add rename test

grafana · Oct 17, 2024 · e908d1e · e908d1e
1 parent eb1a898
commit e908d1e
Showing 1 changed file with 16 additions and 0 deletions.
diff --git a/pkg/logql/log/fmt_test.go b/pkg/logql/log/fmt_test.go
@@ -515,6 +515,22 @@ func Test_labelsFormatter_Format(t *testing.T) {
 		in   labels.Labels
 		want labels.Labels
 	}{
+		{
+			"rename label",
+			mustNewLabelsFormatter([]LabelFmt{
+				NewRenameLabelFmt("baz", "foo"),
+			}),
+			labels.FromStrings("foo", "blip", "bar", "blop"),
+			labels.FromStrings("bar", "blop", "baz", "blip"),
+		},
+		{
+			"rename and overwrite existing label",
+			mustNewLabelsFormatter([]LabelFmt{
+				NewRenameLabelFmt("bar", "foo"),
+			}),
+			labels.FromStrings("foo", "blip", "bar", "blop"),
+			labels.FromStrings("bar", "blip"),
+		},
 		{
 			"combined with template",
 			mustNewLabelsFormatter([]LabelFmt{NewTemplateLabelFmt("foo", "{{.foo}} and {{.bar}}")}),