Add regression test

Author: xd009642

Cargo.toml

@@ -1,6 +1,6 @@
 [package]
 name = "llvm_profparser"
-version = "0.9.1"
+version = "0.9.2"
 authors = ["xd009642 <danielmckenna93@gmail.com>"]
 description = "Parsing and interpretation of llvm coverage profiles and generated data"
 repository = "https://github.com/xd009642/llvm-profparser"

src/instrumentation_profile/mod.rs

@@ -44,7 +44,7 @@ pub fn parse_bytes(data: &[u8]) -> io::Result<InstrumentationProfile> {
         ));
     };
     nom_res.map(|(_bytes, res)| res).map_err(|e| {
-        // trace!("{}", e);
+        trace!("{}", e);
         let verbose_error_message = |err: VerboseError<&[u8]>| {
             err.errors
                 .iter()

tests/data/profdata/misc/ferrocene-library-aarch64-apple-darwin.profdata

@@ -491,3 +491,16 @@ fn check_raw_data_consistency() {
         std::assert_eq!(data_record, raw_record);
     }
 }
+
+// https://github.com/xd009642/llvm-profparser/issues/65 prevent regression on hash table parsing
+// changing
+#[test]
+fn hash_table_regression_check() {
+    let ferrocene = data_root_dir()
+        .join("misc")
+        .join("ferrocene-library-aarch64-apple-darwin.profdata");
+
+    // We've not locked this to version, but it's enough to parse it and making sure it parses
+    // correctly to prevent a regression.
+    parse(&ferrocene).unwrap();
+}