1 // Copyright 2013-2014 The Rust Project Developers. See the COPYRIGHT
2 // file at the top-level directory of this distribution and at
3 // http://rust-lang.org/COPYRIGHT.
5 // Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
6 // http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
7 // <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
8 // option. This file may not be copied, modified, or distributed
9 // except according to those terms.
11 use std::cell::RefCell;
14 use std::io::{Command, TempDir};
17 use std::string::String;
18 use std::unstable::dynamic_lib::DynamicLibrary;
20 use collections::{HashSet, HashMap};
22 use rustc::back::link;
23 use rustc::driver::config;
24 use rustc::driver::driver;
25 use rustc::driver::session;
26 use rustc::metadata::creader::Loader;
28 use syntax::codemap::{CodeMap, dummy_spanned};
29 use syntax::diagnostic;
30 use syntax::parse::token;
38 use visit_ast::RustdocVisitor;
40 pub fn run(input: &str,
43 mut test_args: Vec<String>)
45 let input_path = Path::new(input);
46 let input = driver::FileInput(input_path.clone());
48 let sessopts = config::Options {
49 maybe_sysroot: Some(os::self_exe_path().unwrap().dir_path()),
50 addl_lib_search_paths: RefCell::new(libs.clone()),
51 crate_types: vec!(config::CrateTypeDylib),
52 ..config::basic_options().clone()
56 let codemap = CodeMap::new();
57 let diagnostic_handler = diagnostic::default_handler(diagnostic::Auto);
58 let span_diagnostic_handler =
59 diagnostic::mk_span_handler(diagnostic_handler, codemap);
61 let sess = session::build_session_(sessopts,
62 Some(input_path.clone()),
63 span_diagnostic_handler);
65 let mut cfg = config::build_configuration(&sess);
66 cfg.extend(cfgs.move_iter().map(|cfg_| {
67 let cfg_ = token::intern_and_get_ident(cfg_.as_slice());
68 @dummy_spanned(ast::MetaWord(cfg_))
70 let krate = driver::phase_1_parse_input(&sess, cfg, &input);
71 let (krate, _) = driver::phase_2_configure_and_expand(&sess, &mut Loader::new(&sess), krate,
72 &from_str("rustdoc-test").unwrap());
74 let ctx = @core::DocContext {
76 maybe_typed: core::NotTyped(sess),
78 external_paths: RefCell::new(Some(HashMap::new())),
79 external_traits: RefCell::new(None),
80 external_typarams: RefCell::new(None),
81 inlined: RefCell::new(None),
82 populated_crate_impls: RefCell::new(HashSet::new()),
84 super::ctxtkey.replace(Some(ctx));
86 let mut v = RustdocVisitor::new(ctx, None);
88 let krate = v.clean();
89 let (krate, _) = passes::unindent_comments(krate);
90 let (krate, _) = passes::collapse_docs(krate);
92 let mut collector = Collector::new(krate.name.to_string(),
96 collector.fold_crate(krate);
98 test_args.unshift("rustdoctest".to_string());
100 testing::test_main(test_args.as_slice(),
101 collector.tests.move_iter().collect());
105 fn runtest(test: &str, cratename: &str, libs: HashSet<Path>, should_fail: bool,
106 no_run: bool, loose_feature_gating: bool) {
107 let test = maketest(test, cratename, loose_feature_gating);
108 let input = driver::StrInput(test.to_string());
110 let sessopts = config::Options {
111 maybe_sysroot: Some(os::self_exe_path().unwrap().dir_path()),
112 addl_lib_search_paths: RefCell::new(libs),
113 crate_types: vec!(config::CrateTypeExecutable),
114 output_types: vec!(link::OutputTypeExe),
116 cg: config::CodegenOptions {
117 prefer_dynamic: true,
118 .. config::basic_codegen_options()
120 ..config::basic_options().clone()
123 // Shuffle around a few input and output handles here. We're going to pass
124 // an explicit handle into rustc to collect output messages, but we also
125 // want to catch the error message that rustc prints when it fails.
127 // We take our task-local stderr (likely set by the test runner), and move
128 // it into another task. This helper task then acts as a sink for both the
129 // stderr of this task and stderr of rustc itself, copying all the info onto
130 // the stderr channel we originally started with.
132 // The basic idea is to not use a default_handler() for rustc, and then also
133 // not print things by default to the actual stderr.
134 let (tx, rx) = channel();
135 let w1 = io::ChanWriter::new(tx);
137 let old = io::stdio::set_stderr(box w1);
139 let mut p = io::ChanReader::new(rx);
140 let mut err = old.unwrap_or(box io::stderr() as Box<Writer:Send>);
141 io::util::copy(&mut p, &mut err).unwrap();
143 let emitter = diagnostic::EmitterWriter::new(box w2);
146 let codemap = CodeMap::new();
147 let diagnostic_handler = diagnostic::mk_handler(box emitter);
148 let span_diagnostic_handler =
149 diagnostic::mk_span_handler(diagnostic_handler, codemap);
151 let sess = session::build_session_(sessopts,
153 span_diagnostic_handler);
155 let outdir = TempDir::new("rustdoctest").expect("rustdoc needs a tempdir");
156 let out = Some(outdir.path().clone());
157 let cfg = config::build_configuration(&sess);
158 let libdir = sess.target_filesearch().get_lib_path();
159 driver::compile_input(sess, cfg, &input, &out, &None);
165 // We're careful to prepend the *target* dylib search path to the child's
166 // environment to ensure that the target loads the right libraries at
167 // runtime. It would be a sad day if the *host* libraries were loaded as a
169 let exe = outdir.path().join("rust_out");
171 let mut path = DynamicLibrary::search_path();
172 path.insert(0, libdir.clone());
174 // Remove the previous dylib search path var
175 let var = DynamicLibrary::envvar();
176 let mut env: Vec<(String,String)> = os::env().move_iter().collect();
177 match env.iter().position(|&(ref k, _)| k.as_slice() == var) {
178 Some(i) => { env.remove(i); }
182 // Add the new dylib search path var
183 let newpath = DynamicLibrary::create_path(path.as_slice());
184 env.push((var.to_string(),
185 str::from_utf8(newpath.as_slice()).unwrap().to_string()));
188 match Command::new(exe).env(env.as_slice()).output() {
189 Err(e) => fail!("couldn't run the test: {}{}", e,
190 if e.kind == io::PermissionDenied {
191 " - maybe your tempdir is mounted with noexec?"
194 if should_fail && out.status.success() {
195 fail!("test executable succeeded when it should have failed");
196 } else if !should_fail && !out.status.success() {
197 fail!("test executable failed:\n{}",
198 str::from_utf8(out.error.as_slice()));
204 fn maketest(s: &str, cratename: &str, loose_feature_gating: bool) -> String {
205 let mut prog = String::from_str(r"
207 #![allow(unused_variable, dead_assignment, unused_mut, attribute_usage, dead_code)]
210 if loose_feature_gating {
211 // FIXME #12773: avoid inserting these when the tutorial & manual
212 // etc. have been updated to not use them so prolifically.
213 prog.push_str("#![feature(macro_rules, globs, struct_variant, managed_boxes) ]\n");
216 if !s.contains("extern crate") {
217 if s.contains(cratename) {
218 prog.push_str(format!("extern crate {};\n",
219 cratename).as_slice());
222 if s.contains("fn main") {
225 prog.push_str("fn main() {\n");
227 prog.push_str("\n}");
233 pub struct Collector {
234 pub tests: Vec<testing::TestDescAndFn>,
239 current_header: Option<String>,
242 loose_feature_gating: bool
246 pub fn new(cratename: String, libs: HashSet<Path>,
247 use_headers: bool, loose_feature_gating: bool) -> Collector {
253 use_headers: use_headers,
254 current_header: None,
255 cratename: cratename,
257 loose_feature_gating: loose_feature_gating
261 pub fn add_test(&mut self, test: String, should_fail: bool, no_run: bool, should_ignore: bool) {
262 let name = if self.use_headers {
263 let s = self.current_header.as_ref().map(|s| s.as_slice()).unwrap_or("");
264 format!("{}_{}", s, self.cnt)
266 format!("{}_{}", self.names.connect("::"), self.cnt)
269 let libs = self.libs.clone();
270 let cratename = self.cratename.to_string();
271 let loose_feature_gating = self.loose_feature_gating;
272 debug!("Creating test {}: {}", name, test);
273 self.tests.push(testing::TestDescAndFn {
274 desc: testing::TestDesc {
275 name: testing::DynTestName(name),
276 ignore: should_ignore,
277 should_fail: false, // compiler failures are test failures
279 testfn: testing::DynTestFn(proc() {
280 runtest(test.as_slice(),
281 cratename.as_slice(),
285 loose_feature_gating);
290 pub fn register_header(&mut self, name: &str, level: u32) {
291 if self.use_headers && level == 1 {
292 // we use these headings as test names, so it's good if
293 // they're valid identifiers.
294 let name = name.chars().enumerate().map(|(i, c)| {
295 if (i == 0 && char::is_XID_start(c)) ||
296 (i != 0 && char::is_XID_continue(c)) {
301 }).collect::<String>();
303 // new header => reset count.
305 self.current_header = Some(name);
310 impl DocFolder for Collector {
311 fn fold_item(&mut self, item: clean::Item) -> Option<clean::Item> {
312 let pushed = match item.name {
313 Some(ref name) if name.len() == 0 => false,
314 Some(ref name) => { self.names.push(name.to_string()); true }
317 match item.doc_value() {
320 markdown::find_testable_code(doc, &mut *self);
324 let ret = self.fold_item_recur(item);