Add end-to-end test for Gsym inlined function symbolization

Now that all the pieces came together and we are able to report inlined
functions, this change adds a test checking that inlined function
symbolization works as expected for the Gsym file source.

Signed-off-by: Daniel Müller <[email protected]>

tests/blazesym.rs

@@ -134,6 +134,49 @@ fn symbolize_elf_dwarf_gsym() {
     test(src, true);
 }
 
+/// Make sure that we report (enabled) or don't report (disabled) inlined
+/// functions with a Gsym source.
+#[test]
+fn symbolize_gsym_inlined() {
+    fn test(src: symbolize::Source, inlined_fns: bool) {
+        let symbolizer = Symbolizer::builder()
+            .enable_inlined_fns(inlined_fns)
+            .build();
+        let results = symbolizer
+            .symbolize(&src, &[0x200020a])
+            .unwrap()
+            .into_iter()
+            .collect::<Vec<_>>();
+        assert_eq!(results.len(), 1);
+
+        let (result, _addr_idx) = &results[0];
+        if inlined_fns {
+            assert_eq!(result.inlined.len(), 2);
+
+            let name = &result.inlined[0].name;
+            assert_eq!(*name, "factorial_inline_wrapper");
+            let frame = result.inlined[0].code_info.as_ref().unwrap();
+            assert_eq!(frame.file, "test-stable-addresses.c");
+            assert_eq!(frame.line, Some(32));
+
+            let name = &result.inlined[1].name;
+            assert_eq!(*name, "factorial_2nd_layer_inline_wrapper");
+            let frame = result.inlined[1].code_info.as_ref().unwrap();
+            assert_eq!(frame.file, "test-stable-addresses.c");
+            assert_eq!(frame.line, Some(26));
+        } else {
+            assert_eq!(result.inlined, Vec::new());
+        }
+    }
+
+    let path = Path::new(&env!("CARGO_MANIFEST_DIR"))
+        .join("data")
+        .join("test-stable-addresses.gsym");
+    let src = symbolize::Source::from(symbolize::GsymFile::new(path));
+    test(src.clone(), true);
+    test(src, false);
+}
+
 /// Check that we can symbolize the `abort_creds` function inside a
 /// kernel image properly. Inside of
 /// vmlinux-5.17.12-100.fc34.x86_64.dwarf, this function's address range