add more (but technically duplicate) tests for time parsing and formatting

Author: Byron

gix-date/tests/time/format.rs

@@ -17,9 +17,20 @@ fn unix() {
 
 #[test]
 fn raw() {
-    let expected = "123456789 +0230";
-    assert_eq!(time().format(Format::Raw), expected);
-    assert_eq!(time().format(format::RAW), expected);
+    for (time, expected) in [
+        (time(), "123456789 +0230"),
+        (
+            Time {
+                seconds: 1112911993,
+                offset: 3600,
+                sign: Sign::Plus,
+            },
+            "1112911993 +0100",
+        ),
+    ] {
+        assert_eq!(time.format(Format::Raw), expected);
+        assert_eq!(time.format(format::RAW), expected);
+    }
 }
 
 #[test]

gix-date/tests/time/parse.rs

@@ -67,6 +67,15 @@ fn raw() {
         },
     );
 
+    assert_eq!(
+        gix_date::parse("1112911993 +0100", None).unwrap(),
+        Time {
+            seconds: 1112911993,
+            offset: 3600,
+            sign: Sign::Plus,
+        },
+    );
+
     let expected = Time {
         seconds: 1660874655,
         offset: -28800,