From cc2c2890f5272a129b6d29f4870c61181f15c152 Mon Sep 17 00:00:00 2001
From: Vincent Foley <vfoley@gmail.com>
Date: Fri, 18 Mar 2022 09:42:30 -0400
Subject: [PATCH] Add failing test from #289

---
 metrics-exporter-prometheus/src/formatting.rs | 8 +++++++-
 1 file changed, 7 insertions(+), 1 deletion(-)

diff --git a/metrics-exporter-prometheus/src/formatting.rs b/metrics-exporter-prometheus/src/formatting.rs
index f95f6d3e..3e90a304 100644
--- a/metrics-exporter-prometheus/src/formatting.rs
+++ b/metrics-exporter-prometheus/src/formatting.rs
@@ -226,7 +226,13 @@ mod tests {
 
     #[test]
     fn test_sanitize_metric_name_known_cases() {
-        let cases = &[("*", "_"), ("\"", "_"), ("foo_bar", "foo_bar"), ("1foobar", "_foobar")];
+        let cases = &[
+            ("*", "_"),
+            ("\"", "_"),
+            ("foo_bar", "foo_bar"),
+            ("foo1_bar", "foo1_bar"),
+            ("1foobar", "_foobar"),
+        ];
 
         for (input, expected) in cases {
             let result = sanitize_metric_name(input);