From b8e79a216093ded583b41b2f0f7c084e2da96410 Mon Sep 17 00:00:00 2001
From: Bojan Durdevic <bojan88@gmail.com>
Date: Mon, 25 Oct 2021 21:55:22 -0400
Subject: [PATCH] Line range edge cases test

---
 src/line_range.rs | 13 +++++++++++++
 1 file changed, 13 insertions(+)

diff --git a/src/line_range.rs b/src/line_range.rs
index 888b84db..ccd998f6 100644
--- a/src/line_range.rs
+++ b/src/line_range.rs
@@ -145,6 +145,19 @@ fn test_parse_minus_success() {
     assert_eq!(40, range.upper);
 }
 
+#[test]
+fn test_parse_minus_edge_cases_success() {
+    let range = LineRange::from("5:-4").expect("Shouldn't fail on test!");
+    assert_eq!(1, range.lower);
+    assert_eq!(5, range.upper);
+    let range = LineRange::from("5:-5").expect("Shouldn't fail on test!");
+    assert_eq!(0, range.lower);
+    assert_eq!(5, range.upper);
+    let range = LineRange::from("5:-100").expect("Shouldn't fail on test!");
+    assert_eq!(0, range.lower);
+    assert_eq!(5, range.upper);
+}
+
 #[test]
 fn test_parse_minus_fail() {
     let range = LineRange::from("40:-z");