Vendor things

third-party/vendor/addr2line/tests/parse.rs

@@ -0,0 +1,114 @@
+use std::borrow::Cow;
+use std::env;
+use std::fs::File;
+use std::path::{self, PathBuf};
+
+use object::Object;
+
+fn release_fixture_path() -> PathBuf {
+    if let Ok(p) = env::var("ADDR2LINE_FIXTURE_PATH") {
+        return p.into();
+    }
+
+    let mut path = PathBuf::new();
+    if let Ok(dir) = env::var("CARGO_MANIFEST_DIR") {
+        path.push(dir);
+    }
+    path.push("fixtures");
+    path.push("addr2line-release");
+    path
+}
+
+fn with_file<F: FnOnce(&object::File<'_>)>(target: &path::Path, f: F) {
+    let file = File::open(target).unwrap();
+    let map = unsafe { memmap2::Mmap::map(&file).unwrap() };
+    let file = object::File::parse(&*map).unwrap();
+    f(&file)
+}
+
+fn dwarf_load<'a>(object: &object::File<'a>) -> gimli::Dwarf<Cow<'a, [u8]>> {
+    let load_section = |id: gimli::SectionId| -> Result<Cow<'a, [u8]>, gimli::Error> {
+        use object::ObjectSection;
+
+        let data = object
+            .section_by_name(id.name())
+            .and_then(|section| section.data().ok())
+            .unwrap_or(&[][..]);
+        Ok(Cow::Borrowed(data))
+    };
+    gimli::Dwarf::load(&load_section).unwrap()
+}
+
+fn dwarf_borrow<'a>(
+    dwarf: &'a gimli::Dwarf<Cow<'_, [u8]>>,
+) -> gimli::Dwarf<gimli::EndianSlice<'a, gimli::LittleEndian>> {
+    let borrow_section: &dyn for<'b> Fn(
+        &'b Cow<'_, [u8]>,
+    ) -> gimli::EndianSlice<'b, gimli::LittleEndian> =
+        &|section| gimli::EndianSlice::new(section, gimli::LittleEndian);
+    dwarf.borrow(&borrow_section)
+}
+
+#[test]
+fn parse_base_rc() {
+    let target = release_fixture_path();
+
+    with_file(&target, |file| {
+        addr2line::ObjectContext::new(file).unwrap();
+    });
+}
+
+#[test]
+fn parse_base_slice() {
+    let target = release_fixture_path();
+
+    with_file(&target, |file| {
+        let dwarf = dwarf_load(file);
+        let dwarf = dwarf_borrow(&dwarf);
+        addr2line::Context::from_dwarf(dwarf).unwrap();
+    });
+}
+
+#[test]
+fn parse_lines_rc() {
+    let target = release_fixture_path();
+
+    with_file(&target, |file| {
+        let context = addr2line::ObjectContext::new(file).unwrap();
+        context.parse_lines().unwrap();
+    });
+}
+
+#[test]
+fn parse_lines_slice() {
+    let target = release_fixture_path();
+
+    with_file(&target, |file| {
+        let dwarf = dwarf_load(file);
+        let dwarf = dwarf_borrow(&dwarf);
+        let context = addr2line::Context::from_dwarf(dwarf).unwrap();
+        context.parse_lines().unwrap();
+    });
+}
+
+#[test]
+fn parse_functions_rc() {
+    let target = release_fixture_path();
+
+    with_file(&target, |file| {
+        let context = addr2line::ObjectContext::new(file).unwrap();
+        context.parse_functions().unwrap();
+    });
+}
+
+#[test]
+fn parse_functions_slice() {
+    let target = release_fixture_path();
+
+    with_file(&target, |file| {
+        let dwarf = dwarf_load(file);
+        let dwarf = dwarf_borrow(&dwarf);
+        let context = addr2line::Context::from_dwarf(dwarf).unwrap();
+        context.parse_functions().unwrap();
+    });
+}