Extract is_known_header_field

Author: cruessler

gix-blame/tests/blame.rs

@@ -34,6 +34,10 @@ mod baseline {
         "filename",
     ];
 
+    fn is_known_header_field(field: &&str) -> bool {
+        HEADER_FIELDS.contains(field)
+    }
+
     impl<'a> Baseline<'a> {
         pub fn collect(baseline_path: impl AsRef<Path>) -> std::io::Result<Vec<BlameEntry>> {
             let content = std::fs::read(baseline_path)?;
@@ -89,7 +93,7 @@ mod baseline {
                         (line_number_in_final_file - 1)..(line_number_in_final_file + number_of_lines_in_group - 1);
                     assert!(ranges.is_none(), "should not overwrite existing ranges");
                     ranges = Some((blame_range, original_range));
-                } else if !HEADER_FIELDS.contains(&fields[0]) && ObjectId::from_hex(fields[0].as_bytes()).is_err() {
+                } else if !is_known_header_field(&fields[0]) && ObjectId::from_hex(fields[0].as_bytes()).is_err() {
                     panic!("unexpected line: '{:?}'", line.as_bstr());
                 }
             }