PYKE-11909: Tested glob / literal behaviour for is_mainline check

1 files changed, 16 insertions, 2 deletions

diff --git a/src/git.rs b/src/git.rs
index 2fb12d8..798f0cd 100644
--- a/src/git.rs
+++ b/src/git.rs
@@ -354,8 +354,8 @@ impl Git for LiveGit {
             Ok(Some(ref_name) == head.name())
         }
         fn matches_glob(git: &LiveGit, ref_name: &str, glob: &str) -> Result<bool, Box<dyn Error>> {
-            let mut references = git.repo.references_glob(&format!("refs/heads/{}", glob))?;
-            references
+            git.repo
+                .references_glob(&format!("refs/heads/{}", glob))?
                 .names()
                 .map(|name| name.map(|n| n == ref_name))
                 .fold(Ok(false), |acc, next| {
@@ -517,6 +517,20 @@ mod test {
     }
 
     #[test]
+    fn is_mainline_with_literal_config_does_not_identify_head_branch() {
+        let project_root = env!("CARGO_MANIFEST_DIR");
+        let git = LiveGit::new(
+            format!("{}/tests/test-repo.git", project_root),
+            GitConfig {
+                mainlines: vec!["tagged-branch".into()],
+            },
+        )
+        .unwrap();
+        assert_eq!(git.is_mainline("refs/heads/master").unwrap(), false);
+        assert_eq!(git.is_mainline("refs/heads/tagged-branch").unwrap(), true);
+    }
+
+    #[test]
     fn is_mainline_with_multiple_glob_config_identifies_all_matches() {
         let project_root = env!("CARGO_MANIFEST_DIR");
         let git = LiveGit::new(