempdir is mounted with noexec?"); |
| } |
| } |
| TestFailure::ExecutionFailure(out) => { |
| let reason = if let Some(code) = out.status.code() { |
| format!("exit code {}", code) |
| } else { |
| String::from("terminated by signal") |
| }; |
| |
| eprintln!("Test executable failed ({}).", reason); |
| |
| // FIXME(#12309): An unfortunate side-effect of capturing the test |
| // executable's output is that the relative ordering between the test's |
| // stdout and stderr is lost. However, this is better than the |
| // alternative: if the test executable inherited the parent's I/O |
| // handles the output wouldn't be captured at all, even on success. |
| // |
| // The ordering could be preserved if the test process' stderr was |
| // redirected to stdout, but that functionality does not exist in the |
| // standard library, so it may not be portable enough. |
| let stdout = str::from_utf8(&out.stdout).unwrap_or_default(); |
| let stderr = str::from_utf8(&out.stderr).unwrap_or_default(); |
| |
| if !stdout.is_empty() || !stderr.is_empty() { |
| eprintln!(); |
| |
| if !stdout.is_empty() { |
| eprintln!("stdout:\n{}", stdout); |
| } |
| |
| if !stderr.is_empty() { |
| eprintln!("stderr:\n{}", stderr); |
| } |
| } |
| } |
| } |
| |
| panic::resume_unwind(box ()); |
| } |
| }), |
| }); |
| } |
| |
| fn get_line(&self) -> usize { |
| if let Some(ref source_map) = self.source_map { |
| let line = self.position.lo().to_usize(); |
| let line = source_map.lookup_char_pos(BytePos(line as u32)).line; |
| if line > 0 { line - 1 } else { line } |
| } else { |
| 0 |
| } |
| } |
| |
| fn register_header(&mut self, name: &str, level: u32) { |
| if self.use_headers { |
| // We use these headings as test names, so it's good if |
| // they're valid identifiers. |
| let name = name.chars().enumerate().map(|(i, c)| { |
| if (i == 0 && rustc_lexer::is_id_start(c)) || |
| (i != 0 && rustc_lexer::is_id_continue(c)) { |
| c |
| } else { |
| '_' |
| } |
| }).collect::<String>(); |
| |
| // Here we try to efficiently assemble the header titles into the |
| // test name in the form of `h1::h2::h3::h4::h5::h6`. |
| // |
| // Suppose that originally `self.names` contains `[h1, h2, h3]`... |
| let level = level as usize; |
| if level <= self.names.len() { |
| // ... Consider `level == 2`. All headers in the lower levels |
| // are irrelevant in this new level. So we should reset |
| // `self.names` to contain headers until <h2>, and replace that |
| // slot with the new name: `[h1, name]`. |
| self.names.truncate(level); |
| self.names[level - 1] = name; |
| } else { |
| // ... On the other hand, consider `level == 5`. This means we |
| // need to extend `self.names` to contain five headers. We fill |
| // in the missing level (<h4>) with `_`. Thus `self.names` will |
| // become `[h1, h2, h3, "_", name]`. |
| if level - 1 > self.names.len() { |
| self.names.resize(level - 1, "_".to_owned()); |
| } |
| self.names.push(name); |
| } |
| } |
| } |
| } |
| |
| struct HirCollector<'a, 'hir> { |
| sess: &'a session::Session, |
| collector: &'a mut Collector, |
| map: &'a hir::map::Map<'hir>, |
| codes: ErrorCodes, |
| } |
| |
| impl<'a, 'hir> HirCollector<'a, 'hir> { |
| fn visit_testable<F: FnOnce(&mut Self)>(&mut self, |
| name: String, |
| attrs: &[ast::Attribute], |
| nested: F) { |
| let mut attrs = Attributes::from_ast(self.sess.diagnostic(), attrs); |
| if let Some(ref cfg) = attrs.cfg { |
| if !cfg.matches(&self.sess.parse_sess, Some(&self.sess.features_untracked())) { |
| return; |
| } |
| } |
| |
| let has_name = !name.is_empty(); |
| if has_name { |
| self.collector.names.push(name); |
| } |
| |
| attrs.collapse_doc_comments(); |
| attrs.unindent_doc_comments(); |
| // The collapse-docs pass won't combine sugared/raw doc attributes, or included files with |
| // anything else, this will combine them for us. |
| if let Some(doc) = attrs.collapsed_doc_value() { |
| self.collector.set_position(attrs.span.unwrap_or(DUMMY_SP)); |
| markdown::find_testable_code(&doc, |
| self.collector, |
| self.codes, |
| self.collector.enable_per_target_ignores); |
| } |
| |
| nested(self); |
| |
| if has_name { |
| self.collector.names.pop(); |
| } |
| } |
| } |
| |
| impl<'a, 'hir> intravisit::Visitor<'hir> for HirCollector<'a, 'hir> { |
| fn nested_visit_map<'this>(&'this mut self) -> intravisit::NestedVisitorMap<'this, 'hir> { |
| intravisit::NestedVisitorMap::All(&self.map) |
| } |
| |
| fn visit_item(&mut self, item: &'hir hir::Item) { |
| let name = if let hir::ItemKind::Impl(.., ref ty, _) = item.node { |
| self.map.hir_to_pretty_string(ty.hir_id) |
| } else { |
| item.ident.to_string() |
| }; |
| |
| self.visit_testable(name, &item.attrs, |this| { |
| intravisit::walk_item(this, item); |
| }); |
| } |
| |
| fn visit_trait_item(&mut self, item: &'hir hir::TraitItem) { |
| self.visit_testable(item.ident.to_string(), &item.attrs, |this| { |
| intravisit::walk_trait_item(this, item); |
| }); |
| } |
| |
| fn visit_impl_item(&mut self, item: &'hir hir::ImplItem) { |
| self.visit_testable(item.ident.to_string(), &item.attrs, |this| { |
| intravisit::walk_impl_item(this, item); |
| }); |
| } |
| |
| fn visit_foreign_item(&mut self, item: &'hir hir::ForeignItem) { |
| self.visit_testable(item.ident.to_string(), &item.attrs, |this| { |
| intravisit::walk_foreign_item(this, item); |
| }); |
| } |
| |
| fn visit_variant(&mut self, |
| v: &'hir hir::Variant, |
| g: &'hir hir::Generics, |
| item_id: hir::HirId) { |
| self.visit_testable(v.ident.to_string(), &v.attrs, |this| { |
| intravisit::walk_variant(this, v, g, item_id); |
| }); |
| } |
| |
| fn visit_struct_field(&mut self, f: &'hir hir::StructField) { |
| self.visit_testable(f.ident.to_string(), &f.attrs, |this| { |
| intravisit::walk_struct_field(this, f); |
| }); |
| } |
| |
| fn visit_macro_def(&mut self, macro_def: &'hir hir::MacroDef) { |
| self.visit_testable(macro_def.name.to_string(), ¯o_def.attrs, |_| ()); |
| } |
| } |
| |
| #[cfg(test)] |
| mod tests; |
