config: skip files that do not end in .yml

config/config_test.go

@@ -2,6 +2,7 @@ package config
 
 import (
 	"github.com/kr/pretty"
+	"path"
 	"path/filepath"
 	"testing"
 	"github.com/stretchr/testify/assert"
@@ -17,6 +18,11 @@ func TestSampleConfigsAreParsedWithoutErrors(t *testing.T) {
 
 	for _, p := range paths {
 
+		if path.Ext(p) != ".yml" {
+			t.Logf("skipping file %s", p)
+			continue
+		}
+
 		t.Run(p, func(t *testing.T) {
 			c, err := ParseConfig(p)
 			if err != nil {