Add more tests for added lines

Author: cruessler

gix-blame/tests/blame.rs

@@ -1055,6 +1055,77 @@ fn process_change_works_added_hunk_4() {
     assert_eq!(offset_in_destination, Offset::Added(1));
 }
 
+#[test]
+fn process_change_works_added_hunk_5() {
+    let mut lines_blamed: Vec<BlameEntry> = vec![];
+    let mut new_hunks_to_blame: Vec<UnblamedHunk> = vec![];
+    let mut offset_in_destination: Offset = Offset::Added(0);
+    let suspect = ObjectId::null(gix_hash::Kind::Sha1);
+
+    let (hunk, change) = process_change(
+        &mut lines_blamed,
+        &mut new_hunks_to_blame,
+        &mut offset_in_destination,
+        suspect,
+        Some(UnblamedHunk::new(0..5, Offset::Added(0))),
+        Some(Change::Added(0..3, 1)),
+    );
+
+    assert_eq!(
+        hunk,
+        Some(UnblamedHunk {
+            range_in_blamed_file: 3..5,
+            range_in_destination: 3..5
+        })
+    );
+    assert_eq!(change, None);
+    assert_eq!(
+        lines_blamed,
+        vec![BlameEntry {
+            range: 0..3,
+            commit_id: suspect
+        }]
+    );
+    assert_eq!(new_hunks_to_blame, vec![]);
+    assert_eq!(offset_in_destination, Offset::Added(2));
+}
+
+#[test]
+fn process_change_works_added_hunk_6() {
+    let mut lines_blamed: Vec<BlameEntry> = vec![];
+    let mut new_hunks_to_blame: Vec<UnblamedHunk> = vec![];
+    let mut offset_in_destination: Offset = Offset::Added(0);
+    let suspect = ObjectId::null(gix_hash::Kind::Sha1);
+
+    let (hunk, change) = process_change(
+        &mut lines_blamed,
+        &mut new_hunks_to_blame,
+        &mut offset_in_destination,
+        suspect,
+        // range_in_destination: 0..4
+        Some(UnblamedHunk::new(1..5, Offset::Added(1))),
+        Some(Change::Added(0..3, 1)),
+    );
+
+    assert_eq!(
+        hunk,
+        Some(UnblamedHunk {
+            range_in_blamed_file: 4..5,
+            range_in_destination: 3..4
+        })
+    );
+    assert_eq!(change, None);
+    assert_eq!(
+        lines_blamed,
+        vec![BlameEntry {
+            range: 1..4,
+            commit_id: suspect
+        }]
+    );
+    assert_eq!(new_hunks_to_blame, vec![]);
+    assert_eq!(offset_in_destination, Offset::Added(2));
+}
+
 #[test]
 fn process_change_works_unchanged_hunk() {
     let mut lines_blamed: Vec<BlameEntry> = vec![];