test: add a unit test for index API

Signed-off-by: hi-rustin <[email protected]>
tokio-rs · Dec 2, 2023 · 1bc36ea · 1bc36ea
1 parent 395b684
commit 1bc36ea
Showing 1 changed file with 11 additions and 0 deletions.
diff --git a/tracing-core/src/field.rs b/tracing-core/src/field.rs
@@ -1025,6 +1025,17 @@ mod test {
         assert!(valueset.is_empty());
     }
 
+    #[test]
+    fn index_of_field_in_fieldset_is_correct() {
+        let fields = TEST_META_1.fields();
+        let foo = fields.field("foo").unwrap();
+        assert_eq!(foo.index(), 0);
+        let bar = fields.field("bar").unwrap();
+        assert_eq!(bar.index(), 1);
+        let baz = fields.field("baz").unwrap();
+        assert_eq!(baz.index(), 2);
+    }
+
     #[test]
     fn empty_value_set_is_empty() {
         let fields = TEST_META_1.fields();