diff --git a/tests/testdata/parsers/bad_counter_values_20/metrics b/tests/testdata/parsers/bad_counter_values_20/metrics
new file mode 100644
index 0000000..b1d58c6
--- /dev/null
+++ b/tests/testdata/parsers/bad_counter_values_20/metrics
@@ -0,0 +1,7 @@
+# TYPE a gaugehistogram
+# HELP a help
+a_bucket{le="1.0"} 0
+a_bucket{le="+Inf"} 3.2
+a_gcount 3.2
+a_gsum 2
+# EOF
diff --git a/tests/testdata/parsers/bad_counter_values_20/test.json b/tests/testdata/parsers/bad_counter_values_20/test.json
new file mode 100644
index 0000000..434144c
--- /dev/null
+++ b/tests/testdata/parsers/bad_counter_values_20/test.json
@@ -0,0 +1,5 @@
+{
+  "type": "text",
+  "file": "metrics",
+  "shouldParse": false
+}