vendor/syn/tests/repo/mod.rs

   1 mod progress;
   2
   3 use self::progress::Progress;
   4 use anyhow::Result;
   5 use flate2::read::GzDecoder;
   6 use std::fs;
   7 use std::path::Path;
   8 use tar::Archive;
   9 use walkdir::DirEntry;
  10
  11 const REVISION: &str = "e708cbd91c9cae4426d69270248362b423324556";
  12
  13 #[rustfmt::skip]
  14 static EXCLUDE: &[&str] = &[
  15     // Compile-fail expr parameter in const generic position: f::<1 + 2>()
  16     "src/test/ui/const-generics/closing-args-token.rs",
  17     "src/test/ui/const-generics/const-expression-parameter.rs",
  18
  19     // Deprecated anonymous parameter syntax in traits
  20     "src/test/ui/issues/issue-13105.rs",
  21     "src/test/ui/issues/issue-13775.rs",
  22     "src/test/ui/issues/issue-34074.rs",
  23     "src/test/ui/proc-macro/trait-fn-args-2015.rs",
  24
  25     // Not actually test cases
  26     "src/test/rustdoc-ui/test-compile-fail2.rs",
  27     "src/test/rustdoc-ui/test-compile-fail3.rs",
  28     "src/test/ui/include-single-expr-helper.rs",
  29     "src/test/ui/include-single-expr-helper-1.rs",
  30     "src/test/ui/json-bom-plus-crlf-multifile-aux.rs",
  31     "src/test/ui/lint/expansion-time-include.rs",
  32     "src/test/ui/macros/auxiliary/macro-comma-support.rs",
  33     "src/test/ui/macros/auxiliary/macro-include-items-expr.rs",
  34     "src/test/ui/parser/auxiliary/issue-21146-inc.rs",
  35 ];
  36
  37 pub fn base_dir_filter(entry: &DirEntry) -> bool {
  38     let path = entry.path();
  39     if path.is_dir() {
  40         return true; // otherwise walkdir does not visit the files
  41     }
  42     if path.extension().map(|e| e != "rs").unwrap_or(true) {
  43         return false;
  44     }
  45
  46     let mut path_string = path.to_string_lossy();
  47     if cfg!(windows) {
  48         path_string = path_string.replace('\\', "/").into();
  49     }
  50     let path = if let Some(path) = path_string.strip_prefix("tests/rust/") {
  51         path
  52     } else {
  53         panic!("unexpected path in Rust dist: {}", path_string);
  54     };
  55
  56     if path.starts_with("src/test/compile-fail") || path.starts_with("src/test/rustfix") {
  57         return false;
  58     }
  59
  60     if path.starts_with("src/test/ui") {
  61         let stderr_path = entry.path().with_extension("stderr");
  62         if stderr_path.exists() {
  63             // Expected to fail in some way
  64             return false;
  65         }
  66     }
  67
  68     !EXCLUDE.contains(&path)
  69 }
  70
  71 #[allow(dead_code)]
  72 pub fn edition(path: &Path) -> &'static str {
  73     if path.ends_with("dyn-2015-no-warnings-without-lints.rs") {
  74         "2015"
  75     } else {
  76         "2018"
  77     }
  78 }
  79
  80 pub fn clone_rust() {
  81     let needs_clone = match fs::read_to_string("tests/rust/COMMIT") {
  82         Err(_) => true,
  83         Ok(contents) => contents.trim() != REVISION,
  84     };
  85     if needs_clone {
  86         download_and_unpack().unwrap();
  87     }
  88     let mut missing = String::new();
  89     let test_src = Path::new("tests/rust");
  90     for exclude in EXCLUDE {
  91         if !test_src.join(exclude).exists() {
  92             missing += "\ntests/rust/";
  93             missing += exclude;
  94         }
  95     }
  96     if !missing.is_empty() {
  97         panic!("excluded test file does not exist:{}\n", missing);
  98     }
  99 }
 100
 101 fn download_and_unpack() -> Result<()> {
 102     let url = format!(
 103         "https://github.com/rust-lang/rust/archive/{}.tar.gz",
 104         REVISION
 105     );
 106     let response = reqwest::blocking::get(&url)?.error_for_status()?;
 107     let progress = Progress::new(response);
 108     let decoder = GzDecoder::new(progress);
 109     let mut archive = Archive::new(decoder);
 110     let prefix = format!("rust-{}", REVISION);
 111
 112     let tests_rust = Path::new("tests/rust");
 113     if tests_rust.exists() {
 114         fs::remove_dir_all(tests_rust)?;
 115     }
 116
 117     for entry in archive.entries()? {
 118         let mut entry = entry?;
 119         let path = entry.path()?;
 120         if path == Path::new("pax_global_header") {
 121             continue;
 122         }
 123         let relative = path.strip_prefix(&prefix)?;
 124         let out = tests_rust.join(relative);
 125         entry.unpack(&out)?;
 126     }
 127
 128     fs::write("tests/rust/COMMIT", REVISION)?;
 129     Ok(())
 130 }